Introduce CEL Policy Conformance Test Runner for Java#1043

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copybara-service merged 1 commit into from
May 1, 2026
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Introduce CEL Policy Conformance Test Runner for Java #1043

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25 changes: 25 additions & 0 deletions conformance/src/test/java/dev/cel/conformance/policy/BUILD.bazel
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load("@rules_java//java:defs.bzl", "java_library")
load(":cel_policy_conformance_test.bzl", "cel_policy_conformance_test_java")

package(
default_applicable_licenses = ["//:license"],
default_testonly = True,
)

java_library(
name = "run",
srcs = glob(["*.java"]),
deps = [
"//:auto_value",
"//bundle:cel",
"//testing/testrunner:cel_expression_source",
"//testing/testrunner:cel_test_context",
"//testing/testrunner:cel_test_suite",
"//testing/testrunner:cel_test_suite_text_proto_parser",
"//testing/testrunner:cel_test_suite_yaml_parser",
"//testing/testrunner:test_runner_library",
"@maven//:com_google_guava_guava",
"@maven//:com_google_protobuf_protobuf_java",
"@maven//:junit_junit",
],
)
72 changes: 72 additions & 0 deletions conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTest.java
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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.Value;
import dev.cel.bundle.Cel;
import dev.cel.bundle.CelFactory;
import dev.cel.testing.testrunner.CelExpressionSource;
import dev.cel.testing.testrunner.CelTestContext;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.TestRunnerLibrary;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.junit.runners.model.Statement;

/** Statement representing a single CEL policy conformance test case. */
public final class PolicyConformanceTest extends Statement {

private static final Cel CEL = CelFactory.standardCelBuilder().build();

private final String name;
private final CelTestCase testCase;
private final String dirPath;

public PolicyConformanceTest(String name, CelTestCase testCase, String dirPath) {
this.name = name;
this.testCase = testCase;
this.dirPath = dirPath;
}

public String getName() {
return name;
}

@Override
public void evaluate() throws Throwable {
String policyFile = Paths.get(dirPath, "policy.yaml").toString();

CelTestContext.Builder contextBuilder =
CelTestContext.newBuilder()
.setCelExpression(CelExpressionSource.fromSource(policyFile))
.setCel(CEL)
.addMessageTypes(
Struct.getDescriptor(), Value.getDescriptor(), ListValue.getDescriptor());

Path yamlConfigPath = Paths.get(dirPath, "config.yaml");
Path textprotoConfigPath = Paths.get(dirPath, "config.textproto");

if (Files.exists(yamlConfigPath)) {
contextBuilder.setConfigFile(yamlConfigPath.toString());
} else if (Files.exists(textprotoConfigPath)) {
contextBuilder.setConfigFile(textprotoConfigPath.toString());
}

TestRunnerLibrary.runTest(testCase, contextBuilder.build());
}
}
190 changes: 190 additions & 0 deletions conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTestRunner.java
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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import static java.nio.charset.StandardCharsets.UTF_8;

import com.google.auto.value.AutoValue;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import com.google.common.io.Files;
import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.TypeRegistry;
import com.google.protobuf.Value;
import dev.cel.testing.testrunner.CelTestSuite;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.CelTestSuiteTextProtoParser;
import dev.cel.testing.testrunner.CelTestSuiteYamlParser;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import org.junit.runner.Description;
import org.junit.runner.notification.RunNotifier;
import org.junit.runners.ParentRunner;
import org.junit.runners.model.InitializationError;

/** Custom JUnit runner for CEL policy conformance tests. */
public final class PolicyConformanceTestRunner extends ParentRunner<PolicyConformanceTest> {

private static final Splitter SPLITTER = Splitter.on(",").omitEmptyStrings();
private static final String TESTS_YAML_FILE_NAME = "tests.yaml";
private static final String TESTS_TEXTPROTO_FILE_NAME = "tests.textproto";
private static final TypeRegistry TYPE_REGISTRY =
TypeRegistry.newBuilder()
.add(Struct.getDescriptor())
.add(Value.getDescriptor())
.add(ListValue.getDescriptor())
.build();

private static final String TEST_DIRS_PROP =
System.getProperty("dev.cel.policy.conformance.tests");
private static final String TESTDATA_DIR =
System.getProperty("dev.cel.policy.conformance.testdata_dir", "testdata");
private static final String SKIP_TESTS_PROP =
System.getProperty("dev.cel.policy.conformance.skip_tests");

private static final ImmutableList<String> TESTS_TO_SKIP =
Strings.isNullOrEmpty(SKIP_TESTS_PROP)
? ImmutableList.of()
: ImmutableList.copyOf(SPLITTER.splitToList(SKIP_TESTS_PROP));

private static final ImmutableList<String> TEST_DIRS =
Strings.isNullOrEmpty(TEST_DIRS_PROP)
? discoverTestDirs(TESTDATA_DIR)
: ImmutableList.copyOf(SPLITTER.splitToList(TEST_DIRS_PROP));

private static ImmutableList<String> discoverTestDirs(String testdataDir) {
File dir = new File(testdataDir);
if (!dir.exists() || !dir.isDirectory()) {
return ImmutableList.of();
}
String[] directories = dir.list((current, name) -> new File(current, name).isDirectory());
if (directories == null) {
return ImmutableList.of();
}
Arrays.sort(directories);
return ImmutableList.copyOf(directories);
}

private final ImmutableList<PolicyConformanceTest> tests;

private ImmutableList<PolicyConformanceTest> loadTests() {
if (TEST_DIRS.isEmpty()) {
return ImmutableList.of();
}

ImmutableList.Builder<PolicyConformanceTest> testsBuilder = ImmutableList.builder();

for (String dir : TEST_DIRS) {
String fullDirPath = TESTDATA_DIR + "/" + dir;
try {
ImmutableList<CelTestSuiteContext> suites = readTestSuites(fullDirPath);
for (CelTestSuiteContext namedSuite : suites) {
for (CelTestSection section : namedSuite.testSuite().sections()) {
for (CelTestCase testCase : section.tests()) {
String baseName = String.format("%s/%s/%s", dir, section.name(), testCase.name());
String displayName = baseName + namedSuite.formatSuffix();
if (!shouldSkipTest(baseName, TESTS_TO_SKIP)) {
testsBuilder.add(new PolicyConformanceTest(displayName, testCase, fullDirPath));
}
}
}
}
} catch (Exception e) {
throw new RuntimeException("Failed to load test suite in " + fullDirPath, e);
}
}
return testsBuilder.build();
}

private static boolean shouldSkipTest(String name, List<String> testsToSkip) {
for (String testToSkip : testsToSkip) {
if (name.startsWith(testToSkip)) {
String consumedName = name.substring(testToSkip.length());
if (consumedName.isEmpty() || consumedName.startsWith("/")) {
return true;
}
}
}
return false;
}

private static ImmutableList<CelTestSuiteContext> readTestSuites(String dirPath)
throws Exception {
File dir = new File(dirPath);
File yamlFile = new File(dir, TESTS_YAML_FILE_NAME);
File textprotoFile = new File(dir, TESTS_TEXTPROTO_FILE_NAME);

boolean bothExist = yamlFile.exists() && textprotoFile.exists();
ImmutableList.Builder<CelTestSuiteContext> suitesBuilder = ImmutableList.builder();

if (yamlFile.exists()) {
suitesBuilder.add(
CelTestSuiteContext.create(
CelTestSuiteYamlParser.newInstance()
.parse(Files.asCharSource(yamlFile, UTF_8).read()),
bothExist ? " (yaml)" : ""));
}
if (textprotoFile.exists()) {
suitesBuilder.add(
CelTestSuiteContext.create(
CelTestSuiteTextProtoParser.newInstance()
.parse(Files.asCharSource(textprotoFile, UTF_8).read(), TYPE_REGISTRY),
bothExist ? " (textproto)" : ""));
}

ImmutableList<CelTestSuiteContext> suites = suitesBuilder.build();
if (suites.isEmpty()) {
throw new IllegalArgumentException(
String.format(
"No %s or %s found in %s", TESTS_YAML_FILE_NAME, TESTS_TEXTPROTO_FILE_NAME, dirPath));
}
return suites;
}

@Override
protected ImmutableList<PolicyConformanceTest> getChildren() {
return tests;
}

@Override
protected Description describeChild(PolicyConformanceTest child) {
return Description.createTestDescription(getTestClass().getJavaClass(), child.getName());
}

@Override
protected void runChild(PolicyConformanceTest child, RunNotifier notifier) {
runLeaf(child, describeChild(child), notifier);
}

public PolicyConformanceTestRunner(Class<?> clazz) throws InitializationError {
super(clazz);
this.tests = loadTests();
}

@AutoValue
abstract static class CelTestSuiteContext {
abstract CelTestSuite testSuite();

abstract String formatSuffix();

static CelTestSuiteContext create(CelTestSuite testSuite, String formatSuffix) {
return new AutoValue_PolicyConformanceTestRunner_CelTestSuiteContext(testSuite, formatSuffix);
}
}
}
21 changes: 21 additions & 0 deletions conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTests.java
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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import org.junit.runner.RunWith;

/** Main test class for CEL policy conformance tests. */
@RunWith(PolicyConformanceTestRunner.class)
public class PolicyConformanceTests {}
50 changes: 50 additions & 0 deletions conformance/src/test/java/dev/cel/conformance/policy/cel_policy_conformance_test.bzl
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# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Macro to run CEL policy conformance tests."""

load("@rules_java//java:defs.bzl", "java_test")

def cel_policy_conformance_test_java(
name,
testdata,
test_cases = [],
skip_tests = [],
**kwargs):
"""Macro to run CEL policy conformance tests for Java.

Args:
name: The name of the test target.
testdata: Testdata filegroup target.
test_cases: (optional) List of test case names (directory names) to run.
skip_tests: (optional) List of test case names (directory names) to skip.
**kwargs: Other standard Bazel target attributes.
"""

lbl = native.package_relative_label(testdata)
testdata_dir = lbl.package + "/" + lbl.name

java_test(
name = name,
jvm_flags = [
"-Ddev.cel.policy.conformance.tests=" + ",".join(test_cases),
"-Ddev.cel.policy.conformance.testdata_dir=" + testdata_dir,
"-Ddev.cel.policy.conformance.skip_tests=" + ",".join(skip_tests),
],
data = [testdata],
size = "small",
test_class = "dev.cel.conformance.policy.PolicyConformanceTests",
runtime_deps = [Label(":run")],
**kwargs
)
Loading
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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Introduce CEL Policy Conformance Test Runner for Java#1043

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 Merged

copybara-service
merged 1 commit into

from

May 1, 2026
 Merged


Introduce CEL Policy Conformance Test Runner for Java
#1043
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25 changes: 25 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/BUILD.bazel

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load("@rules_java//java:defs.bzl", "java_library")
load(":cel_policy_conformance_test.bzl", "cel_policy_conformance_test_java")

package(
 default_applicable_licenses = ["//:license"],
 default_testonly = True,
)

java_library(
 name = "run",
 srcs = glob(["*.java"]),
 deps = [
 "//:auto_value",
 "//bundle:cel",
 "//testing/testrunner:cel_expression_source",
 "//testing/testrunner:cel_test_context",
 "//testing/testrunner:cel_test_suite",
 "//testing/testrunner:cel_test_suite_text_proto_parser",
 "//testing/testrunner:cel_test_suite_yaml_parser",
 "//testing/testrunner:test_runner_library",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

72 changes: 72 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTest.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.Value;
import dev.cel.bundle.Cel;
import dev.cel.bundle.CelFactory;
import dev.cel.testing.testrunner.CelExpressionSource;
import dev.cel.testing.testrunner.CelTestContext;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.TestRunnerLibrary;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.junit.runners.model.Statement;

/** Statement representing a single CEL policy conformance test case. */
public final class PolicyConformanceTest extends Statement {

 private static final Cel CEL = CelFactory.standardCelBuilder().build();

 private final String name;
 private final CelTestCase testCase;
 private final String dirPath;

 public PolicyConformanceTest(String name, CelTestCase testCase, String dirPath) {
 this.name = name;
 this.testCase = testCase;
 this.dirPath = dirPath;
 }

 public String getName() {
 return name;
 }

 @Override
 public void evaluate() throws Throwable {
 String policyFile = Paths.get(dirPath, "policy.yaml").toString();

 CelTestContext.Builder contextBuilder =
 CelTestContext.newBuilder()
 .setCelExpression(CelExpressionSource.fromSource(policyFile))
 .setCel(CEL)
 .addMessageTypes(
 Struct.getDescriptor(), Value.getDescriptor(), ListValue.getDescriptor());

 Path yamlConfigPath = Paths.get(dirPath, "config.yaml");
 Path textprotoConfigPath = Paths.get(dirPath, "config.textproto");

 if (Files.exists(yamlConfigPath)) {
 contextBuilder.setConfigFile(yamlConfigPath.toString());
 } else if (Files.exists(textprotoConfigPath)) {
 contextBuilder.setConfigFile(textprotoConfigPath.toString());
 }

 TestRunnerLibrary.runTest(testCase, contextBuilder.build());
 }
}

190 changes: 190 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTestRunner.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import static java.nio.charset.StandardCharsets.UTF_8;

import com.google.auto.value.AutoValue;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import com.google.common.io.Files;
import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.TypeRegistry;
import com.google.protobuf.Value;
import dev.cel.testing.testrunner.CelTestSuite;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.CelTestSuiteTextProtoParser;
import dev.cel.testing.testrunner.CelTestSuiteYamlParser;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import org.junit.runner.Description;
import org.junit.runner.notification.RunNotifier;
import org.junit.runners.ParentRunner;
import org.junit.runners.model.InitializationError;

/** Custom JUnit runner for CEL policy conformance tests. */
public final class PolicyConformanceTestRunner extends ParentRunner<PolicyConformanceTest> {

 private static final Splitter SPLITTER = Splitter.on(",").omitEmptyStrings();
 private static final String TESTS_YAML_FILE_NAME = "tests.yaml";
 private static final String TESTS_TEXTPROTO_FILE_NAME = "tests.textproto";
 private static final TypeRegistry TYPE_REGISTRY =
 TypeRegistry.newBuilder()
 .add(Struct.getDescriptor())
 .add(Value.getDescriptor())
 .add(ListValue.getDescriptor())
 .build();

 private static final String TEST_DIRS_PROP =
 System.getProperty("dev.cel.policy.conformance.tests");
 private static final String TESTDATA_DIR =
 System.getProperty("dev.cel.policy.conformance.testdata_dir", "testdata");
 private static final String SKIP_TESTS_PROP =
 System.getProperty("dev.cel.policy.conformance.skip_tests");

 private static final ImmutableList<String> TESTS_TO_SKIP =
 Strings.isNullOrEmpty(SKIP_TESTS_PROP)
 ? ImmutableList.of()
 : ImmutableList.copyOf(SPLITTER.splitToList(SKIP_TESTS_PROP));

 private static final ImmutableList<String> TEST_DIRS =
 Strings.isNullOrEmpty(TEST_DIRS_PROP)
 ? discoverTestDirs(TESTDATA_DIR)
 : ImmutableList.copyOf(SPLITTER.splitToList(TEST_DIRS_PROP));

 private static ImmutableList<String> discoverTestDirs(String testdataDir) {
 File dir = new File(testdataDir);
 if (!dir.exists() || !dir.isDirectory()) {
 return ImmutableList.of();
 }
 String[] directories = dir.list((current, name) -> new File(current, name).isDirectory());
 if (directories == null) {
 return ImmutableList.of();
 }
 Arrays.sort(directories);
 return ImmutableList.copyOf(directories);
 }

 private final ImmutableList<PolicyConformanceTest> tests;

 private ImmutableList<PolicyConformanceTest> loadTests() {
 if (TEST_DIRS.isEmpty()) {
 return ImmutableList.of();
 }

 ImmutableList.Builder<PolicyConformanceTest> testsBuilder = ImmutableList.builder();

 for (String dir : TEST_DIRS) {
 String fullDirPath = TESTDATA_DIR + "/" + dir;
 try {
 ImmutableList<CelTestSuiteContext> suites = readTestSuites(fullDirPath);
 for (CelTestSuiteContext namedSuite : suites) {
 for (CelTestSection section : namedSuite.testSuite().sections()) {
 for (CelTestCase testCase : section.tests()) {
 String baseName = String.format("%s/%s/%s", dir, section.name(), testCase.name());
 String displayName = baseName + namedSuite.formatSuffix();
 if (!shouldSkipTest(baseName, TESTS_TO_SKIP)) {
 testsBuilder.add(new PolicyConformanceTest(displayName, testCase, fullDirPath));
 }
 }
 }
 }
 } catch (Exception e) {
 throw new RuntimeException("Failed to load test suite in " + fullDirPath, e);
 }
 }
 return testsBuilder.build();
 }

 private static boolean shouldSkipTest(String name, List<String> testsToSkip) {
 for (String testToSkip : testsToSkip) {
 if (name.startsWith(testToSkip)) {
 String consumedName = name.substring(testToSkip.length());
 if (consumedName.isEmpty() || consumedName.startsWith("/")) {
 return true;
 }
 }
 }
 return false;
 }

 private static ImmutableList<CelTestSuiteContext> readTestSuites(String dirPath)
 throws Exception {
 File dir = new File(dirPath);
 File yamlFile = new File(dir, TESTS_YAML_FILE_NAME);
 File textprotoFile = new File(dir, TESTS_TEXTPROTO_FILE_NAME);

 boolean bothExist = yamlFile.exists() && textprotoFile.exists();
 ImmutableList.Builder<CelTestSuiteContext> suitesBuilder = ImmutableList.builder();

 if (yamlFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteYamlParser.newInstance()
 .parse(Files.asCharSource(yamlFile, UTF_8).read()),
 bothExist ? " (yaml)" : ""));
 }
 if (textprotoFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteTextProtoParser.newInstance()
 .parse(Files.asCharSource(textprotoFile, UTF_8).read(), TYPE_REGISTRY),
 bothExist ? " (textproto)" : ""));
 }

 ImmutableList<CelTestSuiteContext> suites = suitesBuilder.build();
 if (suites.isEmpty()) {
 throw new IllegalArgumentException(
 String.format(
 "No %s or %s found in %s", TESTS_YAML_FILE_NAME, TESTS_TEXTPROTO_FILE_NAME, dirPath));
 }
 return suites;
 }

 @Override
 protected ImmutableList<PolicyConformanceTest> getChildren() {
 return tests;
 }

 @Override
 protected Description describeChild(PolicyConformanceTest child) {
 return Description.createTestDescription(getTestClass().getJavaClass(), child.getName());
 }

 @Override
 protected void runChild(PolicyConformanceTest child, RunNotifier notifier) {
 runLeaf(child, describeChild(child), notifier);
 }

 public PolicyConformanceTestRunner(Class<?> clazz) throws InitializationError {
 super(clazz);
 this.tests = loadTests();
 }

 @AutoValue
 abstract static class CelTestSuiteContext {
 abstract CelTestSuite testSuite();

 abstract String formatSuffix();

 static CelTestSuiteContext create(CelTestSuite testSuite, String formatSuffix) {
 return new AutoValue_PolicyConformanceTestRunner_CelTestSuiteContext(testSuite, formatSuffix);
 }
 }
}

21 changes: 21 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTests.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import org.junit.runner.RunWith;

/** Main test class for CEL policy conformance tests. */
@RunWith(PolicyConformanceTestRunner.class)
public class PolicyConformanceTests {}

50 changes: 50 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/cel_policy_conformance_test.bzl

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# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Macro to run CEL policy conformance tests."""

load("@rules_java//java:defs.bzl", "java_test")

def cel_policy_conformance_test_java(
 name,
 testdata,
 test_cases = [],
 skip_tests = [],
 **kwargs):
 """Macro to run CEL policy conformance tests for Java.

 Args:
 name: The name of the test target.
 testdata: Testdata filegroup target.
 test_cases: (optional) List of test case names (directory names) to run.
 skip_tests: (optional) List of test case names (directory names) to skip.
 **kwargs: Other standard Bazel target attributes.
 """

 lbl = native.package_relative_label(testdata)
 testdata_dir = lbl.package + "/" + lbl.name

 java_test(
 name = name,
 jvm_flags = [
 "-Ddev.cel.policy.conformance.tests=" + ",".join(test_cases),
 "-Ddev.cel.policy.conformance.testdata_dir=" + testdata_dir,
 "-Ddev.cel.policy.conformance.skip_tests=" + ",".join(skip_tests),
 ],
 data = [testdata],
 size = "small",
 test_class = "dev.cel.conformance.policy.PolicyConformanceTests",
 runtime_deps = [Label(":run")],
 **kwargs
 )
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Introduce CEL Policy Conformance Test Runner for Java#1043

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copybara-service
merged 1 commit into

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May 1, 2026
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Introduce CEL Policy Conformance Test Runner for Java
#1043
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25 changes: 25 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/BUILD.bazel

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load("@rules_java//java:defs.bzl", "java_library")
load(":cel_policy_conformance_test.bzl", "cel_policy_conformance_test_java")

package(
 default_applicable_licenses = ["//:license"],
 default_testonly = True,
)

java_library(
 name = "run",
 srcs = glob(["*.java"]),
 deps = [
 "//:auto_value",
 "//bundle:cel",
 "//testing/testrunner:cel_expression_source",
 "//testing/testrunner:cel_test_context",
 "//testing/testrunner:cel_test_suite",
 "//testing/testrunner:cel_test_suite_text_proto_parser",
 "//testing/testrunner:cel_test_suite_yaml_parser",
 "//testing/testrunner:test_runner_library",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

72 changes: 72 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTest.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.Value;
import dev.cel.bundle.Cel;
import dev.cel.bundle.CelFactory;
import dev.cel.testing.testrunner.CelExpressionSource;
import dev.cel.testing.testrunner.CelTestContext;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.TestRunnerLibrary;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.junit.runners.model.Statement;

/** Statement representing a single CEL policy conformance test case. */
public final class PolicyConformanceTest extends Statement {

 private static final Cel CEL = CelFactory.standardCelBuilder().build();

 private final String name;
 private final CelTestCase testCase;
 private final String dirPath;

 public PolicyConformanceTest(String name, CelTestCase testCase, String dirPath) {
 this.name = name;
 this.testCase = testCase;
 this.dirPath = dirPath;
 }

 public String getName() {
 return name;
 }

 @Override
 public void evaluate() throws Throwable {
 String policyFile = Paths.get(dirPath, "policy.yaml").toString();

 CelTestContext.Builder contextBuilder =
 CelTestContext.newBuilder()
 .setCelExpression(CelExpressionSource.fromSource(policyFile))
 .setCel(CEL)
 .addMessageTypes(
 Struct.getDescriptor(), Value.getDescriptor(), ListValue.getDescriptor());

 Path yamlConfigPath = Paths.get(dirPath, "config.yaml");
 Path textprotoConfigPath = Paths.get(dirPath, "config.textproto");

 if (Files.exists(yamlConfigPath)) {
 contextBuilder.setConfigFile(yamlConfigPath.toString());
 } else if (Files.exists(textprotoConfigPath)) {
 contextBuilder.setConfigFile(textprotoConfigPath.toString());
 }

 TestRunnerLibrary.runTest(testCase, contextBuilder.build());
 }
}

190 changes: 190 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTestRunner.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import static java.nio.charset.StandardCharsets.UTF_8;

import com.google.auto.value.AutoValue;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import com.google.common.io.Files;
import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.TypeRegistry;
import com.google.protobuf.Value;
import dev.cel.testing.testrunner.CelTestSuite;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.CelTestSuiteTextProtoParser;
import dev.cel.testing.testrunner.CelTestSuiteYamlParser;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import org.junit.runner.Description;
import org.junit.runner.notification.RunNotifier;
import org.junit.runners.ParentRunner;
import org.junit.runners.model.InitializationError;

/** Custom JUnit runner for CEL policy conformance tests. */
public final class PolicyConformanceTestRunner extends ParentRunner<PolicyConformanceTest> {

 private static final Splitter SPLITTER = Splitter.on(",").omitEmptyStrings();
 private static final String TESTS_YAML_FILE_NAME = "tests.yaml";
 private static final String TESTS_TEXTPROTO_FILE_NAME = "tests.textproto";
 private static final TypeRegistry TYPE_REGISTRY =
 TypeRegistry.newBuilder()
 .add(Struct.getDescriptor())
 .add(Value.getDescriptor())
 .add(ListValue.getDescriptor())
 .build();

 private static final String TEST_DIRS_PROP =
 System.getProperty("dev.cel.policy.conformance.tests");
 private static final String TESTDATA_DIR =
 System.getProperty("dev.cel.policy.conformance.testdata_dir", "testdata");
 private static final String SKIP_TESTS_PROP =
 System.getProperty("dev.cel.policy.conformance.skip_tests");

 private static final ImmutableList<String> TESTS_TO_SKIP =
 Strings.isNullOrEmpty(SKIP_TESTS_PROP)
 ? ImmutableList.of()
 : ImmutableList.copyOf(SPLITTER.splitToList(SKIP_TESTS_PROP));

 private static final ImmutableList<String> TEST_DIRS =
 Strings.isNullOrEmpty(TEST_DIRS_PROP)
 ? discoverTestDirs(TESTDATA_DIR)
 : ImmutableList.copyOf(SPLITTER.splitToList(TEST_DIRS_PROP));

 private static ImmutableList<String> discoverTestDirs(String testdataDir) {
 File dir = new File(testdataDir);
 if (!dir.exists() || !dir.isDirectory()) {
 return ImmutableList.of();
 }
 String[] directories = dir.list((current, name) -> new File(current, name).isDirectory());
 if (directories == null) {
 return ImmutableList.of();
 }
 Arrays.sort(directories);
 return ImmutableList.copyOf(directories);
 }

 private final ImmutableList<PolicyConformanceTest> tests;

 private ImmutableList<PolicyConformanceTest> loadTests() {
 if (TEST_DIRS.isEmpty()) {
 return ImmutableList.of();
 }

 ImmutableList.Builder<PolicyConformanceTest> testsBuilder = ImmutableList.builder();

 for (String dir : TEST_DIRS) {
 String fullDirPath = TESTDATA_DIR + "/" + dir;
 try {
 ImmutableList<CelTestSuiteContext> suites = readTestSuites(fullDirPath);
 for (CelTestSuiteContext namedSuite : suites) {
 for (CelTestSection section : namedSuite.testSuite().sections()) {
 for (CelTestCase testCase : section.tests()) {
 String baseName = String.format("%s/%s/%s", dir, section.name(), testCase.name());
 String displayName = baseName + namedSuite.formatSuffix();
 if (!shouldSkipTest(baseName, TESTS_TO_SKIP)) {
 testsBuilder.add(new PolicyConformanceTest(displayName, testCase, fullDirPath));
 }
 }
 }
 }
 } catch (Exception e) {
 throw new RuntimeException("Failed to load test suite in " + fullDirPath, e);
 }
 }
 return testsBuilder.build();
 }

 private static boolean shouldSkipTest(String name, List<String> testsToSkip) {
 for (String testToSkip : testsToSkip) {
 if (name.startsWith(testToSkip)) {
 String consumedName = name.substring(testToSkip.length());
 if (consumedName.isEmpty() || consumedName.startsWith("/")) {
 return true;
 }
 }
 }
 return false;
 }

 private static ImmutableList<CelTestSuiteContext> readTestSuites(String dirPath)
 throws Exception {
 File dir = new File(dirPath);
 File yamlFile = new File(dir, TESTS_YAML_FILE_NAME);
 File textprotoFile = new File(dir, TESTS_TEXTPROTO_FILE_NAME);

 boolean bothExist = yamlFile.exists() && textprotoFile.exists();
 ImmutableList.Builder<CelTestSuiteContext> suitesBuilder = ImmutableList.builder();

 if (yamlFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteYamlParser.newInstance()
 .parse(Files.asCharSource(yamlFile, UTF_8).read()),
 bothExist ? " (yaml)" : ""));
 }
 if (textprotoFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteTextProtoParser.newInstance()
 .parse(Files.asCharSource(textprotoFile, UTF_8).read(), TYPE_REGISTRY),
 bothExist ? " (textproto)" : ""));
 }

 ImmutableList<CelTestSuiteContext> suites = suitesBuilder.build();
 if (suites.isEmpty()) {
 throw new IllegalArgumentException(
 String.format(
 "No %s or %s found in %s", TESTS_YAML_FILE_NAME, TESTS_TEXTPROTO_FILE_NAME, dirPath));
 }
 return suites;
 }

 @Override
 protected ImmutableList<PolicyConformanceTest> getChildren() {
 return tests;
 }

 @Override
 protected Description describeChild(PolicyConformanceTest child) {
 return Description.createTestDescription(getTestClass().getJavaClass(), child.getName());
 }

 @Override
 protected void runChild(PolicyConformanceTest child, RunNotifier notifier) {
 runLeaf(child, describeChild(child), notifier);
 }

 public PolicyConformanceTestRunner(Class<?> clazz) throws InitializationError {
 super(clazz);
 this.tests = loadTests();
 }

 @AutoValue
 abstract static class CelTestSuiteContext {
 abstract CelTestSuite testSuite();

 abstract String formatSuffix();

 static CelTestSuiteContext create(CelTestSuite testSuite, String formatSuffix) {
 return new AutoValue_PolicyConformanceTestRunner_CelTestSuiteContext(testSuite, formatSuffix);
 }
 }
}

21 changes: 21 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTests.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import org.junit.runner.RunWith;

/** Main test class for CEL policy conformance tests. */
@RunWith(PolicyConformanceTestRunner.class)
public class PolicyConformanceTests {}

50 changes: 50 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/cel_policy_conformance_test.bzl

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# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Macro to run CEL policy conformance tests."""

load("@rules_java//java:defs.bzl", "java_test")

def cel_policy_conformance_test_java(
 name,
 testdata,
 test_cases = [],
 skip_tests = [],
 **kwargs):
 """Macro to run CEL policy conformance tests for Java.

 Args:
 name: The name of the test target.
 testdata: Testdata filegroup target.
 test_cases: (optional) List of test case names (directory names) to run.
 skip_tests: (optional) List of test case names (directory names) to skip.
 **kwargs: Other standard Bazel target attributes.
 """

 lbl = native.package_relative_label(testdata)
 testdata_dir = lbl.package + "/" + lbl.name

 java_test(
 name = name,
 jvm_flags = [
 "-Ddev.cel.policy.conformance.tests=" + ",".join(test_cases),
 "-Ddev.cel.policy.conformance.testdata_dir=" + testdata_dir,
 "-Ddev.cel.policy.conformance.skip_tests=" + ",".join(skip_tests),
 ],
 data = [testdata],
 size = "small",
 test_class = "dev.cel.conformance.policy.PolicyConformanceTests",
 runtime_deps = [Label(":run")],
 **kwargs
 )
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Introduce CEL Policy Conformance Test Runner for Java#1043

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to your account

 Merged

copybara-service
merged 1 commit into

from

May 1, 2026
 Merged


Introduce CEL Policy Conformance Test Runner for Java
#1043
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25 changes: 25 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/BUILD.bazel

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Original file line numberDiff line numberDiff line change
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load("@rules_java//java:defs.bzl", "java_library")
load(":cel_policy_conformance_test.bzl", "cel_policy_conformance_test_java")

package(
 default_applicable_licenses = ["//:license"],
 default_testonly = True,
)

java_library(
 name = "run",
 srcs = glob(["*.java"]),
 deps = [
 "//:auto_value",
 "//bundle:cel",
 "//testing/testrunner:cel_expression_source",
 "//testing/testrunner:cel_test_context",
 "//testing/testrunner:cel_test_suite",
 "//testing/testrunner:cel_test_suite_text_proto_parser",
 "//testing/testrunner:cel_test_suite_yaml_parser",
 "//testing/testrunner:test_runner_library",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

72 changes: 72 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTest.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.Value;
import dev.cel.bundle.Cel;
import dev.cel.bundle.CelFactory;
import dev.cel.testing.testrunner.CelExpressionSource;
import dev.cel.testing.testrunner.CelTestContext;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.TestRunnerLibrary;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.junit.runners.model.Statement;

/** Statement representing a single CEL policy conformance test case. */
public final class PolicyConformanceTest extends Statement {

 private static final Cel CEL = CelFactory.standardCelBuilder().build();

 private final String name;
 private final CelTestCase testCase;
 private final String dirPath;

 public PolicyConformanceTest(String name, CelTestCase testCase, String dirPath) {
 this.name = name;
 this.testCase = testCase;
 this.dirPath = dirPath;
 }

 public String getName() {
 return name;
 }

 @Override
 public void evaluate() throws Throwable {
 String policyFile = Paths.get(dirPath, "policy.yaml").toString();

 CelTestContext.Builder contextBuilder =
 CelTestContext.newBuilder()
 .setCelExpression(CelExpressionSource.fromSource(policyFile))
 .setCel(CEL)
 .addMessageTypes(
 Struct.getDescriptor(), Value.getDescriptor(), ListValue.getDescriptor());

 Path yamlConfigPath = Paths.get(dirPath, "config.yaml");
 Path textprotoConfigPath = Paths.get(dirPath, "config.textproto");

 if (Files.exists(yamlConfigPath)) {
 contextBuilder.setConfigFile(yamlConfigPath.toString());
 } else if (Files.exists(textprotoConfigPath)) {
 contextBuilder.setConfigFile(textprotoConfigPath.toString());
 }

 TestRunnerLibrary.runTest(testCase, contextBuilder.build());
 }
}

190 changes: 190 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTestRunner.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import static java.nio.charset.StandardCharsets.UTF_8;

import com.google.auto.value.AutoValue;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import com.google.common.io.Files;
import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.TypeRegistry;
import com.google.protobuf.Value;
import dev.cel.testing.testrunner.CelTestSuite;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.CelTestSuiteTextProtoParser;
import dev.cel.testing.testrunner.CelTestSuiteYamlParser;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import org.junit.runner.Description;
import org.junit.runner.notification.RunNotifier;
import org.junit.runners.ParentRunner;
import org.junit.runners.model.InitializationError;

/** Custom JUnit runner for CEL policy conformance tests. */
public final class PolicyConformanceTestRunner extends ParentRunner<PolicyConformanceTest> {

 private static final Splitter SPLITTER = Splitter.on(",").omitEmptyStrings();
 private static final String TESTS_YAML_FILE_NAME = "tests.yaml";
 private static final String TESTS_TEXTPROTO_FILE_NAME = "tests.textproto";
 private static final TypeRegistry TYPE_REGISTRY =
 TypeRegistry.newBuilder()
 .add(Struct.getDescriptor())
 .add(Value.getDescriptor())
 .add(ListValue.getDescriptor())
 .build();

 private static final String TEST_DIRS_PROP =
 System.getProperty("dev.cel.policy.conformance.tests");
 private static final String TESTDATA_DIR =
 System.getProperty("dev.cel.policy.conformance.testdata_dir", "testdata");
 private static final String SKIP_TESTS_PROP =
 System.getProperty("dev.cel.policy.conformance.skip_tests");

 private static final ImmutableList<String> TESTS_TO_SKIP =
 Strings.isNullOrEmpty(SKIP_TESTS_PROP)
 ? ImmutableList.of()
 : ImmutableList.copyOf(SPLITTER.splitToList(SKIP_TESTS_PROP));

 private static final ImmutableList<String> TEST_DIRS =
 Strings.isNullOrEmpty(TEST_DIRS_PROP)
 ? discoverTestDirs(TESTDATA_DIR)
 : ImmutableList.copyOf(SPLITTER.splitToList(TEST_DIRS_PROP));

 private static ImmutableList<String> discoverTestDirs(String testdataDir) {
 File dir = new File(testdataDir);
 if (!dir.exists() || !dir.isDirectory()) {
 return ImmutableList.of();
 }
 String[] directories = dir.list((current, name) -> new File(current, name).isDirectory());
 if (directories == null) {
 return ImmutableList.of();
 }
 Arrays.sort(directories);
 return ImmutableList.copyOf(directories);
 }

 private final ImmutableList<PolicyConformanceTest> tests;

 private ImmutableList<PolicyConformanceTest> loadTests() {
 if (TEST_DIRS.isEmpty()) {
 return ImmutableList.of();
 }

 ImmutableList.Builder<PolicyConformanceTest> testsBuilder = ImmutableList.builder();

 for (String dir : TEST_DIRS) {
 String fullDirPath = TESTDATA_DIR + "/" + dir;
 try {
 ImmutableList<CelTestSuiteContext> suites = readTestSuites(fullDirPath);
 for (CelTestSuiteContext namedSuite : suites) {
 for (CelTestSection section : namedSuite.testSuite().sections()) {
 for (CelTestCase testCase : section.tests()) {
 String baseName = String.format("%s/%s/%s", dir, section.name(), testCase.name());
 String displayName = baseName + namedSuite.formatSuffix();
 if (!shouldSkipTest(baseName, TESTS_TO_SKIP)) {
 testsBuilder.add(new PolicyConformanceTest(displayName, testCase, fullDirPath));
 }
 }
 }
 }
 } catch (Exception e) {
 throw new RuntimeException("Failed to load test suite in " + fullDirPath, e);
 }
 }
 return testsBuilder.build();
 }

 private static boolean shouldSkipTest(String name, List<String> testsToSkip) {
 for (String testToSkip : testsToSkip) {
 if (name.startsWith(testToSkip)) {
 String consumedName = name.substring(testToSkip.length());
 if (consumedName.isEmpty() || consumedName.startsWith("/")) {
 return true;
 }
 }
 }
 return false;
 }

 private static ImmutableList<CelTestSuiteContext> readTestSuites(String dirPath)
 throws Exception {
 File dir = new File(dirPath);
 File yamlFile = new File(dir, TESTS_YAML_FILE_NAME);
 File textprotoFile = new File(dir, TESTS_TEXTPROTO_FILE_NAME);

 boolean bothExist = yamlFile.exists() && textprotoFile.exists();
 ImmutableList.Builder<CelTestSuiteContext> suitesBuilder = ImmutableList.builder();

 if (yamlFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteYamlParser.newInstance()
 .parse(Files.asCharSource(yamlFile, UTF_8).read()),
 bothExist ? " (yaml)" : ""));
 }
 if (textprotoFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteTextProtoParser.newInstance()
 .parse(Files.asCharSource(textprotoFile, UTF_8).read(), TYPE_REGISTRY),
 bothExist ? " (textproto)" : ""));
 }

 ImmutableList<CelTestSuiteContext> suites = suitesBuilder.build();
 if (suites.isEmpty()) {
 throw new IllegalArgumentException(
 String.format(
 "No %s or %s found in %s", TESTS_YAML_FILE_NAME, TESTS_TEXTPROTO_FILE_NAME, dirPath));
 }
 return suites;
 }

 @Override
 protected ImmutableList<PolicyConformanceTest> getChildren() {
 return tests;
 }

 @Override
 protected Description describeChild(PolicyConformanceTest child) {
 return Description.createTestDescription(getTestClass().getJavaClass(), child.getName());
 }

 @Override
 protected void runChild(PolicyConformanceTest child, RunNotifier notifier) {
 runLeaf(child, describeChild(child), notifier);
 }

 public PolicyConformanceTestRunner(Class<?> clazz) throws InitializationError {
 super(clazz);
 this.tests = loadTests();
 }

 @AutoValue
 abstract static class CelTestSuiteContext {
 abstract CelTestSuite testSuite();

 abstract String formatSuffix();

 static CelTestSuiteContext create(CelTestSuite testSuite, String formatSuffix) {
 return new AutoValue_PolicyConformanceTestRunner_CelTestSuiteContext(testSuite, formatSuffix);
 }
 }
}

21 changes: 21 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTests.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import org.junit.runner.RunWith;

/** Main test class for CEL policy conformance tests. */
@RunWith(PolicyConformanceTestRunner.class)
public class PolicyConformanceTests {}

50 changes: 50 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/cel_policy_conformance_test.bzl

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# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Macro to run CEL policy conformance tests."""

load("@rules_java//java:defs.bzl", "java_test")

def cel_policy_conformance_test_java(
 name,
 testdata,
 test_cases = [],
 skip_tests = [],
 **kwargs):
 """Macro to run CEL policy conformance tests for Java.

 Args:
 name: The name of the test target.
 testdata: Testdata filegroup target.
 test_cases: (optional) List of test case names (directory names) to run.
 skip_tests: (optional) List of test case names (directory names) to skip.
 **kwargs: Other standard Bazel target attributes.
 """

 lbl = native.package_relative_label(testdata)
 testdata_dir = lbl.package + "/" + lbl.name

 java_test(
 name = name,
 jvm_flags = [
 "-Ddev.cel.policy.conformance.tests=" + ",".join(test_cases),
 "-Ddev.cel.policy.conformance.testdata_dir=" + testdata_dir,
 "-Ddev.cel.policy.conformance.skip_tests=" + ",".join(skip_tests),
 ],
 data = [testdata],
 size = "small",
 test_class = "dev.cel.conformance.policy.PolicyConformanceTests",
 runtime_deps = [Label(":run")],
 **kwargs
 )
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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Introduce CEL Policy Conformance Test Runner for Java#1043

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May 1, 2026
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Introduce CEL Policy Conformance Test Runner for Java
#1043
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25 changes: 25 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/BUILD.bazel

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load("@rules_java//java:defs.bzl", "java_library")
load(":cel_policy_conformance_test.bzl", "cel_policy_conformance_test_java")

package(
 default_applicable_licenses = ["//:license"],
 default_testonly = True,
)

java_library(
 name = "run",
 srcs = glob(["*.java"]),
 deps = [
 "//:auto_value",
 "//bundle:cel",
 "//testing/testrunner:cel_expression_source",
 "//testing/testrunner:cel_test_context",
 "//testing/testrunner:cel_test_suite",
 "//testing/testrunner:cel_test_suite_text_proto_parser",
 "//testing/testrunner:cel_test_suite_yaml_parser",
 "//testing/testrunner:test_runner_library",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

72 changes: 72 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTest.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.Value;
import dev.cel.bundle.Cel;
import dev.cel.bundle.CelFactory;
import dev.cel.testing.testrunner.CelExpressionSource;
import dev.cel.testing.testrunner.CelTestContext;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.TestRunnerLibrary;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.junit.runners.model.Statement;

/** Statement representing a single CEL policy conformance test case. */
public final class PolicyConformanceTest extends Statement {

 private static final Cel CEL = CelFactory.standardCelBuilder().build();

 private final String name;
 private final CelTestCase testCase;
 private final String dirPath;

 public PolicyConformanceTest(String name, CelTestCase testCase, String dirPath) {
 this.name = name;
 this.testCase = testCase;
 this.dirPath = dirPath;
 }

 public String getName() {
 return name;
 }

 @Override
 public void evaluate() throws Throwable {
 String policyFile = Paths.get(dirPath, "policy.yaml").toString();

 CelTestContext.Builder contextBuilder =
 CelTestContext.newBuilder()
 .setCelExpression(CelExpressionSource.fromSource(policyFile))
 .setCel(CEL)
 .addMessageTypes(
 Struct.getDescriptor(), Value.getDescriptor(), ListValue.getDescriptor());

 Path yamlConfigPath = Paths.get(dirPath, "config.yaml");
 Path textprotoConfigPath = Paths.get(dirPath, "config.textproto");

 if (Files.exists(yamlConfigPath)) {
 contextBuilder.setConfigFile(yamlConfigPath.toString());
 } else if (Files.exists(textprotoConfigPath)) {
 contextBuilder.setConfigFile(textprotoConfigPath.toString());
 }

 TestRunnerLibrary.runTest(testCase, contextBuilder.build());
 }
}

190 changes: 190 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTestRunner.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import static java.nio.charset.StandardCharsets.UTF_8;

import com.google.auto.value.AutoValue;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import com.google.common.io.Files;
import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.TypeRegistry;
import com.google.protobuf.Value;
import dev.cel.testing.testrunner.CelTestSuite;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.CelTestSuiteTextProtoParser;
import dev.cel.testing.testrunner.CelTestSuiteYamlParser;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import org.junit.runner.Description;
import org.junit.runner.notification.RunNotifier;
import org.junit.runners.ParentRunner;
import org.junit.runners.model.InitializationError;

/** Custom JUnit runner for CEL policy conformance tests. */
public final class PolicyConformanceTestRunner extends ParentRunner<PolicyConformanceTest> {

 private static final Splitter SPLITTER = Splitter.on(",").omitEmptyStrings();
 private static final String TESTS_YAML_FILE_NAME = "tests.yaml";
 private static final String TESTS_TEXTPROTO_FILE_NAME = "tests.textproto";
 private static final TypeRegistry TYPE_REGISTRY =
 TypeRegistry.newBuilder()
 .add(Struct.getDescriptor())
 .add(Value.getDescriptor())
 .add(ListValue.getDescriptor())
 .build();

 private static final String TEST_DIRS_PROP =
 System.getProperty("dev.cel.policy.conformance.tests");
 private static final String TESTDATA_DIR =
 System.getProperty("dev.cel.policy.conformance.testdata_dir", "testdata");
 private static final String SKIP_TESTS_PROP =
 System.getProperty("dev.cel.policy.conformance.skip_tests");

 private static final ImmutableList<String> TESTS_TO_SKIP =
 Strings.isNullOrEmpty(SKIP_TESTS_PROP)
 ? ImmutableList.of()
 : ImmutableList.copyOf(SPLITTER.splitToList(SKIP_TESTS_PROP));

 private static final ImmutableList<String> TEST_DIRS =
 Strings.isNullOrEmpty(TEST_DIRS_PROP)
 ? discoverTestDirs(TESTDATA_DIR)
 : ImmutableList.copyOf(SPLITTER.splitToList(TEST_DIRS_PROP));

 private static ImmutableList<String> discoverTestDirs(String testdataDir) {
 File dir = new File(testdataDir);
 if (!dir.exists() || !dir.isDirectory()) {
 return ImmutableList.of();
 }
 String[] directories = dir.list((current, name) -> new File(current, name).isDirectory());
 if (directories == null) {
 return ImmutableList.of();
 }
 Arrays.sort(directories);
 return ImmutableList.copyOf(directories);
 }

 private final ImmutableList<PolicyConformanceTest> tests;

 private ImmutableList<PolicyConformanceTest> loadTests() {
 if (TEST_DIRS.isEmpty()) {
 return ImmutableList.of();
 }

 ImmutableList.Builder<PolicyConformanceTest> testsBuilder = ImmutableList.builder();

 for (String dir : TEST_DIRS) {
 String fullDirPath = TESTDATA_DIR + "/" + dir;
 try {
 ImmutableList<CelTestSuiteContext> suites = readTestSuites(fullDirPath);
 for (CelTestSuiteContext namedSuite : suites) {
 for (CelTestSection section : namedSuite.testSuite().sections()) {
 for (CelTestCase testCase : section.tests()) {
 String baseName = String.format("%s/%s/%s", dir, section.name(), testCase.name());
 String displayName = baseName + namedSuite.formatSuffix();
 if (!shouldSkipTest(baseName, TESTS_TO_SKIP)) {
 testsBuilder.add(new PolicyConformanceTest(displayName, testCase, fullDirPath));
 }
 }
 }
 }
 } catch (Exception e) {
 throw new RuntimeException("Failed to load test suite in " + fullDirPath, e);
 }
 }
 return testsBuilder.build();
 }

 private static boolean shouldSkipTest(String name, List<String> testsToSkip) {
 for (String testToSkip : testsToSkip) {
 if (name.startsWith(testToSkip)) {
 String consumedName = name.substring(testToSkip.length());
 if (consumedName.isEmpty() || consumedName.startsWith("/")) {
 return true;
 }
 }
 }
 return false;
 }

 private static ImmutableList<CelTestSuiteContext> readTestSuites(String dirPath)
 throws Exception {
 File dir = new File(dirPath);
 File yamlFile = new File(dir, TESTS_YAML_FILE_NAME);
 File textprotoFile = new File(dir, TESTS_TEXTPROTO_FILE_NAME);

 boolean bothExist = yamlFile.exists() && textprotoFile.exists();
 ImmutableList.Builder<CelTestSuiteContext> suitesBuilder = ImmutableList.builder();

 if (yamlFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteYamlParser.newInstance()
 .parse(Files.asCharSource(yamlFile, UTF_8).read()),
 bothExist ? " (yaml)" : ""));
 }
 if (textprotoFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteTextProtoParser.newInstance()
 .parse(Files.asCharSource(textprotoFile, UTF_8).read(), TYPE_REGISTRY),
 bothExist ? " (textproto)" : ""));
 }

 ImmutableList<CelTestSuiteContext> suites = suitesBuilder.build();
 if (suites.isEmpty()) {
 throw new IllegalArgumentException(
 String.format(
 "No %s or %s found in %s", TESTS_YAML_FILE_NAME, TESTS_TEXTPROTO_FILE_NAME, dirPath));
 }
 return suites;
 }

 @Override
 protected ImmutableList<PolicyConformanceTest> getChildren() {
 return tests;
 }

 @Override
 protected Description describeChild(PolicyConformanceTest child) {
 return Description.createTestDescription(getTestClass().getJavaClass(), child.getName());
 }

 @Override
 protected void runChild(PolicyConformanceTest child, RunNotifier notifier) {
 runLeaf(child, describeChild(child), notifier);
 }

 public PolicyConformanceTestRunner(Class<?> clazz) throws InitializationError {
 super(clazz);
 this.tests = loadTests();
 }

 @AutoValue
 abstract static class CelTestSuiteContext {
 abstract CelTestSuite testSuite();

 abstract String formatSuffix();

 static CelTestSuiteContext create(CelTestSuite testSuite, String formatSuffix) {
 return new AutoValue_PolicyConformanceTestRunner_CelTestSuiteContext(testSuite, formatSuffix);
 }
 }
}

21 changes: 21 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTests.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import org.junit.runner.RunWith;

/** Main test class for CEL policy conformance tests. */
@RunWith(PolicyConformanceTestRunner.class)
public class PolicyConformanceTests {}

50 changes: 50 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/cel_policy_conformance_test.bzl

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Original file line numberDiff line numberDiff line change
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# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Macro to run CEL policy conformance tests."""

load("@rules_java//java:defs.bzl", "java_test")

def cel_policy_conformance_test_java(
 name,
 testdata,
 test_cases = [],
 skip_tests = [],
 **kwargs):
 """Macro to run CEL policy conformance tests for Java.

 Args:
 name: The name of the test target.
 testdata: Testdata filegroup target.
 test_cases: (optional) List of test case names (directory names) to run.
 skip_tests: (optional) List of test case names (directory names) to skip.
 **kwargs: Other standard Bazel target attributes.
 """

 lbl = native.package_relative_label(testdata)
 testdata_dir = lbl.package + "/" + lbl.name

 java_test(
 name = name,
 jvm_flags = [
 "-Ddev.cel.policy.conformance.tests=" + ",".join(test_cases),
 "-Ddev.cel.policy.conformance.testdata_dir=" + testdata_dir,
 "-Ddev.cel.policy.conformance.skip_tests=" + ",".join(skip_tests),
 ],
 data = [testdata],
 size = "small",
 test_class = "dev.cel.conformance.policy.PolicyConformanceTests",
 runtime_deps = [Label(":run")],
 **kwargs
 )
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Introduce CEL Policy Conformance Test Runner for Java#1043

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

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Introduce CEL Policy Conformance Test Runner for Java
#1043
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25 changes: 25 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/BUILD.bazel

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load("@rules_java//java:defs.bzl", "java_library")
load(":cel_policy_conformance_test.bzl", "cel_policy_conformance_test_java")

package(
 default_applicable_licenses = ["//:license"],
 default_testonly = True,
)

java_library(
 name = "run",
 srcs = glob(["*.java"]),
 deps = [
 "//:auto_value",
 "//bundle:cel",
 "//testing/testrunner:cel_expression_source",
 "//testing/testrunner:cel_test_context",
 "//testing/testrunner:cel_test_suite",
 "//testing/testrunner:cel_test_suite_text_proto_parser",
 "//testing/testrunner:cel_test_suite_yaml_parser",
 "//testing/testrunner:test_runner_library",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

72 changes: 72 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTest.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.Value;
import dev.cel.bundle.Cel;
import dev.cel.bundle.CelFactory;
import dev.cel.testing.testrunner.CelExpressionSource;
import dev.cel.testing.testrunner.CelTestContext;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.TestRunnerLibrary;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.junit.runners.model.Statement;

/** Statement representing a single CEL policy conformance test case. */
public final class PolicyConformanceTest extends Statement {

 private static final Cel CEL = CelFactory.standardCelBuilder().build();

 private final String name;
 private final CelTestCase testCase;
 private final String dirPath;

 public PolicyConformanceTest(String name, CelTestCase testCase, String dirPath) {
 this.name = name;
 this.testCase = testCase;
 this.dirPath = dirPath;
 }

 public String getName() {
 return name;
 }

 @Override
 public void evaluate() throws Throwable {
 String policyFile = Paths.get(dirPath, "policy.yaml").toString();

 CelTestContext.Builder contextBuilder =
 CelTestContext.newBuilder()
 .setCelExpression(CelExpressionSource.fromSource(policyFile))
 .setCel(CEL)
 .addMessageTypes(
 Struct.getDescriptor(), Value.getDescriptor(), ListValue.getDescriptor());

 Path yamlConfigPath = Paths.get(dirPath, "config.yaml");
 Path textprotoConfigPath = Paths.get(dirPath, "config.textproto");

 if (Files.exists(yamlConfigPath)) {
 contextBuilder.setConfigFile(yamlConfigPath.toString());
 } else if (Files.exists(textprotoConfigPath)) {
 contextBuilder.setConfigFile(textprotoConfigPath.toString());
 }

 TestRunnerLibrary.runTest(testCase, contextBuilder.build());
 }
}

190 changes: 190 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTestRunner.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import static java.nio.charset.StandardCharsets.UTF_8;

import com.google.auto.value.AutoValue;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import com.google.common.io.Files;
import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.TypeRegistry;
import com.google.protobuf.Value;
import dev.cel.testing.testrunner.CelTestSuite;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.CelTestSuiteTextProtoParser;
import dev.cel.testing.testrunner.CelTestSuiteYamlParser;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import org.junit.runner.Description;
import org.junit.runner.notification.RunNotifier;
import org.junit.runners.ParentRunner;
import org.junit.runners.model.InitializationError;

/** Custom JUnit runner for CEL policy conformance tests. */
public final class PolicyConformanceTestRunner extends ParentRunner<PolicyConformanceTest> {

 private static final Splitter SPLITTER = Splitter.on(",").omitEmptyStrings();
 private static final String TESTS_YAML_FILE_NAME = "tests.yaml";
 private static final String TESTS_TEXTPROTO_FILE_NAME = "tests.textproto";
 private static final TypeRegistry TYPE_REGISTRY =
 TypeRegistry.newBuilder()
 .add(Struct.getDescriptor())
 .add(Value.getDescriptor())
 .add(ListValue.getDescriptor())
 .build();

 private static final String TEST_DIRS_PROP =
 System.getProperty("dev.cel.policy.conformance.tests");
 private static final String TESTDATA_DIR =
 System.getProperty("dev.cel.policy.conformance.testdata_dir", "testdata");
 private static final String SKIP_TESTS_PROP =
 System.getProperty("dev.cel.policy.conformance.skip_tests");

 private static final ImmutableList<String> TESTS_TO_SKIP =
 Strings.isNullOrEmpty(SKIP_TESTS_PROP)
 ? ImmutableList.of()
 : ImmutableList.copyOf(SPLITTER.splitToList(SKIP_TESTS_PROP));

 private static final ImmutableList<String> TEST_DIRS =
 Strings.isNullOrEmpty(TEST_DIRS_PROP)
 ? discoverTestDirs(TESTDATA_DIR)
 : ImmutableList.copyOf(SPLITTER.splitToList(TEST_DIRS_PROP));

 private static ImmutableList<String> discoverTestDirs(String testdataDir) {
 File dir = new File(testdataDir);
 if (!dir.exists() || !dir.isDirectory()) {
 return ImmutableList.of();
 }
 String[] directories = dir.list((current, name) -> new File(current, name).isDirectory());
 if (directories == null) {
 return ImmutableList.of();
 }
 Arrays.sort(directories);
 return ImmutableList.copyOf(directories);
 }

 private final ImmutableList<PolicyConformanceTest> tests;

 private ImmutableList<PolicyConformanceTest> loadTests() {
 if (TEST_DIRS.isEmpty()) {
 return ImmutableList.of();
 }

 ImmutableList.Builder<PolicyConformanceTest> testsBuilder = ImmutableList.builder();

 for (String dir : TEST_DIRS) {
 String fullDirPath = TESTDATA_DIR + "/" + dir;
 try {
 ImmutableList<CelTestSuiteContext> suites = readTestSuites(fullDirPath);
 for (CelTestSuiteContext namedSuite : suites) {
 for (CelTestSection section : namedSuite.testSuite().sections()) {
 for (CelTestCase testCase : section.tests()) {
 String baseName = String.format("%s/%s/%s", dir, section.name(), testCase.name());
 String displayName = baseName + namedSuite.formatSuffix();
 if (!shouldSkipTest(baseName, TESTS_TO_SKIP)) {
 testsBuilder.add(new PolicyConformanceTest(displayName, testCase, fullDirPath));
 }
 }
 }
 }
 } catch (Exception e) {
 throw new RuntimeException("Failed to load test suite in " + fullDirPath, e);
 }
 }
 return testsBuilder.build();
 }

 private static boolean shouldSkipTest(String name, List<String> testsToSkip) {
 for (String testToSkip : testsToSkip) {
 if (name.startsWith(testToSkip)) {
 String consumedName = name.substring(testToSkip.length());
 if (consumedName.isEmpty() || consumedName.startsWith("/")) {
 return true;
 }
 }
 }
 return false;
 }

 private static ImmutableList<CelTestSuiteContext> readTestSuites(String dirPath)
 throws Exception {
 File dir = new File(dirPath);
 File yamlFile = new File(dir, TESTS_YAML_FILE_NAME);
 File textprotoFile = new File(dir, TESTS_TEXTPROTO_FILE_NAME);

 boolean bothExist = yamlFile.exists() && textprotoFile.exists();
 ImmutableList.Builder<CelTestSuiteContext> suitesBuilder = ImmutableList.builder();

 if (yamlFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteYamlParser.newInstance()
 .parse(Files.asCharSource(yamlFile, UTF_8).read()),
 bothExist ? " (yaml)" : ""));
 }
 if (textprotoFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteTextProtoParser.newInstance()
 .parse(Files.asCharSource(textprotoFile, UTF_8).read(), TYPE_REGISTRY),
 bothExist ? " (textproto)" : ""));
 }

 ImmutableList<CelTestSuiteContext> suites = suitesBuilder.build();
 if (suites.isEmpty()) {
 throw new IllegalArgumentException(
 String.format(
 "No %s or %s found in %s", TESTS_YAML_FILE_NAME, TESTS_TEXTPROTO_FILE_NAME, dirPath));
 }
 return suites;
 }

 @Override
 protected ImmutableList<PolicyConformanceTest> getChildren() {
 return tests;
 }

 @Override
 protected Description describeChild(PolicyConformanceTest child) {
 return Description.createTestDescription(getTestClass().getJavaClass(), child.getName());
 }

 @Override
 protected void runChild(PolicyConformanceTest child, RunNotifier notifier) {
 runLeaf(child, describeChild(child), notifier);
 }

 public PolicyConformanceTestRunner(Class<?> clazz) throws InitializationError {
 super(clazz);
 this.tests = loadTests();
 }

 @AutoValue
 abstract static class CelTestSuiteContext {
 abstract CelTestSuite testSuite();

 abstract String formatSuffix();

 static CelTestSuiteContext create(CelTestSuite testSuite, String formatSuffix) {
 return new AutoValue_PolicyConformanceTestRunner_CelTestSuiteContext(testSuite, formatSuffix);
 }
 }
}

21 changes: 21 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTests.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import org.junit.runner.RunWith;

/** Main test class for CEL policy conformance tests. */
@RunWith(PolicyConformanceTestRunner.class)
public class PolicyConformanceTests {}

50 changes: 50 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/cel_policy_conformance_test.bzl

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# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Macro to run CEL policy conformance tests."""

load("@rules_java//java:defs.bzl", "java_test")

def cel_policy_conformance_test_java(
 name,
 testdata,
 test_cases = [],
 skip_tests = [],
 **kwargs):
 """Macro to run CEL policy conformance tests for Java.

 Args:
 name: The name of the test target.
 testdata: Testdata filegroup target.
 test_cases: (optional) List of test case names (directory names) to run.
 skip_tests: (optional) List of test case names (directory names) to skip.
 **kwargs: Other standard Bazel target attributes.
 """

 lbl = native.package_relative_label(testdata)
 testdata_dir = lbl.package + "/" + lbl.name

 java_test(
 name = name,
 jvm_flags = [
 "-Ddev.cel.policy.conformance.tests=" + ",".join(test_cases),
 "-Ddev.cel.policy.conformance.testdata_dir=" + testdata_dir,
 "-Ddev.cel.policy.conformance.skip_tests=" + ",".join(skip_tests),
 ],
 data = [testdata],
 size = "small",
 test_class = "dev.cel.conformance.policy.PolicyConformanceTests",
 runtime_deps = [Label(":run")],
 **kwargs
 )
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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 Merged

copybara-service
merged 1 commit into

from

May 1, 2026
 Merged


Introduce CEL Policy Conformance Test Runner for Java
#1043
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25 changes: 25 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/BUILD.bazel

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load("@rules_java//java:defs.bzl", "java_library")
load(":cel_policy_conformance_test.bzl", "cel_policy_conformance_test_java")

package(
 default_applicable_licenses = ["//:license"],
 default_testonly = True,
)

java_library(
 name = "run",
 srcs = glob(["*.java"]),
 deps = [
 "//:auto_value",
 "//bundle:cel",
 "//testing/testrunner:cel_expression_source",
 "//testing/testrunner:cel_test_context",
 "//testing/testrunner:cel_test_suite",
 "//testing/testrunner:cel_test_suite_text_proto_parser",
 "//testing/testrunner:cel_test_suite_yaml_parser",
 "//testing/testrunner:test_runner_library",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

72 changes: 72 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTest.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.Value;
import dev.cel.bundle.Cel;
import dev.cel.bundle.CelFactory;
import dev.cel.testing.testrunner.CelExpressionSource;
import dev.cel.testing.testrunner.CelTestContext;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.TestRunnerLibrary;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.junit.runners.model.Statement;

/** Statement representing a single CEL policy conformance test case. */
public final class PolicyConformanceTest extends Statement {

 private static final Cel CEL = CelFactory.standardCelBuilder().build();

 private final String name;
 private final CelTestCase testCase;
 private final String dirPath;

 public PolicyConformanceTest(String name, CelTestCase testCase, String dirPath) {
 this.name = name;
 this.testCase = testCase;
 this.dirPath = dirPath;
 }

 public String getName() {
 return name;
 }

 @Override
 public void evaluate() throws Throwable {
 String policyFile = Paths.get(dirPath, "policy.yaml").toString();

 CelTestContext.Builder contextBuilder =
 CelTestContext.newBuilder()
 .setCelExpression(CelExpressionSource.fromSource(policyFile))
 .setCel(CEL)
 .addMessageTypes(
 Struct.getDescriptor(), Value.getDescriptor(), ListValue.getDescriptor());

 Path yamlConfigPath = Paths.get(dirPath, "config.yaml");
 Path textprotoConfigPath = Paths.get(dirPath, "config.textproto");

 if (Files.exists(yamlConfigPath)) {
 contextBuilder.setConfigFile(yamlConfigPath.toString());
 } else if (Files.exists(textprotoConfigPath)) {
 contextBuilder.setConfigFile(textprotoConfigPath.toString());
 }

 TestRunnerLibrary.runTest(testCase, contextBuilder.build());
 }
}

190 changes: 190 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTestRunner.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import static java.nio.charset.StandardCharsets.UTF_8;

import com.google.auto.value.AutoValue;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import com.google.common.io.Files;
import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.TypeRegistry;
import com.google.protobuf.Value;
import dev.cel.testing.testrunner.CelTestSuite;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.CelTestSuiteTextProtoParser;
import dev.cel.testing.testrunner.CelTestSuiteYamlParser;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import org.junit.runner.Description;
import org.junit.runner.notification.RunNotifier;
import org.junit.runners.ParentRunner;
import org.junit.runners.model.InitializationError;

/** Custom JUnit runner for CEL policy conformance tests. */
public final class PolicyConformanceTestRunner extends ParentRunner<PolicyConformanceTest> {

 private static final Splitter SPLITTER = Splitter.on(",").omitEmptyStrings();
 private static final String TESTS_YAML_FILE_NAME = "tests.yaml";
 private static final String TESTS_TEXTPROTO_FILE_NAME = "tests.textproto";
 private static final TypeRegistry TYPE_REGISTRY =
 TypeRegistry.newBuilder()
 .add(Struct.getDescriptor())
 .add(Value.getDescriptor())
 .add(ListValue.getDescriptor())
 .build();

 private static final String TEST_DIRS_PROP =
 System.getProperty("dev.cel.policy.conformance.tests");
 private static final String TESTDATA_DIR =
 System.getProperty("dev.cel.policy.conformance.testdata_dir", "testdata");
 private static final String SKIP_TESTS_PROP =
 System.getProperty("dev.cel.policy.conformance.skip_tests");

 private static final ImmutableList<String> TESTS_TO_SKIP =
 Strings.isNullOrEmpty(SKIP_TESTS_PROP)
 ? ImmutableList.of()
 : ImmutableList.copyOf(SPLITTER.splitToList(SKIP_TESTS_PROP));

 private static final ImmutableList<String> TEST_DIRS =
 Strings.isNullOrEmpty(TEST_DIRS_PROP)
 ? discoverTestDirs(TESTDATA_DIR)
 : ImmutableList.copyOf(SPLITTER.splitToList(TEST_DIRS_PROP));

 private static ImmutableList<String> discoverTestDirs(String testdataDir) {
 File dir = new File(testdataDir);
 if (!dir.exists() || !dir.isDirectory()) {
 return ImmutableList.of();
 }
 String[] directories = dir.list((current, name) -> new File(current, name).isDirectory());
 if (directories == null) {
 return ImmutableList.of();
 }
 Arrays.sort(directories);
 return ImmutableList.copyOf(directories);
 }

 private final ImmutableList<PolicyConformanceTest> tests;

 private ImmutableList<PolicyConformanceTest> loadTests() {
 if (TEST_DIRS.isEmpty()) {
 return ImmutableList.of();
 }

 ImmutableList.Builder<PolicyConformanceTest> testsBuilder = ImmutableList.builder();

 for (String dir : TEST_DIRS) {
 String fullDirPath = TESTDATA_DIR + "/" + dir;
 try {
 ImmutableList<CelTestSuiteContext> suites = readTestSuites(fullDirPath);
 for (CelTestSuiteContext namedSuite : suites) {
 for (CelTestSection section : namedSuite.testSuite().sections()) {
 for (CelTestCase testCase : section.tests()) {
 String baseName = String.format("%s/%s/%s", dir, section.name(), testCase.name());
 String displayName = baseName + namedSuite.formatSuffix();
 if (!shouldSkipTest(baseName, TESTS_TO_SKIP)) {
 testsBuilder.add(new PolicyConformanceTest(displayName, testCase, fullDirPath));
 }
 }
 }
 }
 } catch (Exception e) {
 throw new RuntimeException("Failed to load test suite in " + fullDirPath, e);
 }
 }
 return testsBuilder.build();
 }

 private static boolean shouldSkipTest(String name, List<String> testsToSkip) {
 for (String testToSkip : testsToSkip) {
 if (name.startsWith(testToSkip)) {
 String consumedName = name.substring(testToSkip.length());
 if (consumedName.isEmpty() || consumedName.startsWith("/")) {
 return true;
 }
 }
 }
 return false;
 }

 private static ImmutableList<CelTestSuiteContext> readTestSuites(String dirPath)
 throws Exception {
 File dir = new File(dirPath);
 File yamlFile = new File(dir, TESTS_YAML_FILE_NAME);
 File textprotoFile = new File(dir, TESTS_TEXTPROTO_FILE_NAME);

 boolean bothExist = yamlFile.exists() && textprotoFile.exists();
 ImmutableList.Builder<CelTestSuiteContext> suitesBuilder = ImmutableList.builder();

 if (yamlFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteYamlParser.newInstance()
 .parse(Files.asCharSource(yamlFile, UTF_8).read()),
 bothExist ? " (yaml)" : ""));
 }
 if (textprotoFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteTextProtoParser.newInstance()
 .parse(Files.asCharSource(textprotoFile, UTF_8).read(), TYPE_REGISTRY),
 bothExist ? " (textproto)" : ""));
 }

 ImmutableList<CelTestSuiteContext> suites = suitesBuilder.build();
 if (suites.isEmpty()) {
 throw new IllegalArgumentException(
 String.format(
 "No %s or %s found in %s", TESTS_YAML_FILE_NAME, TESTS_TEXTPROTO_FILE_NAME, dirPath));
 }
 return suites;
 }

 @Override
 protected ImmutableList<PolicyConformanceTest> getChildren() {
 return tests;
 }

 @Override
 protected Description describeChild(PolicyConformanceTest child) {
 return Description.createTestDescription(getTestClass().getJavaClass(), child.getName());
 }

 @Override
 protected void runChild(PolicyConformanceTest child, RunNotifier notifier) {
 runLeaf(child, describeChild(child), notifier);
 }

 public PolicyConformanceTestRunner(Class<?> clazz) throws InitializationError {
 super(clazz);
 this.tests = loadTests();
 }

 @AutoValue
 abstract static class CelTestSuiteContext {
 abstract CelTestSuite testSuite();

 abstract String formatSuffix();

 static CelTestSuiteContext create(CelTestSuite testSuite, String formatSuffix) {
 return new AutoValue_PolicyConformanceTestRunner_CelTestSuiteContext(testSuite, formatSuffix);
 }
 }
}

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conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTests.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import org.junit.runner.RunWith;

/** Main test class for CEL policy conformance tests. */
@RunWith(PolicyConformanceTestRunner.class)
public class PolicyConformanceTests {}

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conformance/src/test/java/dev/cel/conformance/policy/cel_policy_conformance_test.bzl

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# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Macro to run CEL policy conformance tests."""

load("@rules_java//java:defs.bzl", "java_test")

def cel_policy_conformance_test_java(
 name,
 testdata,
 test_cases = [],
 skip_tests = [],
 **kwargs):
 """Macro to run CEL policy conformance tests for Java.

 Args:
 name: The name of the test target.
 testdata: Testdata filegroup target.
 test_cases: (optional) List of test case names (directory names) to run.
 skip_tests: (optional) List of test case names (directory names) to skip.
 **kwargs: Other standard Bazel target attributes.
 """

 lbl = native.package_relative_label(testdata)
 testdata_dir = lbl.package + "/" + lbl.name

 java_test(
 name = name,
 jvm_flags = [
 "-Ddev.cel.policy.conformance.tests=" + ",".join(test_cases),
 "-Ddev.cel.policy.conformance.testdata_dir=" + testdata_dir,
 "-Ddev.cel.policy.conformance.skip_tests=" + ",".join(skip_tests),
 ],
 data = [testdata],
 size = "small",
 test_class = "dev.cel.conformance.policy.PolicyConformanceTests",
 runtime_deps = [Label(":run")],
 **kwargs
 )
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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Introduce CEL Policy Conformance Test Runner for Java#1043

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 Merged

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May 1, 2026
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Introduce CEL Policy Conformance Test Runner for Java
#1043
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25 changes: 25 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/BUILD.bazel

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load("@rules_java//java:defs.bzl", "java_library")
load(":cel_policy_conformance_test.bzl", "cel_policy_conformance_test_java")

package(
 default_applicable_licenses = ["//:license"],
 default_testonly = True,
)

java_library(
 name = "run",
 srcs = glob(["*.java"]),
 deps = [
 "//:auto_value",
 "//bundle:cel",
 "//testing/testrunner:cel_expression_source",
 "//testing/testrunner:cel_test_context",
 "//testing/testrunner:cel_test_suite",
 "//testing/testrunner:cel_test_suite_text_proto_parser",
 "//testing/testrunner:cel_test_suite_yaml_parser",
 "//testing/testrunner:test_runner_library",
 "@maven//:com_google_guava_guava",
 "@maven//:com_google_protobuf_protobuf_java",
 "@maven//:junit_junit",
 ],
)

72 changes: 72 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTest.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.Value;
import dev.cel.bundle.Cel;
import dev.cel.bundle.CelFactory;
import dev.cel.testing.testrunner.CelExpressionSource;
import dev.cel.testing.testrunner.CelTestContext;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.TestRunnerLibrary;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.junit.runners.model.Statement;

/** Statement representing a single CEL policy conformance test case. */
public final class PolicyConformanceTest extends Statement {

 private static final Cel CEL = CelFactory.standardCelBuilder().build();

 private final String name;
 private final CelTestCase testCase;
 private final String dirPath;

 public PolicyConformanceTest(String name, CelTestCase testCase, String dirPath) {
 this.name = name;
 this.testCase = testCase;
 this.dirPath = dirPath;
 }

 public String getName() {
 return name;
 }

 @Override
 public void evaluate() throws Throwable {
 String policyFile = Paths.get(dirPath, "policy.yaml").toString();

 CelTestContext.Builder contextBuilder =
 CelTestContext.newBuilder()
 .setCelExpression(CelExpressionSource.fromSource(policyFile))
 .setCel(CEL)
 .addMessageTypes(
 Struct.getDescriptor(), Value.getDescriptor(), ListValue.getDescriptor());

 Path yamlConfigPath = Paths.get(dirPath, "config.yaml");
 Path textprotoConfigPath = Paths.get(dirPath, "config.textproto");

 if (Files.exists(yamlConfigPath)) {
 contextBuilder.setConfigFile(yamlConfigPath.toString());
 } else if (Files.exists(textprotoConfigPath)) {
 contextBuilder.setConfigFile(textprotoConfigPath.toString());
 }

 TestRunnerLibrary.runTest(testCase, contextBuilder.build());
 }
}

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conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTestRunner.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import static java.nio.charset.StandardCharsets.UTF_8;

import com.google.auto.value.AutoValue;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import com.google.common.io.Files;
import com.google.protobuf.ListValue;
import com.google.protobuf.Struct;
import com.google.protobuf.TypeRegistry;
import com.google.protobuf.Value;
import dev.cel.testing.testrunner.CelTestSuite;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection;
import dev.cel.testing.testrunner.CelTestSuite.CelTestSection.CelTestCase;
import dev.cel.testing.testrunner.CelTestSuiteTextProtoParser;
import dev.cel.testing.testrunner.CelTestSuiteYamlParser;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import org.junit.runner.Description;
import org.junit.runner.notification.RunNotifier;
import org.junit.runners.ParentRunner;
import org.junit.runners.model.InitializationError;

/** Custom JUnit runner for CEL policy conformance tests. */
public final class PolicyConformanceTestRunner extends ParentRunner<PolicyConformanceTest> {

 private static final Splitter SPLITTER = Splitter.on(",").omitEmptyStrings();
 private static final String TESTS_YAML_FILE_NAME = "tests.yaml";
 private static final String TESTS_TEXTPROTO_FILE_NAME = "tests.textproto";
 private static final TypeRegistry TYPE_REGISTRY =
 TypeRegistry.newBuilder()
 .add(Struct.getDescriptor())
 .add(Value.getDescriptor())
 .add(ListValue.getDescriptor())
 .build();

 private static final String TEST_DIRS_PROP =
 System.getProperty("dev.cel.policy.conformance.tests");
 private static final String TESTDATA_DIR =
 System.getProperty("dev.cel.policy.conformance.testdata_dir", "testdata");
 private static final String SKIP_TESTS_PROP =
 System.getProperty("dev.cel.policy.conformance.skip_tests");

 private static final ImmutableList<String> TESTS_TO_SKIP =
 Strings.isNullOrEmpty(SKIP_TESTS_PROP)
 ? ImmutableList.of()
 : ImmutableList.copyOf(SPLITTER.splitToList(SKIP_TESTS_PROP));

 private static final ImmutableList<String> TEST_DIRS =
 Strings.isNullOrEmpty(TEST_DIRS_PROP)
 ? discoverTestDirs(TESTDATA_DIR)
 : ImmutableList.copyOf(SPLITTER.splitToList(TEST_DIRS_PROP));

 private static ImmutableList<String> discoverTestDirs(String testdataDir) {
 File dir = new File(testdataDir);
 if (!dir.exists() || !dir.isDirectory()) {
 return ImmutableList.of();
 }
 String[] directories = dir.list((current, name) -> new File(current, name).isDirectory());
 if (directories == null) {
 return ImmutableList.of();
 }
 Arrays.sort(directories);
 return ImmutableList.copyOf(directories);
 }

 private final ImmutableList<PolicyConformanceTest> tests;

 private ImmutableList<PolicyConformanceTest> loadTests() {
 if (TEST_DIRS.isEmpty()) {
 return ImmutableList.of();
 }

 ImmutableList.Builder<PolicyConformanceTest> testsBuilder = ImmutableList.builder();

 for (String dir : TEST_DIRS) {
 String fullDirPath = TESTDATA_DIR + "/" + dir;
 try {
 ImmutableList<CelTestSuiteContext> suites = readTestSuites(fullDirPath);
 for (CelTestSuiteContext namedSuite : suites) {
 for (CelTestSection section : namedSuite.testSuite().sections()) {
 for (CelTestCase testCase : section.tests()) {
 String baseName = String.format("%s/%s/%s", dir, section.name(), testCase.name());
 String displayName = baseName + namedSuite.formatSuffix();
 if (!shouldSkipTest(baseName, TESTS_TO_SKIP)) {
 testsBuilder.add(new PolicyConformanceTest(displayName, testCase, fullDirPath));
 }
 }
 }
 }
 } catch (Exception e) {
 throw new RuntimeException("Failed to load test suite in " + fullDirPath, e);
 }
 }
 return testsBuilder.build();
 }

 private static boolean shouldSkipTest(String name, List<String> testsToSkip) {
 for (String testToSkip : testsToSkip) {
 if (name.startsWith(testToSkip)) {
 String consumedName = name.substring(testToSkip.length());
 if (consumedName.isEmpty() || consumedName.startsWith("/")) {
 return true;
 }
 }
 }
 return false;
 }

 private static ImmutableList<CelTestSuiteContext> readTestSuites(String dirPath)
 throws Exception {
 File dir = new File(dirPath);
 File yamlFile = new File(dir, TESTS_YAML_FILE_NAME);
 File textprotoFile = new File(dir, TESTS_TEXTPROTO_FILE_NAME);

 boolean bothExist = yamlFile.exists() && textprotoFile.exists();
 ImmutableList.Builder<CelTestSuiteContext> suitesBuilder = ImmutableList.builder();

 if (yamlFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteYamlParser.newInstance()
 .parse(Files.asCharSource(yamlFile, UTF_8).read()),
 bothExist ? " (yaml)" : ""));
 }
 if (textprotoFile.exists()) {
 suitesBuilder.add(
 CelTestSuiteContext.create(
 CelTestSuiteTextProtoParser.newInstance()
 .parse(Files.asCharSource(textprotoFile, UTF_8).read(), TYPE_REGISTRY),
 bothExist ? " (textproto)" : ""));
 }

 ImmutableList<CelTestSuiteContext> suites = suitesBuilder.build();
 if (suites.isEmpty()) {
 throw new IllegalArgumentException(
 String.format(
 "No %s or %s found in %s", TESTS_YAML_FILE_NAME, TESTS_TEXTPROTO_FILE_NAME, dirPath));
 }
 return suites;
 }

 @Override
 protected ImmutableList<PolicyConformanceTest> getChildren() {
 return tests;
 }

 @Override
 protected Description describeChild(PolicyConformanceTest child) {
 return Description.createTestDescription(getTestClass().getJavaClass(), child.getName());
 }

 @Override
 protected void runChild(PolicyConformanceTest child, RunNotifier notifier) {
 runLeaf(child, describeChild(child), notifier);
 }

 public PolicyConformanceTestRunner(Class<?> clazz) throws InitializationError {
 super(clazz);
 this.tests = loadTests();
 }

 @AutoValue
 abstract static class CelTestSuiteContext {
 abstract CelTestSuite testSuite();

 abstract String formatSuffix();

 static CelTestSuiteContext create(CelTestSuite testSuite, String formatSuffix) {
 return new AutoValue_PolicyConformanceTestRunner_CelTestSuiteContext(testSuite, formatSuffix);
 }
 }
}

21 changes: 21 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/PolicyConformanceTests.java

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// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dev.cel.conformance.policy;

import org.junit.runner.RunWith;

/** Main test class for CEL policy conformance tests. */
@RunWith(PolicyConformanceTestRunner.class)
public class PolicyConformanceTests {}

50 changes: 50 additions & 0 deletions
conformance/src/test/java/dev/cel/conformance/policy/cel_policy_conformance_test.bzl

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# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Macro to run CEL policy conformance tests."""

load("@rules_java//java:defs.bzl", "java_test")

def cel_policy_conformance_test_java(
 name,
 testdata,
 test_cases = [],
 skip_tests = [],
 **kwargs):
 """Macro to run CEL policy conformance tests for Java.

 Args:
 name: The name of the test target.
 testdata: Testdata filegroup target.
 test_cases: (optional) List of test case names (directory names) to run.
 skip_tests: (optional) List of test case names (directory names) to skip.
 **kwargs: Other standard Bazel target attributes.
 """

 lbl = native.package_relative_label(testdata)
 testdata_dir = lbl.package + "/" + lbl.name

 java_test(
 name = name,
 jvm_flags = [
 "-Ddev.cel.policy.conformance.tests=" + ",".join(test_cases),
 "-Ddev.cel.policy.conformance.testdata_dir=" + testdata_dir,
 "-Ddev.cel.policy.conformance.skip_tests=" + ",".join(skip_tests),
 ],
 data = [testdata],
 size = "small",
 test_class = "dev.cel.conformance.policy.PolicyConformanceTests",
 runtime_deps = [Label(":run")],
 **kwargs
 )
Loading