[camera_avfoundation] Migrate tests to Swift - part 2

packages/camera/camera_avfoundation/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.9.18+8
+
+* Migrates unit tests to Swift.
+
 ## 0.9.18+7
 
 * Fixes crash when setting `activeFormat` on `FLTCaptureDevice`.

packages/camera/camera_avfoundation/example/ios/RunnerTests/CameraCaptureSessionQueueRaceConditionTests.swift

@@ -0,0 +1,54 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import XCTest
+
+@testable import camera_avfoundation
+
+final class CameraCaptureSessionQueueRaceConditionTests: XCTestCase {
+ private func createCameraPlugin() -> CameraPlugin {
+ return CameraPlugin(
+ registry: MockFlutterTextureRegistry(),
+ messenger: MockFlutterBinaryMessenger(),
+ globalAPI: MockGlobalEventApi(),
+ deviceDiscoverer: MockCameraDeviceDiscoverer(),
+ deviceFactory: { _ in MockCaptureDevice() },
+ captureSessionFactory: { MockCaptureSession() },
+ captureDeviceInputFactory: MockCaptureDeviceInputFactory()
+ )
+ }
+
+ func testFixForCaptureSessionQueueNullPointerCrashDueToRaceCondition() {
+ let cameraPlugin = createCameraPlugin()
+ let disposeExpectation = expectation(description: "dispose's result block must be called")
+ let createExpectation = expectation(description: "create's result block must be called")
+
+ // Mimic a dispose call followed by a create call, which can be triggered by slightly dragging the
+ // home bar, causing the app to be inactive, and immediately regain active.
+ cameraPlugin.disposeCamera(0) { error in
+ disposeExpectation.fulfill()
+ }
+
+ cameraPlugin.createCameraOnSessionQueue(
+ withName: "acamera",
+ settings: FCPPlatformMediaSettings.make(
+ with: .medium,
+ framesPerSecond: nil,
+ videoBitrate: nil,
+ audioBitrate: nil,
+ enableAudio: true
+ )
+ ) { result, error in
+ createExpectation.fulfill()
+ }
+
+ waitForExpectations(timeout: 30, handler: nil)
+
+ // `captureSessionQueue` must not be nil after `create` call. Otherwise a nil
+ // `captureSessionQueue` passed into `AVCaptureVideoDataOutput::setSampleBufferDelegate:queue:`
+ // API will cause a crash.
+ XCTAssertNotNil(
+ cameraPlugin.captureSessionQueue, "captureSessionQueue must not be nil after create method.")
+ }
+}

packages/camera/camera_avfoundation/example/ios/RunnerTests/CameraMethodChannelTests.swift

@@ -0,0 +1,78 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import AVFoundation
+import XCTest
+
+@testable import camera_avfoundation
+
+final class CameraMethodChannelTests: XCTestCase {
+ private func createCameraPlugin(with session: MockCaptureSession) -> CameraPlugin {
+ return CameraPlugin(
+ registry: MockFlutterTextureRegistry(),
+ messenger: MockFlutterBinaryMessenger(),
+ globalAPI: MockGlobalEventApi(),
+ deviceDiscoverer: MockCameraDeviceDiscoverer(),
+ deviceFactory: { _ in MockCaptureDevice() },
+ captureSessionFactory: { session },
+ captureDeviceInputFactory: MockCaptureDeviceInputFactory()
+ )
+ }
+
+ func testCreate_ShouldCallResultOnMainThread() {
+ let avCaptureSessionMock = MockCaptureSession()
+ avCaptureSessionMock.canSetSessionPreset = true
+ let camera = createCameraPlugin(with: avCaptureSessionMock)
+ let expectation = self.expectation(description: "Result finished")
+
+ var resultValue: NSNumber?
+ camera.createCameraOnSessionQueue(
+ withName: "acamera",
+ settings: FCPPlatformMediaSettings.make(
+ with: FCPPlatformResolutionPreset.medium,
+ framesPerSecond: nil,
+ videoBitrate: nil,
+ audioBitrate: nil,
+ enableAudio: true
+ )
+ ) { result, error in
+ resultValue = result
+ expectation.fulfill()
+ }
+
+ waitForExpectations(timeout: 30, handler: nil)
+ XCTAssertNotNil(resultValue)
+ }
+
+ func testDisposeShouldDeallocCamera() {
+ let avCaptureSessionMock = MockCaptureSession()
+ avCaptureSessionMock.canSetSessionPreset = true
+ let camera = createCameraPlugin(with: avCaptureSessionMock)
+ let createExpectation = self.expectation(description: "create's result block must be called")
+
+ camera.createCameraOnSessionQueue(
+ withName: "acamera",
+ settings: FCPPlatformMediaSettings.make(
+ with: .medium,
+ framesPerSecond: nil,
+ videoBitrate: nil,
+ audioBitrate: nil,
+ enableAudio: true
+ )
+ ) { result, error in
+ createExpectation.fulfill()
+ }
+
+ waitForExpectations(timeout: 30, handler: nil)
+ XCTAssertNotNil(camera.camera)
+
+ let disposeExpectation = self.expectation(description: "dispose's result block must be called")
+ camera.disposeCamera(0) { error in
+ disposeExpectation.fulfill()
+ }
+
+ waitForExpectations(timeout: 30, handler: nil)
+ XCTAssertNil(camera.camera, "camera should be deallocated after dispose")
+ }
+}