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[VPEX][7/8] Add local-env acceptance tests - #5833
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Integration test reportCommit: 3bde07c
8 interesting tests: 4 RECOVERED, 4 SKIP
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databricks#5823) ## Why - The `local-env` feature needs a shared vocabulary before any behavior can be built: the result shape, the error taxonomy, and how a compute target maps to an environment key. - Landing these contract types first lets every later layer (resolve / fetch / merge / pipeline / command) depend on stable, reviewed definitions. - Kept deliberately minimal and dependency-free so it reviews on its own and stays `unused`/`deadcode`-clean with no consumers yet. ## What - **`result.go`** — the `--json` / `E_*` output contract: `Result`, `PipelineError`, `ErrorCode`, `PhaseName`, `PhaseStatus`, `Mode`, `TargetInfo`, `ResolvedInfo`, `Plan`, `Warning`; plus the command-path constants (`local-env` / `python` / `sync`) defined in one place. - **`envkey.go`** — `EnvKeyForServerless` / `EnvKeyForSparkVersion` / `NormalizeServerless`, and `PythonMinorFromRequires` (clause-aware: returns the effective highest lower bound of a `requires-python`). - No wiring into `cmd/`, so the CLI is unchanged. Filesystem/artifact constants and the phase-order slice deliberately live with their consumer (PR 5). ## Testing strategy - Unit tests for the error/type contract (`result_test.go`) and env-key mapping incl. multi-clause / strict-`>` / no-floor `requires-python` cases (`envkey_test.go`). - Gates: `go build`, `go test`, `golangci-lint`, `deadcode`, `gofmt` — all green. - Reviewed with codex across several rounds to convergence (all findings fixed or explicitly rejected as speculative). --- ## About this stack This is one of a series of small, stacked PRs that together add the `databricks local-env python sync` command — it provisions a local Python environment (Python version, `databricks-connect` pin, and dependency constraints) matched to a selected Databricks compute target. The work was split from one large branch into single-concern layers so each is independently reviewable; the command is kept hidden until the final PR so nothing is user-visible mid-stack. **Review bottom-up.** Each PR targets the previous one as its base branch, so its diff shows only that layer. | # | PR | What | |---|----|------| | 1 | **databricks#5823 ← you are here** | foundation: result types + env-key mapping | | 2 | databricks#5824 | compute-target resolution | | 3 | databricks#5826 | constraint fetch + offline cache | | 4 | databricks#5827 | formatting-preserving pyproject.toml merge | | 5 | databricks#5828 | six-phase pipeline + detection + package-manager interface | | 6 | databricks#5832 | uv backend + CLI command (registered hidden) | | 7 | databricks#5833 | acceptance tests | | 8 | databricks#5835 | unveil (unhide + help + changelog) | This pull request and its description were written by Isaac.
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## Why - `local-env` must turn the user's compute selection into a single environment key before it can fetch anything, and the selection can come from several places with a defined precedence. - Isolating resolution behind a narrow seam keeps it testable without a live workspace and keeps SDK details out of the engine. ## What - **`target.go`** — `ResolveTarget` with ordered precedence `--cluster` → `--serverless` → `--job` → bundle target, producing a `TargetInfo` + env key. - Compute lookups go through the narrow `ComputeClient` interface (stubbable in tests). - `ValidateTargetFlags` rejects more than one target flag; `ResolveTarget` runs it up front so a non-Cobra caller can't silently resolve the wrong target. - Classic-compute jobs read the Spark version from the documented first return of `GetJobSparkVersion` (not the recorded-version third return). ## Testing strategy - Unit tests against a stub `ComputeClient` covering each precedence branch, the mutually-exclusive-flags error, and the job classic-compute contract (`target_test.go`). - Gates: `go build`, `go test`, `golangci-lint`, `deadcode`, `gofmt` — all green. - Reviewed with codex to a clean pass. --- ## About this stack This is one of a series of small, stacked PRs that together add the `databricks local-env python sync` command — it provisions a local Python environment (Python version, `databricks-connect` pin, and dependency constraints) matched to a selected Databricks compute target. The work was split from one large branch into single-concern layers so each is independently reviewable; the command is kept hidden until the final PR so nothing is user-visible mid-stack. **Review bottom-up.** Each PR targets the previous one as its base branch, so its diff shows only that layer. | # | PR | What | |---|----|------| | 1 | databricks#5823 | foundation: result types + env-key mapping | | 2 | **databricks#5824 ← you are here** | compute-target resolution | | 3 | databricks#5826 | constraint fetch + offline cache | | 4 | databricks#5827 | formatting-preserving pyproject.toml merge | | 5 | databricks#5828 | six-phase pipeline + detection + package-manager interface | | 6 | databricks#5832 | uv backend + CLI command (registered hidden) | | 7 | databricks#5833 | acceptance tests | | 8 | databricks#5835 | unveil (unhide + help + changelog) | This pull request and its description were written by Isaac.
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…icks#5826) ## Why - Once a target resolves to an env key, `local-env` needs the pinned Python version, `databricks-connect` version, and dependency constraints published for that key. - The fetch must degrade gracefully offline and distinguish “this environment isn't published” from “the network is down,” because those call for different user action. - The artifact host must be a Databricks-owned, access-controlled location and must never default to a personal repo — whoever controls the host controls what the CLI installs. ## What - **`constraints.go`** — fetches the per-environment `pyproject.toml`, parses `requires-python`, the `databricks-connect` pin, and `[tool.uv]` `constraint-dependencies`, and caches it on disk. - **Host parameterization** — no host is hardcoded: `RepoConstraintBaseURL` reads the repo (`owner/name`) from the temporary `DATABRICKS_LOCALENV_CONSTRAINT_REPO` env var and builds a `raw.githubusercontent.com/<repo>/main` URL; the built-in default is empty. When unset it returns `""` and `FetchConstraints` reports the missing source as a fetch-phase `E_FETCH` error (so there is no untrusted default, and the failure flows through the normal phase/JSON reporting). Once `databricks/environments` can publish, that becomes the hardcoded default and the env var is no longer required. - Failure classification: **404** → `E_ENV_UNSUPPORTED` (no cache fallback — a distinct non-transient condition); **transport / non-404** → `E_FETCH` with fallback to the last-good cached copy. - Robustness: validate the body (parse + require `requires-python`) **before** caching so a bad 2xx can't poison the cache; atomic cache write (mkdir + temp-file + rename); dedicated `http.Client` with a 30s timeout; body read bounded by `io.LimitReader` at 1 MiB; `databricks-connect` matched by leading package name under PEP 503 normalization (so `Databricks_Connect` matches, `databricks-connectors` does not); cache filename = readable slug + sha256 suffix to prevent collisions. ## Testing strategy - Unit tests with an `httptest` server: 200-parse, 404 → `E_ENV_UNSUPPORTED`, transport failure + cache fallback, missing-`requires-python` rejection, PEP 503 name matching, cache-dir creation, collision-free filenames, oversized-body rejection (`constraints_test.go`). - Host resolution: `TestRepoConstraintBaseURL` (env var → URL, unset → `""`, whitespace treated as unset) and `TestFetchConstraintsNoSourceConfigured` (empty host → `E_FETCH` naming the env var). - Gates: `go build`, `go test`, `golangci-lint`, `deadcode`, `gofmt` — all green. - Reviewed with codex to a clean pass (several fetch/cache edge-case fixes landed from review). --- ## About this stack This is one of a series of small, stacked PRs that together add the `databricks local-env python sync` command — it provisions a local Python environment (Python version, `databricks-connect` pin, and dependency constraints) matched to a selected Databricks compute target. The work was split from one large branch into single-concern layers so each is independently reviewable; the command is kept hidden until the final PR so nothing is user-visible mid-stack. **Review bottom-up.** Each PR targets the previous one as its base branch, so its diff shows only that layer. | # | PR | What | |---|----|------| | 1 | databricks#5823 | foundation: result types + env-key mapping | | 2 | databricks#5824 | compute-target resolution | | 3 | **databricks#5826 ← you are here** | constraint fetch + offline cache | | 4 | databricks#5827 | formatting-preserving pyproject.toml merge | | 5 | databricks#5828 | six-phase pipeline + detection + package-manager interface | | 6 | databricks#5832 | uv backend + CLI command (registered hidden) | | 7 | databricks#5833 | acceptance tests | | 8 | databricks#5835 | unveil (unhide + help + changelog) | This pull request and its description were written by Isaac.
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…atabricks#5827) ## Why - `local-env` must apply the resolved Python version and constraints to the user's `pyproject.toml` without disturbing their own content — comments, ordering, formatting, and unrelated config must survive untouched. - Re-running must be safe and idempotent, and a greenfield project needs a sensible file created from scratch. - This is the most intricate logic in the feature, so it lands in its own PR for focused review. ## What - **`merge.go`** — a formatting-preserving merge that rewrites only the env-owned regions (`requires-python`, the `databricks-connect` entry in `[dependency-groups].dev`, and a marker-bracketed managed `[tool.uv]` block) and preserves every other byte incl. CRLF; idempotent. `RenderFreshPyproject` builds a complete managed file for a greenfield project. - Scoping/robustness: managed `constraint-dependencies` nests header-less inside an existing user `[tool.uv]` (never a duplicate header); single- vs multi-line array detection tracks real bracket depth outside strings/comments; the `databricks-connect` rewrite is confined to `dev` and leaves trailing comments alone; `requires-python`'s inline comment is preserved; table-header parsing tolerates inline comments and recognizes `[[array.of.tables]]`. ## Testing strategy - Unit tests that parse the merged output as TOML (not just substring checks), covering idempotency, CRLF preservation, user-key preservation, the duplicate-`[tool.uv]` case, bracket-in-element arrays, sibling-group/comment non-clobbering, and `[[tool.uv.index]]` children (`merge_test.go`). - Gates: `go build`, `go test`, `golangci-lint`, `deadcode`, `gofmt` — all green. - Reviewed with codex to a clean pass (multiple TOML-corruption edge cases were caught and fixed). --- ## About this stack This is one of a series of small, stacked PRs that together add the `databricks local-env python sync` command — it provisions a local Python environment (Python version, `databricks-connect` pin, and dependency constraints) matched to a selected Databricks compute target. The work was split from one large branch into single-concern layers so each is independently reviewable; the command is kept hidden until the final PR so nothing is user-visible mid-stack. **Review bottom-up.** Each PR targets the previous one as its base branch, so its diff shows only that layer. | # | PR | What | |---|----|------| | 1 | databricks#5823 | foundation: result types + env-key mapping | | 2 | databricks#5824 | compute-target resolution | | 3 | databricks#5826 | constraint fetch + offline cache | | 4 | **databricks#5827 ← you are here** | formatting-preserving pyproject.toml merge | | 5 | databricks#5828 | six-phase pipeline + detection + package-manager interface | | 6 | databricks#5832 | uv backend + CLI command (registered hidden) | | 7 | databricks#5833 | acceptance tests | | 8 | databricks#5835 | unveil (unhide + help + changelog) | This pull request and its description were written by Isaac.
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Approving. Clean, idiomatic acceptance coverage — I ran the suite locally and all 12 scenarios pass, including on a synthetic "these tests + #5936's source" branch, so the goldens are robust to merge order. The stubbed endpoints match what the SDK calls, and the error goldens are consistent.
One thing I checked and want to flag as a non-issue for the record: no-target and json-error omit --check, so they hit the real preflight EnsureAvailable. That's fine — the suite already makes uv a hard prerequisite via RequireUV (acceptance_test.go), and discoverUv uses the same PATH lookup, so confirmUvInstall (added in #5936) is never reached in tests and no golden breaks when #5936 lands on top. Verified by running the combined branch.
The main gap is coverage of #5936's new serverless-from-job version path (deriving serverless-vN from environment_version, and the differing-version rejection) — none of the job scenarios here exercise it. I've left the detailed suggestion on #5936; if it's easier to add the scenario in this PR since the fixtures live here, that works too. Not blocking either way.
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…pt, tests Follow-ups from the #5936 review (all non-blocking): - environmentVersion now falls back to the deprecated Spec.Client field when Spec.EnvironmentVersion is empty. client is the predecessor of environment_version and some jobs still pin via it; reading both means the v4 fallback and the differing-version guard observe whichever field carries the pin, instead of treating a client-pinned job as unversioned (which would silently resolve to v4 and let two differing client values slip past the guard). base_environment stays ignored — it is a path/ID, not a version. The divergence error message is now field-agnostic ("differing versions"). - confirmUvInstall's prompt now names the OS-specific installer URL via a shared uvInstallerURL helper (install.ps1 on Windows, install.sh elsewhere), which installUv also uses, so the prompt is transparent about what actually runs. - Tests: environmentVersion field precedence (compute_test.go) and serverless --job version resolution + v4 fallback (target_test.go). The end-to-end differing-versions rejection through GetJobSparkVersion is best exercised as an acceptance scenario alongside the job fixtures in #5833; noted on the PR. Co-authored-by: Isaac
Seventh in the stacked series. End-to-end acceptance coverage for "databricks local-env python sync" against the in-process fake server, which is where the command's user-visible behavior (text + --json output, every error path) is exercised — cmd/localenv itself carries no unit tests by design. Nine scenarios: help (three-level tree), no-target, flag-conflict, manager-unsupported (conda project), env-unsupported (404 -> E_ENV_UNSUPPORTED), json-error, serverless-check (dry-run plan), serverless-json (--json plan), and constraints-only. Scripts drive the hidden command by name; goldens were generated with -update and verified stable on a clean re-run. The --json "command" field and the managed pyproject marker both render as "local-env python sync". No source changes. Co-authored-by: Isaac
Covers the job target paths that had no acceptance coverage: - job-classic-check: a single-cluster classic job resolves to its DBR-derived environment key (happy path). - job-ambiguous-compute: a job with both serverless environments and job clusters is rejected with an actionable disambiguation error. - job-multicluster-mismatch: a job whose clusters declare differing spark_version is rejected rather than silently using the first. Co-authored-by: Isaac
Rebasing onto main picked up the text-mode error dedup that landed with the uv backend: output.go now returns root.ErrAlreadyPrinted instead of the pipeline error, so the phase-loop message is no longer repeated as a trailing "Error: ..." line. Regenerate the six error-path goldens that predated that change; flag-conflict is unaffected because its error comes from Cobra flag validation, not the pipeline. Co-authored-by: Isaac
Covers the serverless-from-job path added in #5936, per the review suggestion on #5833 (the fixtures live here): - job-serverless-check: a serverless job that pins environment_version resolves to that serverless-vN (v3), not the v4 default. - job-serverless-version-mismatch: a job whose serverless environments declare differing versions is rejected with a disambiguation error. Co-authored-by: Isaac
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Thanks for the review, @anton-107. Addressed your coverage suggestion: now that #5936 has merged to main, its serverless-from-job version path is exercised here (the fixtures live in this PR, as you noted). Added two scenarios:
Also rebased the branch onto fresh main (linear history, includes #5936). The two |
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…ks#5832) ## Why - The engine needs a real `PackageManager` implementation (uv) and a CLI entry point so a user can actually run the feature. - Wiring it in while keeping it `Hidden` lets the command be dogfooded and exercised by acceptance tests without becoming user-visible until the stack is complete. - This is the first layer reachable from `main`, so it also makes the whole `libs/localenv` package live for the `deadcode` checker. ## What - **`libs/localenv/uv.go`** — the uv implementation of `PackageManager`: discover/install uv, install the Python minor, `uv sync`, seed pip into the venv, validate; plus the `pip.conf` → `UV_INDEX_URL` bridge for Databricks-managed machines. - **`cmd/localenv/`** — the command tree matching `local-env python sync`: a `local-env` group (`Hidden: true`), a `python` subgroup, and the `sync` verb. Parent nodes use `root.ReportUnknownSubcommand`; `sync` uses `cobra.NoArgs`, resolves flags/bundle target, builds the `Pipeline` with the uv manager, and renders text or `--json`. All Cobra `Use` values + the `--json` command field come from the `libs/localenv` constants. - **`cmd/cmd.go`** — registers the group. ## Testing strategy - Unit tests for uv helper logic (discovery, `pip.conf` index-url, arg builders, stderr surfacing) (`uv_test.go`). - Runtime smoke test of the hidden 3-level command: absent from top-level help; help works at each level; unknown subcommand exits non-zero; bare group shows help; flags + mutual-exclusion + `NoArgs` behave. - Gates: `go build ./...`, `go test`, `golangci-lint`, `deadcode` (whole tree, no pragmas), `gofmt` — all green. - `cmd/localenv/` unit tests are intentionally deferred to the acceptance PR (databricks#5833), per the repo convention that user-visible CLI output is covered by acceptance tests. --- ## About this stack This is one of a series of small, stacked PRs that together add the `databricks local-env python sync` command — it provisions a local Python environment (Python version, `databricks-connect` pin, and dependency constraints) matched to a selected Databricks compute target. The work was split from one large branch into single-concern layers so each is independently reviewable; the command is kept hidden until the final PR so nothing is user-visible mid-stack. **Review bottom-up.** Each PR targets the previous one as its base branch (this PR targets `main`), so its diff shows only that layer. Layers 1–5 have merged; the original layer-5 PR (databricks#5828) was split into 5a/5b/5c during review. | # | PR | What | Status | |---|----|------|--------| | 1 | databricks#5823 | foundation: result types + env-key mapping | merged | | 2 | databricks#5824 | compute-target resolution | merged | | 3 | databricks#5826 | constraint fetch + offline cache | merged | | 4 | databricks#5827 | formatting-preserving pyproject.toml merge | merged | | 5a | databricks#5850 | package-manager interface + detection | merged | | 5b | databricks#5851 | six-phase pipeline orchestrator | merged | | 5c | databricks#5854 | --check cache purity, greenfield name, dbc insertion | merged | | 6 | **databricks#5832 ← you are here** | uv backend + CLI command (registered hidden) | | | 7 | databricks#5833 | acceptance tests | | | 8 | databricks#5835 | unveil (unhide + help + changelog) | | This pull request and its description were written by Isaac.
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Why
--jsonoutput, and every error path — needs end-to-end coverage against the real CLI.cmd/localenv/carries no unit tests by design, so acceptance tests are where that surface is verified (repo convention: user-visible CLI output is covered by acceptance tests).What
acceptance/localenv/— 9 scenarios driven through the (hidden) command against the in-process fake server:help(three-level tree),no-target(E_NO_TARGET),flag-conflict(Cobra mutual-exclusion),manager-unsupported(conda project → clean P1 exit),env-unsupported(404 →E_ENV_UNSUPPORTEDat fetch),json-error(--output jsonerror object),serverless-check(dry-run plan),serverless-json(--jsonplan), andconstraints-only.local-env python syncand theDATABRICKS_LOCALENV_CONSTRAINT_SOURCEoverride; goldens show thelocal-env python synccommand field and managed marker. No source changes.Testing strategy
-updateand verified stable on a clean re-run (no-update); all 9 subtests pass.musterrguards the five expected-failure scenarios;traceshows the three output-producing ones.acceptance/localenv/.About this stack
This is one of a series of small, stacked PRs that together add the
databricks local-env python synccommand — it provisions a local Python environment (Python version,databricks-connectpin, and dependency constraints) matched to a selected Databricks compute target. The work was split from one large branch into single-concern layers so each is independently reviewable; the command is kept hidden until the final PR so nothing is user-visible mid-stack.Review bottom-up. Layers 1–5 have merged (the original layer-5 PR #5828 was split into 5a/5b/5c during review).
This pull request and its description were written by Isaac.