fix(prisma): isolate model tests from tracked database

[kattsushi]

Closes #241

Type

• Bug fix
• New feature
• Documentation only
• Code refactoring
• Maintenance/tooling
• Breaking change

Summary

• Copy tracked Prisma dev.db into an OS temporary directory before either test client opens it.
• Point the direct and Effect Prisma clients at the same temporary database.
• Guarantee cleanup across normal teardown, test failure, setup failure, and immediate process exit while preserving error propagation.

Root cause

PREPARE run 33192329040 correctly rejected packages/prisma/prisma/dev.db as an extra changed path. The preceding Prisma model suite passed but modified the tracked SQLite fixture through two writable clients.

Changes

File	Change
packages/prisma/test/utils.ts	Create/copy/clean the isolated DB and construct the direct client against it.
packages/prisma/test/prisma-model.test.ts	Share the temporary path and assert tracked-byte identity plus cleanup.

Test plan

• RED: uncached suite passed 34 tests but changed tracked DB hash.
• Two uncached isolated model-suite runs passed 18/18 with identical tracked hash.
• Forced 1ms timeout propagated failure and removed the temporary directory.
• Immediate child-process exit 23 removed the temporary directory.
• Prisma typecheck, build, lint, and format checks passed.
• git diff --exit-code -- packages/prisma/prisma/dev.db passed after every run.
• Generated validation outputs were removed; tracked generated files remained identical.

Contributor checklist

• Linked approved issue fix(prisma): isolate model tests from tracked database #241.
• Added exactly one type:* label: type:bug.
• Exactly two test files and 161 additions plus deletions.
• Conventional commit with no Co-Authored-By trailer.
• No workflow dispatch, release ref/tag, GitHub Release, or npm publication occurred while preparing this PR.

Summary by CodeRabbit

• Tests
  • Improved Prisma test isolation by running each test suite against a temporary database copy.
  • Added teardown validation to confirm temporary files are cleaned up and tracked database snapshots remain unchanged.
  • Added cleanup handling when test database setup fails or the test process exits.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 53d7461d-6cf3-4977-9a91-bc882b739574

📥 Commits

Reviewing files that changed from the base of the PR and between 190fb99 and 5ba1ae3.

📒 Files selected for processing (2)

• packages/prisma/test/prisma-model.test.ts
• packages/prisma/test/utils.ts

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The Prisma test utilities now copy the tracked database into a temporary directory. The model suite uses that copy, disconnects Prisma during teardown, removes the directory, and verifies that the tracked fixture remains unchanged.

Changes

Prisma test isolation

Layer / File(s)	Summary
Temporary database setup packages/prisma/test/utils.ts, packages/prisma/test/prisma-model.test.ts	The tests create a temporary database copy, configure Prisma with that path, and clean up failed setup.
Model suite teardown and validation packages/prisma/test/prisma-model.test.ts	The suite retains model assertions, adds teardown cleanup, and verifies temporary-path isolation and tracked database preservation.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to 5ba1a

The PR isolates Prisma model tests in a temporary database and preserves the tracked fixture without changing production behavior. No actionable merge-blocking risk remains beyond normal checks and review.

Poem

A rabbit copies the database bright
Into a burrow safe from write
The tracked file rests untouched
Prisma disconnects as it must
Temp files vanish from sight
Tests close neatly for the night

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the primary change: isolating Prisma model tests from the tracked database.
Linked Issues check	✅ Passed	The changes satisfy issue #241. They copy the tracked fixture to a temporary directory, use the isolated database for testing, preserve the tracked fixture, disconnect clients before cleanup, and limi…
Out of Scope Changes check	✅ Passed	The changes are limited to packages/prisma/test/utils.ts and packages/prisma/test/prisma-model.test.ts. They directly support the linked issue and include no release, manifest, lockfile, generated-cli…
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 2…

Full details: Linked Issues check

Explanation

The changes satisfy issue #241. They copy the tracked fixture to a temporary directory, use the isolated database for testing, preserve the tracked fixture, disconnect clients before cleanup, and limit changes to the approved test files.

Full details: Out of Scope Changes check

Explanation

The changes are limited to packages/prisma/test/utils.ts and packages/prisma/test/prisma-model.test.ts. They directly support the linked issue and include no release, manifest, lockfile, generated-client, migration, or publication changes.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 2 files.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/prisma-test-db-isolation

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