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write-tests

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Mis à jour4 juillet 2026 à 14:45

Derives tests from acceptance criteria, writes a failing regression test before fixing a bug, runs the suite, and reports coverage of the specific behavior. Use when asked to "write tests", "add test coverage", "test this change", "write a regression test", or when implementing a feature or fixing a bug that ships without tests. Use before committing any behavior change.

Installation

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Source

luminik-io

luminik-io/alfred

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Métiers associésSOC

Basé sur la classification professionnelle SOC

Analystes en assurance qualité des logiciels et testeursProfessions informatiques et mathématiques·SOC 15-1253

SKILL.md

readonly

name	write-tests
description	Derives tests from acceptance criteria, writes a failing regression test before fixing a bug, runs the suite, and reports coverage of the specific behavior. Use when asked to "write tests", "add test coverage", "test this change", "write a regression test", or when implementing a feature or fixing a bug that ships without tests. Use before committing any behavior change.
license	MIT

Write tests

When to use

You implemented a feature and the acceptance criteria are not yet covered.
You are about to fix a bug (write the failing test FIRST).
A PR changes behavior but adds no test.
A reviewer asks "how do we know this works?".

This skill is about tests that verify the SPECIFIC behavior that changed, not about chasing a line-coverage number. A test that passes whether or not the code is correct is worse than no test.

Procedure

Restate the behavior under test in one sentence. If it came from a spec, quote the acceptance criterion. If it is a bug, state the wrong behavior and the correct behavior.
For a bug: write the regression test FIRST and run it. It must FAIL against the current code, reproducing the bug. A test that passes before the fix proves nothing. Only then write the fix and confirm the test flips to green.
For a feature: turn each acceptance criterion into at least one test. Cover the happy path, one boundary (empty, null, max), and one error path. Name each test after the behavior, e.g. test_widget_search_returns_empty_on_no_match.
Use the repo's existing test framework and fixtures. Read a neighboring test first and match its style; do not introduce a new runner or assertion library.
Run the full suite (for example npm test, pytest, or ./gradlew test depending on the repo), not just the new file, so you catch a regression the change caused elsewhere.
If a test is flaky or environment-dependent, fix the test's determinism (seed, clock, fixed input) rather than adding a retry or a sleep.

Output

The new or changed test files, each test named after the behavior it pins.
For a bug: a note confirming the regression test failed before the fix and passes after.
The suite result (pass count, any skips and why).
A short coverage statement in prose: which acceptance criterion or bug each test covers. Do not report a coverage percentage as if it were proof; report which behaviors are now pinned. Example: "GET /v1/widgets pagination is covered by 3 tests (page 1, last page, out-of-range page)."

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name	write-tests
description	Derives tests from acceptance criteria, writes a failing regression test before fixing a bug, runs the suite, and reports coverage of the specific behavior. Use when asked to "write tests", "add test coverage", "test this change", "write a regression test", or when implementing a feature or fixing a bug that ships without tests. Use before committing any behavior change.
license	MIT

Write tests

When to use

You implemented a feature and the acceptance criteria are not yet covered.
You are about to fix a bug (write the failing test FIRST).
A PR changes behavior but adds no test.
A reviewer asks "how do we know this works?".

This skill is about tests that verify the SPECIFIC behavior that changed, not about chasing a line-coverage number. A test that passes whether or not the code is correct is worse than no test.

Procedure

Restate the behavior under test in one sentence. If it came from a spec, quote the acceptance criterion. If it is a bug, state the wrong behavior and the correct behavior.
For a bug: write the regression test FIRST and run it. It must FAIL against the current code, reproducing the bug. A test that passes before the fix proves nothing. Only then write the fix and confirm the test flips to green.
For a feature: turn each acceptance criterion into at least one test. Cover the happy path, one boundary (empty, null, max), and one error path. Name each test after the behavior, e.g. test_widget_search_returns_empty_on_no_match.
Use the repo's existing test framework and fixtures. Read a neighboring test first and match its style; do not introduce a new runner or assertion library.
Run the full suite (for example npm test, pytest, or ./gradlew test depending on the repo), not just the new file, so you catch a regression the change caused elsewhere.
If a test is flaky or environment-dependent, fix the test's determinism (seed, clock, fixed input) rather than adding a retry or a sleep.

Output

The new or changed test files, each test named after the behavior it pins.
For a bug: a note confirming the regression test failed before the fix and passes after.
The suite result (pass count, any skips and why).
A short coverage statement in prose: which acceptance criterion or bug each test covers. Do not report a coverage percentage as if it were proof; report which behaviors are now pinned. Example: "GET /v1/widgets pagination is covered by 3 tests (page 1, last page, out-of-range page)."