Test writer

About

Writes the tests that would have caught the bug, in the style the project already uses.

Files in v1.0.0

• replicamd.plugin.json2077 B
• skills/tests-worth-keeping.md2023 B

Contributes

{
  "commands": [
    {
      "id": "cover",
      "title": "Test what the diff changed",
      "prompt": "Read the working diff and write the tests it should have come with.\n\nFirst read two or three existing test files and match them: the same runner, the same file location and naming, the same assertion style, the same setup helpers. A test that is right but foreign to the codebase gets rewritten by the next person, so this matters more than your preferences.\n\nThen write tests for what the change actually does - the branch that was added, the edge it now handles, the error path. Cover the boundary: empty, one, many, the value either side of a comparison. Skip tests that only assert the implementation back at itself; a test that breaks on every refactor and never on a bug is a liability.\n\nRun them. Show me the output. If a test passes against the old code too, it is not testing the change - say so and fix it."
    },
    {
      "id": "regression",
      "title": "Write the test for a bug",
      "prompt": "Describe the bug to me, or point me at the fix, and I will write the regression test.\n\nThe test must fail against the broken code. Write it first, run it against the current state, and show me it failing for the right reason - a test that passes before the fix proves nothing, and that is the single most common way a regression test is worthless.\n\nName it after the behaviour, not the ticket: `returns the last write when two land in the same tick` beats `test issue 412`. Include the specific input that triggered it, so the next reader sees the shape of the failure without going to find the report."
    }
  ],
  "skills": [
    "skills/tests-worth-keeping.md"
  ]
}

Versions

• v1.0.07/26/2026 · 2 files

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