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create-unit-test

@AnySoftKeyboard/janus
15
0

Create and run unit tests following the project's architecture and guidelines (Robolectric, naming, location).

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SKILL.md

name create-unit-test
description Create and run unit tests following the project's architecture and guidelines (Robolectric, naming, location).

Create Unit Test

This skill guides the creation of unit tests to ensuring consistency and correctness.

Workflow

  1. Analyze and Plan:

    • Goal: Understand what needs testing.
    • Action: Examine the source code.
    • Action: Identify "happy path" cases (core functionality).
    • Action: Identify "error cases" and "edge cases" based on likelihood.
    • Action: Do not suggest implementation details unless asked; focus on behavior.

  2. Setup Test File:

    • Naming: [OriginalClassName]Test.kt.
    • Location: [module]/src/test/java/[package/path]/.
    • Runner: If testing Android components, you MUST use Robolectric.
    • Mocking: Prefer creating Fakes over Mocks or patches. Use Mocks only if Fakes are too complex.

  3. Implement Tests:

    • Write clear, descriptive test methods.
    • Follow the "Arrange-Act-Assert" pattern.
    • Ensure all resources (strings, themes) are properly mocked or provided via Robolectric.

  4. Run Tests:

    • Command: ./gradlew :[module]:testDebugUnitTest
    • Example: ./gradlew :database:testDebugUnitTest
    • Tip: Before any commit, run ./gradlew testDebugUnitTest to ensure everything passes.

  5. Handle Failures:

    • Goal: Diagnose and fix issues.
    • Action: If a test fails, locate the full error report.
    • Path: [module]/build/test-results/testDebugUnitTest/TEST-[package.name.TestClassName].xml.
    • Example: app/build/test-results/testDebugUnitTest/TEST-com.anysoftkeyboard.janus.app.MainActivityTest.xml.

Guidelines

  • Consistency: Always place tests in the test source set, not androidTest (unless specifically writing instrumentation tests, which is rare for this skill).
  • Reliability: Avoid flaky tests. Ensure deterministic behavior.