Complete or maximize unit test coverage for a specific TypeScript file in this repo. Use when: a test run is short of the 100% coverage threshold and you need to find and close the gap, or when deciding whether an uncovered branch is genuinely unreachable. For everyday test-writing conventions (AAA, mocking, placement, type safety), see .agents/rules/unit-testing.md instead — it loads automatically for any *.spec.ts file.
Steady37 mentions in 2 weeks
20 projects use a version of this
1k13d agoReviewMountCreate a free account to mount
TypeScript testing advisor. Always use this skill when writing tests in TypeScript, setting up Jest or Vitest with TypeScript, creating type-safe mocks, or writing type-level tests. Use when the user asks "how do I mock this in TypeScript", "my mock has the wrong type", "how do I test that a type is correct", "jest.fn doesn't match my interface", "how do I set up Jest with TypeScript", "how do I avoid as any in tests", or "how do I write a type-level test". Read this skill before writing any TypeScript tests or mocks.
Defines the TypeScript testing standard for AI coding and review. Use when adding, changing, or reviewing tests, test structure, Vitest, Playwright e2e, validation/error/PATCH/auth/security/tenant tests, fixtures, mocks/fakes, coverage, CI test commands, or any behavior that needs test protection.
How to test and debug Feast — running targeted tests, writing unit tests for new components, debugging registry and online store issues, and inspecting live feature store state. Use when writing tests for a new feature, debugging a failing test, investigating a runtime error, or verifying that a change works correctly end-to-end.
Steady8 mentions in 2 weeks
No other project uses it yet
7.4k4mo agoReviewMountCreate a free account to mount
Use when writing tests, running validation scripts, or (in TDD mode) enforcing red-green-refactor cycle. Activates during Phase 2 (Test) and Phase 3 (Build). NOT for coverage gap mapping (see mk:nyquist); NOT for sprint contract negotiation (see mk:sprint-contract).
144mo agoReviewMountCreate a free account to mount
Use when you need to write unit tests for Spring Boot applications — including pure unit tests with @ExtendWith(MockitoExtension.class) for @Service/@Component, slice tests with @WebMvcTest and @MockitoBean for controllers, @JsonTest for JSON serialization, parameterized tests with @CsvSource/@MethodSource, test profiles, and @TestConfiguration. For framework-agnostic Java use @131-java-testing-unit-testing. For integration tests use @322-frameworks-spring-boot-testing-integration-tests. This should trigger for requests such as Review Java code for Spring Boot unit tests; Apply best practices for Spring Boot unit tests in Java code; Write Mockito-first unit tests for Spring Boot services; Avoid unnecessary @SpringBootTest in Spring unit tests; Review Spring Boot slice-free unit test design. Part of Plinth Toolkit
4614mo agoReviewMountCreate a free account to mount
Use when writing or changing tests in this repo, deciding what to test or where a test belongs, adding a regression test for a bug fix, reviewing the test portion of a PR, deciding which golden outputs to bless and reviewing the blessed diff, or adding a benchmark. Trigger phrases include "add a test", "write tests for", "is this covered", "does this need a test", "review the tests here", "which layer should this test go in". Also use for the mechanics of the golden framework itself — the //! > file format, creating test_file_test! runners, or how CAIRO_FIX_TESTS works (covered in references/golden-framework.md).
1.9k2mo agoReviewMountCreate a free account to mount
Write tests for an FSH feature — xUnit + Shouldly + NSubstitute + AutoFixture, with naming and AAA conventions. Use when adding unit/handler/validator/entity tests. Full rules in .agents/rules/testing.md + integration-testing.md.
6.9k9d agoReviewMountCreate a free account to mount
Review generated or changed test code against universal testing rules before it ships. Best used reactively after an agent writes, edits, generates, or refactors tests, before presenting, committing, or merging them. Use for pytest (test_*.py, *_test.py), PHPUnit/Pest (*Test.php), Jest/Vitest (*.test.ts, *.spec.js), Go (*_test.go), files under tests/, __tests__/, or spec/, and review requests like 'write tests for X', 'add tests', 'test this', 'review these tests', or PR diffs containing tests. Can also guide test writing when explicitly invoked before the work. This skill is the quality gate that prevents AI-generated test bloat. DO NOT USE for production or implementation code review (use clean-code-guard), CI or test-runner configuration, running or debugging tests, or general architecture discussion.
1.3k4mo agoReviewMountCreate a free account to mount
End-to-end testing patterns with Playwright. Use when writing browser automation tests, integration tests, testing user flows, or setting up E2E test suites.
Drive the running app on an Android emulator and visually verify UI/UX by capturing screenshots and reading them back. Use to confirm a screen renders, navigate a flow (e.g. first-run/quickstart), check dual-modality input, or catch visual regressions. Knows the technical limits of emulator testing and when the device is still the final authority.
7104mo agoReviewMountCreate a free account to mount
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.
Gates whether a new test should exist and forces it to be efficient, protecting CI from low-value test bloat. Use before any change to what a pytest, Jest, or Playwright test asserts or sets up, down to one fixture or one assertion added to an existing block. Front-loads the value bar (every test must catch a realistic regression no existing test already catches; extend the nearest existing test before writing a new standalone one; test behavior through the public interface, not implementation details; collapse near-duplicates into parameterized cases) and the efficiency bar (deterministic, isolated, fast; pick the cheapest test level; Django TestCase over TransactionTestCase; no sleeps, no real network; no time bombs from absolute dates left to age against the real clock; no database a test never uses). Includes a "don't write it" decision tree. For fixing an existing flaky test use `/fixing-flaky-tests`; after this gate says a Playwright test is warranted, use `/playwright-test` for mechanics.
40k23d agoReviewMountCreate a free account to mount
Run QUnit and OPA tests for OpenUI5 modules via headless Chrome. This is the ONLY way to run tests — never use karma, npm test, or browser MCP tools. Use whenever tests need execution: run tests, run unit tests, check tests pass, verify my change, do the tests still pass, run QUnit, run OPA, execute test suite, test this module, test Button/Router/Table/Dialog/MessageBox/Input/Control, run journey, check regressions. Even if the user does not say "test" explicitly but wants to verify a code change works, use this skill.
4 projects use a version of this
3.3k43d agoReviewMountCreate a free account to mount
Integration testing phase of F Prime component development. Guides the agent through writing reusable pytest-based integration tests in the component's test/int/ folder using the GDS Integration Test API. These tests ship with the component and can be run against any deployment that includes it. Trigger when unit tests pass and the component is ready for integration testing. Keywords: F Prime, integration test, pytest, GDS, fprime_test_api, reusable test, component test.
Steady3 mentions in 2 weeks
No other project uses it yet
12k21mo agoReviewMountCreate a free account to mount
A folder with a SKILL.md file: a name, a description of when to use it, and instructions. Claude loads a skill only when the task matches its description.
How do I use one I find here?
Copy the folder into your project's .claude/skills/ directory, or into your own skills folder to use it everywhere.
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javierbreaSkill
