113 skills · sorted by relevance
Write JavaScript and TypeScript tests with Jest using consistent structure, dependency mocking, and checks for asynchronous code. Includes guidance for snapshots and React components, focusing on user interactions, accessibility, and choosing appropriate assertions for expected results.
Jest best practices, patterns, and API guidance for JavaScript/TypeScript testing. Covers mock design, async testing, matchers, timer mocks, snapshots, module mocking, configuration, and CI optimization. Baseline: jest ^30.5.2. Triggers on: jest imports, describe, it, test, expect, jest.fn, jest.mock, jest.spyOn, mentions of "jest", "unit test", "test suite", or "mock".
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Write and update Handsontable unit tests with Jest and type tests with TypeScript. Explains file placement, focused test runs, boundary cases, and checks for public types, while helping choose between isolated logic tests and browser tests.
Write Jest unit tests for component behavior and user interactions. Includes reusable test data builders, mock replacements for dependencies, and test-driven development, where a failing test guides implementation before the code is cleaned up.
Write JavaScript and TypeScript tests with Jest, Vitest, and Testing Library. Covers functions, UI components, and APIs, including mock replacements for external services, reusable test data, and setup for automated testing.
Creates test starters for React and Next.js applications and analyzes coverage reports to find untested code. Supports unit, integration, and browser-based tests, simulated API responses, reusable test data, and test runner configuration.
Write or repair React tests around user actions and visible results. Cover components and hooks, simulate network responses, check accessibility, and decide when real browser component tests or end-to-end tests across pages are needed.
Review how tests use mocks, substitutes for external services or resources. Identify excessive mocking and missing cleanup, suggest more realistic tests, and check whether automated checks consistently catch problems and prevent regressions.
Review and add automated accessibility checks for components, pages, and continuous integration workflows. Use axe-based tools to detect structural and attribute issues, while identifying checks that still need keyboard or screen reader testing.
Create unit test scaffolds, sample data, and mocks from code or specifications. Analyze coverage reports to prioritize missing tests, and guide test-driven development through failing tests, minimal implementation, and refactoring.
Develop and modify the Handsontable Angular wrapper with guidance on component lifecycle, settings updates, and NgZone, which controls change detection. It also covers standalone examples, global configuration, and the build and test workflow.
Run repository tests using commands suited to Python, Node, or Rust projects. Detect the project setup from its files, run the full suite or a selected target, and show passing results or failure details.
Write and configure unit tests, which check individual pieces of code, using Vitest. Replace dependencies with test substitutes, measure code coverage, compare saved outputs, and organize filtered or parallel test runs.
Add, repair, and strengthen tests for existing code using the project's testing framework. Covers regression cases, boundary conditions, flaky tests, and coverage gaps, with validation that links requested behaviors to specific tests.
Provide language-specific reference files for test analysis skills. The catalog helps agents recognize test methods, assertions, skipped tests, waiting patterns, setup and cleanup hooks, external dependencies, and tagging capabilities across different frameworks.
Review existing tests to see whether their assertions, the checks that verify expected behavior, are meaningful and varied. Get metrics, examples of weak checks, and specific recommendations for improving verification.
Testing React Native: Jest with jest-expo / react-native preset, React Testing Library Native, native module mocking, hook testing. Optional sections for Detox (native automation) and Maestro (declarative YAML e2e). Use this skill to: - Configure Jest preset based on workflow. - Write component tests with @testing-library/react-native. - Mock native modules (react-native-reanimated, expo-*, react-native-mmkv). - Test custom hooks via renderHook. - Set up Detox or Maestro for e2e (optional, requires native toolchain). Do NOT use this skill for: - General RN conventions (see rn-conventions). - Web-React testing (see react-plugin:react-testing — different jsdom setup). - Plain Node testing patterns (see nodejs-plugin equivalents).
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Testing Angular 18-21: TestBed, component harnesses (@angular/cdk/testing), Karma+Jasmine (default historical) vs Jest (jest-preset-angular, modern), Angular Testing Library (RTL-style). HttpClient mocking via HttpTestingController. NgRx Effects testing. Cypress / Playwright e2e. Use this skill to: - Detect runner (Karma+Jasmine vs Jest) and configure correctly. - Write component tests with TestBed. - Use component harnesses for Material / custom UI components. - Mock HttpClient via provideHttpClientTesting + HttpTestingController. - Test signal-based inputs with componentRef.setInput(). - Test NgRx Effects with provideMockActions. Do NOT use this skill for: - General Angular conventions (see angular-conventions). - Routing patterns broadly (see angular-routing — covers testing routes briefly). - Form patterns broadly (see angular-forms).
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Generate Jest-based unit tests for JavaScript/TypeScript code. Creates test files following Jest conventions with proper mocking, describe blocks, and coverage.
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Assists with unit and integration testing using Vitest, a Vite-native test runner. Use when writing tests, configuring mocks, setting up coverage, or migrating from Jest. Trigger words: vitest, unit testing, test runner, vi.fn, vi.mock, test coverage, jest replacement.
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Generate and run tests for Adobe App Builder actions and UI components. Scaffolds Jest unit tests, integration tests against deployed actions, contract tests for Adobe API interactions, and React component tests using Testing Library. Provides mock helpers for State, Files, Events SDKs, @adobe/aio-lib-* clients, ExC Shell context (@adobe/exc-app), and UIX Guest SDK (@adobe/uix-guest). Use this skill whenever the user mentions testing App Builder actions, writing unit tests for Runtime actions, creating integration tests, mocking Adobe SDKs, setting up test fixtures, running aio app test, or wants to verify action behavior before deployment. Also trigger when users mention Jest configuration for App Builder, test coverage, CI test setup, React component test, Testing Library, UI test, Provider wrapper, test my page, test my form, test my table, test my component, mock shell context, mock extension context, debug test failures, or fix Jest errors.
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Generate and run tests for Adobe App Builder actions and UI components. Scaffolds Jest unit tests, integration tests against deployed actions, contract tests for Adobe API interactions, and React component tests using Testing Library. Provides mock helpers for State, Files, Events SDKs, @adobe/aio-lib-* clients, ExC Shell context (@adobe/exc-app), and UIX Guest SDK (@adobe/uix-guest). Use this skill whenever the user mentions testing App Builder actions, writing unit tests for Runtime actions, creating integration tests, mocking Adobe SDKs, setting up test fixtures, running aio app test, or wants to verify action behavior before deployment. Also trigger when users mention Jest configuration for App Builder, test coverage, CI test setup, React component test, Testing Library, UI test, Provider wrapper, test my page, test my form, test my table, test my component, mock shell context, mock extension context, debug test failures, or fix Jest errors.
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Set up deployment checks for healthcare applications covering clinical decision support, patient information exposure, data integrity, workflows, and integrations. Block releases when critical tests fail, and flag lower workflow or integration pass rates for review.
Create integration tests for syncable metadata entities in Twenty itself. Cover invalid inputs, validation errors, and successful data operations, using reusable GraphQL request helpers, error snapshots, and cleanup routines to organize the test suite.