Results for “mocking”

Unit testing patterns with Vitest - mocking, fixtures, isolation, and fast feedback.

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Never test mock behavior. Never add test-only methods to production classes. Understand dependencies before mocking.

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Intercept, inspect, and modify HTTP/HTTPS traffic via a Rust MITM proxy with Lua scripting hooks. Supports API debugging, LLM call capture for evals, endpoint mocking, CORS/auth header injection, latency simulation, and telemetry blocking. Triggers on 'proxy', 'intercept traffic', 'inspect requests', 'mock API', 'capture API calls', 'MITM', 'network debug', 'HTTP inspection'.

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Testing patterns and principles. Unit, integration, mocking strategies.

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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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Generate comprehensive unit tests with proper structure, mocking, and coverage. Use for general unit testing guidance across languages.

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Generate pytest-based unit tests for Python code. Creates test files following pytest conventions with proper fixtures, mocking, and parametrization.

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Generate unit test files with structure, fixtures, and mocking patterns for Python (pytest) or JS/TS (Jest), auto-detecting the framework. Use when starting tests for a source file. Trigger on "scaffold tests", "generate test file", "write test boilerplate", "set up tests for".

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Playwright E2E testing patterns - test structure, Page Object Model, locator strategies, assertions, network mocking, visual regression, parallel execution, fixtures, and configuration

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Cypress E2E testing patterns - test structure, data-cy selectors, cy.intercept() mocking, custom commands, fixtures, component testing, accessibility testing with cypress-axe, and CI/CD integration

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Vitest test runner - configuration, assertions, mocking (vi.fn, vi.mock, vi.spyOn), fake timers, snapshot testing, coverage, workspace projects

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MSW handlers, browser/server workers, test data. Use when setting up API mocking for development or testing, creating mock handlers with variants, or sharing mocks between browser and Node environments.

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Detox E2E gray-box testing for React Native - matchers, actions, expectations, waitFor, device API, synchronization, mocking, artifacts, CI integration

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E2E testing with Playwright, main process unit testing, IPC testing, dialog/menu mocking, CI headless setup

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Use when testing Django applications with pytest - TDD workflow, pytest-django setup, factory_boy and model-bakery fixtures, DRF API testing, mocking and patching, integration tests, mutation testing with mutmut, or coverage

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Use when writing Python tests with pytest - fixtures, parametrization, markers, conftest layout, pytest-asyncio, pytest-django, coverage with pytest-cov, mocking with pytest-mock, parallel runs with xdist, mutation testing with mutmut, or CI integration

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Unity Test Framework patterns for EditMode and PlayMode tests including async testing, mocking, and test organization.

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Use when implementing UI from Figma, Sketch, MasterGo, Pixso, Modao, MockingBot, screenshots, design selections, design tokens, or design-to-code tasks for production frontend components/pages; Chinese triggers include design draft, implementation by design.

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Use when building Python 3.11+ applications requiring type safety, async programming, or robust error handling. Generates type-annotated Python code, configures mypy in strict mode, writes pytest test suites with fixtures and mocking, and validates code with black and ruff. Invoke for type hints, async/await patterns, dataclasses, dependency injection, logging configuration, and structured error handling.

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Testing patterns and principles. Unit, integration, mocking strategies.

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Apex test patterns for @InvocableMethod agent actions: per-reason-code branch coverage, bulk safety, callout mocking, deterministic assertions. NOT for testing whether the agent routes to the right topic or answers well — use agentforce/agent-testing-and-evaluation. NOT for designing the error envelope the tests assert on — use agentforce/agent-action-error-handling.

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Write and maintain end-to-end tests with Playwright. Use when someone asks to "add e2e tests", "test my web app", "set up Playwright", "write browser tests", "test login flow", "visual regression testing", "test across browsers", or "automate UI testing". Covers test setup, page objects, authentication, API mocking, visual comparisons, and CI integration.

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Use for Vue.js testing. Covers Vitest, Vue Test Utils, component testing, mocking, testing patterns, and Playwright for E2E testing.

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Vitest fast unit testing framework powered by Vite with Jest-compatible API. Use when writing tests, mocking, configuring coverage, or working with test filtering and fixtures.

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