testing▌

Comprehensive Java testing with JUnit 5, Mockito, and integration testing frameworks. \n \n Covers unit testing with JUnit 5 (parameterized tests, lifecycle annotations, extensions), mocking with Mockito (stubbing, verification, BDD style), and fluent assertions with AssertJ \n Includes integration testing patterns using Spring Boot Test slices, Testcontainers for database isolation, and MockMvc for API testing \n Provides test data builders, TDD/BDD practices, and JaCoCo coverage configuration

Iterative test-debug-fix cycles for Airflow DAGs with comprehensive failure diagnosis. \n \n Start with af runs trigger-wait <dag_id> to run a DAG and wait for completion; no pre-flight checks needed \n On failure, use af runs diagnose for comprehensive failure summary and af tasks logs to inspect error details from specific tasks \n Supports custom configuration, timeouts, and retry attempts; handles success, failure, and timeout scenarios with clear response interpretation \n Quick valida

Cross-browser E2E testing with Page Objects, authentication, and CI/CD integration. \n \n Supports three browser engines (Chromium, Firefox, WebKit) plus mobile viewports with parallel test execution and automatic retries \n Page Object Model pattern with base classes, role-based locators, and web-first assertions that auto-wait and retry \n Built-in authentication setup, API mocking, visual testing, and comprehensive dead link detection across entire sites \n GitHub Actions integration with art

Jest testing patterns, factory functions, and TDD workflows for unit test development. \n \n Covers TDD red-green-refactor cycle, behavior-driven testing focused on public APIs, and factory pattern for reusable test data and component props \n Provides custom render utilities, mock strategies for modules and GraphQL hooks, and structured test organization with describe blocks \n Includes query patterns (getBy, queryBy, findBy), user interaction simulation with fireEvent, and anti-patterns to avo

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Fast, persistent browser automation with session continuity across sequential agent commands. \n \n Supports three browser modes: headless Chromium, real Chrome with profile support, and cloud-hosted remote browsers with proxy configuration \n Includes 15+ command categories covering navigation, page inspection, interactions, data extraction, cookie management, and JavaScript execution \n Offers cloud session management, local server tunneling via Cloudflare, and parallel subagent execution thro

Visual snapshot testing for web renderer components using vitest fixtures. \n \n Create test fixtures in packages/web-renderer/src/test/fixtures that define a React component, dimensions, frame rate, and duration \n Register fixtures in packages/web-renderer/src/test/Root.tsx to enable preview functionality \n Write test cases that render stills using renderStillOnWeb() and validate output with testImage() snapshot comparison \n Run tests with bunx vitest src/test/video.test.tsx and update docum

Write failing tests first, then minimal code to pass, then refactor while keeping tests green. \n \n Follows the red-green-refactor cycle: write one failing test, verify it fails correctly, implement minimal code to pass, verify all tests pass, then refactor safely \n Requires watching each test fail before writing implementation code; tests that pass immediately prove nothing about correctness \n Applies to all new features, bug fixes, refactoring, and behavior changes; code written before test

Vitest testing guide for LobeHub with commands, patterns, and best practices. \n \n Run specific test files with bunx vitest run commands; avoid bun run test which runs 3000+ tests (~10 minutes) \n Prefer vi.spyOn over vi.mock for targeted, maintainable mocks; use vi.stubGlobal for browser APIs \n Test observable behavior rather than implementation details; delete param-forwarding tests that duplicate higher-level coverage \n Includes detailed guides for database models, Electron IPC, Zustand st

Modern Swift testing framework with @Test macros, parameterized tests, traits, and async support. \n \n Write unit tests using @Test macros with #expect and #require assertions; prefer Swift Testing over XCTest for all new tests (Xcode 16+, Swift 6+) \n Organize tests with @Suite for grouping, custom tags for filtering, and traits for conditional execution, time limits, and known issues \n Support parameterized tests via arguments: with enum cases, ranges, or cartesian products; use confirmation