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cypress

Provides comprehensive guidance for Cypress end-to-end testing including commands, assertions, component testing, CI/CD integration, and best practices. Use when the user asks about Cypress, needs to write E2E tests, component tests, or configure Cypress for testing.

When to use this skill

Use this skill whenever the user wants to:

  • Set up Cypress for end-to-end testing
  • Write Cypress test cases
  • Configure Cypress for component testing
  • Integrate Cypress with CI/CD pipelines
  • Use Cypress commands and assertions
  • Debug Cypress tests
  • Optimize Cypress test performance
  • Migrate from other testing frameworks to Cypress
  • Use Cypress with different frameworks (React, Vue, Angular, Svelte)
  • Configure Cypress for different environments

How to use this skill

This skill is organized to match the Cypress official documentation structure (https://docs.cypress.io/app/get-started/why-cypress, https://docs.cypress.io/api/table-of-contents). When working with Cypress:

  1. Identify the topic from the user's request:

    • Getting Started/快速开始 → examples/get-started/
    • Core Concepts/核心概念 → examples/core-concepts/
    • Component Testing/组件测试 → examples/component-testing/
    • End-to-End Testing/E2E测试 → examples/end-to-end-testing/
    • Continuous Integration/持续集成 → examples/continuous-integration/
    • Guides/指南 → examples/guides/
    • References/参考 → examples/references/
    • API Reference/API 参考 → api/
  2. Load the appropriate example file from the examples/ directory:

    Getting Started (快速开始) - examples/get-started/:

    • examples/get-started/install-cypress.md
    • examples/get-started/open-the-app.md
    • examples/get-started/why-cypress.md

    Core Concepts (核心概念) - examples/core-concepts/:

    • examples/core-concepts/best-practices.md
    • examples/core-concepts/interacting-with-elements.md
    • examples/core-concepts/introduction-to-cypress.md
    • examples/core-concepts/open-mode.md
    • examples/core-concepts/retry-ability.md
    • examples/core-concepts/test-isolation.md
    • examples/core-concepts/testing-types.md
    • examples/core-concepts/variables-and-aliases.md
    • examples/core-concepts/writing-and-organizing-tests.md

    Component Testing (组件测试) - examples/component-testing/:

    • examples/component-testing/angular/api.md
    • examples/component-testing/angular/examples.md
    • examples/component-testing/angular/overview.md
    • examples/component-testing/component-framework-configuration.md
    • examples/component-testing/custom-frameworks.md
    • examples/component-testing/get-started.md
    • examples/component-testing/react/api.md
    • examples/component-testing/react/examples.md
    • examples/component-testing/react/overview.md
    • examples/component-testing/styling-components.md
    • examples/component-testing/svelte/api.md
    • examples/component-testing/svelte/examples.md
    • examples/component-testing/svelte/overview.md
    • examples/component-testing/vue/api.md
    • examples/component-testing/vue/examples.md
    • examples/component-testing/vue/overview.md

    End-to-End Testing (E2E测试) - examples/end-to-end-testing/:

    • examples/end-to-end-testing/testing-your-app.md
    • examples/end-to-end-testing/writing-your-first-end-to-end-test.md

    Continuous Integration (持续集成) - examples/continuous-integration/:

    • examples/continuous-integration/aws-codebuild.md
    • examples/continuous-integration/bitbucket-pipelines.md
    • examples/continuous-integration/circleci.md
    • examples/continuous-integration/github-actions.md
    • examples/continuous-integration/gitlab-ci.md
    • examples/continuous-integration/overview.md

    Guides (指南) - examples/guides/:

    • examples/guides/accessibility-testing.md
    • examples/guides/authentication-testing/amazon-cognito-authentication.md
    • examples/guides/authentication-testing/auth0-authentication.md
    • examples/guides/authentication-testing/azure-active-directory-authentication.md
    • examples/guides/authentication-testing/google-authentication.md
    • examples/guides/authentication-testing/okta-authentication.md
    • examples/guides/authentication-testing/social-authentication.md
    • examples/guides/conditional-testing.md
    • examples/guides/cross-browser-testing.md
    • examples/guides/cross-origin-testing.md
    • examples/guides/cypress-studio.md
    • examples/guides/debugging.md
    • examples/guides/migration/protractor-to-cypress.md
    • examples/guides/migration/selenium-to-cypress.md
    • examples/guides/network-requests.md
    • examples/guides/screenshots-and-videos.md
    • examples/guides/stubs-spies-and-clocks.md
    • examples/guides/test-retries.md

    References (参考) - examples/references/:

    • examples/references/advanced-installation.md
    • examples/references/assertions.md
    • examples/references/bundled-libraries.md
    • examples/references/changelog.md
    • examples/references/client-certificates.md
    • examples/references/command-line.md
    • examples/references/configuration.md
    • examples/references/content-security-policy.md
    • examples/references/environment-variables.md
    • examples/references/error-messages.md
    • examples/references/experiments.md
    • examples/references/launching-browsers.md
    • examples/references/migration-guide.md
    • examples/references/module-api.md
    • examples/references/proxy-configuration.md
    • examples/references/recipes.md
    • examples/references/roadmap.md
    • examples/references/trade-offs.md
    • examples/references/troubleshooting.md

    Other Sections:

    • examples/faq.md
    • examples/plugins/plugins-guide.md
    • examples/plugins/plugins-list.md
    • examples/tooling/IDE-integration.md
    • examples/tooling/code-coverage.md
    • examples/tooling/reporters.md
    • examples/tooling/typescript-support.md
    • examples/tooling/visual-testing.md
  3. Reference API documentation in the api/ directory when needed:

    Commands API - api/commands/:

    • api/commands/and.md
    • api/commands/as.md
    • api/commands/blur.md
    • api/commands/check.md
    • api/commands/children.md
    • api/commands/clear.md
    • api/commands/clearallcookies.md
    • api/commands/clearalllocalstorage.md
    • api/commands/clearallsessionstorage.md
    • api/commands/clearcookie.md
    • api/commands/clearcookies.md
    • api/commands/clearlocalstorage.md
    • api/commands/click.md
    • api/commands/clock.md
    • api/commands/closest.md
    • api/commands/contains.md
    • api/commands/dblclick.md
    • api/commands/debug.md
    • api/commands/document.md
    • api/commands/each.md
    • api/commands/end.md
    • api/commands/eq.md
    • api/commands/exec.md
    • api/commands/filter.md
    • api/commands/find.md
    • api/commands/first.md
    • api/commands/fixture.md
    • api/commands/focus.md
    • api/commands/focused.md
    • api/commands/get.md
    • api/commands/getallcookies.md
    • api/commands/getalllocalstorage.md
    • api/commands/getallsessionstorage.md
    • api/commands/getcookie.md
    • api/commands/getcookies.md
    • api/commands/go.md
    • api/commands/hash.md
    • api/commands/hover.md
    • api/commands/intercept.md
    • api/commands/invoke.md
    • api/commands/its.md
    • api/commands/last.md
    • api/commands/location.md
    • api/commands/log.md
    • api/commands/mount.md
    • api/commands/next.md
    • api/commands/nextall.md
    • api/commands/nextuntil.md
    • api/commands/not.md
    • api/commands/origin.md
    • ... and 43 more command files

    - :

  4. Follow the specific instructions in that example file for syntax, structure, and best practices

    Important Notes:

    • All examples follow Cypress best practices
    • Examples include both JavaScript and TypeScript versions where applicable
    • Each example file includes parameters, returns, common errors, best practices, and scenarios
    • Always check the example file for best practices and common patterns
  5. Reference the official documentation when needed:

    • Getting Started: https://docs.cypress.io/app/get-started/why-cypress
    • API Reference: https://docs.cypress.io/api/table-of-contents

Best Practices

  1. Use data-cy attributes: Use data-cy attributes for stable, test-friendly selectors
  2. Avoid hard-coded waits: Leverage Cypress's built-in retry-ability instead of cy.wait()
  3. Keep tests isolated: Each test should be independent and not rely on other tests
  4. Use custom commands: Create custom commands for reusable test logic
  5. Follow assertion patterns: Use Cypress's built-in assertions for better error messages
  6. Configure properly: Set up cypress.config.js correctly for your project
  7. Use fixtures: Use fixtures for test data instead of hard-coding values
  8. Component testing: Use component testing for isolated component testing
  9. CI/CD integration: Configure Cypress properly for CI/CD environments
  10. Debug effectively: Use Cypress's debugging tools and commands

Resources

  • Official Documentation: https://docs.cypress.io/
  • Getting Started: https://docs.cypress.io/app/get-started/why-cypress
  • API Reference: https://docs.cypress.io/api/table-of-contents
  • GitHub Repository: https://github.com/cypress-io/cypress

Keywords

Cypress, end-to-end testing, E2E testing, component testing, test automation, browser testing, test framework, assertions, commands, fixtures, CI/CD, continuous integration, test runner, 端到端测试, E2E测试, 组件测试, 测试自动化, 浏览器测试, 测试框架, 断言, 命令, 固定数据, 持续集成, 测试运行器

能力边界

✅ 适用场景

  • 当你需要使用此技能对应的技术栈时
  • 当项目需要遵循最佳实践时
  • 当需要快速上手或深入理解核心概念时

⚠️ 需要注意

  • 复杂业务逻辑需要结合具体场景调整
  • 性能优化需要根据实际数据量评估

❌ 不适用场景

  • 不相关的技术栈或框架
  • 需要完全自定义的特殊场景

常见陷阱 (Gotchas)

  1. 版本兼容性:注意框架版本与依赖库的兼容性,不同版本 API 可能有差异
  2. 配置文件格式:配置文件格式错误是最常见的问题,建议使用编辑器的语法检查
  3. 环境变量:确保所有必要的环境变量已正确设置,敏感信息不要硬编码
  4. 依赖冲突:多版本共存时注意依赖冲突,使用 lock 文件锁定版本
  5. 性能陷阱:大数据量场景下注意性能优化,避免 N+1 查询等常见问题

使用流程

Step 1: 环境准备

确保开发环境已安装必要的依赖和工具。

Step 2: 配置初始化

根据项目需求进行基础配置。

Step 3: 核心功能使用

按照示例代码实现核心功能。

Step 4: 测试验证

运行测试确保功能正常。

Step 5: 部署上线

完成开发后进行部署和监控。

Cypress API
api/cypress-api/
  • api/cypress-api/arch.md
  • api/cypress-api/browser.md
  • api/cypress-api/catalog-of-events.md
  • api/cypress-api/config.md
  • api/cypress-api/cookies.md
  • api/cypress-api/currentretry.md
  • api/cypress-api/currenttest.md
  • api/cypress-api/custom-commands.md
  • api/cypress-api/custom-queries.md
  • api/cypress-api/cypress-log.md
  • api/cypress-api/dom.md
  • api/cypress-api/element-selector-api.md
  • api/cypress-api/ensure.md
  • api/cypress-api/env.md
  • api/cypress-api/isbrowser.md
  • api/cypress-api/iscy.md
  • api/cypress-api/keyboard-api.md
  • api/cypress-api/platform.md
  • api/cypress-api/require.md
  • api/cypress-api/screenshot-api.md
  • api/cypress-api/session.md
  • api/cypress-api/spec.md
  • api/cypress-api/stop.md
  • api/cypress-api/testing-type.md
  • api/cypress-api/version.md

Node Events API - api/node-events/:

  • api/node-events/after-run-api.md
  • api/node-events/after-screenshot-api.md
  • api/node-events/after-spec-api.md
  • api/node-events/before-run-api.md
  • api/node-events/before-spec-api.md
  • api/node-events/browser-launch-api.md
  • api/node-events/configuration-api.md
  • api/node-events/overview.md
  • api/node-events/preprocessors-api.md

Utilities API - api/utilities/:

  • api/utilities/$.md
  • api/utilities/_.md
  • api/utilities/blob.md
  • api/utilities/buffer.md
  • api/utilities/minimatch.md
  • api/utilities/promise.md
  • api/utilities/sinon.md

Table of Contents - api/table-of-contents/: