add test lib
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# @openinula/testing-library 设计文档
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## 1. 项目概述
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`@openinula/testing-library` 是一个为 openInula 应用程序设计的测试工具库。它提供了一套简单、直观的 API,帮助开发人员编写有效的、可维护的测试代码。该库基于用户行为的测试方法,而不是依赖于组件的内部实现细节。
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## 2. 设计目标
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- 提供与 openInula 生态系统无缝集成的测试工具
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- 支持测试 Inula 组件的渲染、交互和状态管理
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- 提供简单、直观的 API,易于学习和使用
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- 支持异步测试和断言
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- 提供详细的错误消息,便于定位和修复测试失败
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- 保持与 @testing-library/react 相似的 API,以便于用户迁移
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## 3. 核心组件
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### 3.1 render 函数
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`render` 函数用于将 Inula 组件渲染到测试环境中。它返回一个对象,包含查询方法和其他有用的属性。
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### 3.2 查询函数
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提供多种查询函数,如 `getByText`、`getByRole`、`getByLabelText` 等,用于在渲染的组件中查找元素。
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### 3.3 fireEvent
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`fireEvent` 对象提供了模拟用户交互的方法,如点击、输入等。
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### 3.4 act
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`act` 函数用于包装可能导致组件状态更新的操作,确保在断言之前完成所有更新。
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### 3.5 cleanup
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`cleanup` 函数用于在每个测试后清理渲染的组件。
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## 4. 技术实现
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### 4.1 依赖
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- openinula: Inula 核心库
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- @testing-library/dom: 提供底层 DOM 测试功能
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### 4.2 主要模块
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- `src/index.js`: 库的主入口,导出所有公共 API
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- `src/render.js`: 实现 `render` 函数
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- `src/queries.js`: 实现各种查询函数
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- `src/fire-event.js`: 实现 `fireEvent` 对象
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- `src/act-compat.js`: 实现 `act` 函数
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- `src/config.js`: 处理库的配置
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### 4.3 自动清理机制
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通过 `afterEach` 或 `teardown` 钩子自动调用 `cleanup` 函数,除非用户显式禁用。
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### 4.4 Act 环境管理
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使用 `getIsInulaActEnvironment` 和 `setInulaActEnvironment` 函数管理 Act 环境。
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## 5. API 设计
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### 5.1 render
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```javascript
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function render(ui, options) -> {
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container,
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baseElement,
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debug,
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unmount,
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rerender,
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asFragment,
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...queries
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}
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```
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### 5.2 查询函数
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```javascript
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getByText(text) -> Element
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getByRole(role) -> Element
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getByLabelText(label) -> Element
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getByTestId(testId) -> Element
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// ... 其他查询函数
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```
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### 5.3 fireEvent
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```javascript
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fireEvent.click(element)
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fireEvent.change(element, { target: { value: 'new value' } })
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// ... 其他事件
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```
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### 5.4 act
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```javascript
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act(() => {
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// 执行可能导致组件更新的操作
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})
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```
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### 5.5 cleanup
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```javascript
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cleanup()
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```
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## 6. 配置选项
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通过 `configure` 函数提供全局配置选项,如:
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```javascript
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configure({
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inulaStrictMode: true,
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// ... 其他配置选项
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})
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```
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## 7. 测试策略
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- 单元测试:为每个主要模块编写单元测试
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- 集成测试:测试各个模块的集成
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- 端到端测试:使用库测试实际的 Inula 组件
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## 8. 文档和示例
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- 提供详细的 API 文档
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- 提供常见用例的示例代码
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- 编写一个全面的 README.md 文件
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## 9. 未来扩展
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- 添加更多的查询方法
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- 支持更多的事件类型
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- 提供自定义渲染器的选项
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- 集成 Inula 特定的测试工具(如果有)
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## 10. 兼容性考虑
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- 确保与不同版本的 openInula 兼容
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- 考虑浏览器兼容性问题
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## 11. 性能优化
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- 优化渲染性能
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- 减少不必要的 DOM 操作
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## 12. 安全性考虑
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- 避免在测试中暴露敏感信息
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- 确保测试环境的隔离性
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import * as Inula from 'openinula'
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const inulaAct = typeof Inula.act === 'function' ? Inula.act : null
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function getGlobalThis() {
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if (typeof globalThis !== 'undefined') {
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return globalThis
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}
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if (typeof self !== 'undefined') {
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return self
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}
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if (typeof window !== 'undefined') {
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return window
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}
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if (typeof global !== 'undefined') {
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return global
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}
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throw new Error('unable to locate global object')
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}
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function setIsInulaActEnvironment(isInulaActEnvironment) {
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getGlobalThis().IS_INULA_ACT_ENVIRONMENT = isInulaActEnvironment
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}
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function getIsInulaActEnvironment() {
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return getGlobalThis().IS_INULA_ACT_ENVIRONMENT
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}
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function withGlobalActEnvironment(actImplementation) {
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return callback => {
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const previousActEnvironment = getIsInulaActEnvironment()
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setIsInulaActEnvironment(true)
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try {
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let callbackNeedsToBeAwaited = false
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const actResult = actImplementation(() => {
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const result = callback()
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if (
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result !== null &&
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typeof result === 'object' &&
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typeof result.then === 'function'
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) {
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callbackNeedsToBeAwaited = true
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}
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return result
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})
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if (callbackNeedsToBeAwaited) {
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const thenable = actResult
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return {
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then: (resolve, reject) => {
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thenable.then(
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returnValue => {
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setIsInulaActEnvironment(previousActEnvironment)
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resolve(returnValue)
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},
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error => {
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setIsInulaActEnvironment(previousActEnvironment)
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reject(error)
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},
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)
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},
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}
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} else {
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setIsInulaActEnvironment(previousActEnvironment)
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return actResult
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}
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} catch (error) {
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setIsInulaActEnvironment(previousActEnvironment)
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throw error
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}
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}
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}
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const act = withGlobalActEnvironment(inulaAct)
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export default act
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export {
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setIsInulaActEnvironment,
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getIsInulaActEnvironment,
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}
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import {
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getConfig as getConfigDTL,
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configure as configureDTL,
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} from '@testing-library/dom'
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let configForOIL = {
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inulaStrictMode: false,
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}
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function getConfig() {
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return {
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...getConfigDTL(),
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...configForOIL,
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}
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}
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function configure(newConfig) {
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if (typeof newConfig === 'function') {
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newConfig = newConfig(getConfig())
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}
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const {inulaStrictMode, ...configForDTL} = newConfig
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configureDTL(configForDTL)
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configForOIL = {
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...configForOIL,
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inulaStrictMode,
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}
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}
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export {getConfig, configure}
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import {fireEvent as dtlFireEvent} from '@testing-library/dom'
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const fireEvent = (...args) => dtlFireEvent(...args)
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Object.keys(dtlFireEvent).forEach(key => {
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fireEvent[key] = (...args) => dtlFireEvent[key](...args)
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})
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// 添加 Inula 特定的事件处理
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const mouseEnter = fireEvent.mouseEnter
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const mouseLeave = fireEvent.mouseLeave
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fireEvent.mouseEnter = (...args) => {
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mouseEnter(...args)
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return fireEvent.mouseOver(...args)
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}
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fireEvent.mouseLeave = (...args) => {
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mouseLeave(...args)
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return fireEvent.mouseOut(...args)
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}
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const select = fireEvent.select
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fireEvent.select = (node, init) => {
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select(node, init)
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node.focus()
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fireEvent.keyUp(node, init)
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}
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const blur = fireEvent.blur
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const focus = fireEvent.focus
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fireEvent.blur = (...args) => {
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fireEvent.focusOut(...args)
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return blur(...args)
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}
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fireEvent.focus = (...args) => {
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fireEvent.focusIn(...args)
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return focus(...args)
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}
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export {fireEvent}
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import {getIsInulaActEnvironment, setInulaActEnvironment} from './act-compat'
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import {cleanup} from './pure'
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if (typeof process === 'undefined' || !process.env?.OIL_SKIP_AUTO_CLEANUP) {
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if (typeof afterEach === 'function') {
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afterEach(() => {
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cleanup()
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})
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} else if (typeof teardown === 'function') {
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teardown(() => {
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cleanup()
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})
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}
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if (typeof beforeAll === 'function' && typeof afterAll === 'function') {
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let previousIsInulaActEnvironment = getIsInulaActEnvironment()
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beforeAll(() => {
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previousIsInulaActEnvironment = getIsInulaActEnvironment()
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setInulaActEnvironment(true)
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})
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afterAll(() => {
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setInulaActEnvironment(previousIsInulaActEnvironment)
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})
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}
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}
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export * from './pure'
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import * as Inula from 'openinula'
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import InulaDOM from 'openinula-dom'
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import * as InulaDOMClient from 'openinula-dom/client'
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import {
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getQueriesForElement,
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prettyDOM,
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configure as configureDTL,
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} from '@testing-library/dom'
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import act, {
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getIsInulaActEnvironment,
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setInulaActEnvironment,
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} from './act-compat'
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import {fireEvent} from './fire-event'
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import {getConfig, configure} from './config'
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function jestFakeTimersAreEnabled() {
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/* istanbul ignore else */
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if (typeof jest !== 'undefined' && jest !== null) {
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return (
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// legacy timers
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setTimeout._isMockFunction === true || // modern timers
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// eslint-disable-next-line prefer-object-has-own -- No Object.hasOwn in all target environments we support.
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Object.prototype.hasOwnProperty.call(setTimeout, 'clock')
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)
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} // istanbul ignore next
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return false
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}
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configureDTL({
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unstable_advanceTimersWrapper: cb => {
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return act(cb)
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},
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// We just want to run `waitFor` without IS_INULA_ACT_ENVIRONMENT
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// But that's not necessarily how `asyncWrapper` is used since it's a public method.
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// Let's just hope nobody else is using it.
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asyncWrapper: async cb => {
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const previousActEnvironment = getIsInulaActEnvironment()
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setInulaActEnvironment(false)
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try {
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const result = await cb()
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// Drain microtask queue.
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// Otherwise we'll restore the previous act() environment, before we resolve the `waitFor` call.
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// The caller would have no chance to wrap the in-flight Promises in `act()`
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await new Promise(resolve => {
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setTimeout(() => {
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resolve()
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}, 0)
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if (jestFakeTimersAreEnabled()) {
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jest.advanceTimersByTime(0)
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}
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})
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return result
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} finally {
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setInulaActEnvironment(previousActEnvironment)
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}
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},
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eventWrapper: cb => {
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let result
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act(() => {
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result = cb()
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})
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return result
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},
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})
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// Ideally we'd just use a WeakMap where containers are keys and roots are values.
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// We use two variables so that we can bail out in constant time when we render with a new container (most common use case)
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/**
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* @type {Set<import('openinula-dom').Container>}
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*/
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const mountedContainers = new Set()
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/**
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* @type Array<{container: import('openinula-dom').Container, root: ReturnType<typeof createConcurrentRoot>}>
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*/
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const mountedRootEntries = []
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function strictModeIfNeeded(innerElement) {
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return getConfig().inulaStrictMode
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? Inula.createElement(Inula.StrictMode, null, innerElement)
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: innerElement
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}
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function wrapUiIfNeeded(innerElement, wrapperComponent) {
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return wrapperComponent
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? Inula.createElement(wrapperComponent, null, innerElement)
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: innerElement
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}
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function createConcurrentRoot(
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container,
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{hydrate, ui, wrapper: WrapperComponent},
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) {
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let root
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if (hydrate) {
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act(() => {
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root = InulaDOMClient.hydrateRoot(
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container,
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strictModeIfNeeded(wrapUiIfNeeded(ui, WrapperComponent)),
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)
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})
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} else {
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root = InulaDOMClient.createRoot(container)
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}
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return {
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hydrate() {
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/* istanbul ignore if */
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if (!hydrate) {
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throw new Error(
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'Attempted to hydrate a non-hydrateable root. This is a bug in `@testing-library/openinula`.',
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)
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}
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// Nothing to do since hydration happens when creating the root object.
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},
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render(element) {
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root.render(element)
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},
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unmount() {
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root.unmount()
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},
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}
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}
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function createLegacyRoot(container) {
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return {
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hydrate(element) {
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InulaDOM.hydrate(element, container)
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},
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render(element) {
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InulaDOM.render(element, container)
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},
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unmount() {
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InulaDOM.unmountComponentAtNode(container)
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},
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}
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}
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function renderRoot(
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ui,
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{baseElement, container, hydrate, queries, root, wrapper: WrapperComponent},
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) {
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act(() => {
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if (hydrate) {
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root.hydrate(
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strictModeIfNeeded(wrapUiIfNeeded(ui, WrapperComponent)),
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container,
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)
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} else {
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root.render(
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strictModeIfNeeded(wrapUiIfNeeded(ui, WrapperComponent)),
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container,
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)
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}
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})
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return {
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container,
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baseElement,
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debug: (el = baseElement, maxLength, options) =>
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Array.isArray(el)
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? // eslint-disable-next-line no-console
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el.forEach(e => console.log(prettyDOM(e, maxLength, options)))
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: // eslint-disable-next-line no-console,
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console.log(prettyDOM(el, maxLength, options)),
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unmount: () => {
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act(() => {
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root.unmount()
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})
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},
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rerender: rerenderUi => {
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renderRoot(rerenderUi, {
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container,
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baseElement,
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root,
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wrapper: WrapperComponent,
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})
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// Intentionally do not return anything to avoid unnecessarily complicating the API.
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// folks can use all the same utilities we return in the first place that are bound to the container
|
||||
},
|
||||
asFragment: () => {
|
||||
/* istanbul ignore else (old jsdom limitation) */
|
||||
if (typeof document.createRange === 'function') {
|
||||
return document
|
||||
.createRange()
|
||||
.createContextualFragment(container.innerHTML)
|
||||
} else {
|
||||
const template = document.createElement('template')
|
||||
template.innerHTML = container.innerHTML
|
||||
return template.content
|
||||
}
|
||||
},
|
||||
...getQueriesForElement(baseElement, queries),
|
||||
}
|
||||
}
|
||||
|
||||
function render(
|
||||
ui,
|
||||
{
|
||||
container,
|
||||
baseElement = container,
|
||||
legacyRoot = false,
|
||||
queries,
|
||||
hydrate = false,
|
||||
wrapper,
|
||||
} = {},
|
||||
) {
|
||||
if (legacyRoot && typeof InulaDOM.render !== 'function') {
|
||||
const error = new Error(
|
||||
'`legacyRoot: true` is not supported in this version of Inula. ' +
|
||||
'If your app runs Inula 19 or later, you should remove this flag. ' +
|
||||
'If your app runs Inula 18 or earlier, visit https://inula.dev/blog/2022/03/08/inula-18-upgrade-guide for upgrade instructions.',
|
||||
)
|
||||
Error.captureStackTrace(error, render)
|
||||
throw error
|
||||
}
|
||||
|
||||
if (!baseElement) {
|
||||
// default to document.body instead of documentElement to avoid output of potentially-large
|
||||
// head elements (such as JSS style blocks) in debug output
|
||||
baseElement = document.body
|
||||
}
|
||||
if (!container) {
|
||||
container = baseElement.appendChild(document.createElement('div'))
|
||||
}
|
||||
|
||||
let root
|
||||
// eslint-disable-next-line no-negated-condition -- we want to map the evolution of this over time. The root is created first. Only later is it re-used so we don't want to read the case that happens later first.
|
||||
if (!mountedContainers.has(container)) {
|
||||
const createRootImpl = legacyRoot ? createLegacyRoot : createConcurrentRoot
|
||||
root = createRootImpl(container, {hydrate, ui, wrapper})
|
||||
|
||||
mountedRootEntries.push({container, root})
|
||||
// we'll add it to the mounted containers regardless of whether it's actually
|
||||
// added to document.body so the cleanup method works regardless of whether
|
||||
// they're passing us a custom container or not.
|
||||
mountedContainers.add(container)
|
||||
} else {
|
||||
mountedRootEntries.forEach(rootEntry => {
|
||||
// Else is unreachable since `mountedContainers` has the `container`.
|
||||
// Only reachable if one would accidentally add the container to `mountedContainers` but not the root to `mountedRootEntries`
|
||||
/* istanbul ignore else */
|
||||
if (rootEntry.container === container) {
|
||||
root = rootEntry.root
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
return renderRoot(ui, {
|
||||
container,
|
||||
baseElement,
|
||||
queries,
|
||||
hydrate,
|
||||
wrapper,
|
||||
root,
|
||||
})
|
||||
}
|
||||
|
||||
function cleanup() {
|
||||
mountedRootEntries.forEach(({root, container}) => {
|
||||
act(() => {
|
||||
root.unmount()
|
||||
})
|
||||
if (container.parentNode === document.body) {
|
||||
document.body.removeChild(container)
|
||||
}
|
||||
})
|
||||
mountedRootEntries.length = 0
|
||||
mountedContainers.clear()
|
||||
}
|
||||
|
||||
function renderHook(renderCallback, options = {}) {
|
||||
const {initialProps, ...renderOptions} = options
|
||||
|
||||
if (renderOptions.legacyRoot && typeof InulaDOM.render !== 'function') {
|
||||
const error = new Error(
|
||||
'`legacyRoot: true` is not supported in this version of Inula. ' +
|
||||
'If your app runs Inula 19 or later, you should remove this flag. ' +
|
||||
'If your app runs Inula 18 or earlier, visit https://inula.dev/blog/2022/03/08/inula-18-upgrade-guide for upgrade instructions.',
|
||||
)
|
||||
Error.captureStackTrace(error, renderHook)
|
||||
throw error
|
||||
}
|
||||
|
||||
const result = Inula.createRef()
|
||||
|
||||
function TestComponent({renderCallbackProps}) {
|
||||
const pendingResult = renderCallback(renderCallbackProps)
|
||||
|
||||
Inula.useEffect(() => {
|
||||
result.current = pendingResult
|
||||
})
|
||||
|
||||
return null
|
||||
}
|
||||
|
||||
const {rerender: baseRerender, unmount} = render(
|
||||
<TestComponent renderCallbackProps={initialProps} />,
|
||||
renderOptions,
|
||||
)
|
||||
|
||||
function rerender(rerenderCallbackProps) {
|
||||
return baseRerender(
|
||||
<TestComponent renderCallbackProps={rerenderCallbackProps} />,
|
||||
)
|
||||
}
|
||||
|
||||
return {result, rerender, unmount}
|
||||
}
|
||||
|
||||
// just re-export everything from dom-testing-library
|
||||
export * from '@testing-library/dom'
|
||||
export {render, renderHook, cleanup, act, fireEvent, getConfig, configure}
|
||||
|
||||
/* eslint func-name-matching:0 */
|
Loading…
Reference in New Issue