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vite-plugin-doctest

v1.1.1

Published

Vite plugin for documentation testing powered with vitest

Downloads

957

Readme

vite-plugin-doctest

Vitest plugin for doctest. You can write test in your source code with documentation.

Usage

/**
 * @example
 * ```ts @import.meta.vitest
 * expect(add(1, 2)).toBe(3);
 * assert(add(3, 4) === 7);
 * ```
 */
export function add(a: number, b: number) {
  return a + b;
}

You can also test code in markdown.

# Test

```ts:[email protected]
const { add } = await import('./add');
expect(add(1, 2)).toBe(3);
```

Setup

npm i -D vitest vite-plugin-doctest
// vitest.config.ts or vite.config.ts (js)
import { defineConfig } from 'vitest/config'; // or `import { defineConfig } from 'vite';`
import { doctest } from 'vite-plugin-doctest';
export default defineConfig({
  plugins: [doctest({ /* options */ })],
  test: {
    includeSource: [
      './src/**/*.[jt]s?(x)',
      './**/*.md', // You can disable markdown test by removing this line
    ],
  },
});
npx vitest

Options

Currently, there is no option.

type Options = {}

How it works

This plugin will transform your documentation tests.

This transformation occurs only when you start Vitest. So, you don't need to worry about the performance of your production code.

/**
 * @example
 * ```ts @import.meta.vitest
 * expect(add(1, 2)).toBe(3);
 * ```
 */
export function add(a: number, b: number) {
  return a + b;
}

/**
 * @example
 * ```ts @import.meta.vitest
 * expect(add(1, 2)).toBe(3);
 * ```
 */
export function add(a: number, b: number) {
  return a + b;
}

if (import.meta.vitest) {
const {assert,chai,createExpect,expect,getRunningMode,isWatchMode,should,vi,vitest} = import.meta.vitest;
import.meta.vitest.test("1+2=3", async () => {
expect(add(1, 2)).toBe(3);
});
}

Constraints

This plugin has some constraints.

  • You cannot use typechecks. (e.g. expectTypeOf, assertType, etc...)
  • You cannot use lifecycle hooks. (e.g. beforeEach, afterAll, etc...)
  • Currently you cannot use import statement in your test code. (You can use dynamic import)
  • and more... (Please make an issue if you find it)

Related

License

MIT License