module.exports = {
  extends: ["@aiou"],
  overrides: {
    env: {
      jest: true
    }
  }
};

const ERROR_CODE = jest
  .spyOn<any, any>(process, "exit")
  .mockImplementation(() => {});
func();
expect(ERROR_CODE).toHaveBeenCalledWith(1);

npm

jest path/file

如果 `jest` 是 `npm script`

{
  "test": "jest"
}

可以通过 `npm run test -- path/file`

pnpm

`pnpm run test -- -- path/file`

yarn

• `yarn test -- --coverage --updateSnapshot`

isArray

expect(Array.isArray([])).toBe(true);

match value

expect(func()).toEqual(["a"]);

scannner = {
  scan() {
    console.log("/user/jiangweixian");
  }
};

console.log

it("debug should be called", async () => {
  console.log = jest.fn();
  // in scanner.scan will exec console.log
  await scanner.scan("/user/jiangweixian");
  expect(console.log).toHaveBeenCalledWith("/user/jiangweixian");
});

/**
 * @jest-environment node
 */

写在`*.test.ts`头部，作为注释就行。

可以解决一些请求的跨域问题