jest.mock 如何查找模拟函数是否被调用

Question

I m mocking a module like this:我正在嘲笑这样的模块：

jest.mock('@/src/myModule.ts', () => ({
  load: jest.fn(),
  delete: jest.fn(),
}));

In my test how I can check whether load was called or not?在我的测试中，如何检查负载是否被调用？

it('some test', () => {
  const x = someFunction(); // this method is calling myModule.ts/load
  expect(???);
});

The point is I cannot reference load from outside, so if I try this关键是我不能从外部引用负载，所以如果我尝试这个

const objs = {
    load: jest.fn(),
    delete: jest.fn(),
};
jest.mock('@/src/myModule.ts', () => objs);

and then try to refer 'objs', its not working然后尝试引用'objs'，它不起作用

...
expect(objs.load).toBeCalledTimes(1); // failed
...

Answer 1

const loadMock = jest.fn()
jest.mock('@/src/myModule.ts', () => ({
  load: () => loadMock(),
  delete: jest.fn(),
}));

In your test you can check whether load was called or not:在您的测试中，您可以检查是否调用了负载：

it('some test', () => {
  const x = someFunction(); // this method is calling myModule.ts/load
  expect(loadMock).toHaveBeenCalled();
});