javascript - 在这次测试之外会看到这个月亮吗？

Question

我看到一个测试在 describe block 之外有一个 jest.mock 调用。

我担心这会导致在测试之外可见的变化。我不希望此测试影响其他测试。

应该将 jest.mock 移到 describe block 内还是按原样移动？

import target from '../';

jest.mock('../../../helpers/helpers.api', () => ({
    httpPost(...args) {
        return args;
    }
}));

describe('my component', () => {
    it('should foo', () => {
        //... 
    });
});

Answer 1

据我了解，您的示例没有问题。

Modules that are mocked with jest.mock are mocked only for the file that calls jest.mock. Another file that imports the module will get the original implementation even if run after the test file that mocks the module.

– https://facebook.github.io/jest/docs/en/jest-object.html#jestmockmodulename-factory-options