chai-jest-mocks

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Chai 插件，添加了针对 jest 模拟函数的断言

注意 这仍然是一个正在进行的工作，更多匹配器和更好的文档（以及测试）即将推出！

安装

在命令行中

$ npm install --save-dev chai-jest-mocks

使用方法

首先，告诉 chai 你想要使用 chai-jest-mocks

const chai = require('chai');
const chaiJestMock = require('chai-jest-mocks');

chai.use(chaiJestMock);

然后你就可以使用新的断言

// Expect a mock to be called
expect(mockFn).to.have.beenCalled();

// Expect a mock to have been called a certain number of times
expect(mockFn).to.have.beenCalledTimes(4);

// Expect a mock to have been called with specific arguments
expect(mockFn).to.have.beenCalledWith('hello', 'world');

// Expect a mock to have been last called with specific arguments
expect(mockFn).to.have.beenLastCalledWith('hello', 'world');

// Expect a mock to have been nth (in this case, second) called with specific arguments
expect(mockFn).to.have.beenNthCalledWith(2, 'hello', 'world');

// Expect a mock to have returned succesfully (i.e, not throw)
expect(mockFn).to.have.returned();

// Expect a mock to have returned succesfully a certain number of times
expect(mockFn).to.have.returnedTimes(3);