.toHaveBeenCalledTimes(number) .toHaveBeenCalledWith(arg1, arg2, …) .toHaveBeenLastCalledWith(arg1, arg2, …) .toHaveBeenNthCalledWith(nthCall, arg1, arg2, …) .toHaveReturned() .toHaveReturnedTimes(number) .toHaveReturnedWith(value) .toHaveLastReturnedWith(value) .toHaveNthReturnedWith...
1. 在toEqual或toBeCalledWith2. 匹配arraycontains中的元素3. 匹配objectContaining 或者toMatchObject的属性 这个示例还展示了如何使用expect嵌套多个不对称的匹配器。在expect.arrayContaining stringMatching。 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 describe('stringMatching in arrayContaining', () =...
toBeCalledWith( expect.objectContaining({ x: expect.any(Number), y: expect.any(Number), }), ); }); expect.stringMatching(string | regexp) 匹配与预期regexp匹配的接收字符串,你可以用它代替文字的值: 在toEqual或toBeCalledWith 匹配arraycontains中的元素 匹配objectContaining 或者toMatchObject的属性 ...
The usual case is to check something is not called at all. However, thetoHaveBeenCalledWithandtoHaveBeenCalledTimesfunctions also support negation withexpect().not. constmyObj={doSomething(){console.log('does something');}};test('jest.fn().not.toBeCalled()/toHaveBeenCalled()',()=>{cons...
it('handle response with no manipulation requests', async () => { const callback = jest.fn() handleUserMessage(callback) // call the method to be tested expect(callback).toHaveBeenCalled() }) 在这个例子当中,做assertion时会失败。
expect(setValue).toHaveBeenCalledWith(-1); }); }); 而使用 React Testing Library 编写的单元测试还是可以正常运行的,因为它更加关注应用的事件处理,以及展示;而非应用的实现细节,以及状态变化。更加符合我们对于单元测试的原本诉求,以及最佳实践。
√ Choose the test environment that will be used for testing » jsdom (browser-like) √ Do you want Jest to add coverage reports? ... yes √ Which provider should be used to instrument code for coverage? » babel √ Automatically clear mock calls, instances and results before every te...
it('message is of type string',()=>{letspy=jest.spyOn(console,'error')cmp=createCmp({message:1})expect(spy).toBeCalledWith(expect.stringContaining('[Vue warn]: Invalid prop'))spy.mockReset()// or mockRestore() to completely remove the mock// 或者用 mockRestore() 来完全移除mock数据}...
.toThrow() .toThrowError(error) Mock functions Mock functions are also known as "spies", because they let you spy on the behavior of a function that is called indirectly by some other code, rather than just testing the output. You can create a mock function with jest.fn(). mockFn.moc...
unbound-methodEnforce unbound methods are called with their expected scope In order to use the rules powered by TypeScript type-checking, you must be using@typescript-eslint/parser& adjust your eslint config as outlinedhere. Note that unlike the type-checking rules in@typescript-eslint/eslint...