console.warn('message3'); // Will be displayed (not mocked anymore) expect(consoleWarnMock).toHaveBeenCalledTimes(0); // Not counting anymore expect(consoleWarnMock.mock.calls).toEqual([]); //expect(console.warn.mock.calls).toEqual([]); // Crash 你也可以这样写:const...
toThrow - 要测试的特定函数会在调用时抛出一个错误 .resolves 和 .rejects - 用来测试 promise .toHaveBeenCalled() - 用来判断一个函数是否被调用过 .toHaveBeenCalledTimes(number) - 判断函数被调用过几次 toThrow 要测试的特定函数会在调用时抛出一个错误 ...
I'm trying to test a method to ensure all API calls are correctly done. However only the first one seem to be log and available infetch.mock.callsandtoHaveBeenCalledTimes: Expected mock function to have been called three times, but it was called one time. Error ● Outcall Service › ...
.toHaveBeenCalledTimes(number) .toHaveBeenCalledWith(arg1, arg2, …) .toHaveBeenLastCalledWith(arg1, arg2, …) .toHaveBeenNthCalledWith(nthCall, arg1, arg2, …) .toHaveReturned() .toHaveReturnedTimes(number) .toHaveReturnedWith(value) .toHaveLastReturnedWith(value) .toHaveNthReturnedWith...
.toHaveBeenCalled() - 用来判断一个函数是否被调用过 .toHaveBeenCalled() 也有个别名是.toBeCalled(),用来判断一个函数是否被调用过。 describe('drinkAll', () => { test('drinks something lemon-flavored', () => { const drink = jest.fn(); drinkAll(drink, 'lemon'); expect(drink).toHave...
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', () =...
.spyOn().mockImplementation()to replace a spied-on function’s implementation For the spy example, note that the spy doesn’t replace the implementation ofdoSomething, as we can see from the console output: jestPASS src/to-be-called.test.js● Consoleconsole.log src/to-be-called.test.js:...
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 ...
但测试失败并显示消息 Expected two assertions to be called but received zero assertion calls.。日志消息“timeout fired”没有出现在控制台中。请有人可以解释为什么它失败了吗?原文由 Damian Helme 发布,翻译遵循 CC BY-SA 4.0 许可协议 javascriptjestjs...
myModule.myFunction();expect(spy).toHaveBeenCalled(); }); AI代码助手复制代码 使用jest.fn()函数: jest.fn()函数允许你创建一个匿名函数,这个函数可以用作模拟。你可以使用这个函数来模拟任何你需要的功能。例如: importmyModulefrom'./myModule';test('myModule.myFunction should be called',() =>{ ...