这对我很有效

it("expects to have failed", async () => {
  let getBadResults = async () => {
    await failingAsyncTest()
  }
  expect(getBadResults()).reject.toMatch('foo')
  // or in my case
  expect(getBadResults()).reject.toMatchObject({ message: 'foo' })
})

你可以这样测试你的async函数:

it('should test async errors', async () =>  {        
    await expect(failingAsyncTest())
    .rejects
    .toThrow('I should fail');
});

'I should fail'字符串将匹配抛出的错误的任何部分。

如果你想在测试用例中使用try/catch方法，你可以像下面这样做。

test("some test case name with success", async () => {
 let response = null;
 let failure = null;
  // Before calling the method, make sure someAsyncFunction should be succeeded
 try {
  response = await someAsyncFunction();
 } catch(err) {
  error = err;
 }
expect(response).toEqual(SOME_MOCK_RESPONSE)
expect(error).toBeNull();
})

test("some test case name with failure", async () => {
 let response = null;
 let error = null;
 // Before calling the method, make sure someAsyncFunction should throw some error by mocking in proper way
 try {
  response = await someAsyncFunction();
 } catch(err) {
  error = err;
 }
expect(response).toBeNull();
expect(error).toEqual(YOUR_MOCK_ERROR)
})

编辑:

由于我给出的解决方案没有利用内置的笑话测试抛出功能的优势，请遵循@Lisandro https://stackoverflow.com/a/47887098/8988448建议的其他解决方案

it('should test async errors', async () =>  {        
    await expect(failingAsyncTest())
    .rejects
    .toThrow('I should fail');
});

我想在此基础上补充一点，说明您正在测试的函数必须抛出一个实际的Error对象抛出新的Error(…)。Jest似乎不能识别你是否抛出了一个像throw ' an error occurred!'这样的表达式。

await expect(async () => { 
    await someAsyncFunction(someParams); 
}).rejects.toThrowError("Some error message");

我们必须将代码包装在函数中以捕获错误。在这里，我们期望someAsyncFunction抛出的错误消息应该等于“一些错误消息”。我们也可以调用异常处理程序

await expect(async () => { 
    await someAsyncFunction(someParams); 
}).rejects.toThrowError(new InvalidArgumentError("Some error message"));

阅读更多信息https://jestjs.io/docs/expect#tothrowerror

我一直在测试Firebase的云功能，这是我得出的结论:

test("It should test async on failing cloud functions calls", async () => {
    await expect(async ()=> {
        await failingCloudFunction(params)
    })
    .rejects
    .toThrow("Invalid type"); // This is the value for my specific error
  });

这是建立在丽桑德罗的答案之上的。