从Mocha中的afterEach挂钩中检测测试失败

Question

I'm trying to create an afterEach hook with logic that should only fire if the previous test failed. For example:

it("some_test1", function(){
  // something that could fail
})

it("some_test2", function(){
  // something that could fail
})

afterEach(function(){
  if (some_test_failed) {
    // do something to respond to the failing test
  } else {
    // do nothing and continue to next test
  }
})

However, I have no known way of detecting if a test failed from within the afterEach hook. Is there some sort of event listener I can attach to mocha? Maybe something like this:

myTests.on("error", function(){ /* ... */ })

Answer 1

You can use this.currentTest.state (not sure when this was introduced):

afterEach(function() {
  if (this.currentTest.state === 'failed') {
    // ...
  }
});

Answer 2

You can do like the following

describe('something', function(){
  var ok = true;
  it('should one', function(){
    ok = true;
  })

  it('should two', function(){
    // say the test fails here
    ok = false;
  })

  afterEach(function(){
    if (!ok) this.test.error(new Error('something went wrong'));
  })
})