Using loops in Jasmine (with injected service)

问题

I'm using jasmine 2.3.
Following this: http://tosbourn.com/using-loops-in-jasmine/ I placed a FOR loop directly in the 'describe' nested function

describe('service Profile', function() {
  var ProfileService;
  beforeEach(function() {
    module('app.services.profile');
    inject(function(_ProfileService_) {
      ProfileService = _ProfileService_;
    });
  });
  describe('method setProfile', function() {
    function setProfileTest(key) {
      it('should set the object profile', function() {
        expect(ProfileService.profile[key]).toBeUndefined();
      });
    }

    for (var key in ProfileService.profile) {
      if (ProfileService.profile.hasOwnProperty(key)) {
        setProfileTest(key);
      }
    }
  });
});

The problem is that outside the 'it' function, ProfileService still undefined.

回答1:

Since you need ProfileService to be injected, the loop must run after the beforeEach block.

I can see two solutions. Either:

Use a hard-coded list of profiles and iterate through them. Eg- instead of

 for (var key in ProfileService.profile) {

do

for (var key in ['profile1', 'profile2'...) {

or load the profiles from an external file.

OR

Put the for loop inside of the it test:

it('should set the object profile', function() {
  for (var key in ProfileService.profile) {
    if (ProfileService.profile.hasOwnProperty(key)) {
      expect(ProfileService.profile[key]).toBeUndefined();
    }
  }
});

回答2:

The describe block creates the it blocks, then the beforeEach runs, then the it blocks, so, yes, ProfileService won't be defined when the describe block is setting up the it blocks if you define it in a beforeEach. However, beforeEach is not the only place you can use inject. What happens if you try something like:

describe('method setProfile',
    inject(
        function(ProfileService) {
             //your code here
        }
    )
)

来源：https://stackoverflow.com/questions/39534436/using-loops-in-jasmine-with-injected-service