在我的控制器中,我有:
$scope.index = function() {
CompanyService.initialized.then(function() {
var company_id = CompanyService.getCompany()._id;
LocationService.list(company_id, $routeParams.location_parent_id).then(function(response) {
if(response.data.status === 'ok') {
$scope.locations = response.data.locations;
$scope.current_location = response.data.location || null;
}
});
});
}
所以它应该得到LocationService
列表并且测试如下:
it('should get locations', function() {
$httpBackend.when('GET', '/api/v1/location/list').respond({status: 'ok', locations: ['loc1', 'loc2']})
$scope.index();
expect($scope.locations.length).toEqual(2);
然而,这种情况从未发生过,因为CompanyService
具有在单元测试中永远无法解决的承诺。我如何模拟返回的CompanyService
承诺或绕过它?
答案 0 :(得分:5)
只需使用Jasmine中的createSpyObj
方法模拟调用:
describe('one test', function(){
var deferred, CompanyService, $scope;
beforeEach(inject(function ($q, $rootScope, $controller) {
params = {
$scope: $rootScope.$new(),
CompanyService = jasmine.createSpyObj('CompanyService', ['initialized'])
}
params.CompanyService.initialized.andCallFake(function () {
deferred = $q.defer();
return deferred.promise; //will fake to return a promise, in order to reach it inside the test
});
$controller('YourController', params);
});
it('my test', function(){
deferred.resolve({}); //empty object returned for the sample but you can set what you need to be returned
$scope.$digest(); //important in order to resolve the promise
//at this time, the promise is resolved! so your logic to test can be placed here
});
});
答案 1 :(得分:0)
简短回答:致电$scope.$apply();
后添加$scope.$index();
。
答案很长:你的问题可能是因为$ q宣传了promises解决方案。实际上,解析仅在执行$ digest时发生。我不知道为什么在测试期间没有执行$ digest,而是在常规使用期间,但是在Angular文档中建议使用此解决方案:https://docs.angularjs.org/api/ng/service/ $ q。
你可以在你的情况下直接使用$scope.$digest();
而不是$scope.$apply();
,因为$ apply只是在调用$ digest之前运行传递给它的任何函数的包装器。