问题
I'm new to jasmine framework. I've gone through some tutorials and learned and started writing unit tests. 'facing one issue here is the description. I have a controller where i can invoke a service call to get the data. See the code below.
$scope.getEmpInfo = function() {
EmpService.getInfo($scope.empid)
.then(function(data) {
$scope.empData = data;
$scope.populateEmpData($scope.empData);
}, function(reason) {
//do nothing
}
}
Now, i want to write a unit test for the above method. Im able to make a spy on serice using promise but i wasnt able to spy $scope.populateEmpData()
. here is my test case.
describe('Emp data', function() {
var d, scope;
beforeEach(function() {
module("emp");
module("emo.info");
});
describe('empcontroller', function() {
beforeEach(inject(function($q,_EmpService_, $controller,$rootScope){
d = $q.defer();
empService = _EmpService_;
spyOn(empService,"getInfo").and.returnValue(d.promise);
scope = $rootScope.$new();
empCtrl = $controller("empController", {
$scope: scope,
});
}));
it('should get the Employee information ', function() {
scope.getEmpInfo();
spyOn(scope,'populateEmpData');
expect(EmpService.getInfo).toHaveBeenCalled();
//Here im getting the error.
expect(scope.populateEmpData).toHaveBeenCalled();
});
});
});
Please help resolve this issue. Thanks in advance.
回答1:
It's because you are not resolving promise. You will have to make change in spyOn.
- spyOn(empService,"getInfo").and.callFake(function() {
return {
then : function(success, error) {
success();
}
} }
Now, it will go into the success callback and will try to call $scope.populateEmpData();
回答2:
You're never resolving your promise. And you need to call $scope.$apply().
Why is this necessary? Because any promises made with the $q service to be resolved/rejected are processed upon each run of angular’s digest cycle. Conceptually, the call to .resolve changes the state of the promise and adds it to a queue. Each time angular’s digest cycle runs, any outstanding promises will be processed and removed from the queue. Unit Testing with $q Promises in AngularJS
Check it out above link it will help you.
来源:https://stackoverflow.com/questions/43898588/jasmine-unit-test-for-angular-service-in-controller