噶如何测试这个角码？

Question

$scope.login = function(){ 

    api.getToken($scope.username, $scope.password, function(){ 

    $scope.loggedIn = true; 

    }); 
}; 

it('should work', function(){ 
    scope.login(); 
    expect(scope.loggedIn).toBe(true); // fails 
}); 

我该如何测试这个功能？对scope.loggedIn的测试失败，因为它仍然是false。

Answer 1

如果你的API使得HTTP请求，你可以用$ httpBackend嘲笑HTTP调用 https://docs.angularjs.org/api/ngMock/service/ $ httpBackend

是这样的：

var $httpBackend; 

beforeEach(inject(function($injector){ 
    $httpBackend = $injector.get('$httpBackend'); 
} 

it('should work', function(){ 

    $httpBackend.expect('POST', 'http://my-api/login').respond(200, { status: "ok" }); 
    scope.login(); 
    $httpBackend.flush(); 
    expect(scope.loggedIn).toBe(true); // fails 
});