我们正在对我们的 Controller 进行单元测试。我们已经成功地模拟了对 REST 服务层的调用，并验证了它确实被给定的数据调用了。然而，现在我们想在我们的 Controller 中测试 then promise 的执行是否改变了 location.path:
Controller :
(function () {
app.controller('registerController', ['$scope', '$location', '$ourRestWrapper', function ($scope, $location, $ourRestWrapper) {
$scope.submitReg = function(){
// test will execute this
var promise = $ourRestWrapper.post('user/registration', $scope.register);
promise.then(function(response) {
console.log("success!"); // test never hits here
$location.path("/");
},
function(error) {
console.log("error!"); // test never hits here
$location.path("/error");
}
);
};
$ourRestWrapper.post(url,data) 只是包装 Restangular.all(url).post(data)..
我们的测试:
(function () {
describe("controller: registerController", function() {
var scope, location, restMock, controller, q, deferred;
beforeEach(module("ourModule"));
beforeEach(function() {
restMock = {
post: function(url, model) {
console.log("deferring...");
deferred = q.defer();
return deferred.promise;
}
};
});
// init controller for test
beforeEach(inject(function($controller, $rootScope, $ourRestWrapper, $location, $q){
scope = $rootScope.$new();
location = $location;
q = $q;
controller = $controller('registerController', {
$scope: scope, $location: location, $ourRestWrapper: restMock});
}));
it('should call REST layer with registration request', function() {
scope.register = {data:'test'};
spyOn(restMock, 'post').andCallThrough();
scope.submitReg();
deferred.resolve();
// successfull
expect(restMock.post).toHaveBeenCalledWith('user/registration',scope.register);
expect(restMock.post.calls.length).toEqual(1);
// fail: Expected '' to be '/'.
expect(location.path()).toBe('/');
});
在我们的控制台中，我们看到“deferring...”并且前两个期望成功。为什么它不调用 then block (即设置位置)？
最佳答案
缓存$rootscope当你从注入(inject)器中得到它并调用 $rootScope.$apply() 时对象在 deferred.resolve() 之后立即.
关于javascript - AngularJs 单元测试 - 模拟 promise 不执行 "then"，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18916348/