I write tests for angular app using karma, is any way i can check not flushed requests before $httpBacked.flush()? i need this because i dont know is request sent or not and if no, $httpBacked.flush() cause exception.
i need something like this:
it('should', function() {
if($httpBackend.isRequestsPresent()) {
$httpBackend.flush();
}
})
You can use
$httpBackend.verifyNoOutstandingExpectation()
$httpBackend.verifyNoOutstandingRequest()
to check on the requests send/not or expectations met/not met sent.
See also here.
Related
I am writing end-to-end tests for my AngularJS-based application using Protractor. Some cases require using mocks to test - for example, a network connection issue. If an AJAX request to server fails, the user must see a warning message.
My mocks are registered in the application as services. I want them to be accessible to the tests to write something like this:
var proxy;
beforeEach(function() { proxy = getProxyMock(); });
it("When network is OK, request succeeds", function(done) {
proxy.networkAvailable = true;
element(by.id('loginButton')).click().then(function() {
expect(element(by.id('error')).count()).toEqual(0);
done();
});
});
it("When network is faulty, message is displayed", function(done) {
proxy.networkAvailable = false;
element(by.id('loginButton')).click().then(function() {
expect(element(by.id('error')).count()).toEqual(1);
done();
});
});
How do I implement the getProxyMock function to pass an object from the application to the test? I can store proxies in the window object of the app, but still do not know how to access it.
After some reading and understanding the testing process a bit better, it turned to be impossible. The tests are executed in NodeJS, and the frontend code in a browser - Javascript object instances cannot be truly shared between two different processes.
However, there is a workaround: you can execute a script inside browser.
First, your frontend code must provide some sort of service locator, like this:
angular.module('myModule', [])
.service('proxy', NetworkProxy)
.run(function(proxy) {
window.MY_SERVICES = {
proxy: proxy,
};
});
Then, the test goes like this:
it("Testing the script", function(done) {
browser.executeScript(function() {
window.MY_SERVICES.proxy.networkAvailable = false;
});
element(by.id('loginButton')).click().then(function() {
expect(element.all(by.id('error')).count()).toEqual(1);
done();
});
});
Please note that when you use executeScript, the function is serialized to be sent to browser for execution. This puts some limitations worth keeping in mind: if your script function returns a value, it is a clone of the original object from browser. Updating the returned value will not modify the original! For the same reason, you cannot use closures in the function.
I am new to angular and protractor.We use protractor for functional testing and integrated with jenkins.
Problem
In some screens we use ng-toast to show toaster messages(mainly for server response messages like 'save filed' etc.).But protractor could not catch these, since it will wait for all angular timeouts(including toaster timeout) to complete.Showing error:
Timed out waiting for Protractor to synchronize with the page after 11 seconds.
I tried to set ignoreSynchronization too.
How to tackle this. I am really stuck on this..
After a long search on google I got answer.We can make use of promises with browser.waitin test cases those needs to wait for toaster messages.
.....
browser.wait(function() {
var deferred = protractor.promise.defer();
getToaster().then(function(){
deferred.fulfill(true);
expect(getToaster().isDisplayed()).toBe(true);//and other assertions
});
return deferred.promise;
});
.....
This is well described in this blog
Also more details about protractor.promise can be found here
Alternatively I did it in another way as:
...
browser.manage().timeouts().implicitlyWait(10000);//set timeout for element
expect(toaster.getToaster().isDisplayed()).toBe(true);
browser.manage().timeouts().implicitlyWait(1);//reset
....
But in a protractor way of doing is browser.wait with ExpectedCondition which is described in the protractor api including custom conditions.I am currently using this explicit wait approach.
All my UNIT tests, not E2E tests, that do an explicit rootScope.digest() or httpBackend.flush() to flush the asynchronous callback, experience the error:
How to avoid the 'Error: Unexpected request: GET'
No more request expected
I reckon it is because httpBackend calls the ui-router template. I don't know why it wants to do so. I'm not asking for this. I only want it to call my mocked json service.
This error forces me to have the following statement in each it() block:
$httpBackend.whenGET(/\.html$/).respond('');
There must be a neater way.
Specially if the test has no use of the $httpBackend in the first place:
it('should return the list of searched users', function() {
// Always use this statement so as to avoid the error from the $http service making a request to the application main page
$httpBackend.whenGET(/\.html$/).respond('');
var users = null;
UserService.search('TOTO', 1, 10, 'asc', function(data) {
users = data.content;
});
$rootScope.$digest();
expect(users).toEqual(RESTService.allUsers.content);
});
The test passes but it looks hackish. Or noobish :-)
EDIT: Another test:
it('should return the list of users', function () {
// Always use this statement so as to avoid the error from the $http service making a request to the application main page
$httpBackend.whenGET(/\.html$/).respond('');
// Create a mock request and response
$httpBackend.expectGET(ENV.NITRO_PROJECT_REST_URL + '/users/1').respond(mockedUser);
// Exercise the service
var user = null;
RESTService.User.get({userId: 1}).$promise.then(function(data) {
user = data;
});
// Synchronise
$httpBackend.flush();
// Check for the callback data
expect(user.firstname).toEqual(mockedUser.firstname);
expect(user.lastname).toEqual(mockedUser.lastname);
});
This is obviously by design, your tests should be checking that HTTP calls are being made and that they're requesting the correct URL. Instead of checking whether requests are made to /\.html$/ why not instead check whether requests are made to the correct endpoints? Whether that be a directives partial or an API call.
If you insist on throwing away what could be a useful test, you could move your whenGET() to a beforeEach().
I'm trying to test some services that receive some modifications. Some of them are using $http service, and only one of them is populating an unknown - and a not understandable - issue.
Let me expose.
it('must reject the promise with an explanation if the required path is not found', function() {
$httpBackend.whenGET('http://localhost/testok').respond(function () {
return [200, mockedRemoteResponse, {}];
});
var promise = apiDataExtractor.extractRemoteData('ok', 'toto');
$httpBackend.flush();
});
Running this code throught Jasmine, we got this:
I do not have ANY idea of what appends. I try to change injection order, try to erase and rewrite my test, there is something here I'm missing.
Can anyone help?
The error you are seeing is probably due to a call to $http.get with undefined as the url (you might have forgotten to provide parameters to $http.get() inside apiDataExtractor.extractRemoteData?)
Try debugging your code and see what are the parameters you are giving the $http.get method.
I have a Jasmine test that is coded like this:
it ("should send correct message to server to get data, and correctly set up scope when receiving it", function(){
$httpBackend.when('GET', 'https://localhost:44300/api/projectconfiguration/12').respond(fakedDtoBase);
$routeParams.projectId=fakeId; // user asks for editing project
scope.$apply(function(){
var controller=controllerToTest(); // so controller gets data when it is created
});
expect(scope.projectData).toEqual(fakedDtoBase);
});
and it kind of works, but I get the error:
Error: Unexpected request: GET views/core/main/main.html
No more request expected
at $httpBackend (C:/SVN/src/ClientApp/client/bower_components/angular-mocks/angular-mocks.js:1207:9)
at sendReq (C:/SVN/src/ClientApp/client/bower_components/angular/angular.js:7800:9)
at $http.serverRequest (C:/SVN/src/ClientApp/client/bower_components/angular/angular.js:7534:16)
(more stack trace)....
I do realise that I can mock every other call. But let's say I do not care what else my test wants to load as it may call few other things.
How I can make sure that every other requests just "happen silently", maybe offering a single dummy response for everything else?
Your test fails because a request is made which you haven't specified.
Try to add:
$httpBackend.when('GET', 'views/core/main/main.html').respond(fakedMainResponse);
Of course you should also define fakedMainResponse.
Please take a look also at the documentation (section Request Expectations vs Backend Definitions) which says:
Request expectations provide a way to make assertions about requests
made by the application and to define responses for those requests.
The test will fail if the expected requests are not made or they are
made in the wrong order.
The second paramete of $httpBackend.when is actually a RegExp. So if you provide a RegExp that will match all other requests it should work.
For those who are using the httpBackend to mock http calls in EndToEnd tests or just mocking the entire http calls for the application the solution is to add the following code in the app config section (change the regexp according your template's location):
$httpBackend.whenGET(/^\/templates\//).passThrough();
Reference: https://docs.angularjs.org/api/ngMockE2E/service/$httpBackend
Tested with angularjs 1.4 to fix similar problem while integrating ui-router
I think it's also important to notice that if you have a $digest(), your expectation should follow the $digest, like so:
_$rootScope_.$digest();
$httpBackend.when('GET', 'views/core/main/main.html').respond(fakedMainResponse);
// ...
$httpBackend.flush(); // And remember to flush at the end
you only need to add setTimeout and done property to your flush to prevent it
it('should get data in callback funcion', function (done) {
$httpBackend.whenGET(/\/my-endpoint/).respond(mockDataResponse);
apiFactory.getCurrencyFormat('en', function (res, err) {
expect(res.a).to.deep.equal(generalMock.a);
expect(res.b).to.deep.equal(generalMock.b);
});
setTimeout(function () {
done();
$httpBackend.flush();
}, 200);
});