Karma (AKA Testacular) rely on ng-app directive? - angularjs

After spending a day and a half of code battles, i've realized that the e2e tests hanged because i've bootstraped manually and not using ng-app directive
first, FYI.
second, any idea why? How can it be fixed?
thanks
Lior
--
EDIT: here're two plunks that show it, using phone-cat tutorial example:
works in both browser and e2e:
http://plnkr.co/edit/AfLsug1LRi0euKf7TWJa
works interactively in browser, doesnt work in e2e runner:
http://plnkr.co/edit/20OeZ5eV2ZbzgS1qDYfr

Scenario runner appears to need to get a hold of ng-app (for the $injector). I adapted the fix identified here by Vojta Jína and it worked for me.
$(function() {
var myApp = $('#appId'); // Use whatever selector is appropriate here.
angular.bootstrap(myApp, [modules]); // modules is optional - see http://docs.angularjs.org/api/angular.bootstrap
myApp.addClass('ng-app'); // Adds the required ng-app
});
In addition, you may need to put a pause or wait in your beforeAll to allow enough time for manual bootstrapping to complete, e.g.,
beforeEach(function() {
browser().navigateTo('../../index.html');
pause();
});
This fix works but it's not that satisfactory imho. Is there any way to get rid of the pause/wait?

Related

Can i access the ng-app value in a protractor test?

I simplified the code i need to test to this:
<html ng-app="home" ng-strict-di=""><head>....
And i am running some protractor tests, i want to access the value of ng-app so i can compare and see which app is running in each page.
I have tried
var appName = element(by.xpath('/html/#ng-app'))
but it is not returning a usable promise or text i can compare with
appName.getText().then(function(name) {
expect(name).toBe('home')
});
But protractor complains:
InvalidSelectorError: invalid selector: The result of the xpath expression "/html/#ng-app" is: [object Attr]. It should be an element.
So i'm a bit baffled as how can i access my angular app name from protractor to test for app running independently of localization of labels.
Any insight into this enigma?
And it seems like magically, when you order your thoughts to formulate the question, the answer comes to you.
the trick is to get the html as element
var appNameHtml = element(by.xpath('/html'))
and then, in the test, get the ng-app attribute and use it:
appNameHtml.getAttribute('ng-app').then(function(value) {
expect(value).toBe('home');
});
And bingo, you can extract the app name.
Maybe this is a very basic question, but it was driving me insane :)
your answer will suffice I guess in this case. But just wanted to highlight a more generic approach in case ng-app may reside not only on html element.
var elementWithNgApp = element(by.css('*[ng-app]'))
And then wanted to add one more thing. You need not resolve the promise of getAttribute to do an expect on its value. Jasmine resolves the promise for you. You can have something like this
expect(elementWithNgApp.getAttribute('ng-app')).toBe('home');

dealing with systemjs load time and sequence - there must be a better way

I have a situation using system.js with an angular application where I need to be able to include specific System.import(f) statements on a per-page basis, but it was imperative that they all be included before angular finishes bootstrapping and loading up its module.
I spent a long time on this problem and eventually this is the workaround I devised;
in my config.js, I am doing this...
config.js
// .... configuration ... //
Promise.all([
System.import('jquery'),
System.import('angular'),
System.import('angular.ng'),
System.import('bootstrap')
]).then(function() {
$(document).on('angular', function() {
angular.bootstrap(document, ['module-name']); $('body').removeClass('cloak');
});
});
Then I have a css class named .cloak. I tried ng-cloak but found it wasn't doing the job (I suspect because I'm deferring the angular bootstrapping)
.cloak { visibility: hidden; }
then on my individual page, I use this sort of code to shoe-horn my page-specific imports and finalize the process.
<!-- Load SystemJS -->
<script src="assets/js/system.js"></script>
<script src="config.js"></script>
<script>
System.import('app/main').then(function (e) {
Promise.all([
System.import('app/controllers/index'),
System.import('app/controllers/read'),
System.import('app/controllers/edit/article'),
System.import('scripts/lib/init')
]).then(function (m) {
$(document).trigger('angular');
});
});
</script>
So that's the basic idea; I don't allow angular to finish wiring up its module until everything has been imported through system.js. At present, this seems to work fine.
My problem is that I'm not a very good programmer, nor am I very clever. This seems like an extremely standard, normal problem that comes with the way system.js is designed and it occurs to me that there has to be a better, built in solution that I'm missing or haven't found.
Has anyone else dealt with this before that can offer some advice?
The reason I need to defer the module wiring is because I've got various angular controllers and models and such and I don't want them all to load on every page. (I mean, trimming down the scripts to only the ones needed at the moment is one of the points of a module loader, aside dependency resolution).
Trying to use the ng-app directive was constantly causing trouble - as angular would try to load before everything was finished and loaded in, so it had trouble finding things like certain controllers and the like on certain pages.
The biggest reason I need an alternative is that this method doesn't work well for minifying typescript.
This is an extremely standard issue with ng-cloak in general. Perhaps a better way has come around, but pretty much since I started working with angular I've just defined ng-cloak in the header of my index.html file like this:
<style>
[ng\:cloak],[ng-cloak],[data-ng-cloak],[x-ng-cloak],.ng-cloak,.x-ng-cloak {
display: none !important;
}
</style>
and added class="ng-cloak" to the body tag of my page. It works great and when Angular finishes loading it's internal ng-cloak styles effectively overwrite mine.
It seems like moving the inline script basically as is, to an external file, would still allow it to run exactly as you have it and then minification and such would be fine.
It also sounds like you're not creating a SPA here, since if I understand you correctly, you're calling config.jss from each page. You may want to reconsider that and go with a SPA. You will likely end up loading everything up front, but you'll load it all only once.

Non-angular page opened with click - angular not defined using ignoreSynchronization or waiting for Angular without

After a lot of research, and tinkering, I can't seem to actually get my Protractor test to do anything else other than have an Angular related error, even though I am using browser to avoid Angular being detected at all.
The test involves an Angular app, opening a dropdown in it, and clicking on the link for the console; the console opens a non-Angular admin page in a separate window.
So based on the many informative SO posts I found, I first used this...
browser.driver.getAllWindowHandles().then(function(handles) {
browser.driver.switchTo().window(handles[1]).then(function() {
//expect for new window here
});
});
Which appeared to work, as I could get to the window through repl pretty easily.
The issue is when either of the following were added...
browser.driver.getAllWindowHandles().then(function(handles) {
browser.driver.switchTo().window(handles[1]).then(function() {
expect(browser.getLocationAbsUrl()).toContain('/console/login.jsp');
expect(browser.driver.findElement(By.css('th.login')).getText()).toEqual('Login');
});
});
One expect check the URL and the other checks for the header element on the page, which is a table header. When I run this, I get the following:
Error while waiting for Protractor to sync with the page: "angular could not be found on the window"
When I decide to use browser.ignoreSynchronization = true, both in the function, or in a beforeEach, with or without a following afterEach setting it to false, I get the following:
JavascriptError: angular is not defined
I can't seem to get any "useful" errors to help me debug it, and trying it in repl does not help, as I get the same issue.
To be comprehensive, trying my URL expect without getting the second window will give me the root, and the other will fail.
Just doing one or the other will cause the same problem.
Changing to regular syntax (element(by.css...)) does not change things.
So much for my first question...
It appears that my use of browser.getLocationAbsUrl() is meant to be used for an Angular page, and was causing my issue...
Essentially, even though I believed I was using pure Webdriver calls, that call still required Angular on the page to work...
As stated in another post, the use of browser.driver.getCurrentUrl() is a non-Angular call using Webdriver, and fixed the problem. Thus, the final code is the following...
browser.sleep(1000); //to wait for the page to load
browser.driver.getAllWindowHandles().then(function(handles) {
browser.driver.switchTo().window(handles[1]).then(function() {
expect(browser.driver.getCurrentUrl()).toContain('/console/login.jsp');
expect(browser.driver.findElement(By.css('th.login')).getText()).toEqual('Login');
});
});
This works without setting ignoreSynchronization, BTW.
I realized it would probably be something relatively simple to fix it, just didn't expect I'd get it that quickly (I intended on submitting the question last night, but posted it this morning instead).
In any case, I hope this will at least be a good reference for anyone else facing the same issue.
Seems like getLocationAbsUrl is angular abs url.
Try using the native driver getCurrentUrl instead.
-- expect(browser.getLocationAbsUrl()).toContain('/console/login.jsp');
++ expect(browser.driver.getCurrentUrl() ...

Some of your tests did a full page reload - error when running Jasmine tests

I'm running into an issue where when I run my tests on Jasmine, I get this error below. The problem is, it seems to happen when I try to execute a certain amount of tests. It doesn't seem to be tied to a particular test, as if I comment out some, the tests pass. If I uncomment some tests, the error appears. If I comment out ones that were uncommented before, they all pass again. (ie if I have red, green, blue and orange test and it fails, I comment out orange and blue it passes, then I uncomment blue and orange it fails again, but if I comment out red and green it passes again).
Chrome 41.0.2272 (Mac OS X 10.10.1) ERROR Some of your tests did a
full page reload! Chrome 41.0.2272 (Mac OS X 10.10.1): Executed 16 of
29 (1 FAILED) ERROR (0.108 secs / 0.092 secs)
I'm stumped as to what is going on. The more tests I add, that's when this becomes an issue. Has anyone encountered this before? I have no idea what could be causing it, as nothing in any of my tests do any kind of redirection, and they all pass universally on another persons machine.
In my case the problem was that in my source code I had code directly setting the href on the location object, like window.location.href = 'somewhere';
In my specs I set up a onbeforeunload listener that just returns a string instead of allowing the redirect to take place:
beforeAll(() => {
window.onbeforeunload = () => 'Oh no!';
});
I suppose you are using window.location somewhere in your targeted code. In order to pass it just create a spy for the window.onbeforeunload
Example:
window.onbeforeunload = jasmine.createSpy();
Or even better use $window instead, and this will not happen.
Make sure that your tests are properly isolating all modules under test with mocks/spies. The behavior you are seeing says to me that your tests are not truly running in isolation - they are changing some state somewhere that will trigger a reload.
I recently encountered this error with Karma 0.13.12. I upgraded to Karma 0.13.14 and my tests work again. The problem for me (and probably also for #mqklin) was related to https://github.com/karma-runner/karma/issues/1656 and https://github.com/jasmine/jasmine/issues/945.
There are many ways this error can happen.
If your component has a form element, this might be the cause.
Whenever a button on the form is clicked, this error can happen, even tho your component contains no navigation logic.
What worked for me was upgrading Karma from 1.4.0 to 1.4.1 and changing the maximumSpecCallbackDepth in my jasmine.js file from 20 to 100.
creating a spy on the function which has the window.location / reload fixed the issue for me
Hope you have used window.location = "some url" in your code;
Faced similar problem, and solved by using the below changes.
Replaced window.location in the code with,
window.location.assign("some url");
Do the below in unit test:
spyOn(window.location, "assign").and.callFake(() => {
// Dummy assign call - so that your actual call will be faked and the reload will not happen.
});
You also need to make sure that modules are not being loaded twice. In my case, I had an AngularJS module file -e.g., auth.controller.js which contents were already bundled in a core.js file. Once I excluded the bundled files on karma, the error disappeared.
Try to reduce amount of describe sections or completely remove them. I don't know why, but it works for me.
I was using setTimeout(() => window.location.replace('/'), 10);
I used below code in my unit test and it worked for me.
spyOn(global, 'setTimeout');
In case it was ng-submit callback, which doesn't call "event.preventDefault()" and the browser reloads page. Mocking $location doesn't help in that situation.
According to angularjs documentation you should inject the $window module to be able to solve the testability issue you get. If you really want to do a full page refresh while routing, which will reload the whole application. But anyway...
So for example in component
.controller('ExampleController', ['$scope', '$window', function($scope, $window**)
{
$scope.doRerouteWithPageReload = function() {
return this.$window.location.href = "/myUrl";
};
And then in your test-file you import $window to the test-controller your way, then where you assign spies you can do something like this:
$window = { location: {href: jasmine.createSpy() };
And then the actual test is something like this:
expect($window.location.href).toBe("/myUrl");
Angularjs documentation for reading more about $window.
It will solve this Karma redirect error!
var html = '<script type="text/javascript">';
html += 'window.location = "' + urlToRedirect +'"';
html += '</script>';
$( '.wrapper' ).append( html );

How can I see what karma sees when I use browser().navigateTo()

I am just getting started with karma, and although it seems that everything is hooked up properly and my unit tests are being run as expected, I can't get my end to end tests to find any elements.
When I go to the debug page, I can see a very brief flash of my application, which says to me that my proxy and config in general is hooked up properly, but when I run
describe('my app', function() {
beforeEach(function(){
browser().navigateTo('/');
});
it('should display the home page', function() {
expect(element('title').text()).toEqual('my title');
});
});
it never finds an element, no matter the selector I put in.
My question, though, is... is there some way that I can see what it is seeing? Can I get karma to dump the full text of the html response? If I could do that, I could at least see what it is getting back. As it stands, I am getting no debugging information at all and it is kind of frustrating.
Feel free to ask for more information if I can make it easier to answer the question. Thank you for any help you can provide.
You can use pause() inside your test to pause the execution, then you can resume from the UI.
The docs for pause() are here.
You can also use sleep(seconds) to make a timed pause, if you want to auto resume.

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