Is there a recommended method for mocking the $resource object?
I've looked online, but all my attempts ended with KARMA testing. It's not what I'm looking for.
I'm thinking of creating a fake object so that I can easily switch between different $resource implementations in my application.
Thank you.
If you're looking to achieve this, consider leveraging the $provide feature in AngularJS.
angular.module(“MyApp”,[])
.config([“$provide”,function($provide){
$provide.decorator(“$resource”,function($delegate, myReplacementResource){
//$delegate represents the original $resource that you want to modify
//You can either inject a replacement resource already registered as a factory (recommended), or create it here.
return myReplacementResource;
});
}])
There is a method presented by dskh for achieving this task. An alternative approach, which may be considered easier, involves utilizing angular-mocks.js within your application:
app.run(function($httpBackend) {
$httpBackend.whenPOST('/string/match/url').respond(function (method, url, data) {
return [{some:data}];
});
$httpBackend.whenGET(/regexpmatch/).respond(function (method, url, data) {
return {some:{other:data}};
});
// allow other requests to pass through
$httpBackend.whenPOST(/.*/).passThrough();
$httpBackend.whenGET(/.*/).passThrough();
$httpBackend.whenDELETE(/.*/).passThrough();
$httpBackend.whenJSONP(/.*/).passThrough();
$httpBackend.whenPUT(/.*/).passThrough();
});
This tutorial showcases my approach to mocking resource objects in an Angular controller using SinonJs for faking a resource object and $q for simulating promise chains.
To mock the promise chain, you must obtain a defer object from $q and then extract a promise from it.
During testing, you can mimic either a successful or failed outcome by utilizing promise.resolve() or promise.reject(). Passing an object as a parameter allows you to simulate server data like so: promise.reject(someData).
Remember to execute scope.apply() to ensure that your intended changes are reflected on the scope.
While I'm not completely certain if this methodology is ideal, it has proven effective in my experience.
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