My service implementation is structured as follows:
angular.module('app').service('MyService' , function (dependency1, dependency2, dependency3 ...) {
function funcToTest() {
// Do something
}
}
I am wondering how I can inject a particular dependency into the service. Is there a way to only inject dependency2 without including any other dependencies?
When it comes to unit testing Angular controllers, directly passing dependencies is not an option. This is where the lifesaver known as the $provide service steps in!
Check out this example:
beforeEach(module('myApp', function ($provide) {
mockDependency = {
mockFunction: function() {}
};
$provide.value('dependency', mockDependency);
}));
After setting up the dependencies, you can proceed with writing your specs as usual:
beforeEach(inject(function(_MyService_, ...) {
...
MyService = _MyService_;
}));
describe("...", function() {
it("...", function() {
MyService.functionToTest();
// add your expect statements here
})
})
In the given example, note that you have the option to enclose dependencies with underscores, which are overlooked by the injector when resolving the reference name.
By following this code snippet, you can ensure that dependency2 is automatically added to your service whenever it is called
var dependency2;
beforeEach(function () {
inject(function (dependency2){
dependency2 = dependency2;
});
}
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