How to test if exception is thrown in AngularJS

Question

How to test if exception is thrown in AngularJS

I need to test a directive, and it should throw an exception. How can I test that the exception was thrown, in jasmine?

The directives link function:

link: function() {
    if(something) {
        throw new TypeError('Error message');
    }
}

I have not yet successfully implemented a test that actually catches the error and reports that the test was successful.

unit-testing
angularjs
jasmine
angularjs-directive

Answer 1

This is how I do it:

describe("myDirective", function() {
        it("should throw an error", inject(function ($compile, $rootScope) {
                function errorFunctionWrapper()
                {
                    $compile(angular.element("<div my-directive></div>"))($rootScope);
                }
                expect(errorFunctionWrapper).toThrow();
        }));
});

Answer 2

    it("should throw an error", inject(function ($compile, $rootScope) {
        expect(function () {
            $compile(angular.element("<directive-name></directive-name>"))($rootScope.$new());
        }).toThrow();
    }));