An example on how to run a Jasmine test when the code under test is using require.js

routertest.js

define([
        '../../../vendor/Squire',
        'sinon'
    ],
    function(
        Squire, sinon
    ) {
        describe("AppRouter routes", function() {

            // set up the async spec
            var async = new AsyncSpec(this);
            
            //app is imported in router with require. I want to mock it and verify that the correct method, 
            //'displayIndex', gets called
            var appMock = {
                displayIndex: sinon.spy()
            };
            // run an async setup
            async.beforeEach(function(done) {
              // Use Squire.js to mock dependencies when using require.js
                var injector = new Squire()
                    .mock('app', appMock) // When 'app' is required in the router.js, use appMock
                    .require(['router'], function(Router) { // Require the router, the actual code under test
                        this.router = new Router;
                        this.router.index(); // Call the index method. TODO: this should be done using router.navigate('') instead, but by some reason it doesn't work
                        
                        done(); // Tell Jasmine.Async that everything is done

                    });

            });

            // run an async expectation
            async.it("should call the displayIndex method", function(done) {
              
                expect(appMock.displayIndex.calledOnce).toBe(true); // This expectation will be run after the beforeEach is completed.
                
                // all async calls completed
                done();
            });
        });
    });