add spyOnDependency method

spec/javascripts/.eslintrc

@@ -18,6 +18,7 @@
     "sandbox": false,
     "setFixtures": false,
     "setStyleFixtures": false,
+    "spyOnDependency": false,
     "spyOnEvent": false,
     "ClassSpecHelper": false
   },

spec/javascripts/pages/admin/jobs/index/components/stop_jobs_modal_spec.js

@@ -2,7 +2,6 @@ import Vue from 'vue';
 
 import axios from '~/lib/utils/axios_utils';
 import stopJobsModal from '~/pages/admin/jobs/index/components/stop_jobs_modal.vue';
-import * as urlUtility from '~/lib/utils/url_utility';
 
 import mountComponent from 'spec/helpers/vue_mount_component_helper';
 
@@ -24,7 +23,7 @@ describe('stop_jobs_modal.vue', () => {
   describe('onSubmit', () => {
     it('stops jobs and redirects to overview page', (done) => {
       const responseURL = `${gl.TEST_HOST}/stop_jobs_modal.vue/jobs`;
-      const redirectSpy = spyOn(urlUtility, 'redirectTo');
+      const redirectSpy = spyOnDependency(stopJobsModal, 'redirectTo');
       spyOn(axios, 'post').and.callFake((url) => {
         expect(url).toBe(props.url);
         return Promise.resolve({
@@ -44,7 +43,7 @@ describe('stop_jobs_modal.vue', () => {
 
     it('displays error if stopping jobs failed', (done) => {
       const dummyError = new Error('stopping jobs failed');
-      const redirectSpy = spyOn(urlUtility, 'redirectTo');
+      const redirectSpy = spyOnDependency(stopJobsModal, 'redirectTo');
       spyOn(axios, 'post').and.callFake((url) => {
         expect(url).toBe(props.url);
         return Promise.reject(dummyError);

spec/javascripts/pages/milestones/shared/components/delete_milestone_modal_spec.js

@@ -3,7 +3,6 @@ import Vue from 'vue';
 import axios from '~/lib/utils/axios_utils';
 import deleteMilestoneModal from '~/pages/milestones/shared/components/delete_milestone_modal.vue';
 import eventHub from '~/pages/milestones/shared/event_hub';
-import * as urlUtility from '~/lib/utils/url_utility';
 
 import mountComponent from 'spec/helpers/vue_mount_component_helper';
 
@@ -40,7 +39,7 @@ describe('delete_milestone_modal.vue', () => {
           },
         });
       });
-      const redirectSpy = spyOn(urlUtility, 'redirectTo');
+      const redirectSpy = spyOnDependency(deleteMilestoneModal, 'redirectTo');
 
       vm.onSubmit()
       .then(() => {
@@ -60,7 +59,7 @@ describe('delete_milestone_modal.vue', () => {
         eventHub.$emit.calls.reset();
         return Promise.reject(dummyError);
       });
-      const redirectSpy = spyOn(urlUtility, 'redirectTo');
+      const redirectSpy = spyOnDependency(deleteMilestoneModal, 'redirectTo');
 
       vm.onSubmit()
         .catch((error) => {

spec/javascripts/test_bundle.js

-/* eslint-disable jasmine/no-global-setup */
+/* eslint-disable jasmine/no-global-setup, jasmine/no-unsafe-spy, no-underscore-dangle */
+
 import $ from 'jquery';
 import 'vendor/jasmine-jquery';
 import '~/commons';
@@ -55,6 +56,17 @@ window.addEventListener('unhandledrejection', event => {
   console.error(event.reason.stack || event.reason);
 });
 
+// Add global function to spy on a module's dependencies via rewire
+window.spyOnDependency = (module, name) => {
+  const dependency = module.__GetDependency__(name);
+  const spy = jasmine.createSpy(name, dependency);
+  module.__Rewire__(name, spy);
+  return spy;
+};
+
+// Reset any rewired modules after each test (see babel-plugin-rewire)
+afterEach(__rewire_reset_all__); // eslint-disable-line
+
 // HACK: Chrome 59 disconnects if there are too many synchronous tests in a row
 // because it appears to lock up the thread that communicates to Karma's socket
 // This async beforeEach gets called on every spec and releases the JS thread long