Replaced use of $.get with axios.get and updated tests

app/assets/javascripts/diff.js

+import axios from '~/lib/utils/axios_utils';
+import flash from '~/flash';
+import { __ } from '~/locale';
 import { getLocationHash } from './lib/utils/url_utility';
 import FilesCommentButton from './files_comment_button';
 import SingleFileDiff from './single_file_diff';
@@ -69,7 +72,10 @@ export default class Diff {
     const view = file.data('view');
 
     const params = { since, to, bottom, offset, unfold, view };
-    $.get(link, params, response => $target.parent().replaceWith(response));
+    // $.get(link, params, response => $target.parent().replaceWith(response));
+    axios.get(link, { params })
+    .then(({ data }) => $target.parent().replaceWith(data))
+    .catch(() => flash(__('An error occurred while loading diff')));
   }
 
   openAnchoredDiff(cb) {

app/assets/javascripts/gpg_badges.js

+import axios from '~/lib/utils/axios_utils';
+import flash from '~/flash';
+import { __ } from '~/locale';
+
 export default class GpgBadges {
   static fetch() {
     const badges = $('.js-loading-gpg-badge');
@@ -5,13 +9,13 @@ export default class GpgBadges {
 
     badges.html('<i class="fa fa-spinner fa-spin"></i>');
 
-    $.get({
-      url: form.data('signatures-path'),
-      data: form.serialize(),
-    }).done((response) => {
-      response.signatures.forEach((signature) => {
+    const params = form.serialize();
+    return axios.get(form.data('signatures-path'), { params })
+    .then(({ data }) => {
+      data.signatures.forEach((signature) => {
         badges.filter(`[data-commit-sha="${signature.commit_sha}"]`).replaceWith(signature.html);
       });
-    });
+    })
+    .catch(() => flash(__('An error occurred while loading comm')));
   }
 }

spec/javascripts/gpg_badges_spec.js

+import MockAdapter from 'axios-mock-adapter';
+import axios from '~/lib/utils/axios_utils';
 import GpgBadges from '~/gpg_badges';
 
 describe('GpgBadges', () => {
+  let mock;
   const dummyCommitSha = 'n0m0rec0ffee';
   const dummyBadgeHtml = 'dummy html';
   const dummyResponse = {
@@ -11,38 +14,43 @@ describe('GpgBadges', () => {
   };
 
   beforeEach(() => {
+    mock = new MockAdapter(axios);
     setFixtures(`
+      <form 
+        class="commits-search-form" data-signatures-path="/hello" action="/hello"
+        method="get">
+        <input name="utf8" type="hidden" value="✓">
+        <input type="search" name="search" id="commits-search"class="form-control search-text-input input-short">
+      </form>
       <div class="parent-container">
         <div class="js-loading-gpg-badge" data-commit-sha="${dummyCommitSha}"></div>
       </div>
     `);
   });
 
-  it('displays a loading spinner', () => {
-    spyOn($, 'get').and.returnValue({
-      done() {
-        // intentionally left blank
-      },
+  afterEach(() => {
+    mock.restore();
   });
 
-    GpgBadges.fetch();
+  it('displays a loading spinner', (done) => {
+    mock.onGet('/hello').reply(200);
 
+    GpgBadges.fetch().then(() => {
       expect(document.querySelector('.js-loading-gpg-badge:empty')).toBe(null);
       const spinners = document.querySelectorAll('.js-loading-gpg-badge i.fa.fa-spinner.fa-spin');
       expect(spinners.length).toBe(1);
+      done();
+    }).catch(err => done(err));
   });
 
-  it('replaces the loading spinner', () => {
-    spyOn($, 'get').and.returnValue({
-      done(callback) {
-        callback(dummyResponse);
-      },
-    });
-
-    GpgBadges.fetch();
+  it('replaces the loading spinner', (done) => {
+    mock.onGet('/hello').reply(200, dummyResponse);
 
+    GpgBadges.fetch().then(() => {
       expect(document.querySelector('.js-loading-gpg-badge')).toBe(null);
       const parentContainer = document.querySelector('.parent-container');
       expect(parentContainer.innerHTML.trim()).toEqual(dummyBadgeHtml);
+      done();
+    }).catch(err => done(err));
   });
 });