Refactor to remove parseQueryStringIntoObject

This refactor removes parseQueryStringIntoObject in favor of using
queryToObject from our URL utils.

app/assets/javascripts/gpg_badges.js

 import $ from 'jquery';
 import createFlash from '~/flash';
 import axios from '~/lib/utils/axios_utils';
-import { parseQueryStringIntoObject } from '~/lib/utils/common_utils';
+import { queryToObject } from '~/lib/utils/url_utility';
+
 import { __ } from '~/locale';
 
 export default class GpgBadges {
@@ -27,7 +28,7 @@ export default class GpgBadges {
       return Promise.reject(new Error(__('Missing commit signatures endpoint!')));
     }
 
-    const params = parseQueryStringIntoObject(tag.serialize());
+    const params = queryToObject(tag.serialize());
     return axios
       .get(endpoint, { params })
       .then(({ data }) => {

app/assets/javascripts/lib/utils/common_utils.js

@@ -418,28 +418,6 @@ export const parseIntPagination = (paginationInformation) => ({
   previousPage: parseInt(paginationInformation['X-PREV-PAGE'], 10),
 });
 
-/**
- * Given a string of query parameters creates an object.
- *
- * @example
- * `scope=all&page=2` -> { scope: 'all', page: '2'}
- * `scope=all` -> { scope: 'all' }
- * ``-> {}
- * @param {String} query
- * @returns {Object}
- */
-export const parseQueryStringIntoObject = (query = '') => {
-  if (query === '') return {};
-
-  return query.split('&').reduce((acc, element) => {
-    const val = element.split('=');
-    Object.assign(acc, {
-      [val[0]]: decodeURIComponent(val[1]),
-    });
-    return acc;
-  }, {});
-};
-
 /**
  * Converts object with key-value pairs
  * into query-param string

spec/frontend/gpg_badges_spec.js

@@ -17,19 +17,23 @@ describe('GpgBadges', () => {
   };
   const dummyUrl = `${TEST_HOST}/dummy/signatures`;
 
-  beforeEach(() => {
-    mock = new MockAdapter(axios);
+  const setForm = ({ utf8 = '✓', search = '' } = {}) => {
     setFixtures(`
       <form
         class="commits-search-form js-signature-container" data-signatures-path="${dummyUrl}" action="${dummyUrl}"
         method="get">
-        <input name="utf8" type="hidden" value="✓">
-        <input type="search" name="search" id="commits-search"class="form-control search-text-input input-short">
+        <input name="utf8" type="hidden" value="${utf8}">
+        <input type="search" name="search" value="${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>
     `);
+  };
+
+  beforeEach(() => {
+    mock = new MockAdapter(axios);
+    setForm();
   });
 
   afterEach(() => {
@@ -62,6 +66,44 @@ describe('GpgBadges', () => {
       .catch(done.fail);
   });
 
+  it('fetches commit signatures', async () => {
+    mock.onGet(dummyUrl).replyOnce(200);
+
+    await GpgBadges.fetch();
+
+    expect(mock.history.get).toHaveLength(1);
+    expect(mock.history.get[0]).toMatchObject({
+      params: { search: '', utf8: '✓' },
+      url: dummyUrl,
+    });
+  });
+
+  it('fetches commit signatures with search parameters with spaces', async () => {
+    mock.onGet(dummyUrl).replyOnce(200);
+    setForm({ search: 'my search' });
+
+    await GpgBadges.fetch();
+
+    expect(mock.history.get).toHaveLength(1);
+    expect(mock.history.get[0]).toMatchObject({
+      params: { search: 'my search', utf8: '✓' },
+      url: dummyUrl,
+    });
+  });
+
+  it('fetches commit signatures with search parameters with plus symbols', async () => {
+    mock.onGet(dummyUrl).replyOnce(200);
+    setForm({ search: 'my+search' });
+
+    await GpgBadges.fetch();
+
+    expect(mock.history.get).toHaveLength(1);
+    expect(mock.history.get[0]).toMatchObject({
+      params: { search: 'my+search', utf8: '✓' },
+      url: dummyUrl,
+    });
+  });
+
   it('displays a loading spinner', (done) => {
     mock.onGet(dummyUrl).replyOnce(200);
 

spec/frontend/lib/utils/common_utils_spec.js

@@ -175,18 +175,6 @@ describe('common_utils', () => {
     });
   });
 
-  describe('parseQueryStringIntoObject', () => {
-    it('should return object with query parameters', () => {
-      expect(commonUtils.parseQueryStringIntoObject('scope=all&page=2')).toEqual({
-        scope: 'all',
-        page: '2',
-      });
-
-      expect(commonUtils.parseQueryStringIntoObject('scope=all')).toEqual({ scope: 'all' });
-      expect(commonUtils.parseQueryStringIntoObject()).toEqual({});
-    });
-  });
-
   describe('objectToQueryString', () => {
     it('returns empty string when `param` is undefined, null or empty string', () => {
       expect(commonUtils.objectToQueryString()).toBe('');