DEV: Add a js smoke test (#20)

One test is infinitely better than zero. The math checks out.

test/javascripts/acceptance/knowledge-explorer-test.js.es6

@@ -0,0 +1,32 @@
+import { acceptance, queryAll } from 'helpers/qunit-helpers';
+import docsFixtures from '../fixtures/docs';
+
+acceptance('Knowledge Explorer', function (needs) {
+  needs.user();
+  needs.settings({
+    knowledge_explorer_enabled: true,
+  });
+
+  needs.pretender((server, helper) => {
+    server.get('/docs.json', () => helper.response(docsFixtures));
+  });
+
+  test('index page', async function (assert) {
+    await visit('/');
+    await click('#toggle-hamburger-menu');
+    await click('.knowledge-explorer-link');
+
+    assert.equal(
+      queryAll('.knowledge-explorer-category')[0].innerText.trim(),
+      'bug 119'
+    );
+    assert.equal(
+      queryAll('.knowledge-explorer-tag')[0].innerText.trim(),
+      'something 74'
+    );
+    assert.equal(
+      queryAll('.knowledge-explorer-topic-link')[0].innerText.trim(),
+      'Importing from Software X'
+    );
+  });
+});

test/javascripts/fixtures/docs.js.es6

@@ -0,0 +1,91 @@
+export default {
+  tags: [
+    {
+      id: 'something',
+      count: 74,
+      active: false,
+    },
+  ],
+  categories: [
+    {
+      id: 1,
+      count: 119,
+      active: false,
+    },
+  ],
+  topics: {
+    users: [
+      {
+        id: 2,
+        username: 'cvx',
+        name: 'Jarek',
+        avatar_template: '/letter_avatar/cvx/{size}/2.png',
+      },
+    ],
+    primary_groups: [],
+    topic_list: {
+      can_create_topic: true,
+      draft: null,
+      draft_key: 'new_topic',
+      draft_sequence: 94,
+      per_page: 30,
+      top_tags: ['something'],
+      topics: [
+        {
+          id: 54881,
+          title: 'Importing from Software X',
+          fancy_title: 'Importing from Software X',
+          slug: 'importing-from-software-x',
+          posts_count: 112,
+          reply_count: 72,
+          highest_post_number: 122,
+          image_url: null,
+          created_at: '2016-12-28T14:59:29.396Z',
+          last_posted_at: '2020-11-14T16:21:35.720Z',
+          bumped: true,
+          bumped_at: '2020-11-14T16:21:35.720Z',
+          archetype: 'regular',
+          unseen: false,
+          pinned: false,
+          unpinned: null,
+          visible: true,
+          closed: false,
+          archived: false,
+          bookmarked: null,
+          liked: null,
+          tags: ['something'],
+          views: 15222,
+          like_count: 167,
+          has_summary: true,
+          last_poster_username: 'cvx',
+          category_id: 1,
+          pinned_globally: false,
+          featured_link: null,
+          has_accepted_answer: false,
+          posters: [
+            {
+              extras: null,
+              description: 'Original Poster',
+              user_id: 2,
+              primary_group_id: null,
+            },
+            {
+              extras: null,
+              description: 'Frequent Poster',
+              user_id: 2,
+              primary_group_id: null,
+            },
+            {
+              extras: 'latest',
+              description: 'Most Recent Poster',
+              user_id: 2,
+              primary_group_id: null,
+            },
+          ],
+        },
+      ],
+    },
+    load_more_url: '/docs.json?page=1',
+  },
+  search_count: null,
+};