fix version dropdown and add a test

addon/controllers/version.js

@@ -1,39 +1,61 @@
-/* eslint-disable prettier/prettier, ember/no-classic-classes, ember/no-get, ember/no-actions-hash */
-import Controller, {
-  inject as controller,
-} from '@ember/controller';
-import { get, computed } from '@ember/object';
-import { alias } from '@ember/object/computed';
+import Controller, { inject as controller } from '@ember/controller';
+import { action } from '@ember/object';
 import { inject as service } from '@ember/service';
 import compareVersions from 'compare-versions';
+import { deprecate } from '@ember/debug';
 
-export default Controller.extend({
-  page: service(),
-  application: controller(),
-  store: service(),
-  router: service(),
+export default class VersionController extends Controller {
+  @service page;
+  @controller application;
 
-  pages: alias('model.pages'),
+  @service store;
+  @service router;
 
-  versions: computed('application.model.allVersions.[]', function () {
-    let allVersions = get(this, 'application.model.allVersions');
+  get pages() {
+    return this.model.pages;
+  }
+
+  get versions() {
+    let allVersions = this.application.model.allVersions;
 
-    if(!allVersions) {
-      return;
+    if (!allVersions) {
+      return [];
     }
 
     return allVersions.sort(compareVersions).reverse();
-  }),
+  }
 
-  actions: {
-    selectVersion(version) {
-      // Navigate to same section/page if it exists
-      const path = get(this, 'page.currentPage.url');
-      this.store.queryRecord('content', {version, path}).then(() => {
+  @action
+  selectVersion(version) {
+    // Navigate to same section/page if it exists
+    const path = this.page.currentPage.url;
+    this.store
+      .queryRecord('content', { version, path })
+      .then(() => {
         this.router.transitionTo(`/${version}/${path}`);
-      }).catch(() => {
-        this.router.transitionTo('version', version);
       })
-    }
+      .catch(() => {
+        this.router.transitionTo('version', version);
+      });
   }
-});
+
+  // eslint-disable-next-line ember/no-actions-hash
+  actions = {
+    selectVersion: (version) => {
+      deprecate(
+        'Use of the actions block in the guidemaker version controller is deprecated. If you are accessing controller.actions.selectVersion you can now access controller.selectVersion',
+        false,
+        {
+          id: 'guidemaker-version-controller-actions',
+          until: '5.0.0',
+          for: 'guidemaker',
+          since: {
+            available: '4.0.3',
+            enabled: '4.0.3',
+          },
+        },
+      );
+      this.selectVersion(version);
+    },
+  };
+}

tests/acceptance/version-test.js

@@ -0,0 +1,15 @@
+import { module, test } from 'qunit';
+import { visit, currentURL } from '@ember/test-helpers';
+import { setupApplicationTest } from 'dummy/tests/helpers';
+import { selectChoose } from 'ember-power-select/test-support';
+
+module('Acceptance | version', function (hooks) {
+  setupApplicationTest(hooks);
+
+  test('the version dropdown works', async function (assert) {
+    await visit('/');
+    await selectChoose('.ember-basic-dropdown-trigger', '1.1');
+
+    assert.strictEqual(currentURL(), '/v1.1.0');
+  });
+});