🐛 Fixed Admin search sometimes stalling on first query (#20143)

closes https://linear.app/tryghost/issue/MOM-103

- the `yield waitForProperty(...)` call that was supposed to return once the content refresh occurred never reached a valid state so the first search query (or any later query) where a content refresh occurred would never resolve causing search to look like it had stalled
- switched to waiting for the last running task to resolve instead which does the same as the previous code intended
- exported the `getPosts` request handler function so in mirage config so we can re-use it with different timing on a per-case basis

ghost/admin/app/services/search.js

@@ -3,7 +3,7 @@ import Service from '@ember/service';
 import {isBlank, isEmpty} from '@ember/utils';
 import {pluralize} from 'ember-inflector';
 import {inject as service} from '@ember/service';
-import {task, timeout, waitForProperty} from 'ember-concurrency';
+import {task, timeout} from 'ember-concurrency';
 
 export default class SearchService extends Service {
     @service ajax;
@@ -59,7 +59,7 @@ export default class SearchService extends Service {
 
         // wait for any on-going refresh to finish
         if (this.refreshContentTask.isRunning) {
-            yield waitForProperty(this, 'refreshContentTask.isIdle');
+            yield this.refreshContentTask.lastRunning;
         }
 
         const searchResult = this._searchContent(term);

ghost/admin/mirage/config/posts.js

@@ -23,6 +23,28 @@ function extractTags(postAttrs, tags) {
     });
 }
 
+// TODO: handle authors filter
+export function getPosts({posts}, {queryParams}) {
+    let {filter, page, limit} = queryParams;
+
+    page = +page || 1;
+    limit = +limit || 15;
+
+    let statusFilter = extractFilterParam('status', filter);
+
+    let collection = posts.all().filter((post) => {
+        let matchesStatus = true;
+
+        if (!isEmpty(statusFilter)) {
+            matchesStatus = statusFilter.includes(post.status);
+        }
+
+        return matchesStatus;
+    });
+
+    return paginateModelCollection('posts', collection, page, limit);
+}
+
 export default function mockPosts(server) {
     server.post('/posts', function ({posts, users, tags}) {
         let attrs = this.normalizedRequestAttrs();
@@ -38,26 +60,7 @@ export default function mockPosts(server) {
     });
 
     // TODO: handle authors filter
-    server.get('/posts/', function ({posts}, {queryParams}) {
-        let {filter, page, limit} = queryParams;
-
-        page = +page || 1;
-        limit = +limit || 15;
-
-        let statusFilter = extractFilterParam('status', filter);
-
-        let collection = posts.all().filter((post) => {
-            let matchesStatus = true;
-
-            if (!isEmpty(statusFilter)) {
-                matchesStatus = statusFilter.includes(post.status);
-            }
-
-            return matchesStatus;
-        });
-
-        return paginateModelCollection('posts', collection, page, limit);
-    });
+    server.get('/posts/', getPosts);
 
     server.get('/posts/:id/', function ({posts}, {params}) {
         let {id} = params;

ghost/admin/tests/acceptance/search-test.js

@@ -3,6 +3,7 @@ import {authenticateSession} from 'ember-simple-auth/test-support';
 import {click, currentURL, find, findAll, triggerKeyEvent, visit} from '@ember/test-helpers';
 import {describe, it} from 'mocha';
 import {expect} from 'chai';
+import {getPosts} from '../../mirage/config/posts';
 import {setupApplicationTest} from 'ember-mocha';
 import {setupMirage} from 'ember-cli-mirage/test-support';
 import {typeInSearch} from 'ember-power-select/test-support/helpers';
@@ -142,4 +143,26 @@ describe('Acceptance: Search', function () {
         await typeInSearch('x');
         expect(find('.ember-power-select-option--no-matches-message'), 'no results message').to.contain.text('No results found');
     });
+
+    // https://linear.app/tryghost/issue/MOM-103/search-stalls-on-query-when-refresh-occurs
+    it('handles refresh on first search being slow', async function () {
+        this.server.get('/posts/', getPosts, {timing: 200});
+
+        await visit('/dashboard');
+        await click('[data-test-button="search"]');
+        await typeInSearch('first'); // search is not case sensitive
+
+        // all groups are present
+        const groupNames = findAll('.ember-power-select-group-name');
+        expect(groupNames, 'group names').to.have.length(4);
+        expect(groupNames.map(el => el.textContent.trim())).to.deep.equal(['Posts', 'Pages', 'Staff', 'Tags']);
+
+        // correct results are found
+        const options = findAll('.ember-power-select-option');
+        expect(options, 'number of search results').to.have.length(4);
+        expect(options.map(el => el.textContent.trim())).to.deep.equal(['First post', 'First page', 'First user', 'First tag']);
+
+        // first item is selected
+        expect(options[0]).to.have.attribute('aria-current', 'true');
+    });
 });