Fix flaky test in plugin list

Change-Id: I2c37ac77639d13f525d14de1d1ae97c5fb13ff15

polygerrit-ui/app/elements/admin/gr-admin-plugin-list/gr-admin-plugin-list.js

@@ -30,6 +30,10 @@
     ],
 
     ready() {
+      this._getPlugins();
+    },
+
+    _getPlugins() {
       return this.$.restAPI.getPlugins()
           .then(plugins => {
             if (!plugins) {
@@ -46,7 +50,6 @@
           });
     },
 
-
     _status(item) {
       return item.disabled === true ? 'Disabled' : 'Enabled';
     },

polygerrit-ui/app/elements/admin/gr-admin-plugin-list/gr-admin-plugin-list_test.html

@@ -50,6 +50,10 @@ limitations under the License.
 
     setup(() => {
       sandbox = sinon.sandbox.create();
+      plugins = _.times(26, pluginGenerator);
+      stub('gr-rest-api-interface', {
+        getPlugins() { return Promise.resolve(plugins); },
+      });
       element = fixture('basic');
     });
 
@@ -57,29 +61,12 @@ limitations under the License.
       sandbox.restore();
     });
 
-    suite('list with plugins', () => {
+    test('_plugins item is formatted correctly', () => {
-      setup(done => {
+      return element._getPlugins().then(() => {
-        plugins = _.times(26, pluginGenerator);
-
-        stub('gr-rest-api-interface', {
-          getPlugins() {
-            return Promise.resolve(plugins);
-          },
-        });
-
-        flush(done);
-      });
-
-      test('test for a test plugin in the list', done => {
-        element._plugins = plugins;
-
-        flush(() => {
         assert.equal(element._plugins[2].id, 'test3');
         assert.equal(element._plugins[2].index_url, 'plugins/test3/');
         assert.equal(element._plugins[2].version, '3.0-SNAPSHOT');
         assert.equal(element._plugins[2].disabled, false);
-          done();
-        });
       });
     });
   });