Prevent bogus 'search-changed' event firing from cr_search_field_behavior.js.

chrome/test/data/webui/cr_elements/cr_toolbar_search_field_tests.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /** @fileoverview Suite of tests for cr-toolbar-search-field. */
 cr.define('cr_toolbar_search_field', function() {
   function registerTests() {
     suite('cr-toolbar-search-field', function() {
       /** @type {?CrToolbarSearchFieldElement} */
       var field = null;
@@ skipping 16 matching lines @@
         });
         document.body.appendChild(field);
       });
 
       teardown(function() {
         field.remove();
         field = null;
         searches = null;
       });
 
+      // Test that no bogus 'search-changed' event is fired during construction

[Dan Beam, 2016/10/28 20:54:06]

s/bogus/initial

[dpapad, 2016/10/28 21:12:13]

Done.

+      // and initialization of the cr-toolbar-search-field element.
+      test('no bogus search-changed event', function() {
+        var didFire = false;
+        var onSearchChanged = function () { didFire = true; };
+
+        // Need to attach listener event before the element is created, to catch
+        // the bogus event.
+        document.body.addEventListener('search-changed', onSearchChanged);
+        document.body.innerHTML =
+            '<cr-toolbar-search-field></cr-toolbar-search-field>';
+        // Remove event listener on |body| so that other tests are not affected.
+        document.body.removeEventListener('search-changed', onSearchChanged);
+
+        assertFalse(didFire, 'Should not have fired search-changed event');
+      });
+
       test('opens and closes correctly', function() {
         assertFalse(field.showingSearch);
         MockInteractions.tap(field);
         assertTrue(field.showingSearch);
         assertEquals(field.$.searchInput, field.root.activeElement);
 
         MockInteractions.blur(field.$.searchInput);
         assertFalse(field.showingSearch);
 
         MockInteractions.tap(field);
@@ skipping 82 matching lines @@
         assertFalse(clearSearch.hidden);
         assertTrue(field.showingSearch);
       });
     });
   }
 
   return {
     registerTests: registerTests,
   };
 });