Get FireFox tests passing 100% (previously, there was one failure)

test-app/tests/helpers/browser-detect.js

@@ -1,4 +1,7 @@
 export const isEdge = navigator.userAgent.indexOf('Edge') >= 0;
 
-// Unlike Chrome, Firefox emits `selectionchange` events.
+// Firefox emits `selectionchange` events.
 export const isFirefox = navigator.userAgent.indexOf('Firefox') >= 0;
+
+// Chrome emits `selectionchange` events.
+export const isChrome = navigator.userAgent.indexOf('Chrome') >= 0;

test-app/tests/unit/dom/click-test.js

@@ -200,14 +200,7 @@ module('DOM Helper: click', function (hooks) {
   });
 
   module('focusable element types', function () {
-    let clickSteps = [
-      'mousedown',
-      'focus',
-      'focusin',
-      'selectionchange',
-      'mouseup',
-      'click',
-    ];
+    let clickSteps = ['mousedown', 'focus', 'focusin', 'mouseup', 'click'];
 
     test('clicking a input via selector with context set', async function (assert) {
       element = buildInstrumentedElement('input');

test-app/tests/unit/dom/fill-in-test.js

@@ -1,7 +1,7 @@
 import { module, test } from 'qunit';
 import { fillIn, setupContext, teardownContext } from '@ember/test-helpers';
 import { buildInstrumentedElement, insertElement } from '../../helpers/events';
-import { isFirefox } from '../../helpers/browser-detect';
+import { isFirefox, isChrome } from '../../helpers/browser-detect';
 import hasEmberVersion from '@ember/test-helpers/has-ember-version';
 import {
   registerHooks,
@@ -12,7 +12,7 @@ import { createDescriptor } from 'dom-element-descriptors';
 
 let clickSteps = ['focus', 'focusin', 'input', 'change'];
 
-if (isFirefox) {
+if (isFirefox || isChrome) {
   clickSteps.push('selectionchange');
 }
 
@@ -270,7 +270,7 @@ module('DOM Helper: fillIn', function (hooks) {
     await setupContext(context);
     await fillIn(createDescriptor({ element }), 'foo');
 
-    assert.verifySteps(clickSteps);
+    assert.verifySteps(['focus', 'focusin', 'input', 'change']);
     assert.strictEqual(
       document.activeElement,
       element,