ChromeVox Exit Tutorial Test

This change adds a test that confirms the behavior of the
'Exit tutorial' button in the interactive tutorial. Clicking this
button should close the tutorial and return ChromeVox to the web
content.

Bug: 1127047
Change-Id: I12e348fed7e01cc73b54e204cc9447a95b73e86d
AX-Relnotes: N/A
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2416818
Commit-Queue: Akihiro Ota <akihiroota@chromium.org>
Reviewed-by: David Tseng <dtseng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#810012}

chrome/browser/resources/chromeos/accessibility/chromevox/panel/tutorial_test.js

@@ -92,7 +92,7 @@ ChromeVoxTutorialTest = class extends ChromeVoxNextE2ETest {
 
   get simpleDoc() {
     return `
-      <p>Simple</p>
+      <p>Some web content</p>
     `;
   }
 };
@@ -265,4 +265,44 @@ TEST_F('ChromeVoxTutorialTest', 'PracticeAreaNudgesTest', function() {
         .expectSpeech('Press Search + Space to activate the current item.')
         .replay();
   });
-});
+});
\ No newline at end of file
+
+// Tests that the tutorial closes when the 'Exit tutorial' button is clicked.
+TEST_F('ChromeVoxTutorialTest', 'ExitButtonTest', function() {
+  const mockFeedback = this.createMockFeedback();
+  this.runWithLoadedTree(this.simpleDoc, async function(root) {
+    const Panel = this.getPanel();
+    assertTrue(Panel.iTutorialEnabled_);
+    new PanelCommand(PanelCommandType.TUTORIAL).send();
+    await this.waitForTutorial();
+    mockFeedback.expectSpeech('Choose your tutorial experience')
+        .call(doCmd('previousButton'))
+        .expectSpeech('Exit tutorial')
+        .call(doCmd('forceClickOnCurrentItem'))
+        .expectSpeech('Some web content')
+        .replay();
+  });
+});
+
+// Tests that the tutorial closes when Escape is pressed.
+TEST_F('ChromeVoxTutorialTest', 'EscapeTest', function() {
+  const mockFeedback = this.createMockFeedback();
+  this.runWithLoadedTree(this.simpleDoc, async function(root) {
+    const Panel = this.getPanel();
+    assertTrue(Panel.iTutorialEnabled_);
+    new PanelCommand(PanelCommandType.TUTORIAL).send();
+    await this.waitForTutorial();
+    const tutorial = Panel.iTutorial;
+    mockFeedback.expectSpeech('Choose your tutorial experience')
+        .call(() => {
+          // Press Escape.
+          tutorial.onKeyDown({
+            key: 'Escape',
+            preventDefault: () => {},
+            stopPropagation: () => {}
+          });
+        })
+        .expectSpeech('Some web content')
+        .replay();
+  });
+});