Exhaustive selection test.

chrome/browser/resources/chromeos/chromevox/cvox2/background/cursors_test.extjs

 // Copyright 2014 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.
 
 // Include test fixture.
 GEN_INCLUDE(['../../testing/chromevox_next_e2e_test_base.js']);
 
 /**
  * Test fixture for cvox2.cursors.
  * @constructor
@@ skipping 357 matching lines @@
     assertEquals('inlineTextBox', secondLine.role);
     assertEquals('diff ', secondLine.name);
 
     var secondLineCursor = new cursors.Cursor(secondLine, -1);
     assertEquals(-1, secondLineCursor.selectionIndex_);
     secondLineCursor = new cursors.Cursor(secondLine, 0);
     secondLineCursor.index = 0;
     assertEquals(6, secondLineCursor.selectionIndex_);
   });
 });
+
+TEST_F('CursorsTest', 'ExhaustSelection', function() {
+  this.runWithLoadedTree(function() {/*!
+    <p style="max-width: 100px">
+    A new version of the ChromeVox screen
+    reader on Chrome OS, currently known as “ChromeVox Next,” is
+    available for beta testing.
+    </p>
+  */},
+  function(root) {
+    var node =       root.firstChild.firstChild;
+    var range = new cursors.Range(
+        new cursors.Cursor(node, 0),
+        new cursors.Cursor(node, node.name.length));
+    var length = range.end.selectionIndex_;
+    var rev = function(start, end) {
+      if (start == end && end == (length - 1))
+        return;
+
+      if (start == length - 1) {
+        start = 0;
+        end++;
+      }else {
+        start++;
+      }
+
+      this.listenOnce(root, 'textSelectionChanged', function() {
+        console.log('Received selection: '+root.anchorOffset + ' ' + root.focusOffset);
+        rev(start, end);
+      }, true);
+
+      range.start.index_ = start;
+      range.end.index_ = end;
+
+      console.log('Waiting for textSelectionChanged on: ' + start + ' ' + end);
+      range.select();
+    }.bind(this);
+
+    rev(-1, 0);
+  });
+});