1 files changed, 106 insertions, 0 deletions
diff --git a/addons/website/static/lib/MutationObservers/test/characterData.js b/addons/website/static/lib/MutationObservers/test/characterData.js
new file mode 100644
index 00000000000..498dc053e6e
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+++ b/addons/website/static/lib/MutationObservers/test/characterData.js
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2012 The Polymer Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style
+ * license that can be found in the LICENSE file.
+ */
+
+suite('JsMutationObserver characterData', function() {
+
+  var testDiv;
+
+  setup(function() {
+    testDiv = document.body.appendChild(document.createElement('div'));
+  });
+
+  teardown(function() {
+    document.body.removeChild(testDiv);
+  });
+
+  test('characterData', function() {
+    var text = document.createTextNode('abc');
+    var observer = new JsMutationObserver(function() {});
+    observer.observe(text, {
+      characterData: true
+    });
+    text.data = 'def';
+    text.data = 'ghi';
+
+    var records = observer.takeRecords();
+    assert.strictEqual(records.length, 2);
+
+    expectRecord(records[0], {
+      type: 'characterData',
+      target: text
+    });
+    expectRecord(records[1], {
+      type: 'characterData',
+      target: text
+    });
+  });
+
+  test('characterData with old value', function() {
+    var text = testDiv.appendChild(document.createTextNode('abc'));
+    var observer = new JsMutationObserver(function() {});
+    observer.observe(text, {
+      characterData: true,
+      characterDataOldValue: true
+    });
+    text.data = 'def';
+    text.data = 'ghi';
+
+    var records = observer.takeRecords();
+    assert.strictEqual(records.length, 2);
+
+    expectRecord(records[0], {
+      type: 'characterData',
+      target: text,
+      oldValue: 'abc'
+    });
+    expectRecord(records[1], {
+      type: 'characterData',
+      target: text,
+      oldValue: 'def'
+    });
+  });
+
+  test('characterData change in subtree should not generate a record',
+      function() {
+    var div = document.createElement('div');
+    var text = div.appendChild(document.createTextNode('abc'));
+    var observer = new JsMutationObserver(function() {});
+    observer.observe(div, {
+      characterData: true
+    });
+    text.data = 'def';
+    text.data = 'ghi';
+
+    var records = observer.takeRecords();
+    assert.strictEqual(records.length, 0);
+  });
+
+  test('characterData change in subtree',
+      function() {
+    var div = document.createElement('div');
+    var text = div.appendChild(document.createTextNode('abc'));
+    var observer = new JsMutationObserver(function() {});
+    observer.observe(div, {
+      characterData: true,
+      subtree: true
+    });
+    text.data = 'def';
+    text.data = 'ghi';
+
+    var records = observer.takeRecords();
+    assert.strictEqual(records.length, 2);
+
+    expectRecord(records[0], {
+      type: 'characterData',
+      target: text
+    });
+    expectRecord(records[1], {
+      type: 'characterData',
+      target: text
+    });
+  });
+
+});
+\ No newline at end of file