Merge pull request #304 from arv/add-missing-test-file

Add missing test file

test/js/MutationObserver/shadow-root.js

@@ -0,0 +1,105 @@
+/*
+ * Copyright 2013 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('MutationObserver', function() {
+
+  suite('Shadow Root', function() {
+
+    var unwrap = ShadowDOMPolyfill.unwrap;
+
+    test('Make no notifications due to render', function() {
+      var a = document.createElement('a');
+      a.innerHTML = '<b></b>';
+      var sr = a.createShadowRoot();
+      sr.innerHTML = '<c></c><d><content></content></d>';
+
+      var observer = new MutationObserver(function() {});
+
+      observer.observe(a, {
+        childList: true,
+        attributes: true,
+        characterData: true,
+        subtree: true
+      });
+      observer.observe(sr, {
+        childList: true,
+        attributes: true,
+        characterData: true,
+        subtree: true
+      });
+
+      a.offsetHeight;
+
+      var records = observer.takeRecords();
+      assert.equal(records.length, 0);
+
+      assert.equal(unwrap(a).outerHTML, '<a><c></c><d><b></b></d></a>');
+    });
+
+    test('Observe ShadowRoot', function() {
+      var a = document.createElement('a');
+      a.innerHTML = '<b></b>';
+      var sr = a.createShadowRoot();
+      sr.innerHTML = '<c></c><d><content></content></d>';
+      var c = sr.firstChild;
+      var d = c.nextSibling;
+      var content = d.firstChild;
+
+      var observer = new MutationObserver(function() {});
+
+      observer.observe(sr, {
+        childList: true,
+        subtree: true
+      });
+
+      a.offsetHeight;
+
+      var records = observer.takeRecords();
+      assert.equal(records.length, 0);
+      assert.equal(unwrap(a).outerHTML, '<a><c></c><d><b></b></d></a>');
+
+      var e = document.createElement('e');
+      e.innerHTML = '<f></f><g></g><h></h>';
+      var f = e.firstChild;
+      var g = f.nextSibling
+      var h = e.lastChild;
+
+      var observer2 = new MutationObserver(function() {});
+      observer2.observe(e, {
+        childList: true,
+        subtree: true
+      });
+
+      d.insertBefore(g, content);
+
+      assert.equal(unwrap(a).outerHTML, '<a><c></c><d><b></b></d></a>');
+      a.offsetHeight;
+      assert.equal(unwrap(a).outerHTML, '<a><c></c><d><g></g><b></b></d></a>');
+
+      records = observer.takeRecords();
+      assert.equal(records.length, 1);
+      expectMutationRecord(records[0], {
+        type: 'childList',
+        target: d,
+        addedNodes: [g],
+        previousSibling: null,
+        nextSibling: content
+      });
+
+      records = observer2.takeRecords();
+      assert.equal(records.length, 1);
+      expectMutationRecord(records[0], {
+        type: 'childList',
+        target: e,
+        removedNodes: [g],
+        previousSibling: f,
+        nextSibling: h
+      });
+    });
+
+  });
+
+});