MutationObserver

tests/html/mutationobserver_test.dart

+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file

[vsm, 2012/07/19 01:12:30]

2012

+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#library('mutationobserver_test');
+#import('../../lib/unittest/unittest.dart');
+#import('../../lib/unittest/html_config.dart');
+#import('dart:html');
+
+/**
+ * Test suite for Mutation Observers. This is just a small set of sanity
+ * checks, not a complete test suite.
+ */
+main() {
+  useHtmlConfiguration();
+
+  group('childList', () {
+
+    mutationCallback(count, expectation) {
+      var done = false;
+      var nodes = [];
+
+      callback(mutations, observer) {
+        for (MutationRecord mutation in mutations) {
+          for (Node node in mutation.addedNodes) {
+            nodes.add(node);
+          }
+        }
+        if (nodes.length >= count) {
+          done = true;
+          expect(nodes.length, count);
+          expect(nodes, expectation);
+        }
+      }
+
+      return expectAsyncUntil2(callback, () => done);
+    }
+
+    test('empty options is syntax error', () {
+        var mutationObserver = new MutationObserver(
+            (mutations, observer) { expect(false, 'Should not be reached'); });
+        expect(() { mutationObserver.observe(document, {}); },
+               throws);
+      });
+
+    test('direct-parallel options-map', () {
+        var container = new DivElement();
+        var div1 = new DivElement();
+        var div2 = new DivElement();
+        var mutationObserver = new MutationObserver(
+            mutationCallback(2, orderedEquals([div1, div2])));
+        mutationObserver.observe(container, {'childList': true});
+
+        container.nodes.add(div1);
+        container.nodes.add(div2);
+      });
+
+    test('direct-parallel options-named', () {
+        var container = new DivElement();
+        var div1 = new DivElement();
+        var div2 = new DivElement();
+        var mutationObserver = new MutationObserver(
+            mutationCallback(2, orderedEquals([div1, div2])));
+        mutationObserver.observe(container, childList: true);
+
+        container.nodes.add(div1);
+        container.nodes.add(div2);
+      });
+
+    test('direct-nested options-named', () {
+        var container = new DivElement();
+        var div1 = new DivElement();
+        var div2 = new DivElement();
+        var mutationObserver =
+            new MutationObserver(mutationCallback(1, orderedEquals([div1])));
+        mutationObserver.observe(container, childList: true);
+
+        container.nodes.add(div1);
+        div1.nodes.add(div2);
+      });
+
+
+    test('subtree options-map', () {
+        var container = new DivElement();
+        var div1 = new DivElement();
+        var div2 = new DivElement();
+        var mutationObserver = new MutationObserver(
+            mutationCallback(2, orderedEquals([div1, div2])));
+        mutationObserver.observe(container,
+                                 {'childList': true, 'subtree': true});
+
+        container.nodes.add(div1);
+        div1.nodes.add(div2);
+      });
+
+    test('subtree options-named', () {
+        var container = new DivElement();
+        var div1 = new DivElement();
+        var div2 = new DivElement();
+        var mutationObserver = new MutationObserver(
+            mutationCallback(2, orderedEquals([div1, div2])));
+        mutationObserver.observe(container, childList: true, subtree: true);
+
+        container.nodes.add(div1);
+        div1.nodes.add(div2);
+      });
+  });
+}