Move client/{base, observable, layout, touch, util, view} to samples/ui_lib .

samples/tests/samples/src/lib/observable/AbstractObservableTests.dart

Index: samples/tests/samples/src/lib/observable/AbstractObservableTests.dart
===================================================================
--- samples/tests/samples/src/lib/observable/AbstractObservableTests.dart	(revision 0)
+++ samples/tests/samples/src/lib/observable/AbstractObservableTests.dart	(revision 0)
@@ -0,0 +1,73 @@
+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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.
+
+testAbstractObservable() {
+  group('addChangeListener()', () {
+    test('adding the same listener twice returns false the second time', () {
+      final target = new AbstractObservable();
+      final listener = (e) { };
+
+      expect(target.addChangeListener(listener)).isTrue();
+      expect(target.addChangeListener(listener)).isFalse();
+    });
+
+    test('modifies listeners list', () {
+      // check that add/remove works, see contents of listeners too
+      final target = new AbstractObservable();
+      final l1 = (e) { };
+      final l2 = (e) { };
+      final l3 = (e) { };
+      final l4 = (e) { };
+
+      expect(target.listeners).equalsCollection([]);
+
+      target.addChangeListener(l1);
+      expect(target.listeners).equalsCollection([l1]);
+
+      target.addChangeListener(l2);
+      expect(target.listeners).equalsCollection([l1, l2]);
+
+      target.addChangeListener(l3);
+      target.addChangeListener(l4);
+      expect(target.listeners).equalsCollection([l1, l2, l3, l4]);
+
+      target.removeChangeListener(l4);
+      expect(target.listeners).equalsCollection([l1, l2, l3]);
+
+      target.removeChangeListener(l2);
+      expect(target.listeners).equalsCollection([l1, l3]);
+
+      target.removeChangeListener(l1);
+      expect(target.listeners).equalsCollection([l3]);
+
+      target.removeChangeListener(l3);
+      expect(target.listeners).equalsCollection([]);
+    });
+  });
+
+  test('fires immediately if no batch', () {
+    // If no batch is created, a summary should be automatically created and
+    // fired on each property change.
+    final target = new AbstractObservable();
+    EventSummary res = null;
+    target.addChangeListener((summary) {
+      expect(res).isNull();
+      res = summary;
+      expect(res).isNotNull();
+    });
+
+    target.recordPropertyUpdate('pM', 10, 11);
+
+    expect(res).isNotNull();
+    expect(res.events.length).equals(1);
+    validateUpdate(res.events[0], target, 'pM', null, 10, 11);
+    res = null;
+
+    target.recordPropertyUpdate('pL', '11', '13');
+
+    expect(res).isNotNull();
+    expect(res.events.length).equals(1);
+    validateUpdate(res.events[0], target, 'pL', null, '11', '13');
+  });
+}