test rename overhaul: step 13 - samples

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

-// 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.
-
-testObservableValue() {
-  test('ObservableValue', () {
-    final value = new ObservableValue<String>('initial');
-    expect(value.value).equals('initial');
-
-    // Set value.
-    value.value = 'new';
-    expect(value.value).equals('new');
-
-    // Change event is sent when value is changed.
-    EventSummary result = null;
-    value.addChangeListener((summary) {
-      expect(result).isNull();
-      result = summary;
-      expect(result).isNotNull();
-    });
-
-    value.value = 'newer';
-
-    expect(result).isNotNull();
-    expect(result.events.length).equals(1);
-    validateUpdate(result.events[0], value, 'value', null, 'newer', 'new');
-  });
-
-  test('does not raise event if unchanged', () {
-    final value = new ObservableValue<String>('foo');
-    expect(value.value).equals('foo');
-
-    bool called = false;
-    value.addChangeListener((summary) { called = true; });
-
-    // Set it to the same value.
-    value.value = 'foo';
-
-    // Should not have gotten an event.
-    expect(called).equals(false);
-  });
-}