Fix Rectangle test with method name.

tests/lib/math/rectangle_test.dart

 // Copyright (c) 2013, 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.
 
 library rect_test;
 
 import 'dart:math';
 import 'package:unittest/unittest.dart';
 
 main() {
@@ skipping 56 matching lines @@
       var r1 = createRectangle(test[1]);
       var expected = createRectangle(test[2]);
 
       expect(r0.boundingBox(r1), expected);
       expect(r1.boundingBox(r0), expected);
     }
   });
 
   test('containsRectangle', () {
     var r = new Rectangle(-10, 0, 20, 10);
-    expect(r.contains(r), isTrue);
+    expect(r.containsRectangle(r), isTrue);
 
-    expect(r.contains(
+    expect(r.containsRectangle(
         new Rectangle(double.NAN, double.NAN, double.NAN, double.NAN)), isFalse);
 
     var r2 = new Rectangle(0, 2, 5, 5);
-    expect(r.contains(r2), isTrue);
-    expect(r2.contains(r), isFalse);
+    expect(r.containsRectangle(r2), isTrue);
+    expect(r2.containsRectangle(r), isFalse);
 
     r2 = new Rectangle(-11, 2, 5, 5);
-    expect(r.contains(r2), isFalse);
+    expect(r.containsRectangle(r2), isFalse);
     r2 = new Rectangle(0, 2, 15, 5);
-    expect(r.contains(r2), isFalse);
+    expect(r.containsRectangle(r2), isFalse);
     r2 = new Rectangle(0, 2, 5, 10);
-    expect(r.contains(r2), isFalse);
+    expect(r.containsRectangle(r2), isFalse);
     r2 = new Rectangle(0, 0, 5, 10);
-    expect(r.contains(r2), isTrue);
+    expect(r.containsRectangle(r2), isTrue);
   });
 
   test('containsPoint', () {
     var r = new Rectangle(20, 40, 60, 80);
 
     // Test middle.
     expect(r.containsPoint(new Point(50, 80)), isTrue);
 
     // Test edges.
     expect(r.containsPoint(new Point(20, 40)), isTrue);
@@ skipping 18 matching lines @@
 
   test('hashCode', () {
     var a = new Rectangle(0, 1, 2, 3);
     var b = new Rectangle(0, 1, 2, 3);
     expect(a.hashCode, b.hashCode);
 
     var c = new Rectangle(1, 0, 2, 3);
     expect(a.hashCode == c.hashCode, isFalse);
   });
 }