Redo "Redo "Use TypedArray.set for setRange of between similarly typed lists implemented as TypedAr…

tests/lib/typed_data/setRange_3_test.dart

Index: tests/lib/typed_data/setRange_3_test.dart
diff --git a/tests/lib/typed_data/setRange_3_test.dart b/tests/lib/typed_data/setRange_3_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..9774811d5c1c971783c80e4cb811e48c58ca3f58
--- /dev/null
+++ b/tests/lib/typed_data/setRange_3_test.dart
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+// 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.
+
+import 'setRange_lib.dart';
+import 'package:expect/expect.dart';
+import 'dart:typed_data';
+
+expandContractTest() {
+  // Copying between views that have different element sizes can't be done with
+  // a single scan-up or scan-down.
+  //
+  // Typed lists a1 and a2 share a buffer as follows:
+  //
+  // a1:  aaaabbbbccccddddeeeeffffgggghhhh
+  // a2:              abcdefgh
+
+  var a1 = new Int32List(8);
+  var buffer = a1.buffer;
+  var a2 = new Int8List.view(buffer, 12, 8);
+
+  initialize(a2);
+  Expect.equals('[1, 2, 3, 4, 5, 6, 7, 8]', '$a2');
+  a1.setRange(0, 8, a2);
+  Expect.equals('[1, 2, 3, 4, 5, 6, 7, 8]', '$a1');
+
+  initialize(a1);
+  Expect.equals('[1, 2, 3, 4, 5, 6, 7, 8]', '$a1');
+  a2.setRange(0, 8, a1);
+  Expect.equals('[1, 2, 3, 4, 5, 6, 7, 8]', '$a2');
+}
+
+main() {
+  expandContractTest();
+}