Typed array constructors with optional buffer offset and length.

client/tests/client/html/TypedArrays1Test.dart

Index: client/tests/client/html/TypedArrays1Test.dart
diff --git a/client/tests/client/html/TypedArrays1Test.dart b/client/tests/client/html/TypedArrays1Test.dart
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+++ b/client/tests/client/html/TypedArrays1Test.dart
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+// Copyright (c) 2012, 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('TypedArrays1Test');
+#import('../../../../lib/unittest/unittest_html.dart');
+#import('dart:dom');
+
+main() {
+
+  forLayoutTests();
+
+  test('createByLengthTest', () {
+      var a = new Float32Array(10);
+      Expect.equals(10, a.length);
+      Expect.equals(0, a[4]);
+  });
+
+  test('aliasTest', () {
+      var a1 = new Uint8Array.fromList([0,0,1,0x45]);
+      var a2 = new Float32Array.fromBuffer(a1.buffer);
+
+      Expect.equals(1, a2.length);
+
+      // 0x45010000 = 2048+16
+      Expect.equals(2048 + 16, a2[0]);
+
+      a1[2] = 0;
+      // 0x45000000 = 2048
+      Expect.equals(2048, a2[0]);
+
+      a1[3]--;
+      a1[2] += 128;
+      // 0x44800000 = 1024
+      Expect.equals(1024, a2[0]);
+
+  });
+
+  test('typeTests', () {
+      var a = new Float32Array(10);
+      Expect.isTrue(a is List);
+    });
+}