Refactor List.setRange function.

tests/standalone/typed_data_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.
 //
 // Dart test program for testing typed data.
 
 // Library tag to be able to run in html test framework.
 library TypedDataTest;
 
 import "package:expect/expect.dart";
@@ skipping 143 matching lines @@
   }
 
   typed_data[0] = 20;
   typed_data[1] = 21;
   typed_data[2] = 22;
   list.setRange(0, 3, typed_data);
   for (int i = 0; i < 3; i++) {
     Expect.equals(20 + i, list[i]);
   }
 
-  typed_data.setRange(1, 2, const [8, 9]);
+  typed_data.setRange(1, 3, const [8, 9]);
   Expect.equals(20, typed_data[0]);
   Expect.equals(8, typed_data[1]);
   Expect.equals(9, typed_data[2]);
 }
 
 void testSetRange() {
   testSetRangeHelper(new Uint8List(3));
   testSetRangeHelper(new Uint8List.transferable(3));
   testSetRangeHelper(new Uint8ClampedList(3));
   testSetRangeHelper(new Uint8ClampedList.transferable(3));
 }
 
 void testIndexOutOfRangeHelper(typed_data) {
   List<int> list = const [0, 1, 2, 3];
 
   Expect.throws(() {
     typed_data.setRange(0, 4, list);
   });
 
   Expect.throws(() {
-    typed_data.setRange(3, 1, list);
+    typed_data.setRange(3, 4, list);
   });
 }
 
 void testIndexOutOfRange() {
   testIndexOutOfRangeHelper(new Uint8List(3));
   testIndexOutOfRangeHelper(new Uint8List.transferable(3));
   testIndexOutOfRangeHelper(new Uint8ClampedList(3));
   testIndexOutOfRangeHelper(new Uint8ClampedList.transferable(3));
 }
 
@@ skipping 197 matching lines @@
     testGetAtIndex(float64list, 1.4260258159703532e-105);
   }
   testTypedDataRange(true);
   testUnsignedTypedDataRange(true);
   testExternalClampedUnsignedTypedDataRange(true);
   testViewCreation();
   testWhere();
   testCreationFromList();
 }