Fix TypedDataBuffer.insertAll() with an Iterable.

test/typed_buffers_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.
 
 // Tests typed-data buffer classes.
 
 import "dart:typed_data";
 
 import "package:test/test.dart";
 import "package:typed_data/typed_buffers.dart";
@@ skipping 91 matching lines @@
           buffer.insertAll(0, source, 1, 4);
           expect(buffer, equals([2, 3, 4, 6, 7, 8, 9, 10]));
 
           buffer.insertAll(3, source, 4);
           expect(buffer, equals([2, 3, 4, 5, 6, 7, 8, 9, 10]));
 
           buffer.insertAll(5, source, 0, 1);
           expect(buffer, equals([2, 3, 4, 5, 6, 1, 7, 8, 9, 10]));
         });
 
+        // Regression test for #1.
+        test("inserts values into the buffer after removeRange()", () {
+          buffer.removeRange(1, 4);
+          buffer.insertAll(1, source);
+          expect(buffer, equals([6, 1, 2, 3, 4, 5, 10]));
+        });
+
         test("does nothing for empty slices", () {
           buffer.insertAll(1, source, 0, 0);
           expect(buffer, equals([6, 7, 8, 9, 10]));
 
           buffer.insertAll(2, source, 3, 3);
           expect(buffer, equals([6, 7, 8, 9, 10]));
 
           buffer.insertAll(3, source, 5);
           expect(buffer, equals([6, 7, 8, 9, 10]));
 
@@ skipping 397 matching lines @@
   bool matches(item, Map matchState) {
     if (item is! Int32x4) return false;
     Int32x4 value = item;
     return result.x == value.x && result.y == value.y &&
            result.z == value.z && result.w == value.w;
   }
 
   Description describe(Description description) =>
       description.add('Int32x4.==');
 }