Implement type checking of map literals (issue 221).

tests/language/src/MapLiteral1NegativeTest.dart

Index: tests/language/src/MapLiteral1NegativeTest.dart
===================================================================
--- tests/language/src/MapLiteral1NegativeTest.dart	(revision 0)
+++ tests/language/src/MapLiteral1NegativeTest.dart	(revision 0)
@@ -0,0 +1,22 @@
+// Copyright (c) 2011, 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.
+// VMOptions=--enable_type_checks
+//
+// Dart test program testing type checks in map literals.
+
+class MapLiteral1NegativeTest<T> {

[hausner, 2011/11/22 18:37:35]

Why does this class need a type parameter?

[regis, 2011/11/22 20:15:20]

It does not. Copy and paste error. Thanks. Done.

+  test() {
+    try {
+      var m = const <String>{"a": 0};  // 0 is not a String.
+    } catch (TypeError error) {
+    }
+  }
+}
+
+main() {
+  var t = new MapLiteral1NegativeTest<int>();
+  t.test();
+}
+
+