Add corelib tests

test/codegen/corelib/hash_set_type_check_test.dart

Index: test/codegen/corelib/hash_set_type_check_test.dart
diff --git a/test/codegen/corelib/hash_set_type_check_test.dart b/test/codegen/corelib/hash_set_type_check_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..1e21c95087f13830c600c75a6500c0220c9fca5e
--- /dev/null
+++ b/test/codegen/corelib/hash_set_type_check_test.dart
@@ -0,0 +1,50 @@
+// Copyright (c) 2015, 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 of hash set type checking.
+
+library hash_set_type_check_test;
+import "package:expect/expect.dart";
+import 'dart:collection';
+
+testSet(Set<String> newSet()) {
+  Set<String> s = newSet();
+  Expect.throws(() => s.add(1), (e) => e is Error);
+  Expect.isNull(s.lookup(1));
+}
+
+
+void testIdentitySet(Set create()) {
+  Set<String> s = create();
+  Expect.throws(() => s.add(1), (e) => e is Error);
+  Expect.isNull(s.lookup(1));
+}
+
+
+bool get inCheckedMode {
+  try {
+    var i = 1;
+    String j = i;
+  } catch (_) {
+    return true;
+  }
+  return false;
+}
+
+
+void main() {
+  if (!inCheckedMode) return;
+
+  testSet(() => new Set<String>());
+  testSet(() => new HashSet<String>());
+  testSet(() => new LinkedHashSet<String>());
+  testIdentitySet(() => new Set<String>.identity());
+  testIdentitySet(() => new HashSet<String>.identity());
+  testIdentitySet(() => new LinkedHashSet<String>.identity());
+  testIdentitySet(() => new HashSet<String>(equals: (x, y) => identical(x, y),
+                                    hashCode: (x) => identityHashCode(x)));
+  testIdentitySet(
+      () => new LinkedHashSet<String>(equals: (x, y) => identical(x, y),
+                              hashCode: (x) => identityHashCode(x)));
+}