Add corelib tests

test/codegen/corelib/collection_from_test.dart

Index: test/codegen/corelib/collection_from_test.dart
diff --git a/test/codegen/corelib/collection_from_test.dart b/test/codegen/corelib/collection_from_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..2766887cc84cd1d81734f83d34d7680095782f81
--- /dev/null
+++ b/test/codegen/corelib/collection_from_test.dart
@@ -0,0 +1,40 @@
+// 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.
+
+library collection.from.test;
+import "package:expect/expect.dart";
+import 'dart:collection' show Queue;
+
+class CollectionFromTest {
+  static testMain() {
+    var set = new Set<int>();
+    set.add(1);
+    set.add(2);
+    set.add(4);
+    check(set, new List<int>.from(set));
+    check(set, new List.from(set));
+    check(set, new Queue<int>.from(set));
+    check(set, new Queue.from(set));
+    check(set, new Set<int>.from(set));
+    check(set, new Set.from(set));
+  }
+
+
+  static check(Iterable initial, Iterable other) {
+    Expect.equals(3, initial.length);
+    Expect.equals(initial.length, other.length);
+
+    int initialSum = 0;
+    int otherSum = 0;
+
+    initial.forEach((e) { initialSum += e; });
+    other.forEach((e) { otherSum += e; });
+    Expect.equals(4 + 2 + 1, otherSum);
+    Expect.equals(otherSum, initialSum);
+  }
+}
+
+main() {
+  CollectionFromTest.testMain();
+}