Improve type test and type equality for generics (issue 15148).

tests/language/const_list_test.dart

 // 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.
 
 import "package:expect/expect.dart";
 
 class ConstListTest {
 
   static testMain() {
     List fixedList = new List(4);
@@ skipping 16 matching lines @@
     Expect.equals(4, growableList.removeLast());
     Expect.equals(false, fixedList == growableList);
     fixedList[3] = 0;
     Expect.equals(false, fixedList == growableList);
     var a = [1, 2, 3.1];
     var b = [1, 2, 3.1];
     Expect.equals(false, a == b);
     a = const [1, 2, 3.1];
     b = const [1, 2, 3.1];
     Expect.equals(true, a == b);
+    a = const <num>[1, 2, 3.1];
+    b = const [1, 2, 3.1];
+    Expect.equals(false, a == b);
+    a = const <dynamic>[1, 2, 3.1];
+    b = const [1, 2, 3.1];
+    Expect.equals(true, a == b);
   }
 }
 
 main() {
   ConstListTest.testMain();
 }