dart2dart Fix default class unparse

tests/compiler/dart2js/unparser_test.dart

 // Copyright (c) 2012, 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('dart:uri');
 #import('parser_helper.dart');
 #import("../../../lib/compiler/compiler.dart");
 #import("../../../lib/compiler/implementation/tree/tree.dart");
 
 testUnparse(String statement) {
@@ skipping 371 matching lines @@
 ''';
   var expectedResult = @'topfoo(){}p_topfoo(){var x=5;}A getA()=> null;'
       @'main(){var a=new A(); a.foo(); var b=new p_A.fromFoo(); b.foo(); '
           @'var GREATVAR=b.myliba; b.mylist; a=getA(); p_topfoo(); topfoo();}'
       @'class p_A{p_A.fromFoo(){}List<p_A> mylist;num foo(){}A myliba;}'
       @'class A{foo(){}}';
   testDart2DartWithLibrary(mainSrc, librarySrc,
       (String result) { Expect.equals(expectedResult, result); });
 }
 
+testDefaultClassWithArgs() {
+  testDart2Dart('main(){var result=new IA<String>();}'
+      'interface IA<T> default A<T extends Object>{IA();}'
+      'class A<T extends Object> implements IA<T>{factory A(){}}');
+}
+
+testClassExtendsWithArgs() {
+  testDart2Dart('main(){new B<Object>();}'
+    'class A<T extends Object>{}'
+    'class B<T extends Object> extends A<T>{}');
+}
+
 testStaticInvocation() {
   testDart2Dart('main(){var x=Math.parseDouble("1");}');
 }
 
 main() {
   testSignedConstants();
   testGenericTypes();
   testForLoop();
   testEmptyList();
   testClosure();
   testIndexedOperatorDecl();
   testNativeMethods();
   testPrefixIncrements();
   testConstModifier();
   testStaticInvocation();
   testSimpleFileUnparse();
   testSimpleObjectInstantiation();
   testSimpleTopLevelClass();
   testClassWithSynthesizedConstructor();
   testClassWithMethod();
   testVariableDefinitions();
   testGetSet();
   testFactoryConstructor();
   testTopLevelField();
   testAbstractClass();
   testConflictLibraryClassRename();
   testNoConflictSendsRename();
   testConflictSendsRename();
+  testDefaultClassWithArgs();
+  testClassExtendsWithArgs();
 }