Incremental compiler: support optional arguments.

dart/tests/try/web/incremental_compilation_update_test.dart

 // Copyright (c) 2014, 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 trydart.incremental_compilation_update_test;
 
 import 'dart:html' hide
     Element;
 
 import 'dart:async' show
@@ skipping 1065 matching lines @@
     print(instance.x);
   } catch (e) {
     print('getter threw');
   }
 }
 """,
             const <String>['setter threw', 'getter threw']),
     ],
 
     // Test that named arguments can be called.
-    // TODO(ahe): This test doesn't pass yet, see expectation below.
     const <ProgramResult>[
         const ProgramResult(
             r"""
 class C {
   foo({a, named: 'v1', x}) {
     print(named);
   }
 }
 
 var instance;
 
 main() {
   if (instance == null) {
     print('instance is null');
     instance = new C();
   }
-  try {
-    instance.foo();
-  } catch (e) {
-    // TODO(ahe): This try/catch shouldn't be necessary.
-    print('threw');
-  }
+  instance.foo();
 }
 """,
             const <String>['instance is null', 'v1']),
         const ProgramResult(
             r"""
 class C {
   foo({a, named: 'v1', x}) {
     print(named);
   }
 }
 
 var instance;
 
 main() {
   if (instance == null) {
     print('instance is null');
     instance = new C();
   }
-  try {
-    instance.foo(named: 'v2');
-  } catch (e) {
-    // TODO(ahe): This try/catch shouldn't be necessary.
-    print('threw');
-  }
+  instance.foo(named: 'v2');
 }
 """,
-            const <String>['threw']), // TODO(ahe): Expect 'v2'.
+            const <String>['v2']),
     ],
 
     // Test than named arguments can be called.
-    // TODO(ahe): This test doesn't pass yet, see expectation below.
     const <ProgramResult>[
         const ProgramResult(
             r"""
 class C {
   foo({a, named: 'v2', x}) {
     print(named);
   }
 }
 
 var instance;
 
 main() {
   if (instance == null) {
     print('instance is null');
     instance = new C();
   }
-  try {
-    instance.foo(named: 'v1');
-  } catch (e) {
-    // TODO(ahe): This try/catch shouldn't be necessary.
-    print('threw');
-  }
+  instance.foo(named: 'v1');
 }
 """,
             const <String>['instance is null', 'v1']),
         const ProgramResult(
             r"""
 class C {
   foo({a, named: 'v2', x}) {
     print(named);
   }
 }
 
 var instance;
 
 main() {
   if (instance == null) {
     print('instance is null');
     instance = new C();
   }
-  try {
-    instance.foo();
-  } catch (e) {
-    // TODO(ahe): This try/catch shouldn't be necessary.
-    print('threw');
-  }
+  instance.foo();
 }
 """,
-            const <String>['threw']),
+            const <String>['v2']),
     ],
 
     // Test that an instance tear-off with named parameters can be called.
-    // TODO(ahe): This test doesn't pass yet, see expectation below.
     const <ProgramResult>[
         const ProgramResult(
             r"""
 class C {
   foo({a, named: 'v1', x}) {
     print(named);
   }
 }
 
 var closure;
 
 main() {
   if (closure == null) {
     print('closure is null');
     closure = new C().foo;
   }
-  try {
-    closure();
-  } catch (e) {
-    // TODO(ahe): This try/catch shouldn't be necessary.
-    print('threw');
-  }
+  closure();
 }
 """,
             const <String>['closure is null', 'v1']),
         const ProgramResult(
             r"""
 class C {
   foo({a, named: 'v1', x}) {
     print(named);
   }
 }
 
 var closure;
 
 main() {
   if (closure == null) {
     print('closure is null');
     closure = new C().foo;
   }
-  try {
-    closure(named: 'v2');
-  } catch (e) {
-    // TODO(ahe): This try/catch shouldn't be necessary.
-    print('threw');
-  }
+  closure(named: 'v2');
 }
 """,
-            const <String>['threw']), // TODO(ahe): Expect 'v2'.
+            const <String>['v2']),
     ],
 
 /*
     // Test that a lazy static is supported.
     // TODO(ahe): This test doesn't pass yet.
     const <ProgramResult>[
         const ProgramResult(
             r"""
 var normal;
 
@@ skipping 270 matching lines @@
   position: absolute;
   left: 0px;
   width: 3em;
   text-align: right;
   background-color: lightgoldenrodyellow;
 }
 ''');
   style.type = 'text/css';
   return style;
 }