Add support for generic function type syntax, part 1

pkg/analyzer/test/src/task/dart_test.dart

 // 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.
 
 library analyzer.test.src.task.dart_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
@@ skipping 4523 matching lines @@
     // validate
     CompilationUnit unit = outputs[RESOLVED_UNIT4];
     FunctionTypeAlias nodeF = unit.declarations[0];
     // but 'T extends String' is resolved
     _assertTypeParameterBound(
         nodeF.typeParameters.typeParameters[0], 'String', 'String');
   }
 
   void _assertTypeParameterBound(TypeParameter typeParameter,
       String expectedBoundTypeString, String expectedBoundElementName) {
-    TypeName boundNode = typeParameter.bound;
+    TypeAnnotation bound = typeParameter.bound;
+    // TODO(brianwilkerson) Extend this to support function types as bounds.
+    expect(bound, new isInstanceOf<TypeName>());
+    TypeName boundNode = bound;
     Identifier boundName = boundNode.name;
     expect(boundNode.type.toString(), expectedBoundTypeString);
     expect(boundName.staticType.toString(), expectedBoundTypeString);
     expect(resolutionMap.staticElementForIdentifier(boundName).displayName,
         expectedBoundElementName);
   }
 }
 
 @reflectiveTest
 class ResolveUnitTaskTest extends _AbstractDartTaskTest {
@@ skipping 1171 matching lines @@
   /**
    * Fill [errorListener] with [result] errors in the current [task].
    */
   void _fillErrorListener(ResultDescriptor<List<AnalysisError>> result) {
     List<AnalysisError> errors = task.outputs[result] as List<AnalysisError>;
     expect(errors, isNotNull, reason: result.name);
     errorListener = new GatheringErrorListener();
     errorListener.addAll(errors);
   }
 }