Check proper resynthesis of type parameters of generic methods.

pkg/analyzer/test/src/summary/resynthesize_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 test.src.serialization.elements_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/dart/element/element.dart';
@@ skipping 319 matching lines @@
     expect(resynthesized.parameters.length, original.parameters.length);
     for (int i = 0; i < resynthesized.parameters.length; i++) {
       compareParameterElements(
           resynthesized.parameters[i],
           original.parameters[i],
           '$desc parameter ${original.parameters[i].name}');
     }
     compareTypes(
         resynthesized.returnType, original.returnType, '$desc return type');
     compareTypes(resynthesized.type, original.type, desc);
+    expect(resynthesized.typeParameters.length, original.typeParameters.length);
+    for (int i = 0; i < resynthesized.typeParameters.length; i++) {
+      compareTypeParameterElements(
+          resynthesized.typeParameters[i],
+          original.typeParameters[i],
+          '$desc type parameter ${original.typeParameters[i].name}');
+    }
   }
 
   void compareExportElements(ExportElementImpl resynthesized,
       ExportElementImpl original, String desc) {
     compareUriReferencedElements(resynthesized, original, desc);
     expect(resynthesized.exportedLibrary.location,
         original.exportedLibrary.location);
     expect(resynthesized.combinators.length, original.combinators.length);
     for (int i = 0; i < resynthesized.combinators.length; i++) {
       compareNamespaceCombinators(
@@ skipping 52 matching lines @@
     for (int i = 0; i < resynthesized.combinators.length; i++) {
       compareNamespaceCombinators(
           resynthesized.combinators[i], original.combinators[i]);
     }
   }
 
   void compareMethodElements(MethodElementImpl resynthesized,
       MethodElementImpl original, String desc) {
     // TODO(paulberry): do we need to deal with
     // MultiplyInheritedMethodElementImpl?
-    // TODO(paulberry): compare type parameters for generic methods.
     compareExecutableElements(resynthesized, original, desc);
   }
 
   void compareNamespaceCombinators(
       NamespaceCombinator resynthesized, NamespaceCombinator original) {
     if (original is ShowElementCombinatorImpl &&
         resynthesized is ShowElementCombinatorImpl) {
       expect(resynthesized.shownNames, original.shownNames);
     } else if (original is HideElementCombinatorImpl &&
         resynthesized is HideElementCombinatorImpl) {
@@ skipping 1788 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }