Validate incremental resolutions results if requested.

pkg/analyzer/test/generated/incremental_resolver_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 engine.incremental_resolver_test;
 
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
@@ skipping 2271 matching lines @@
     expect(success, isTrue);
     List<AnalysisError> newErrors = analysisContext.getErrors(source).errors;
     // resolve "newCode" from scratch
     CompilationUnit fullNewUnit;
     {
       source = addSource(newCode);
       _runTasks();
       LibraryElement library = resolve(source);
       fullNewUnit = resolveCompilationUnit(source, library);
     }
-    assertSameResolution(unit, fullNewUnit, fail);
+    try {
+      assertSameResolution(unit, fullNewUnit);
+    } on IncrementalResolutionMismatch catch (mismatch) {
+      fail(mismatch.message);
+    }
     // errors
     List<AnalysisError> newFullErrors =
         analysisContext.getErrors(source).errors;
     _assertEqualErrors(newErrors, newFullErrors);
     // prepare for the next cycle
     code = newCode;
   }
 
   void _resolveUnit(String code) {
     this.code = code;
@@ skipping 803 matching lines @@
     ChangeNotice notice = analysisResult.changeNotices[0];
     expect(notice.compilationUnit, same(newUnit));
     // Resolve "newCode" from scratch.
     if (compareWithFull) {
       _resetWithIncremental(false);
       source = addSource(newCode);
       _runTasks();
       LibraryElement library = resolve(source);
       CompilationUnit fullNewUnit = resolveCompilationUnit(source, library);
       // Validate that "incremental" and "full" units have the same resolution.
-      assertSameResolution(newUnit, fullNewUnit, fail);
+      try {
+        assertSameResolution(newUnit, fullNewUnit, validateTypes: true);
+      } on IncrementalResolutionMismatch catch (mismatch) {
+        fail(mismatch.message);
+      }
       _assertEqualTokens(newUnit, fullNewUnit);
       List<AnalysisError> newFullErrors =
           analysisContext.getErrors(source).errors;
       _assertEqualErrors(newErrors, newFullErrors);
       // TODO(scheglov) check line info
     }
   }
 
   static void _assertEqualToken(Token incrToken, Token fullToken) {
     expect(incrToken.type, fullToken.type);
@@ skipping 270 matching lines @@
   }
 }
 
 
 class _Edit {
   final int offset;
   final int length;
   final String replacement;
   _Edit(this.offset, this.length, this.replacement);
 }