Optionally use Fasta with the new analysis driver.

pkg/analyzer/test/src/dart/analysis/driver_test.dart

 // Copyright (c) 2016, 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.driver;
 
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 698 matching lines @@
     {
       await scheduler.waitForIdle();
       expect(allResults, hasLength(1));
       AnalysisResult result = allResults[0];
       expect(result.path, testFile);
       expect(_getTopLevelVarType(result.unit, 'V'), 'int');
     }
 
     // Update the file, but don't notify the driver.
     allResults.clear();
-    provider.updateFile(testFile, 'var V = 1.2');
+    provider.updateFile(testFile, 'var V = 1.2;');
 
     // No new results.
     await pumpEventQueue();
     expect(allResults, isEmpty);
 
     // Notify the driver about the change.
     driver.changeFile(testFile);
 
     // The file was added, so it is scheduled for analysis.
     expect(driver.test.fileTracker.isFilePending(testFile), isTrue);
@@ skipping 733 matching lines @@
     expect(await driver.getSourceKind(path), SourceKind.PART);
   }
 
   test_getTopLevelNameDeclarations() async {
     var a = _p('/test/lib/a.dart');
     var b = _p('/test/lib/b.dart');
     var c = _p('/test/lib/c.dart');
     var d = _p('/test/lib/d.dart');
 
     provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'export "a.dart", class B {}');
+    provider.newFile(b, 'export "a.dart"; class B {}');
     provider.newFile(c, 'import "d.dart"; class C {}');
     provider.newFile(d, 'class D {}');
 
     driver.addFile(a);
     driver.addFile(b);
     driver.addFile(c);
     // Don't add d.dart, it is referenced implicitly.
 
     _assertTopLevelDeclarations(
         await driver.getTopLevelNameDeclarations('A'), [a, b], [false, true]);
@@ skipping 891 matching lines @@
    * Return the [provider] specific path for the given Posix [path].
    */
   String _p(String path) => provider.convertPath(path);
 
   static String _md5(String content) {
     return hex.encode(md5.convert(UTF8.encode(content)).bytes);
   }
 }
 
 class _SourceMock extends TypedMock implements Source {}