Fix analyzer tests.

pkg/analyzer/test/generated/gn_test.dart

 // Copyright (c) 2017, 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.generated.gn_test;
 
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/generated/gn.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:test/test.dart';
@@ skipping 13 matching lines @@
 
   void test_resolve() {
     _addResources([
       '/workspace/.jiri_root/',
       '/workspace/out/debug-x87_128/gen/dart.sources/',
       '/workspace/some/code/',
       '/workspace/a/source/code.dart',
     ]);
     provider.newFile(
         _p('/workspace/out/debug-x87_128/gen/dart.sources/flutter'),
-        '/workspace/a/source');
+        _p('/workspace/a/source'));
     _setUp();
     _assertResolve(
         'package:flutter/code.dart', '/workspace/a/source/code.dart');
   }
 
   void test_resolveDoesNotExist() {
     _addResources([
       '/workspace/.jiri_root/',
       '/workspace/out/debug-x87_128/gen/dart.sources/',
       '/workspace/some/code/',
       '/workspace/a/source/code.dart',
     ]);
     provider.newFile(
         _p('/workspace/out/debug-x87_128/gen/dart.sources/flutter'),
-        '/workspace/a/source');
+        _p('/workspace/a/source'));
     _setUp();
     expect(
         resolver.resolveAbsolute(Uri.parse('package:bogus/code.dart')), null);
   }
 
   void _addResources(List<String> paths) {
     for (String path in paths) {
       if (path.endsWith('/')) {
         provider.newFolder(_p(path.substring(0, path.length - 1)));
       } else {
@@ skipping 63 matching lines @@
 }
 
 class _BaseTest {
   final MemoryResourceProvider provider = new MemoryResourceProvider();
 
   /**
    * Return the [provider] specific path for the given Posix [path].
    */
   String _p(String path) => provider.convertPath(path);
 }