Make pub warning-clean.

utils/tests/pub/io_test.dart

 // Copyright (c) 2012, 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 io_test;
 
 import 'dart:io';
 
 import 'package:pathos/path.dart' as path;
 import 'package:unittest/unittest.dart';
@@ skipping 172 matching lines @@
      bool forFileSymlink,
      bool forMultiLevelFileSymlink,
      bool forDirectory,
      bool forDirectorySymlink,
      bool forMultiLevelDirectorySymlink,
      bool forBrokenSymlink,
      bool forMultiLevelBrokenSymlink}) {
   group(name, () {
     test('returns $forFile for a file', () {
       expect(withTempDir((temp) {
-        var path = path.join(temp, "test.txt");
-        writeTextFile(path, "contents");
-        expect(predicate(path), equals(forFile));
+        var file = path.join(temp, "test.txt");
+        writeTextFile(file, "contents");
+        expect(predicate(file), equals(forFile));
       }), completes);
     });
 
     test('returns $forDirectory for a directory', () {
       expect(withTempDir((temp) {
-        var path = path.join(temp, "dir");
-        createDir(path);
-        expect(predicate(path), equals(forDirectory));
+        var file = path.join(temp, "dir");
+        createDir(file);
+        expect(predicate(file), equals(forDirectory));
       }), completes);
     });
 
     test('returns $forDirectorySymlink for a symlink to a directory', () {
       expect(withTempDir((temp) {
         var targetPath = path.join(temp, "dir");
         var symlinkPath = path.join(temp, "linkdir");
         createDir(targetPath);
         return createSymlink(targetPath, symlinkPath).then((_) {
           expect(predicate(symlinkPath), equals(forDirectorySymlink));
@@ skipping 68 matching lines @@
           return createSymlink(targetPath, symlink1Path)
               .then((_) => createSymlink(symlink1Path, symlink2Path))
               .then((_) {
             expect(predicate(symlink2Path), equals(forMultiLevelFileSymlink));
           });
         }), completes);
       });
     }
   });
 }