[dart:io] Namespaces for file IO

tests/standalone/io/directory_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.
 //
 // Directory listing test.
 
 import "dart:async";
 import "dart:io";
 
 import "package:async_helper/async_helper.dart";
@@ skipping 354 matching lines @@
         for (Directory t in tempDirs) {
           Expect.isTrue(t.existsSync());
           t.deleteSync();
           Expect.isFalse(t.existsSync());
         }
         asyncEnd();
       });
     }
   }
 
+  static void testCreateTempRelative() {
+    String template = 'dart_relative_temp_dir';
+    Directory base = new Directory('tmp');
+    base.createSync();
+    Expect.isTrue(base.existsSync());
+    try {
+      Directory tmp = base.createTempSync(template);
+      Expect.isTrue(tmp.existsSync());
+      Directory tmpCurrent = Directory.current.createTempSync(template);
+      Expect.isTrue(tmpCurrent.existsSync());
+      tmpCurrent.deleteSync();
+    } finally {
+      base.deleteSync(recursive: true);
+    }
+  }
+
   static void testCreateSystemTemp() {
     String template = 'dart_system_temp_dir';
     asyncStart();
     Future.wait([
       Directory.systemTemp.createTemp(template),
       Directory.systemTemp.createTemp(template)
     ]).then((tempDirs) {
       Expect.notEquals(tempDirs[0].path, tempDirs[1].path);
       for (Directory t in tempDirs) {
         Expect.isTrue(t.existsSync());
@@ skipping 52 matching lines @@
     testDeleteNonExistentSync();
     testDeleteTooLongNameSync();
     testExistsCreateDelete();
     testExistsCreateDeleteSync();
     testDeleteLinkSync();
     testDeleteLinkAsFileSync();
     testDeleteBrokenLinkAsFileSync();
     testListBrokenLinkSync();
     testListLinkSync();
     testCreateTemp();
+    testCreateTempRelative();
     testCreateSystemTemp();
     testCreateDeleteTemp();
     testCurrent();
     testEquals();
   }
 }
 
 class NestedTempDirectoryTest {
   List<Directory> createdDirectories;
   Directory current;
@@ skipping 162 matching lines @@
   DirectoryTest.testMain();
   NestedTempDirectoryTest.testMain();
   testCreateTempErrorSync();
   testCreateTempError();
   testCreateExistingSync();
   testCreateExisting();
   testCreateDirExistingFileSync();
   testCreateDirExistingFile();
   testRename();
 }