Move all tests using dart:io to a separate directory

tests/standalone/src/io/FileTest.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.
 //
 // Dart test program for testing file I/O.
 
 #import("dart:io");
 #import("dart:isolate");
 
 class MyListOfOneElement implements List {
@@ skipping 870 matching lines @@
   static void testReadAsText() {
     var port = new ReceivePort.singleShot();
     port.receive((result, replyTo) {
       Expect.equals(1, result);
     });
     var name = getFilename("tests/vm/data/fixed_length_file");
     var f = new File(name);
     f.readAsText('UTF-8', (text) {
       Expect.isTrue(text.endsWith("42 bytes."));
       Expect.equals(42, text.length);
-      var name = getDataFilename("tests/standalone/src/read_as_text.dat");
+      var name = getDataFilename("tests/standalone/src/io/read_as_text.dat");
       var f = new File(name);
       f.onError = (e) => Expect.fail("No errors expected");
       f.readAsText('UTF-8', (text) {
         Expect.equals(6, text.length);
         var expected = [955, 120, 46, 32, 120, 10];
         Expect.listEquals(expected, text.charCodes());
         f.readAsText('ISO-8859-1', (text) {
           Expect.equals(7, text.length);
           var expected = [206, 187, 120, 46, 32, 120, 10];
           Expect.listEquals(expected, text.charCodes());
           f.onError = (e) {
             port.toSendPort().send(1);
           };
           f.readAsText('ASCII', (text) {
             Expect.fail("Non-ascii char should cause error");
           });
         });
       });
     });
     f.onError = (e) {
       Expect.fail("No errors expected: $e");
     };
   }
 
   static void testReadAsTextSync() {
     var name = getFilename("tests/vm/data/fixed_length_file");
     var text = new File(name).readAsTextSync();
     Expect.isTrue(text.endsWith("42 bytes."));
     Expect.equals(42, text.length);
-    name = getDataFilename("tests/standalone/src/read_as_text.dat");
+    name = getDataFilename("tests/standalone/src/io/read_as_text.dat");
     text = new File(name).readAsTextSync();
     Expect.equals(6, text.length);
     var expected = [955, 120, 46, 32, 120, 10];
     Expect.listEquals(expected, text.charCodes());
     Expect.throws(() { new File(name).readAsTextSync("ASCII"); });
     text = new File(name).readAsTextSync("ISO-8859-1");
     expected = [206, 187, 120, 46, 32, 120, 10];
     Expect.equals(7, text.length);
     Expect.listEquals(expected, text.charCodes());
   }
@@ skipping 16 matching lines @@
     };
   }
 
   static void testReadAsLinesSync() {
     var name = getFilename("tests/vm/data/fixed_length_file");
     var lines = new File(name).readAsLinesSync();
     Expect.equals(1, lines.length);
     var line = lines[0];
     Expect.isTrue(line.endsWith("42 bytes."));
     Expect.equals(42, line.length);
-    name = getDataFilename("tests/standalone/src/readline_test1.dat");
+    name = getDataFilename("tests/standalone/src/io/readline_test1.dat");
     lines = new File(name).readAsLinesSync();
     Expect.equals(10, lines.length);
   }
 
 
   static void testReadAsErrors() {
     var port = new ReceivePort.singleShot();
     port.receive((message, _) {
       Expect.equals(1, message);
     });
@@ skipping 107 matching lines @@
       testWriteVariousLists();
       testDirectory();
       testDirectorySync();
     });
   }
 }
 
 main() {
   FileTest.testMain();
 }