Add test directive to include other files used by a test in its compiled output directory.

tests/standalone/io/file_input_stream_test.dart

 // Copyright (c) 2013, 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.
 // Testing file input stream, VM-only, standalone test.
+//
+// OtherResources=readuntil_test.dat
+// OtherResources=readline_test1.dat
+// OtherResources=readline_test2.dat
 
 import "dart:convert";
 import "dart:io";
 
 import "package:async_helper/async_helper.dart";
 import "package:expect/expect.dart";
 
-// Helper method to be able to run the test from the runtime
-// directory, or the top directory.
 String getFilename(String path) {
-  var testPath = Platform.script.resolve('../../../$path');
-  return new File.fromUri(testPath).existsSync()
-      ? testPath.toFilePath()
-      : Platform.script.resolve('../../../runtime/$path').toFilePath();
+  return Platform.script.resolve(path).toFilePath();
 }
 
 void testStringLineSplitter() {
-  String fileName = getFilename("tests/standalone/io/readuntil_test.dat");
+  String fileName = getFilename("readuntil_test.dat");
   // File contains "Hello Dart\nwassup!\n"
   File file = new File(fileName);
   int linesRead = 0;
   var lineStream = file.openRead()
     .transform(UTF8.decoder)
     .transform(new LineSplitter());
   lineStream.listen((line) {
     linesRead++;
     if (linesRead == 1) {
       Expect.equals("Hello Dart", line);
     } else if (linesRead == 2) {
       Expect.equals("wassup!", line);
     } else {
       Expect.fail("More or less than 2 lines read ($linesRead lines read).");
     }
   });
 }
 
 
 void testOpenStreamAsync() {
   asyncStart();
-  String fileName = getFilename("tests/standalone/io/readuntil_test.dat");
+  String fileName = getFilename("readuntil_test.dat");
   // File contains "Hello Dart\nwassup!\n"
   var expected = "Hello Dart\nwassup!\n".codeUnits;
   var byteCount = 0;
   (new File(fileName)).openRead().listen(
       (d) => byteCount += d.length,
       onDone: () {
         Expect.equals(expected.length, byteCount);
         asyncEnd();
       });
 }
@@ skipping 172 matching lines @@
           error = true;
         });
   }
   test(-1, null);
   test(100, 99);
   test(null, -1);
 }
 
 
 void testStringLineSplitterEnding(String name, int length) {
-  String fileName = getFilename("tests/standalone/io/$name");
+  String fileName = getFilename(name);
   // File contains 10 lines.
   File file = new File(fileName);
   Expect.equals(length, file.lengthSync());
   var lineStream = file.openRead()
     .transform(UTF8.decoder)
     .transform(new LineSplitter());
   int lineCount = 0;
   lineStream.listen(
       (line) {
         lineCount++;
@@ skipping 15 matching lines @@
   testInputStreamDelete();
   testInputStreamAppend();
   testInputStreamOffset();
   testInputStreamBadOffset();
   // Check the length of these files as both are text files where one
   // is without a terminating line separator which can easily be added
   // back if accidentally opened in a text editor.
   testStringLineSplitterEnding("readline_test1.dat", 111);
   testStringLineSplitterEnding("readline_test2.dat", 114);
 }