dart:io | Add automated testing for samples/sample_extension to buildbot.

samples/tests/samples/standalone/sample_extension_test.dart

Index: samples/tests/samples/standalone/sample_extension_test.dart
diff --git a/samples/tests/samples/standalone/sample_extension_test.dart b/samples/tests/samples/standalone/sample_extension_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..f95791fa25a01379588b3806c194ce231a89cd2d
--- /dev/null
+++ b/samples/tests/samples/standalone/sample_extension_test.dart
@@ -0,0 +1,71 @@
+// 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.
+//
+// Dart test program for testing native extensions.
+
+import "package:expect/expect.dart";
+import 'dart:async';
+import 'dart:io';
+import 'dart:isolate';
+
+Future copyFileToDirectory(Path file, Path directory) {
+  String src = file.toNativePath();
+  String dst = directory.toNativePath();
+  switch (Platform.operatingSystem) {
+    case 'linux':
+    case 'macos':
+      return Process.run('cp', [src, dst]);
+    case 'windows':
+      return Process.run('cmd.exe', ['/C', 'copy $src $dst']);
+    default:
+      Expect.fail('Unknown operating system ${Platform.operatingSystem}');
+  }
+}
+
+Path getNativeLibraryPath(Path buildDirectory) {
+  switch (Platform.operatingSystem) {
+    case 'linux':
+      return buildDirectory.append('lib.target/libsample_extension.so');
+    case 'macos':
+      return buildDirectory.append('libsample_extension.dylib');
+    case 'windows':
+      return buildDirectory.append('sample_extension.dll');
+    default:
+      Expect.fail('Unknown operating system ${Platform.operatingSystem}');
+  }
+}
+
+void main() {
+  Path scriptDirectory = new Path(Platform.script).directoryPath;
+  Path buildDirectory = new Path(Platform.executable).directoryPath;
+  Directory tempDirectory = new Directory('').createTempSync();
+  Path testDirectory = new Path(tempDirectory.path);
+  Path sourceDirectory = scriptDirectory.append('../../../sample_extension');
+
+  // Copy sample_extension shared library, sample_extension dart files and
+  // sample_extension tests to the temporary test directory.
+  copyFileToDirectory(getNativeLibraryPath(buildDirectory), testDirectory)
+  .then((_) => Future.forEach(['sample_synchronous_extension.dart',
+                               'sample_asynchronous_extension.dart',
+                               'test_sample_synchronous_extension.dart',
+                               'test_sample_asynchronous_extension.dart'],
+    (file) => copyFileToDirectory(sourceDirectory.append(file), testDirectory)
+  ))
+
+  .then((_) => Future.forEach(['test_sample_synchronous_extension.dart',
+                               'test_sample_asynchronous_extension.dart'],
+    (test) => Process.run(Platform.executable,
+                          [testDirectory.append(test).toNativePath()])
+    .then((ProcessResult result) {
+      if (result.exitCode != 0) {
+        print('Failing test: ${sourceDirectory.append(test).toNativePath()}');
+        print('Failing process stdout: ${result.stdout}');
+        print('Failing process stderr: ${result.stderr}');
+        print('End failing process stderr');
+        Expect.fail('Test failed with exit code ${result.exitCode}');
+      }
+    })
+  ))
+  .whenComplete(() => tempDirectory.deleteSync(recursive: true));
+}