- Add an extension test which throws from native code.

tests/standalone/io/test_extension_fail_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.
+//
+// Dart test program for testing native extensions.
+
+#import('dart:io');
+
+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 getExtensionPath(Path buildDirectory) {
+  switch (Platform.operatingSystem) {
+    case 'linux':
+      return buildDirectory.append('lib.target/libtest_extension.so');
+    case 'macos':
+      return buildDirectory.append('libtest_extension.dylib');
+    case 'windows':
+      return buildDirectory.append('test_extension.dll');
+    default:
+      Expect.fail('Unknown operating system ${Platform.operatingSystem}');
+  }
+}
+
+void main() {
+  Options options = new Options();
+
+  Path scriptDirectory = new Path.fromNative(options.script).directoryPath;
+  Path buildDirectory = new Path.fromNative(options.executable).directoryPath;
+  Directory tempDirectory = new Directory('').createTempSync();
+  Path testDirectory = new Path.fromNative(tempDirectory.path);
+
+  // Copy test_extension shared library, test_extension.dart and
+  // test_extension_fail_tester.dart to the temporary test directory.
+  copyFileToDirectory(getExtensionPath(buildDirectory),
+                      testDirectory).chain((_) {
+    Path extensionDartFile = scriptDirectory.append('test_extension.dart');
+    return copyFileToDirectory(extensionDartFile, testDirectory);
+  }).chain((_) {
+    Path testExtensionTesterFile =
+        scriptDirectory.append('test_extension_fail_tester.dart');
+    return copyFileToDirectory(testExtensionTesterFile, testDirectory);
+  }).chain((_) {
+    Path script = testDirectory.append('test_extension_fail_tester.dart');
+    return Process.run(options.executable, [script.toNativePath()]);
+  })..then((ProcessResult result) {
+    print("ERR: ${result.stderr}\n\n");
+    print("OUT: ${result.stdout}\n\n");
+    Expect.equals(255, result.exitCode);
+    Expect.isTrue(result.stderr.contains("Unhandled exception:\nball\n"));
+    tempDirectory.deleteSync(recursive: true);
+  })..handleException((_) {
+    tempDirectory.deleteSync(recursive: true);
+  });
+}