dart:io | Add test for HttpClient requests that never complete their future.

tests/standalone/io/https_unauthorized_client.dart

Index: tests/standalone/io/https_unauthorized_client.dart
diff --git a/tests/standalone/io/https_unauthorized_client.dart b/tests/standalone/io/https_unauthorized_client.dart
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+++ b/tests/standalone/io/https_unauthorized_client.dart
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+// 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.
+
+// Client that makes HttpClient secure gets from a server that replies with
+// a certificate that can't be authenticated.  This checks that all the
+// futures returned from these connection attempts complete (with errors).
+
+import "dart:async";
+import "dart:io";
+
+class ExpectException implements Exception {
+  ExpectException(this.message);
+  String toString() => "ExpectException: $message";
+  String message;
+}
+
+void expect(condition) {
+  if (!condition) {
+    throw new ExpectException('');
+  }
+}
+
+const HOST_NAME = "localhost";
+
+Future runClients(int port) {
+  HttpClient client = new HttpClient();
+
+  var testFutures = [];
+  for (int i = 0; i < 20; ++i) {
+    testFutures.add(
+        client.getUrl(Uri.parse('https://$HOST_NAME:$port/'))
+          .then((HttpClientRequest request) {
+            expect(false);
+          }, onError: (e) {
+            expect(e is HandshakeException || e is SocketException);
+          }));
+  }
+  return Future.wait(testFutures);
+}
+
+void main() {
+  final args = new Options().arguments;
+  SecureSocket.initialize();
+  runClients(int.parse(args[0]))
+    .then((_) => print('SUCCESS'));
+}