Move package:testing to SDK.

pkg/testing/lib/src/stdio_process.dart

+// Copyright (c) 2016, 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.md file.
+
+library testing.stdio_process;
+
+import 'dart:async' show
+    Future,
+    Timer;
+
+import 'dart:convert' show
+    UTF8;
+
+import 'dart:io' show
+    Process,
+    ProcessSignal;
+
+import 'chain.dart' show
+    Result;
+
+class StdioProcess {
+  final int exitCode;
+
+  final String output;
+
+  StdioProcess(this.exitCode, this.output);
+
+  Result<int> toResult({int expected: 0}) {
+    if (exitCode == expected) {
+      return new Result<int>.pass(exitCode);
+    } else {
+      return new Result<int>.fail(exitCode, output);
+    }
+  }
+
+  static Future<StdioProcess> run(
+      String executable, List<String> arguments,
+      {String input, Duration timeout: const Duration(seconds: 60)}) async {
+    Process process = await Process.start(executable, arguments);
+    Timer timer;
+    StringBuffer sb = new StringBuffer();
+    timer = new Timer(timeout, () {
+      sb.write("Process timed out: ");
+      sb.write(executable);
+      sb.write(" ");
+      sb.writeAll(arguments, " ");
+      sb.writeln();
+      sb.writeln("Sending SIGTERM to process");
+      process.kill();
+      timer = new Timer(const Duration(seconds: 10), () {
+        sb.writeln("Sending SIGKILL to process");
+        process.kill(ProcessSignal.SIGKILL);
+      });
+    });
+    if (input != null) {
+      process.stdin.write(input);
+    }
+    Future closeFuture = process.stdin.close();
+    Future<List<String>> stdoutFuture =
+        process.stdout.transform(UTF8.decoder).toList();
+    Future<List<String>> stderrFuture =
+        process.stderr.transform(UTF8.decoder).toList();
+    int exitCode = await process.exitCode;
+    timer.cancel();
+    sb.writeAll(await stdoutFuture);
+    sb.writeAll(await stderrFuture);
+    await closeFuture;
+    return new StdioProcess(exitCode, "$sb");
+  }
+}