New testrunner that runs the test pipleine in an isolate.

utils/testrunner/run_process_task.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.
-
-/** A pipeline task to run a process and capture the output. */
-class RunProcessTask extends PipelineTask {
-  String _commandTemplate;
-  List _argumentTemplates;
-  int _timeout;
-
-  RunProcessTask(this._commandTemplate, this._argumentTemplates, this._timeout);
-
-  execute(Path testfile, List stdout, List stderr, bool logging,
-              Function exitHandler) {
-    var cmd = expandMacros(_commandTemplate, testfile);
-    List args = new List();
-    for (var i = 0; i < _argumentTemplates.length; i++) {
-      args.add(expandMacros(_argumentTemplates[i], testfile));
-    }
-
-    if (logging) {
-      stdout.add('Running $cmd ${Strings.join(args, " ")}');
-    }
-    var timer = null;
-    var process = Process.start(cmd, args);
-    process.onStart = () {
-      timer = new Timer(1000 * _timeout, (t) {
-        timer = null;
-        process.kill();
-      });
-    };
-    process.onExit = (exitCode) {
-      if (timer != null) {
-        timer.cancel();
-      }
-      process.close();
-      exitHandler(exitCode);
-    };
-    process.onError = (e) {
-      print("Error starting process:");
-      print("  Command: $cmd");
-      print("  Error: $e");
-      exitHandler(-1);
-    };
-
-    StringInputStream stdoutStringStream =
-        new StringInputStream(process.stdout);
-    StringInputStream stderrStringStream =
-        new StringInputStream(process.stderr);
-    stdoutStringStream.onLine = makeReadHandler(stdoutStringStream, stdout);
-    stderrStringStream.onLine = makeReadHandler(stderrStringStream, stderr);
-    return process;
-  }
-
-  Function makeReadHandler(StringInputStream source, List<String> destination) {
-    return () {
-      if (source.closed) return;
-      var line = source.readLine();
-      while (null != line) {
-        if (config.immediateOutput && line.startsWith('###')) {
-          _outStream.writeString(line.substring(3));
-          _outStream.writeString('\n');
-        } else {
-          destination.add(line);
-        }
-        line = source.readLine();
-      }
-    };
-  }
-}