New testrunner that runs the test pipleine in an isolate.

utils/testrunner/pipeline_runner.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 [PipelineRunner] represents the execution of our pipeline for
- * one test file.
- */
-class PipelineRunner {
-  /** The path of the test file. */
-  Path _path;
-
-  /** The pipeline template. */
-  List _pipelineTemplate;
-
-  /** String lists used to capture output. */
-  List _stdout;
-  List _stderr;
-
-  /** Whether the output should be verbose. */
-  bool _verbose;
-
-  /** Which stage of the pipeline is being executed. */
-  int _stageNum;
-
-  /** The handler to call when the pipeline is done. */
-  Function _completeHandler;
-
-  PipelineRunner(
-      this._pipelineTemplate,
-      String test,
-      this._verbose,
-      this._completeHandler) {
-    _path = new Path(test);
-    _stdout = new List();
-    _stderr = new List();
-  }
-
-  /** Kick off excution with the first stage. */
-  void execute() {
-    _runStage(_stageNum = 0);
-  }
-
-  /** Execute a stage of the pipeline. */
-  void _runStage(int stageNum) {
-    _pipelineTemplate[stageNum].
-        execute(_path, _stdout, _stderr, _verbose, _handleExit);
-  }
-
-  /**
-   * [_handleExit] is called at the end of each stage. It will execute the
-   * next stage or call the completion handler if all are done.
-   */
-  void _handleExit(int exitCode) {
-    int totalStages = _pipelineTemplate.length;
-    _stageNum++;
-    String suffix = _verbose ? ' (step $_stageNum of $totalStages)' : '';
-
-    if (_verbose && exitCode != 0) {
-      _stderr.add('Test failed$suffix, exit code $exitCode\n');
-    }
-
-    if (_stageNum == totalStages || exitCode != 0) { // Done with pipeline.
-      for (var i = 0; i < _stageNum; i++) {
-        _pipelineTemplate[i].cleanup(_path, _stdout, _stderr, _verbose,
-            config.keepTests);
-      }
-      completeHandler(makePathAbsolute(_path.toString()), exitCode,
-          _stdout, _stderr);
-    } else {
-      if (_verbose) {
-        _stdout.add('Finished $suffix\n');
-      }
-      _runStage(_stageNum);
-    }
-  }
-}