test.py: First step towards support of caching dart2js compilations across runtimes

tests/standalone/io/skipping_dart2js_compilations_test.dart

 // 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.
 
 /*
  * This test makes sure that the "skipping Dart2Js compilations if the output is
  * already up to date" feature does work as it should.
  * Therefore this test ensures that compilations are only skipped if the last
  * modified date of the output of a dart2js compilation is newer than
  *   - the the dart application to compile (including it's dependencies)
@@ skipping 104 matching lines @@
     return file.readAsStringSync();
   }
 
   File _createFile(Path path) {
     var file = new File(path.toNativePath());
     file.createSync();
     return file;
   }
 }
 
-class TestCompletedHandler {
+class CommandCompletedHandler {
   FileUtils fileUtils;
   DateTime _expectedTimestamp;
   bool _shouldHaveRun;
 
-  TestCompletedHandler(FileUtils this.fileUtils, bool this._shouldHaveRun);
+  CommandCompletedHandler(FileUtils this.fileUtils, bool this._shouldHaveRun);
 
-  void processCompletedTest(runner.TestCase testCase) {
-    var output = testCase.lastCommandOutput;
-
-    Expect.isFalse(output.unexpectedOutput);
+  void processCompletedTest(CommandOutput output) {
+    Expect.isTrue(output.exitCode == 0);
     Expect.isTrue(output.stderr.length == 0);
     if (_shouldHaveRun) {
       Expect.isTrue(output.stdout.length == 0);
       Expect.isTrue(new File(fileUtils.scriptOutputPath.toNativePath())
           .existsSync());
     } else {
       Expect.isFalse(new File(fileUtils.scriptOutputPath.toNativePath())
           .existsSync());
     }
   }
 }
 
-runner.TestCase makeTestCase(String testName, FileUtils fileUtils) {
+runner.Command makeCompilationCommand(String testName, FileUtils fileUtils) {
   var config = new options.TestOptionsParser().parse(['--timeout', '2'])[0];
   var createFileScript = join(dirname(Platform.script),
       'skipping_dart2js_compilations_helper.dart');
   var executable = Platform.executable;
   var arguments = [createFileScript, fileUtils.scriptOutputPath.toNativePath()];
   var bootstrapDeps = [
       Uri.parse("file://${fileUtils.testSnapshotFilePath}")];
-  var commands = [new runner.CompilationCommand(
+  return runner.CommandBuilder.instance.getCompilationCommand(
       'dart2js',
       fileUtils.testJsFilePath.toNativePath(),
       false,
       bootstrapDeps,
       executable,
-      arguments)];
-  return new runner.TestCase(
-      testName,
-      commands,
-      config,
-      (_) {},
-      new Set<String>.from([status.PASS]));
+      arguments,
+      'ReleaseIA32');
 }
 
 void main() {
   var fs_noTestJs = new FileUtils(createJs: false,
                                   createJsDeps: true,
                                   createDart: true,
                                   createSnapshot: true);
   var fs_noTestJsDeps = new FileUtils(createJs: true,
                                       createJsDeps: false,
                                       createDart: true,
@@ skipping 27 matching lines @@
     fs_notUpToDate_dart.cleanup();
     fs_upToDate.cleanup();
   }
 
   void touchFilesAndRunTests() {
     fs_notUpToDate_snapshot.touchFile(fs_notUpToDate_snapshot.testSnapshot);
     fs_notUpToDate_dart.touchFile(fs_notUpToDate_dart.testDart);
     fs_upToDate.touchFile(fs_upToDate.testJs);
 
     Future runTest(String name, FileUtils fileUtils, bool shouldRun) {
-      var completedHandler = new TestCompletedHandler(fileUtils, shouldRun);
-      var testCase = makeTestCase(name, fileUtils);
-      var process = new runner.RunningProcess(testCase, testCase.commands[0]);
-      return process.start().then((_) {
-        completedHandler.processCompletedTest(testCase);
+      var completedHandler = new CommandCompletedHandler(fileUtils, shouldRun);
+      var command = makeCompilationCommand(name, fileUtils);
+      var process = new runner.RunningProcess(command, 60);
+      return process.run().then((CommandOutput output) {
+        completedHandler.processCompletedTest(output);
       });
     }
     // We run the tests in sequence, so that if one of them failes we clean up
     // everything and throw.
     runTest("fs_noTestJs", fs_noTestJs, true).then((_) {
       return runTest("fs_noTestJsDeps", fs_noTestJsDeps, true);
     }).then((_) {
       return runTest("fs_noTestDart", fs_noTestDart, true);
     }).then((_) {
       return runTest("fs_noTestSnapshot", fs_noTestSnapshot, true);
@@ skipping 10 matching lines @@
       cleanup();
       throw error;
     }).then((_) {
       cleanup();
     });
   }
   // We need to wait some time to make sure that the files we 'touch' get a
   // bigger timestamp than the old ones
   new Timer(new Duration(seconds: 1), touchFilesAndRunTests);
 }