New testrunner that runs the test pipleine in an isolate.

utils/testrunner/layout_test_controller.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.
 
 // The following set of variables should be set by the caller that
 // #sources this file.
 /** Whether to include elapsed time. */
 bool includeTime;
 
 /** Path to DRT executable. */
 String drt;
 
 /** Whether to regenerate layout test files. */
 bool regenerate;
 
 /** Whether to output test summary. */
 bool summarize;
 
+/** Whether  to print results immediately as they come in. */
+bool immediate;
+
 /** Format strings to use for test result messages. */
 String passFormat, failFormat, errorFormat, listFormat;
 
 /** Location of the running test file. */
 String sourceDir;
 
 /** Path of the running test file. */
 String testfile;
 
 /** URL of the child test file. */
 String baseUrl;
 
+/** The print function to use. */
+Function tprint;
+
+/** A callback function to notify the caller we are done. */
+Function notifyDone;
+
 // Variable below here are local to this file.
 var passCount = 0, failCount = 0, errorCount = 0;
 Date start;
 
-void tprint(msg) {
-  print('###$msg');
-}
-
 class Macros {
   static const String testTime = '<TIME>';
   static const String testfile = '<FILENAME>';
   static const String testGroup = '<GROUPNAME>';
   static const String testDescription = '<TESTNAME>';
   static const String testMessage = '<MESSAGE>';
   static const String testStacktrace = '<STACK>';
 }
 
 String formatMessage(filename, groupname,
@@ skipping 57 matching lines @@
       tprint('$testFile: Top-level uncaught error: $uncaughtError');
     }
     tprint('$testFile: $passed PASSED, $failed FAILED, $errors ERRORS');
   }
 }
 
 complete() {
   if (summarize) {
     printSummary(testfile, passCount, failCount, errorCount);
   }
-  exit(failCount > 0 ? -1 : 0);
+  notifyDone(failCount > 0 ? -1 : 0);
 }
 
 runTextLayoutTest(testNum) {
   var url = '$baseUrl?test=$testNum';
   var stdout = new List();
   start = new Date.now();
   var process = Process.start(drt, [url]);
   StringInputStream stdoutStringStream = new StringInputStream(process.stdout);
   stdoutStringStream.onLine = () {
     if (stdoutStringStream.closed) return;
@@ skipping 148 matching lines @@
         break;
       }
       pos = idx;
     }
     if (label != null) {
       if (!done) error(start, label, 'Failed to parse output');
       runPixelLayoutTest(testNum + 1);
     }
   };
 }
+
+void init() {
+  // Get the name of the directory that has the expectation files
+  // (by stripping .dart suffix from test file path).
+  // Create it if it does not exist.
+  sourceDir = testfile.substring(0, testfile.length - 5);
+  if (regenerate) {
+    var d = new Directory(sourceDir);
+    if (!d.existsSync()) {
+      d.createSync();
+    }
+  }
+}
+
+void runPixelLayoutTests() {
+  init();
+  runPixelLayoutTest(0);
+}
+
+void runTextLayoutTests() {
+  init();
+  runTextLayoutTest(0);
+}
+