Support for pixel layout tests.

utils/testrunner/standard_test_runner.dart

Index: utils/testrunner/standard_test_runner.dart
===================================================================
--- utils/testrunner/standard_test_runner.dart	(revision 0)
+++ utils/testrunner/standard_test_runner.dart	(revision 0)
@@ -0,0 +1,278 @@
+// 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.
+
+/** Whether to include elapsed time. */
+bool includeTime;
+
+/** 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 listFormat, passFormat, failFormat, errorFormat;
+
+/** Path of the running test file. */
+String testfile;
+
+/** The filters must be set by the caller. */
+List includeFilters;
+List excludeFilters;
+
+/** The print function to use. */
+Function tprint;
+
+/** A callback function to notify the caller we are done. */
+Function notifyDone;
+
+/** The action function to use. */
+Function action;
+
+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>';
+}
+
+class TestRunnerConfiguration extends unittest.Configuration {
+  get name => 'Minimal test runner configuration';
+  get autoStart => false;
+
+  String formatMessage(filename, groupname,
+      [ testname = '', testTime = '', result = '',
+        message = '', stack = '' ]) {
+    var format = errorFormat;
+    if (result == 'pass') format = passFormat;
+    else if (result == 'fail') format = failFormat;
+    return format.
+        replaceAll(Macros.testTime, testTime).
+        replaceAll(Macros.testfile, filename).
+        replaceAll(Macros.testGroup, groupname).
+        replaceAll(Macros.testDescription, testname).
+        replaceAll(Macros.testMessage, message).
+        replaceAll(Macros.testStacktrace, stack);
+  }
+
+  String elapsed(unittest.TestCase t) {
+    if (includeTime) {
+      double duration = t.runningTime.inMilliseconds.toDouble();
+      duration /= 1000;
+      return '${duration.toStringAsFixed(3)}s ';
+    } else {
+      return '';
+    }
+  }
+
+  void dumpTestResult(source, unittest.TestCase t) {
+    var groupName = '', testName = '';
+    var idx = t.description.lastIndexOf('###');
+    if (idx >= 0) {
+        groupName = t.description.substring(0, idx).replaceAll('###', ' ');
+        testName = t.description.substring(idx+3);
+    } else {
+        testName = t.description;
+    }
+    var stack = (t.stackTrace == null) ? '' : '${t.stackTrace} ';
+    var message = (t.message.length > 0) ? '${t.message} ' : '';
+    var duration = elapsed(t);
+    tprint(formatMessage(source, '$groupName ', '$testName ',
+        duration, t.result, message, stack));
+  }
+
+  void onTestResult(unittest.TestCase testCase) {
+    if (immediate) {
+      dumpTestResult('$testfile ', testCase);
+    }
+  }
+
+  void printSummary(int passed, int failed, int errors,
+                    [String uncaughtError = '']) {
+    tprint('');
+    if (passed == 0 && failed == 0 && errors == 0) {
+      tprint('$testfile: No tests found.');
+    } else if (failed == 0 && errors == 0 && uncaughtError == null) {
+      tprint('$testfile: All $passed tests passed.');
+    } else {
+      if (uncaughtError != null) {
+        tprint('$testfile: Top-level uncaught error: $uncaughtError');
+      }
+      tprint('$testfile: $passed PASSED, $failed FAILED, $errors ERRORS');
+    }
+  }
+
+  void onDone(int passed, int failed, int errors,
+              List<unittest.TestCase> results,
+              String uncaughtError) {
+    var success = (passed > 0 && failed == 0 && errors == 0 &&
+        uncaughtError == null);
+    if (!immediate) {
+      for (final testCase in results) {
+        dumpTestResult('$testfile ', testCase);
+      }
+    }
+    if (summarize) {
+      printSummary(passed, failed, errors, uncaughtError);
+    }
+    if (notifyDone != null) {
+      notifyDone(success ? 0 : -1);
+    }
+  }
+}
+
+// Support for listing tests and groups. We use a minimal config.
+class MinimalTestRunnerConfiguration extends unittest.Configuration {
+  get name => 'Minimal test runner configuration';
+  get autoStart => false;
+}
+
+String formatListMessage(filename, groupname, [ testname = '']) {
+  return listFormat.
+      replaceAll(Macros.testfile, filename).
+      replaceAll(Macros.testGroup, groupname).
+      replaceAll(Macros.testDescription, testname);
+}
+
+listGroups() {
+  List tests = unittest.testCases;
+  Map groups = {};
+  for (var t in tests) {
+    var groupName, testName = '';
+    var idx = t.description.lastIndexOf('###');
+    if (idx >= 0) {
+      groupName = t.description.substring(0, idx).replaceAll('###', ' ');
+      if (!groups.containsKey(groupName)) {
+        groups[groupName] = '';
+      }
+    }
+  }
+  for (var g in groups.getKeys()) {
+    var msg = formatListMessage('$testfile ', '$g ');
+    print('###$msg');
+  }
+}
+
+listTests() {
+  List tests = unittest.testCases;
+  for (var t in tests) {
+    var groupName, testName = '';
+    var idx = t.description.lastIndexOf('###');
+    if (idx >= 0) {
+      groupName = t.description.substring(0, idx).replaceAll('###', ' ');
+      testName = t.description.substring(idx+3);
+    } else {
+      groupName = '';
+      testName = t.description;
+    }
+    var msg = formatListMessage('$testfile ', '$groupName ', '$testName ');
+    print('###$msg');
+  }
+}
+
+// Support for running in isolates.
+
+class TestRunnerChildConfiguration extends unittest.Configuration {
+  get name => 'Test runner child configuration';
+  get autoStart => false;
+
+  void onDone(int passed, int failed, int errors,
+              List<unittest.TestCase> results, String uncaughtError) {
+    unittest.TestCase test = results[0];
+    parentPort.send([test.result, test.runningTime.inMilliseconds,
+                     test.message, test.stackTrace]);
+  }
+}
+
+var parentPort;
+var childTestMain;
+runChildTest() {
+  port.receive((testName, sendport) {
+    parentPort = sendport;
+    unittest.configure(new TestRunnerChildConfiguration());
+    unittest.groupSep = '###';
+    unittest.group('', childTestMain);
+    unittest.filterTests(testName);
+    unittest.runTests();
+  });
+}
+
+var testNum;
+var failed;
+var errors;
+var passed;
+
+runParentTest() {
+  var tests = unittest.testCases;
+  tests[testNum].startTime = new Date.now();
+  SendPort childPort = spawnFunction(runChildTest);
+  childPort.call(tests[testNum].description).then((results) {
+    var result = results[0];
+    var duration = new Duration(milliseconds: results[1]);
+    var message = results[2];
+    var stack = results[3];
+    if (result == 'pass') {
+      tests[testNum].pass();
+      ++passed;
+    } else if (result == 'fail') {
+      tests[testNum].fail(message, stack);
+      ++failed;
+    } else {
+      tests[testNum].error(message, stack);
+      ++errors;
+    }
+    tests[testNum].runningTime = duration;
+    ++testNum;
+    if (testNum < tests.length) {
+      runParentTest();
+    } else {
+      unittest.config.onDone(passed, failed, errors,
+          unittest.testCases, null);
+    }
+  });
+}
+
+runIsolateTests() {
+  testNum = 0;
+  passed = failed = errors = 0;
+  runParentTest();
+}
+
+// Main
+
+filterTest(t) {
+  var name = t.description.replaceAll("###", " ");
+  if (includeFilters.length > 0) {
+    for (var f in includeFilters) {
+      if (name.indexOf(f) >= 0) return true;
+    }
+    return false;
+  } else if (excludeFilters.length > 0) {
+    for (var f in excludeFilters) {
+      if (name.indexOf(f) >= 0) return false;
+    }
+    return true;
+  } else {
+    return true;
+  }
+}
+
+runTests(testMain) {
+  childTestMain = testMain;
+  unittest.groupSep = '###';
+  unittest.configure(new TestRunnerConfiguration());
+  unittest.group('', testMain);
+  // Do any user-specified test filtering.
+  unittest.filterTests(filterTest);
+  if (action == null) {
+    unittest.runTests();
+  } else {
+    action();
+  }
+}