Add summary of failures to end of test.dart output.

tools/testing/dart/test_progress.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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.
 
 #library("test_progress");
 
 #import("test_runner.dart");
 #import("test_suite.dart");
 
 class ProgressIndicator {
-  ProgressIndicator(this._startTime, this._printTiming) : _tests = [];
+  ProgressIndicator(this._startTime, this._printTiming)
+      : _tests = [], _failureSummary = [];
 
   factory ProgressIndicator.fromName(String name,
                                      Date startTime,
                                      bool printTiming) {
     switch (name) {
       case 'compact':
         return new CompactProgressIndicator(startTime, printTiming);
       case 'color':
         return new ColorProgressIndicator(startTime, printTiming);
       case 'line':
@@ skipping 45 matching lines @@
       });
       for (int i = 0; i < 20 && i < _tests.length; i++) {
         var name = _tests[i].displayName;
         var duration = _tests[i].output.time;
         print('${duration} - $name');
       }
     }
   }
 
   void allDone() {
+    _printFailureSummary();
     _printStatus();
     _printTimingInformation();
     exit(_failedTests > 0 ? 1 : 0);
   }
 
   abstract _printStartProgress(TestCase test);
   abstract _printDoneProgress(TestCase test);
 
   String _pad(String s, int length) {
     StringBuffer buffer = new StringBuffer();
@@ skipping 14 matching lines @@
     }
   }
 
   String _timeString(Duration d) {
     var min = d.inMinutes;
     var sec = d.inSeconds % 60;
     return '${_padTime(min)}:${_padTime(sec)}';
   }
 
   void _printFailureOutput(TestCase test) {
-    print('\nFAILED: ${test.displayName}');
+    List<String> output = new List<String>();
+    output.add('');
+    output.add('FAILED: ${test.displayName}');
     StringBuffer expected = new StringBuffer();
     expected.add('Expected: ');
     for (var expectation in test.expectedOutcomes) {
       expected.add('$expectation ');
     }
-    print(expected.toString());
-    print('Actual: ${test.output.result}');
+    output.add(expected.toString());
+    output.add('Actual: ${test.output.result}');
     if (!test.output.stdout.isEmpty()) {
-      print('\nstdout:');
-      test.output.stdout.forEach((s) => print(s));
+      output.add('');
+      output.add('stdout:');
+      for (var s in test.output.stdout) {
+        output.add(s);
+      }
     }
     if (!test.output.stderr.isEmpty()) {
-      print('\nstderr:');
-      test.output.stderr.forEach((s) => print(s));
+      output.add('');
+      output.add('stderr:');
+      for (var s in test.output.stderr) {
+        output.add(s);
+      }
     }
     if (test is BrowserTestCase && test.dynamic.compilerPath != null) {
-      print('\nCompilation command: ${test.dynamic.compilerPath} ' +
-            Strings.join(test.dynamic.compilerArguments, ' '));
+      output.add('');
+      output.add('Compilation command: ${test.dynamic.compilerPath} ' +
+                 Strings.join(test.dynamic.compilerArguments, ' '));
     }
-    print('\nCommand line: ${test.commandLine}');
+    output.add('');
+    output.add('Command line: ${test.commandLine}');
+
+    for (String line in output) {
+      print(line);
+    }
+    _failureSummary.addAll(output);
+  }
+
+  void _printFailureSummary() {
+    for (String line in _failureSummary) {
+      print(line);
+    }
+    print('');
   }
 
   void _printStatus() {
     if (_failedTests == 0) {
       print('\n===');
       print('=== All tests succeeded');
       print('===\n');
     } else {
       var pluralSuffix = _failedTests != 1 ? 's' : '';
       print('\n===');
       print('=== ${_failedTests} test$pluralSuffix failed');
       print('===\n');
     }
   }
 
   int _completedTests() => _passedTests + _failedTests;
 
   int _foundTests = 0;
   int _passedTests = 0;
   int _failedTests = 0;
   bool _allTestsKnown = false;
   Date _startTime;
   bool _printTiming;
   List<TestCase> _tests;
+  List<String> _failureSummary;
 }
 
 
 class CompactIndicator extends ProgressIndicator {
   CompactIndicator(Date startTime, bool printTiming)
       : super(startTime, printTiming);
 
   void allDone() {
     stdout.write('\n'.charCodes());
+    _printFailureSummary();
     _printTimingInformation();
+    if (_failedTests > 0) {
+      // We may have printed many failure logs, so reprint the summary data.
+      _printProgress();
+      print('');
+    }
     stdout.close();
     exit(_failedTests > 0 ? 1 : 0);
   }
 
   void allTestsKnown() {
     if (!_allTestsKnown) {
       // Clear progress indicator before printing summary report.
       stdout.write(
           '\r                                               \r'.charCodes());
       SummaryReport.printReport();
@@ skipping 118 matching lines @@
     var status = 'pass';
     if (test.output.unexpectedOutput) {
       status = 'fail';
     }
     var percent = ((_completedTests() / _foundTests) * 100).toInt().toString();
     print('Done ${test.displayName}: $status');
     print('@@@STEP_CLEAR@@@');
     print('@@@STEP_TEXT@ $percent% +$_passedTests -$_failedTests @@@');
   }
 }