Allow for reporting with the --list option

tools/testing/dart/test_configurations.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.
 
 library test_configurations;
 
 import "dart:async";
 import 'dart:io';
 import "dart:math" as math;
 
@@ skipping 206 matching lines @@
   void allTestsFinished() {
     for (var conf in configurations) {
       if (conf.containsKey('_servers_')) {
         conf['_servers_'].stopServers();
       }
     }
     DebugLogger.close();
   }
 
   var eventListener = [];
-  if (progressIndicator != 'silent') {
+
+  // We don't print progress if we list tests.
+  if (progressIndicator != 'silent' && !listTests) {
     var printFailures = true;
     var formatter = new Formatter();
     if (progressIndicator == 'color') {
       progressIndicator = 'compact';
       formatter = new ColorFormatter();
     }
     if (progressIndicator == 'diff') {
       progressIndicator = 'compact';
       formatter = new ColorFormatter();
       printFailures = false;
@@ skipping 16 matching lines @@
     eventListener.add(new SkippedCompilationsPrinter());
     eventListener.add(new LeftOverTempDirPrinter());
   }
   if (firstConf['write_test_outcome_log']) {
     eventListener.add(new TestOutcomeLogWriter());
   }
   if (firstConf['copy_coredumps']) {
     eventListener.add(new UnexpectedCrashDumpArchiver());
   }
 
-  eventListener.add(new ExitCodeSetter());
+  // The only progress indicator when listing tests should be the
+  // the summary printer.
+  if (listTests) {
+    eventListener.add(new SummaryPrinter());
+  } else {
+    eventListener.add(new ExitCodeSetter());
+  }
 
   void startProcessQueue() {
     // [firstConf] is needed here, since the ProcessQueue needs to know the
     // settings of 'noBatch' and 'local_ip'
     new ProcessQueue(firstConf,
                      maxProcesses,
                      maxBrowserProcesses,
                      startTime,
                      testSuites,
                      eventListener,
                      allTestsFinished,
                      verbose,
                      recordingPath,
                      recordingOutputPath);
   }
 
   // Start all the HTTP servers required before starting the process queue.
   if (serverFutures.isEmpty) {
     startProcessQueue();
   } else {
     Future.wait(serverFutures).then((_) => startProcessQueue());
   }
 }