test.dart: add support for compiling multiple scripts for a single test.

tools/testing/dart/test_progress.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_progress");
 
 #import("dart:io");
 #import("test_runner.dart");
 #import("test_suite.dart");
 
@@ skipping 120 matching lines @@
         output.add(s);
       }
     }
     if (!test.output.stderr.isEmpty()) {
       output.add('');
       output.add('stderr:');
       for (var s in test.output.stderr) {
         output.add(s);
       }
     }
-    if (test is BrowserTestCase && test.dynamic.compilerPath != null) {
+    for (Command c in test.commands) {
       output.add('');
-      output.add('Compilation command: ${test.dynamic.compilerPath} ' +
-                 Strings.join(test.dynamic.compilerArguments, ' '));
+      String message = (c == test.commands.last()
+          ? "Command line" : "Compilation command");
+      output.add('$message: ${c.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);
     }
@@ skipping 62 matching lines @@
       // Clear progress indicator before printing summary report.
       stdout.write(
           '\r                                               \r'.charCodes());
       SummaryReport.printReport();
     }
     _allTestsKnown = true;
   }
 
   void _printStartProgress(TestCase test) => _printProgress();
   void _printDoneProgress(TestCase test) => _printProgress();
-  
+
   abstract void _printProgress();
 }
 
 
 class CompactProgressIndicator extends CompactIndicator {
   CompactProgressIndicator(Date startTime, bool printTiming)
       : super(startTime, printTiming);
 
   void _printProgress() {
     var percent = ((_completedTests() / _foundTests) * 100).toInt().toString();
@@ skipping 101 matching lines @@
     var status = 'pass';
     if (test.output.unexpectedOutput) {
       status = 'fail';
     }
     var percent = ((_completedTests() / _foundTests) * 100).toInt().toString();
     print('Done ${test.configurationString} ${test.displayName}: $status');
     print('@@@STEP_CLEAR@@@');
     print('@@@STEP_TEXT@ $percent% +$_passedTests -$_failedTests @@@');
   }
 }