fixes #610, incorrect help output

test/worker/worker_test.dart

 // Copyright (c) 2016, 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.
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
 import 'package:bazel_worker/bazel_worker.dart';
 // TODO(jakemac): Remove once this is a part of the testing library.
 import 'package:bazel_worker/src/async_message_grouper.dart';
 import 'package:bazel_worker/testing.dart';
 import 'package:test/test.dart';
 
 main() {
   group('Hello World', () {
     final argsFile = new File('test/worker/hello_world.args').absolute;
     final inputDartFile = new File('test/worker/hello_world.dart').absolute;
     final outputJsFile = new File('test/worker/hello_world.js').absolute;
-    final executableArgs = ['bin/dartdevc.dart', 'compile',];
+    final executableArgs = ['bin/dartdevc.dart'];
     final compilerArgs = [
       '--no-source-map',
       '--no-summarize',
       '-o',
       outputJsFile.path,
       inputDartFile.path,
     ];
 
     setUp(() {
       inputDartFile.createSync();
@@ skipping 80 matching lines @@
       if (greetingDart.existsSync()) greetingDart.deleteSync();
       if (helloDart.existsSync()) helloDart.deleteSync();
       if (greetingJS.existsSync()) greetingJS.deleteSync();
       if (greetingSummary.existsSync()) greetingSummary.deleteSync();
       if (helloJS.existsSync()) helloJS.deleteSync();
     });
 
     test('can compile in basic mode', () {
       var result = Process.runSync('dart', [
         'bin/dartdevc.dart',
-        'compile',
         '--summary-extension=api.ds',
         '--no-source-map',
         '-o',
         greetingJS.path,
         greetingDart.path,
       ]);
       expect(result.exitCode, EXIT_CODE_OK);
       expect(result.stdout, isEmpty);
       expect(result.stderr, isEmpty);
       expect(greetingJS.existsSync(), isTrue);
       expect(greetingSummary.existsSync(), isTrue);
 
       result = Process.runSync('dart', [
         'bin/dartdevc.dart',
-        'compile',
         '--no-source-map',
         '--no-summarize',
         '--summary-extension=api.ds',
         '-s',
         greetingSummary.path,
         '-o',
         helloJS.path,
         helloDart.path,
       ]);
       expect(result.exitCode, EXIT_CODE_OK);
@@ skipping 17 matching lines @@
       expect(result.exitCode, 64);
       expect(
           result.stdout, contains('Please include the output file location.'));
       expect(result.stdout, isNot(contains('#0')));
     });
 
     test('compile errors', () {
       badFileDart.writeAsStringSync('main() => "hello world"');
       var result = Process.runSync('dart', [
         'bin/dartdevc.dart',
-        'compile',
         '--no-source-map',
         '-o',
         badFileJs.path,
         badFileDart.path,
       ]);
       expect(result.exitCode, 1);
       expect(result.stdout, contains("[error] Expected to find ';'"));
     });
   });
 
@@ skipping 13 matching lines @@
 
     tearDown(() {
       if (partFile.existsSync()) partFile.deleteSync();
       if (libraryFile.existsSync()) libraryFile.deleteSync();
       if (outJS.existsSync()) outJS.deleteSync();
     });
 
     test('works if part and library supplied', () {
       var result = Process.runSync('dart', [
         'bin/dartdevc.dart',
-        'compile',
         '--no-summarize',
         '--no-source-map',
         '-o',
         outJS.path,
         partFile.path,
         libraryFile.path,
       ]);
       expect(result.stdout, isEmpty);
       expect(result.stderr, isEmpty);
       expect(result.exitCode, 0);
       expect(outJS.existsSync(), isTrue);
     });
 
     test('works if part is not supplied', () {
       var result = Process.runSync('dart', [
         'bin/dartdevc.dart',
-        'compile',
         '--no-summarize',
         '--no-source-map',
         '-o',
         outJS.path,
         libraryFile.path,
       ]);
       expect(result.stdout, isEmpty);
       expect(result.stderr, isEmpty);
       expect(result.exitCode, 0);
       expect(outJS.existsSync(), isTrue);
     });
 
     test('part without library is silently ignored', () {
       var result = Process.runSync('dart', [
         'bin/dartdevc.dart',
-        'compile',
         '--no-summarize',
         '--no-source-map',
         '-o',
         outJS.path,
         partFile.path,
       ]);
       expect(result.stdout, isEmpty);
       expect(result.stderr, isEmpty);
       expect(result.exitCode, 0);
       expect(outJS.existsSync(), isTrue);
     });
   });
 }
 
 Future<WorkResponse> _readResponse(MessageGrouper messageGrouper) async {
   var buffer = (await messageGrouper.next) as List<int>;
   try {
     return new WorkResponse.fromBuffer(buffer);
   } catch (_) {
     var bufferAsString =
         buffer == null ? '' : 'String: ${UTF8.decode(buffer)}\n';
     throw 'Failed to parse response:\nbytes: $buffer\n$bufferAsString';
   }
 }