Add a nothing descriptor to scheduled_test.

pkg/scheduled_test/lib/src/descriptor/utils.dart

 // Copyright (c) 2013, 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 descriptor.utils;
 
 import 'dart:io';
 
 import 'package:pathos/path.dart' as path;
 
 /// Returns a single filesystem entry within [parent] whose name matches
 /// [pattern]. If [pattern] is a string, looks for an exact match; otherwise,
 /// looks for an entry that contains [pattern].
 ///
 /// If there are no entries in [parent] matching [pattern], or more than one,
 /// this will throw an exception.
 ///
 /// [type] is used for error reporting. It should be capitalized.
 String entryMatchingPattern(String type, String parent, Pattern pattern) {
   if (pattern is String) {
     var fullPath = path.join(parent, pattern);
     if (new File(fullPath).existsSync() || new Directory(fullPath).existsSync()) {
       return fullPath;
     }
     throw "$type not found: '$fullPath'.";
   }
 
   var matchingEntries = new Directory(parent).listSync()
       .map((entry) => entry is File ? entry.fullPathSync() : entry.path)
-      .where((entry) => entry.contains(pattern))
+      .where((entry) => path.basename(entry).contains(pattern))
       .toList();
   matchingEntries.sort();
 
   if (matchingEntries.length == 0) {
     throw "No entry found in '$parent' matching ${describePattern(pattern)}.";
   } else if (matchingEntries.length > 1) {
     throw "Multiple entries found in '$parent' matching "
           "${describePattern(pattern)}:\n"
       "${matchingEntries.map((entry) => '* $entry').join('\n')}";
   } else {
     return matchingEntries.first;
   }
 }
 
 /// Returns a human-readable description of [pattern].
 String describePattern(Pattern pattern) {
   if (pattern is String) return "'$pattern'";
   if (pattern is! RegExp) return '$pattern';
 
   var flags = new StringBuffer();
   if (!pattern.isCaseSensitive) flags.add('i');
   if (pattern.isMultiLine) flags.add('m');
   return '/${pattern.pattern}/$flags';
 }