Rename the package to "test".

lib/src/backend/platform_selector.dart

 // Copyright (c) 2015, 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 unittest.backend.platform_selector;
+library test.backend.platform_selector;
 
 import 'package:source_span/source_span.dart';
 
 import 'operating_system.dart';
 import 'platform_selector/ast.dart';
 import 'platform_selector/evaluator.dart';
 import 'platform_selector/parser.dart';
 import 'platform_selector/visitor.dart';
 import 'test_platform.dart';
 
 /// The set of all valid variable names.
 final _validVariables =
     new Set<String>.from(["posix", "dart-vm", "browser", "js", "blink"])
         ..addAll(TestPlatform.all.map((platform) => platform.identifier))
         ..addAll(OperatingSystem.all.map((os) => os.name));
 
 /// An expression for selecting certain platforms, including operating systems
 /// and browsers.
 ///
 /// The syntax is mostly Dart's expression syntax restricted to boolean
 /// operations. See [the README][] for full details.
 ///
-/// [the README]: https://github.com/dart-lang/unittest/#platform-selector-syntax
+/// [the README]: https://github.com/dart-lang/test/#platform-selector-syntax
 abstract class PlatformSelector {
   /// A selector that declares that a test can be run on all platforms.
   ///
   /// This isn't representable in the platform selector syntax but it is the
   /// default selector.
   static const all = const _AllPlatforms();
 
   /// Parses [selector].
   ///
   /// This will throw a [SourceSpanFormatException] if the selector is
@@ skipping 55 matching lines @@
 /// and it isn't done when parsing to avoid coupling the syntax too tightly to
 /// the semantics.
 class _VariableValidator extends RecursiveVisitor {
   const _VariableValidator();
 
   void visitVariable(VariableNode node) {
     if (_validVariables.contains(node.name)) return;
     throw new SourceSpanFormatException("Undefined variable.", node.span);
   }
 }