Support test named arguments.

lib/metatest.dart

 // Copyright (c) 2014, 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.
 
 /// A test library for testing test libraries? We must go deeper.
 ///
 /// Since unit testing code tends to use a lot of global state, it can be tough
 /// to test. This library manages it by running each test case in a child
 /// isolate, then reporting the results back to the parent isolate.
 library metatest;
 
 import 'dart:async';
-import 'dart:isolate';
 
 // TODO(nweiz): Stop importing from src when dart-lang/test#48 is fixed.
 import 'package:test/src/backend/declarer.dart';
 import 'package:test/src/backend/live_test.dart';
 import 'package:test/src/backend/state.dart';
 import 'package:test/src/backend/suite.dart';
 import 'package:test/src/runner/engine.dart';
 import 'package:test/test.dart';
 
 /// Declares a test with the given [description] and [body].
 ///
 /// [body] corresponds to the `main` method of a test file. By default, this
 /// expects that all tests defined in [body] pass, but if [passing] is passed,
 /// only tests listed there are expected to pass.
-void expectTestsPass(String description, void body(), {List<String> passing}) {
+void expectTestsPass(String description, void body(), {List<String> passing,
+    String testOn, Timeout timeout, skip, Map<String, dynamic> onPlatform}) {
   _setUpTest(description, body, (liveTests) {
     if (passing == null) {
       if (liveTests.any(
           (liveTest) => liveTest.state.result != Result.success)) {
         fail('Expected all tests to pass, but some failed:\n'
             '${_summarizeTests(liveTests)}');
       }
       return;
     }
 
     var shouldPass = new Set.from(passing);
     var didPass = new Set.from(liveTests
         .where((liveTest) => liveTest.state.result == Result.success)
         .map((liveTest) => liveTest.test.name));
 
     if (!shouldPass.containsAll(didPass) ||
         !didPass.containsAll(shouldPass)) {
       stringify(tests) => '{${tests.map((t) => '"$t"').join(', ')}}';
 
       fail('Expected exactly ${stringify(shouldPass)} to pass, but '
           '${stringify(didPass)} passed.\n'
           '${_summarizeTests(liveTests)}');
     }
-  });
+  }, testOn: testOn, timeout: timeout, skip: skip, onPlatform: onPlatform);
 }
 
 /// Asserts that all tests defined by [body] fail.
 ///
 /// [body] corresponds to the `main` method of a test file.
-void expectTestsFail(String description, body()) {
-  expectTestsPass(description, body, passing: []);
+void expectTestsFail(String description, body(), {String testOn,
+    Timeout timeout, skip, Map<String, dynamic> onPlatform}) {
+  expectTestsPass(description, body, passing: [], testOn: testOn,
+      timeout: timeout, skip: skip, onPlatform: onPlatform);
 }
 
 /// Sets up a test with the given [description] and [body]. After the test runs,
 /// calls [validate] with the result map.
 void _setUpTest(String description, void body(),
-    void validate(List<LiveTest> liveTests)) {
+    void validate(List<LiveTest> liveTests), {String testOn, Timeout timeout,
+    skip, Map<String, dynamic> onPlatform}) {
   test(description, () async {
     var declarer = new Declarer();
     runZoned(body, zoneValues: {#test.declarer: declarer});
 
     var engine = new Engine.withSuites([new Suite(declarer.tests)]);
     for (var test in engine.liveTests) {
       test.onPrint.listen(print);
     }
     await engine.run();
 
     validate(engine.liveTests);
-  });
+  }, testOn: testOn, timeout: timeout, skip: skip, onPlatform: onPlatform);
 }
 
 /// Returns a string description of the test run descibed by [liveTests].
 String _summarizeTests(List<LiveTest> liveTests) {
   var buffer = new StringBuffer();
   for (var liveTest in liveTests) {
     buffer.writeln("${liveTest.state.result}: ${liveTest.test.name}");
     for (var error in liveTest.errors) {
       buffer.writeln(error.error);
       if (error.stackTrace != null) buffer.writeln(error.stackTrace);
     }
   }
   return buffer.toString();
 }