Remove package:unittest from some tests

tests/lib/async/stream_from_iterable_test.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.
 
 // Test merging streams.
 library dart.test.stream_from_iterable;
 
-import "package:expect/expect.dart";
 import "dart:async";
-import 'package:unittest/unittest.dart';
+import 'package:test/test.dart';
 import 'event_helper.dart';
 
 class IterableTest<T> {
   static int counter = 0;
   Iterable<T> iterable;
   IterableTest(this.iterable);
   void run() {
     test("stream from iterable ${counter++}", () {
       Events expected = new Events.fromIterable(iterable);
       Stream<T> stream = new Stream<T>.fromIterable(iterable);
       Events actual = new Events.capture(stream);
       actual.onDone(expectAsync(() {
-        Expect.listEquals(expected.events, actual.events);
+        expect(expected.events, equals(actual.events));
       }));
     });
   }
 }
 
 main() {
   new IterableTest([]).run();
   new IterableTest([1]).run();
   new IterableTest([1, "two", true, null]).run();
   new IterableTest<int>([1, 2, 3, 4]).run();
   new IterableTest<String>(["one", "two", "three", "four"]).run();
   new IterableTest<int>(new Iterable<int>.generate(1000, (i) => i)).run();
   new IterableTest<String>(new Iterable<int>.generate(1000, (i) => i)
                                             .map((i) => "$i")).run();
 
   Iterable<int> iter = new Iterable.generate(25, (i) => i * 2);
 
   test("iterable-toList", () {
     new Stream.fromIterable(iter).toList().then(expectAsync((actual) {
       List expected = iter.toList();
-      Expect.equals(25, expected.length);
-      Expect.listEquals(expected, actual);
+      expect(25, equals(expected.length));
+      expect(expected, equals(actual));
     }));
   });
 
   test("iterable-mapped-toList", () {
     new Stream.fromIterable(iter)
       .map((i) => i * 3)
       .toList()
       .then(expectAsync((actual) {
          List expected = iter.map((i) => i * 3).toList();
-         Expect.listEquals(expected, actual);
+         expect(expected, equals(actual));
       }));
   });
 
   test("iterable-paused", () {
     Stream stream = new Stream.fromIterable(iter);
     Events actual = new Events();
     StreamSubscription subscription;
     subscription = stream.listen((int value) {
       actual.add(value);
       // Do a 10 ms pause during the playback of the iterable.
       Duration duration = const Duration(milliseconds: 10);
       if (value == 20) {
         subscription.pause(new Future.delayed(duration, () {}));
       }
     }, onDone: expectAsync(() {
       actual.close();
       Events expected = new Events.fromIterable(iter);
-      Expect.listEquals(expected.events, actual.events);
+      expect(expected.events, equals(actual.events));
     }));
   });
 
   test("iterable-single-subscription", () {
     Stream stream = new Stream.fromIterable(iter);
     stream.listen((x){});
-    Expect.throws(() { stream.listen((x){}); },
-                  (e) => e is StateError);
+    expect(() { stream.listen((x){}); },
+           throwsA(predicate((e) => e is StateError)));
   });
 
   test("regression-14332", () {
     // Regression test for http://dartbug.com/14332.
     // This should succeede.
     var from = new Stream.fromIterable([1,2,3,4,5]);
 
     var c = new StreamController();
     var sink = c.sink;
 
     var done = expectAsync((){}, count: 2);
 
     // if this goes first, test failed (hanged). Swapping addStream and toList
     // made failure go away.
     sink.addStream(from).then((_) {
       c.close();
       done();
     });
 
     c.stream.toList().then((x) {
-      Expect.listEquals([1,2,3,4,5], x);
+      expect([1,2,3,4,5], equals(x));
       done();
     });
   });
 
   test("regression-14334-a", () {
     var from = new Stream.fromIterable([1,2,3,4,5]);
 
     // odd numbers as data events, even numbers as error events
     from = from.map((x) => x.isOdd ? x : throw x);
 
     var c = new StreamController();
     var sink = c.sink;
 
     var done = expectAsync((){}, count: 2);
 
     var data = [], errors = [];
     c.stream.listen(data.add, onError: errors.add, onDone: () {
-      Expect.listEquals([1], data);
-      Expect.listEquals([2], errors);
+      expect([1], equals(data));
+      expect([2], equals(errors));
       done();
     });
     sink.addStream(from).then((_) {
       c.close();
       done();
     });
   });
 
   test("regression-14334-b", () {
     var from = new Stream.fromIterable([1,2,3,4,5]);
 
     // odd numbers as data events, even numbers as error events
     from = from.map((x) => x.isOdd ? x : throw x);
 
     var c = new StreamController();
 
     var done = expectAsync((){}, count: 2);
 
     var data = [], errors = [];
     c.stream.listen(data.add, onError: errors.add, onDone: () {
-      Expect.listEquals([1, 3, 5], data);
-      Expect.listEquals([2, 4], errors);
+      expect([1, 3, 5], equals(data));
+      expect([2, 4], equals(errors));
       done();
     });
     c.addStream(from, cancelOnError: false).then((_) {
       c.close();
       done();
     });
   });
 }