Change ScheduledProcess's output streams over to be ScheduledStreams.

pkg/scheduled_test/test/scheduled_stream/stream_matcher_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.
 
 library scheduled_test.stream_matcher_test;
 
 import 'dart:async';
 
 import 'package:scheduled_test/scheduled_stream.dart';
 import 'package:scheduled_test/scheduled_test.dart';
@@ skipping 246 matching lines @@
     stream.expect(allow(inOrder([1, 2, 3])));
     stream.expect(4);
   });
 
   expectTestPasses("allow() consumes nothing if the matcher doesn't match", () {
     var stream = createStream();
     stream.expect(allow(inOrder([1, 2, 100])));
     stream.expect(1);
   });
 
+  expectTestPasses("never() consumes everything if the matcher never matches",
+      () {
+    var stream = createStream();
+    stream.expect(never(inOrder([2, 1])));
+  });
+
+  expectTestFails("never() fails if the matcher matches", () {
+    var stream = createStream();
+    stream.expect(never(inOrder([2, 3])));
+  }, (errors) {
+    expect(errors, hasLength(1));
+    expect(errors.first.error.message, equals(
+        "Expected: never\n"
+        "        |   * <2>\n"
+        "        |   * <3>\n"
+        " Emitted: * 1\n"
+        "          * 2\n"
+        "          * 3\n"
+        "   Which: matched\n"
+        "        |   * <2>\n"
+        "        |   * <3>"));
+  });
+
   expectTestPasses("isDone succeeds at the end of the stream", () {
     var stream = createStream();
     stream.expect(consumeThrough(5));
     stream.expect(isDone);
   });
 
   expectTestFails("isDone fails before the end of the stream", () {
     var stream = createStream();
     stream.expect(consumeThrough(4));
     stream.expect(isDone);
   }, (errors) {
     expect(errors, hasLength(1));
     expect(errors.first.error.message, equals(
         "Expected: is done\n"
         " Emitted: * 1\n"
         "          * 2\n"
         "          * 3\n"
         "          * 4\n"
         "          * 5\n"
         "   Which: stream wasn't finished"));
   });
 }