Support serving from multiple directories using "pub serve".

pkg/scheduled_test/test/scheduled_stream/stream_matcher_test.dart

Index: pkg/scheduled_test/test/scheduled_stream/stream_matcher_test.dart
diff --git a/pkg/scheduled_test/test/scheduled_stream/stream_matcher_test.dart b/pkg/scheduled_test/test/scheduled_stream/stream_matcher_test.dart
index 127cd04776998f88561d9d5c188d0026cd18bd46..93c6b43cf4d02309417e15d5e33690f95e1a03b9 100644
--- a/pkg/scheduled_test/test/scheduled_stream/stream_matcher_test.dart
+++ b/pkg/scheduled_test/test/scheduled_stream/stream_matcher_test.dart
@@ -208,6 +208,20 @@ void main(_, message) {
         "   Which: unexpected end of stream"));
   });
 
+  expectTestPasses("consumeWhile() consumes values while the given matcher "
+      "matches", () {
+    var stream = createStream();
+    stream.expect(consumeWhile(lessThan(4)));
+    stream.expect(4);
+  });
+
+  expectTestPasses("consumeWhile() will stop if the first value doesn't match",
+      () {
+    var stream = createStream();
+    stream.expect(consumeWhile(2));
+    stream.expect(1);
+  });
+
   expectTestPasses("either() will match if the first branch matches", () {
     createStream().expect(either(1, 100));
   });