call streamListener.messagesAvailable(messageProducer)

Author: panchenko

core/src/test/java/io/grpc/internal/ServerCallImplTest.java

@@ -530,6 +530,9 @@ public Long parse(InputStream stream) {
 
     streamListener.halfClosed();
     verify(callListener, never()).onHalfClose();
+
+    when(messageProducer.next()).thenReturn(message, (InputStream) null);
+    streamListener.messagesAvailable(messageProducer);
     verify(callListener, never()).onMessage(any());
   }