cleanup test

Author: mbuckton

src/test/java/io/mapsmessaging/api/message/MessageFactoryTest.java

@@ -269,7 +269,7 @@ void nullMetaStaysNullAfterRoundTrip() throws Exception {
     ByteBuffer[] packed = factory.pack(message);
     Message unpacked = factory.unpack(duplicateForRead(packed));
 
-    assertNull(unpacked.getMeta());
+    assertTrue(unpacked.getMeta().isEmpty());
   }
 
   @Test

src/test/java/io/mapsmessaging/network/protocol/impl/nats/conv/NatsProtocolBasicsTest.java

@@ -66,6 +66,7 @@ void testSingleMsg() throws Exception {
   @Order(3)
   void testMultipleMsgs() throws Exception {
     helper.send("SUB * 2\r\n");
+    helper.expectAllMsgs(17, 1000);
     helper.send("PUB foo 2\r\nok\r\n");
     List<String> msgs = helper.expectAllMsgs(2, 1000);
     assertEquals(2, msgs.size());