Speed up pattern matching test.

test/broker/03-pattern-matching.py

@@ -20,11 +20,9 @@ def pattern_test(sub_topic, pub_topic):
     unsuback_packet = mosq_test.gen_unsuback(mid)
 
     port = mosq_test.get_port()
-    broker = subprocess.Popen(['../../src/mosquitto', '-p', str(port)], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port)
 
     try:
-        time.sleep(0.5)
-
         sock = mosq_test.do_client_connect(connect_packet, connack_packet, timeout=20, port=port)
         mosq_test.do_send_receive(sock, subscribe_packet, suback_packet, "suback")
 
@@ -48,7 +46,7 @@ def pattern_test(sub_topic, pub_topic):
         if rc:
             print(stde)
             print(stdo)
-            raise
+            sys.exit(rc)
 
     return rc