From a77f8d28f9b50fcc0f98a41a6ec765e2d8e25a08 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=91=A8=E5=AD=90=E5=8D=9A?= <349832309@qq.com>
Date: Sat, 29 Sep 2018 10:10:46 +0800
Subject: [PATCH] Improve coverage

---
 test/emqx_packet_SUITE.erl | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/test/emqx_packet_SUITE.erl b/test/emqx_packet_SUITE.erl
index bd1b0cb4a..ec4205957 100644
--- a/test/emqx_packet_SUITE.erl
+++ b/test/emqx_packet_SUITE.erl
@@ -46,7 +46,12 @@ packet_type_name(_) ->
 packet_validate(_) ->
     ?assertEqual(true, emqx_packet:validate(?SUBSCRIBE_PACKET(15, #{'Subscription-Identifier' => 1}, [{<<"topic">>, #{qos => ?QOS0}}]))),
     ?assertEqual(true, emqx_packet:validate(?UNSUBSCRIBE_PACKET(89, [<<"topic">>]))),
-    ?assertEqual(true, emqx_packet:validate(?CONNECT_PACKET(#mqtt_packet_connect{}))).
+    ?assertEqual(true, emqx_packet:validate(?CONNECT_PACKET(#mqtt_packet_connect{}))),
+    ?assertEqual(true, emqx_packet:validate(?CONNECT_PACKET(#mqtt_packet_connect{properties = #{'Receive-Maximum' => 1}}))),
+    case catch emqx_packet:validate(?CONNECT_PACKET(#mqtt_packet_connect{properties = #{'Receive-Maximum' => 0}})) of
+        {'EXIT', {protocol_error, _}} -> ?assertEqual(true, true);
+        true -> ?assertEqual(true, false)
+    end.
 
 packet_message(_) ->
     Pkt = #mqtt_packet{header = #mqtt_packet_header{type   = ?PUBLISH,