diff --git a/apps/emqx_gateway/test/emqx_tlv_SUITE.erl b/apps/emqx_gateway/test/emqx_tlv_SUITE.erl
index a37eeb7d2..1191d748e 100644
--- a/apps/emqx_gateway/test/emqx_tlv_SUITE.erl
+++ b/apps/emqx_gateway/test/emqx_tlv_SUITE.erl
@@ -25,7 +25,13 @@
 -include_lib("emqx_gateway/src/coap/include/emqx_coap.hrl").
 -include_lib("eunit/include/eunit.hrl").
 
-all() -> [case01, case02, case03, case03_0, case04, case05, case06, case07, case08, case09].
+%%--------------------------------------------------------------------
+%% Setup
+%%--------------------------------------------------------------------
+
+all() ->
+    [case01, case02, case03, case03_0,
+     case04, case05, case06, case07, case08, case09].
 
 init_per_suite(Config) ->
     Config.
@@ -33,9 +39,14 @@ init_per_suite(Config) ->
 end_per_suite(Config) ->
     Config.
 
+%%--------------------------------------------------------------------
+%% Cases
+%%--------------------------------------------------------------------
 
 case01(_Config) ->
-    Data = <<16#C8, 16#00, 16#14, 16#4F, 16#70, 16#65, 16#6E, 16#20, 16#4D, 16#6F, 16#62, 16#69, 16#6C, 16#65, 16#20, 16#41, 16#6C, 16#6C, 16#69, 16#61, 16#6E, 16#63, 16#65>>,
+    Data = <<16#C8, 16#00, 16#14, 16#4F, 16#70, 16#65, 16#6E, 16#20,
+             16#4D, 16#6F, 16#62, 16#69, 16#6C, 16#65, 16#20, 16#41,
+             16#6C, 16#6C, 16#69, 16#61, 16#6E, 16#63, 16#65>>,
     R = emqx_lwm2m_tlv:parse(Data),
     Exp = [
         #{tlv_resource_with_value => 16#00, value => <<"Open Mobile Alliance">>}
@@ -47,24 +58,28 @@ case01(_Config) ->
 case02(_Config) ->
     Data = <<16#86, 16#06, 16#41, 16#00, 16#01, 16#41, 16#01, 16#05>>,
     R = emqx_lwm2m_tlv:parse(Data),
-    Exp = [
-        #{tlv_multiple_resource => 16#06, value => [
-                                                                    #{tlv_resource_instance => 16#00, value => <<1>>},
-                                                                    #{tlv_resource_instance => 16#01, value => <<5>>}
-            ]}
-    ],
+    Exp = [ #{tlv_multiple_resource => 16#06,
+              value => [ #{tlv_resource_instance => 16#00, value => <<1>>},
+                         #{tlv_resource_instance => 16#01, value => <<5>>}]}
+          ],
     ?assertEqual(Exp, R),
     EncodedBinary = emqx_lwm2m_tlv:encode(Exp),
     ?assertEqual(EncodedBinary, Data).
 
 case03(_Config) ->
-    Data = <<16#C8, 16#00, 16#14, 16#4F, 16#70, 16#65, 16#6E, 16#20, 16#4D, 16#6F, 16#62, 16#69, 16#6C, 16#65, 16#20, 16#41, 16#6C, 16#6C, 16#69, 16#61, 16#6E, 16#63, 16#65, 16#C8, 16#01, 16#16, 16#4C, 16#69, 16#67, 16#68, 16#74, 16#77, 16#65, 16#69, 16#67, 16#68, 16#74, 16#20, 16#4D, 16#32, 16#4D, 16#20, 16#43, 16#6C, 16#69, 16#65, 16#6E, 16#74, 16#C8, 16#02, 16#09, 16#33, 16#34, 16#35, 16#30, 16#30, 16#30, 16#31, 16#32, 16#33>>,
+    Data = <<16#C8, 16#00, 16#14, 16#4F, 16#70, 16#65, 16#6E, 16#20,
+             16#4D, 16#6F, 16#62, 16#69, 16#6C, 16#65, 16#20, 16#41,
+             16#6C, 16#6C, 16#69, 16#61, 16#6E, 16#63, 16#65, 16#C8,
+             16#01, 16#16, 16#4C, 16#69, 16#67, 16#68, 16#74, 16#77,
+             16#65, 16#69, 16#67, 16#68, 16#74, 16#20, 16#4D, 16#32,
+             16#4D, 16#20, 16#43, 16#6C, 16#69, 16#65, 16#6E, 16#74,
+             16#C8, 16#02, 16#09, 16#33, 16#34, 16#35, 16#30, 16#30,
+             16#30, 16#31, 16#32, 16#33>>,
     R = emqx_lwm2m_tlv:parse(Data),
-    Exp = [
-            #{tlv_resource_with_value => 16#00, value => <<"Open Mobile Alliance">>},
+    Exp = [ #{tlv_resource_with_value => 16#00, value => <<"Open Mobile Alliance">>},
             #{tlv_resource_with_value => 16#01, value => <<"Lightweight M2M Client">>},
             #{tlv_resource_with_value => 16#02, value => <<"345000123">>}
-            ],
+          ],
     ?assertEqual(Exp, R),
     EncodedBinary = emqx_lwm2m_tlv:encode(Exp),
     ?assertEqual(EncodedBinary, Data).
@@ -72,42 +87,46 @@ case03(_Config) ->
 case03_0(_Config) ->
     Data = <<16#87, 16#02, 16#41, 16#7F, 16#07, 16#61, 16#01, 16#36, 16#01>>,
     R = emqx_lwm2m_tlv:parse(Data),
-    Exp = [
-        #{tlv_multiple_resource => 16#02, value => [
-            #{tlv_resource_instance => 16#7F, value => <<16#07>>},
-            #{tlv_resource_instance => 16#0136, value => <<16#01>>}
-        ]}
-    ],
+    Exp = [ #{tlv_multiple_resource => 16#02,
+              value => [ #{tlv_resource_instance => 16#7F, value => <<16#07>>},
+                         #{tlv_resource_instance => 16#0136, value => <<16#01>>}
+                       ]}
+          ],
     ?assertEqual(Exp, R),
     EncodedBinary = emqx_lwm2m_tlv:encode(Exp),
     ?assertEqual(EncodedBinary, Data).
 
 case04(_Config) ->
     % 6.4.3.1 Single Object Instance Request Example
-    Data = <<16#C8, 16#00, 16#14, 16#4F, 16#70, 16#65, 16#6E, 16#20, 16#4D, 16#6F, 16#62, 16#69, 16#6C, 16#65, 16#20, 16#41, 16#6C, 16#6C, 16#69, 16#61, 16#6E, 16#63, 16#65, 16#C8, 16#01, 16#16, 16#4C, 16#69, 16#67, 16#68, 16#74, 16#77, 16#65, 16#69, 16#67, 16#68, 16#74, 16#20, 16#4D, 16#32, 16#4D, 16#20, 16#43, 16#6C, 16#69, 16#65, 16#6E, 16#74, 16#C8, 16#02, 16#09, 16#33, 16#34, 16#35, 16#30, 16#30, 16#30, 16#31, 16#32, 16#33, 16#C3, 16#03, 16#31, 16#2E, 16#30, 16#86, 16#06, 16#41, 16#00, 16#01, 16#41, 16#01, 16#05, 16#88, 16#07, 16#08, 16#42, 16#00, 16#0E, 16#D8, 16#42, 16#01, 16#13, 16#88, 16#87, 16#08, 16#41, 16#00, 16#7D, 16#42, 16#01, 16#03, 16#84, 16#C1, 16#09, 16#64, 16#C1, 16#0A, 16#0F, 16#83, 16#0B, 16#41, 16#00, 16#00, 16#C4, 16#0D, 16#51, 16#82, 16#42, 16#8F, 16#C6, 16#0E, 16#2B, 16#30, 16#32, 16#3A, 16#30, 16#30, 16#C1, 16#10, 16#55>>,
+    Data = <<16#C8, 16#00, 16#14, 16#4F, 16#70, 16#65, 16#6E, 16#20,
+             16#4D, 16#6F, 16#62, 16#69, 16#6C, 16#65, 16#20, 16#41,
+             16#6C, 16#6C, 16#69, 16#61, 16#6E, 16#63, 16#65, 16#C8,
+             16#01, 16#16, 16#4C, 16#69, 16#67, 16#68, 16#74, 16#77,
+             16#65, 16#69, 16#67, 16#68, 16#74, 16#20, 16#4D, 16#32,
+             16#4D, 16#20, 16#43, 16#6C, 16#69, 16#65, 16#6E, 16#74,
+             16#C8, 16#02, 16#09, 16#33, 16#34, 16#35, 16#30, 16#30,
+             16#30, 16#31, 16#32, 16#33, 16#C3, 16#03, 16#31, 16#2E,
+             16#30, 16#86, 16#06, 16#41, 16#00, 16#01, 16#41, 16#01,
+             16#05, 16#88, 16#07, 16#08, 16#42, 16#00, 16#0E, 16#D8,
+             16#42, 16#01, 16#13, 16#88, 16#87, 16#08, 16#41, 16#00,
+             16#7D, 16#42, 16#01, 16#03, 16#84, 16#C1, 16#09, 16#64,
+             16#C1, 16#0A, 16#0F, 16#83, 16#0B, 16#41, 16#00, 16#00,
+             16#C4, 16#0D, 16#51, 16#82, 16#42, 16#8F, 16#C6, 16#0E,
+             16#2B, 16#30, 16#32, 16#3A, 16#30, 16#30, 16#C1, 16#10, 16#55>>,
     R = emqx_lwm2m_tlv:parse(Data),
-    Exp = [
-            #{tlv_resource_with_value => 16#00, value => <<"Open Mobile Alliance">>},
+    Exp = [ #{tlv_resource_with_value => 16#00, value => <<"Open Mobile Alliance">>},
             #{tlv_resource_with_value => 16#01, value => <<"Lightweight M2M Client">>},
             #{tlv_resource_with_value => 16#02, value => <<"345000123">>},
             #{tlv_resource_with_value => 16#03, value => <<"1.0">>},
-            #{tlv_multiple_resource => 16#06, value => [
-                                                                        #{tlv_resource_instance => 16#00, value => <<1>>},
-                                                                        #{tlv_resource_instance => 16#01, value => <<5>>}
-                ]},
-            #{tlv_multiple_resource => 16#07, value => [
-                                                                        #{tlv_resource_instance => 16#00, value => <<16#0ED8:16>>},
-                                                                        #{tlv_resource_instance => 16#01, value => <<16#1388:16>>}
-                ]},
-            #{tlv_multiple_resource => 16#08, value => [
-                                                                        #{tlv_resource_instance => 16#00, value => <<16#7d>>},
-                                                                        #{tlv_resource_instance => 16#01, value => <<16#0384:16>>}
-            ]},
+            #{tlv_multiple_resource => 16#06, value => [#{tlv_resource_instance => 16#00, value => <<1>>},
+                                                        #{tlv_resource_instance => 16#01, value => <<5>>}]},
+            #{tlv_multiple_resource => 16#07, value => [#{tlv_resource_instance => 16#00, value => <<16#0ED8:16>>},
+                                                        #{tlv_resource_instance => 16#01, value => <<16#1388:16>>}]},
+            #{tlv_multiple_resource => 16#08, value => [#{tlv_resource_instance => 16#00, value => <<16#7d>>},
+                                                        #{tlv_resource_instance => 16#01, value => <<16#0384:16>>}]},
             #{tlv_resource_with_value => 16#09, value => <<16#64>>},
             #{tlv_resource_with_value => 16#0A, value => <<16#0F>>},
-            #{tlv_multiple_resource => 16#0B, value => [
-                #{tlv_resource_instance => 16#00, value => <<16#00>>}
-            ]},
+            #{tlv_multiple_resource => 16#0B, value => [#{tlv_resource_instance => 16#00, value => <<16#00>>}]},
             #{tlv_resource_with_value => 16#0D, value => <<16#5182428F:32>>},
             #{tlv_resource_with_value => 16#0E, value => <<"+02:00">>},
             #{tlv_resource_with_value => 16#10, value => <<"U">>}
@@ -119,7 +138,22 @@ case04(_Config) ->
 case05(_Config) ->
     % 6.4.3.2 Multiple Object Instance Request Examples
     %   A) Request on Single-Instance Object
-    Data = <<16#08, 16#00, 16#79, 16#C8, 16#00, 16#14, 16#4F, 16#70, 16#65, 16#6E, 16#20, 16#4D, 16#6F, 16#62, 16#69, 16#6C, 16#65, 16#20, 16#41, 16#6C, 16#6C, 16#69, 16#61, 16#6E, 16#63, 16#65, 16#C8, 16#01, 16#16, 16#4C, 16#69, 16#67, 16#68, 16#74, 16#77, 16#65, 16#69, 16#67, 16#68, 16#74, 16#20, 16#4D, 16#32, 16#4D, 16#20, 16#43, 16#6C, 16#69, 16#65, 16#6E, 16#74, 16#C8, 16#02, 16#09, 16#33, 16#34, 16#35, 16#30, 16#30, 16#30, 16#31, 16#32, 16#33, 16#C3, 16#03, 16#31, 16#2E, 16#30, 16#86, 16#06, 16#41, 16#00, 16#01, 16#41, 16#01, 16#05, 16#88, 16#07, 16#08, 16#42, 16#00, 16#0E, 16#D8, 16#42, 16#01, 16#13, 16#88, 16#87, 16#08, 16#41, 16#00, 16#7D, 16#42, 16#01, 16#03, 16#84, 16#C1, 16#09, 16#64, 16#C1, 16#0A, 16#0F, 16#83, 16#0B, 16#41, 16#00, 16#00, 16#C4, 16#0D, 16#51, 16#82, 16#42, 16#8F, 16#C6, 16#0E, 16#2B, 16#30, 16#32, 16#3A, 16#30, 16#30, 16#C1, 16#10, 16#55>>,
+    Data = <<16#08, 16#00, 16#79, 16#C8, 16#00, 16#14, 16#4F, 16#70,
+             16#65, 16#6E, 16#20, 16#4D, 16#6F, 16#62, 16#69, 16#6C,
+             16#65, 16#20, 16#41, 16#6C, 16#6C, 16#69, 16#61, 16#6E,
+             16#63, 16#65, 16#C8, 16#01, 16#16, 16#4C, 16#69, 16#67,
+             16#68, 16#74, 16#77, 16#65, 16#69, 16#67, 16#68, 16#74,
+             16#20, 16#4D, 16#32, 16#4D, 16#20, 16#43, 16#6C, 16#69,
+             16#65, 16#6E, 16#74, 16#C8, 16#02, 16#09, 16#33, 16#34,
+             16#35, 16#30, 16#30, 16#30, 16#31, 16#32, 16#33, 16#C3,
+             16#03, 16#31, 16#2E, 16#30, 16#86, 16#06, 16#41, 16#00,
+             16#01, 16#41, 16#01, 16#05, 16#88, 16#07, 16#08, 16#42,
+             16#00, 16#0E, 16#D8, 16#42, 16#01, 16#13, 16#88, 16#87,
+             16#08, 16#41, 16#00, 16#7D, 16#42, 16#01, 16#03, 16#84,
+             16#C1, 16#09, 16#64, 16#C1, 16#0A, 16#0F, 16#83, 16#0B,
+             16#41, 16#00, 16#00, 16#C4, 16#0D, 16#51, 16#82, 16#42,
+             16#8F, 16#C6, 16#0E, 16#2B, 16#30, 16#32, 16#3A, 16#30,
+             16#30, 16#C1, 16#10, 16#55>>,
     R = emqx_lwm2m_tlv:parse(Data),
     Exp = [
         #{tlv_object_instance => 16#00, value => [
@@ -127,23 +161,16 @@ case05(_Config) ->
             #{tlv_resource_with_value => 16#01, value => <<"Lightweight M2M Client">>},
             #{tlv_resource_with_value => 16#02, value => <<"345000123">>},
             #{tlv_resource_with_value => 16#03, value => <<"1.0">>},
-            #{tlv_multiple_resource => 16#06, value => [
-                #{tlv_resource_instance => 16#00, value => <<1>>},
-                #{tlv_resource_instance => 16#01, value => <<5>>}
-            ]},
-            #{tlv_multiple_resource => 16#07, value => [
-                #{tlv_resource_instance => 16#00, value => <<16#0ED8:16>>},
-                #{tlv_resource_instance => 16#01, value => <<16#1388:16>>}
-            ]},
-            #{tlv_multiple_resource => 16#08, value => [
-                #{tlv_resource_instance => 16#00, value => <<16#7d>>},
-                #{tlv_resource_instance => 16#01, value => <<16#0384:16>>}
+            #{tlv_multiple_resource => 16#06, value => [#{tlv_resource_instance => 16#00, value => <<1>>},
+                                                        #{tlv_resource_instance => 16#01, value => <<5>>}]},
+            #{tlv_multiple_resource => 16#07, value => [#{tlv_resource_instance => 16#00, value => <<16#0ED8:16>>},
+                                                        #{tlv_resource_instance => 16#01, value => <<16#1388:16>>}
             ]},
+            #{tlv_multiple_resource => 16#08, value => [#{tlv_resource_instance => 16#00, value => <<16#7d>>},
+                                                        #{tlv_resource_instance => 16#01, value => <<16#0384:16>>}]},
             #{tlv_resource_with_value => 16#09, value => <<16#64>>},
             #{tlv_resource_with_value => 16#0A, value => <<16#0F>>},
-            #{tlv_multiple_resource => 16#0B, value => [
-                #{tlv_resource_instance => 16#00, value => <<16#00>>}
-            ]},
+            #{tlv_multiple_resource => 16#0B, value => [#{tlv_resource_instance => 16#00, value => <<16#00>>}]},
             #{tlv_resource_with_value => 16#0D, value => <<16#5182428F:32>>},
             #{tlv_resource_with_value => 16#0E, value => <<"+02:00">>},
             #{tlv_resource_with_value => 16#10, value => <<"U">>}
@@ -156,27 +183,25 @@ case05(_Config) ->
 case06(_Config) ->
     % 6.4.3.2 Multiple Object Instance Request Examples
     %   B) Request on Multiple-Instances Object having 2 instances
-    Data = <<16#08, 16#00, 16#0E, 16#C1, 16#00, 16#01, 16#C1, 16#01, 16#00, 16#83, 16#02, 16#41, 16#7F, 16#07, 16#C1, 16#03, 16#7F, 16#08, 16#02, 16#12, 16#C1, 16#00, 16#03, 16#C1, 16#01, 16#00, 16#87, 16#02, 16#41, 16#7F, 16#07, 16#61, 16#01, 16#36, 16#01, 16#C1, 16#03, 16#7F>>,
+    Data = <<16#08, 16#00, 16#0E, 16#C1, 16#00, 16#01, 16#C1, 16#01,
+             16#00, 16#83, 16#02, 16#41, 16#7F, 16#07, 16#C1, 16#03,
+             16#7F, 16#08, 16#02, 16#12, 16#C1, 16#00, 16#03, 16#C1,
+             16#01, 16#00, 16#87, 16#02, 16#41, 16#7F, 16#07, 16#61,
+             16#01, 16#36, 16#01, 16#C1, 16#03, 16#7F>>,
     R = emqx_lwm2m_tlv:parse(Data),
-    Exp = [
-        #{tlv_object_instance => 16#00, value => [
-            #{tlv_resource_with_value => 16#00, value => <<16#01>>},
-            #{tlv_resource_with_value => 16#01, value => <<16#00>>},
-            #{tlv_multiple_resource => 16#02, value => [
-                #{tlv_resource_instance => 16#7F, value => <<16#07>>}
-            ]},
-            #{tlv_resource_with_value => 16#03, value => <<16#7F>>}
-        ]},
-        #{tlv_object_instance => 16#02, value => [
-            #{tlv_resource_with_value => 16#00, value => <<16#03>>},
-            #{tlv_resource_with_value => 16#01, value => <<16#00>>},
-            #{tlv_multiple_resource => 16#02, value => [
-                #{tlv_resource_instance => 16#7F, value => <<16#07>>},
-                #{tlv_resource_instance => 16#0136, value => <<16#01>>}
-            ]},
-            #{tlv_resource_with_value => 16#03, value => <<16#7F>>}
-        ]}
-    ],
+    Exp = [#{tlv_object_instance => 16#00, value => [#{tlv_resource_with_value => 16#00, value => <<16#01>>},
+                                                     #{tlv_resource_with_value => 16#01, value => <<16#00>>},
+                                                     #{tlv_multiple_resource => 16#02,
+                                                       value => [#{tlv_resource_instance => 16#7F, value => <<16#07>>}]},
+                                                     #{tlv_resource_with_value => 16#03, value => <<16#7F>>}
+                                                    ]},
+           #{tlv_object_instance => 16#02, value => [#{tlv_resource_with_value => 16#00, value => <<16#03>>},
+                                                     #{tlv_resource_with_value => 16#01, value => <<16#00>>},
+                                                     #{tlv_multiple_resource => 16#02,
+                                                       value => [#{tlv_resource_instance => 16#7F, value => <<16#07>>},
+                                                                 #{tlv_resource_instance => 16#0136, value => <<16#01>>}]},
+                                                     #{tlv_resource_with_value => 16#03, value => <<16#7F>>}]}
+          ],
     ?assertEqual(Exp, R),
     EncodedBinary = emqx_lwm2m_tlv:encode(Exp),
     ?assertEqual(EncodedBinary, Data).
@@ -184,15 +209,16 @@ case06(_Config) ->
 case07(_Config) ->
     % 6.4.3.2 Multiple Object Instance Request Examples
     %   C) Request on Multiple-Instances Object having 1 instance only
-    Data = <<16#08, 16#00, 16#0F, 16#C1, 16#00, 16#01, 16#C4, 16#01, 16#00, 16#01, 16#51, 16#80, 16#C1, 16#06, 16#01, 16#C1, 16#07, 16#55>>,
+    Data = <<16#08, 16#00, 16#0F, 16#C1, 16#00, 16#01, 16#C4, 16#01,
+             16#00, 16#01, 16#51, 16#80, 16#C1, 16#06, 16#01, 16#C1,
+             16#07, 16#55>>,
     R = emqx_lwm2m_tlv:parse(Data),
-    Exp = [
-        #{tlv_object_instance => 16#00, value => [
-            #{tlv_resource_with_value => 16#00, value => <<16#01>>},
-            #{tlv_resource_with_value => 16#01, value => <<86400:32>>},
-            #{tlv_resource_with_value => 16#06, value => <<16#01>>},
-            #{tlv_resource_with_value => 16#07, value => <<$U>>}]}
-    ],
+    Exp = [#{tlv_object_instance => 16#00,
+             value => [#{tlv_resource_with_value => 16#00, value => <<16#01>>},
+                       #{tlv_resource_with_value => 16#01, value => <<86400:32>>},
+                       #{tlv_resource_with_value => 16#06, value => <<16#01>>},
+                       #{tlv_resource_with_value => 16#07, value => <<$U>>}]}
+          ],
     ?assertEqual(Exp, R),
     EncodedBinary = emqx_lwm2m_tlv:encode(Exp),
     ?assertEqual(EncodedBinary, Data).
@@ -200,16 +226,17 @@ case07(_Config) ->
 case08(_Config) ->
     % 6.4.3.3 Example of Request on an Object Instance containing an Object Link Resource
     %   Example 1) request to Object 65 Instance 0: Read /65/0
-    Data = <<16#88, 16#00, 16#0C, 16#44, 16#00, 16#00, 16#42, 16#00, 16#00, 16#44, 16#01, 16#00, 16#42, 16#00, 16#01, 16#C8, 16#01, 16#0D, 16#38, 16#36, 16#31, 16#33, 16#38, 16#30, 16#30, 16#37, 16#35, 16#35, 16#35, 16#30, 16#30, 16#C4, 16#02, 16#12, 16#34, 16#56, 16#78>>,
+    Data = <<16#88, 16#00, 16#0C, 16#44, 16#00, 16#00, 16#42, 16#00,
+             16#00, 16#44, 16#01, 16#00, 16#42, 16#00, 16#01, 16#C8,
+             16#01, 16#0D, 16#38, 16#36, 16#31, 16#33, 16#38, 16#30,
+             16#30, 16#37, 16#35, 16#35, 16#35, 16#30, 16#30, 16#C4,
+             16#02, 16#12, 16#34, 16#56, 16#78>>,
     R = emqx_lwm2m_tlv:parse(Data),
-    Exp = [
-        #{tlv_multiple_resource => 16#00, value => [
-            #{tlv_resource_instance => 16#00, value => <<16#00, 16#42, 16#00, 16#00>>},
-            #{tlv_resource_instance => 16#01, value => <<16#00, 16#42, 16#00, 16#01>>}
-            ]},
-        #{tlv_resource_with_value => 16#01, value => <<"8613800755500">>},
-        #{tlv_resource_with_value => 16#02, value => <<16#12345678:32>>}
-    ],
+    Exp = [#{tlv_multiple_resource => 16#00, value => [#{tlv_resource_instance => 16#00, value => <<16#00, 16#42, 16#00, 16#00>>},
+                                                       #{tlv_resource_instance => 16#01, value => <<16#00, 16#42, 16#00, 16#01>>}]},
+           #{tlv_resource_with_value => 16#01, value => <<"8613800755500">>},
+           #{tlv_resource_with_value => 16#02, value => <<16#12345678:32>>}
+          ],
     ?assertEqual(Exp, R),
     EncodedBinary = emqx_lwm2m_tlv:encode(Exp),
     ?assertEqual(EncodedBinary, Data).
@@ -217,21 +244,26 @@ case08(_Config) ->
 case09(_Config) ->
     % 6.4.3.3 Example of Request on an Object Instance containing an Object Link Resource
     %   Example 2) request to Object 66: Read /66: TLV payload will contain 2 Object Instances
-    Data = <<16#08, 16#00, 16#26, 16#C8, 16#00, 16#0B, 16#6D, 16#79, 16#53, 16#65, 16#72, 16#76, 16#69, 16#63, 16#65, 16#20, 16#31, 16#C8, 16#01, 16#0F, 16#49, 16#6E, 16#74, 16#65, 16#72, 16#6E, 16#65, 16#74, 16#2E, 16#31, 16#35, 16#2E, 16#32, 16#33, 16#34, 16#C4, 16#02, 16#00, 16#43, 16#00, 16#00, 16#08, 16#01, 16#26, 16#C8, 16#00, 16#0B, 16#6D, 16#79, 16#53, 16#65, 16#72, 16#76, 16#69, 16#63, 16#65, 16#20, 16#32, 16#C8, 16#01, 16#0F, 16#49, 16#6E, 16#74, 16#65, 16#72, 16#6E, 16#65, 16#74, 16#2E, 16#31, 16#35, 16#2E, 16#32, 16#33, 16#35, 16#C4, 16#02, 16#FF, 16#FF, 16#FF, 16#FF>>,
+    Data = <<16#08, 16#00, 16#26, 16#C8, 16#00, 16#0B, 16#6D, 16#79,
+             16#53, 16#65, 16#72, 16#76, 16#69, 16#63, 16#65, 16#20,
+             16#31, 16#C8, 16#01, 16#0F, 16#49, 16#6E, 16#74, 16#65,
+             16#72, 16#6E, 16#65, 16#74, 16#2E, 16#31, 16#35, 16#2E,
+             16#32, 16#33, 16#34, 16#C4, 16#02, 16#00, 16#43, 16#00,
+             16#00, 16#08, 16#01, 16#26, 16#C8, 16#00, 16#0B, 16#6D,
+             16#79, 16#53, 16#65, 16#72, 16#76, 16#69, 16#63, 16#65,
+             16#20, 16#32, 16#C8, 16#01, 16#0F, 16#49, 16#6E, 16#74,
+             16#65, 16#72, 16#6E, 16#65, 16#74, 16#2E, 16#31, 16#35,
+             16#2E, 16#32, 16#33, 16#35, 16#C4, 16#02, 16#FF, 16#FF,
+             16#FF, 16#FF>>,
     R = emqx_lwm2m_tlv:parse(Data),
-    Exp = [
-        #{tlv_object_instance => 16#00, value => [
-            #{tlv_resource_with_value => 16#00, value => <<"myService 1">>},
-            #{tlv_resource_with_value => 16#01, value => <<"Internet.15.234">>},
-            #{tlv_resource_with_value => 16#02, value => <<16#00, 16#43, 16#00, 16#00>>}
-        ]},
-        #{tlv_object_instance => 16#01, value => [
-            #{tlv_resource_with_value => 16#00, value => <<"myService 2">>},
-            #{tlv_resource_with_value => 16#01, value => <<"Internet.15.235">>},
-            #{tlv_resource_with_value => 16#02, value => <<16#FF, 16#FF, 16#FF, 16#FF>>}
-        ]}
-    ],
+    Exp = [#{tlv_object_instance => 16#00, value => [#{tlv_resource_with_value => 16#00, value => <<"myService 1">>},
+                                                     #{tlv_resource_with_value => 16#01, value => <<"Internet.15.234">>},
+                                                     #{tlv_resource_with_value => 16#02, value => <<16#00, 16#43, 16#00, 16#00>>}]},
+           #{tlv_object_instance => 16#01, value => [#{tlv_resource_with_value => 16#00, value => <<"myService 2">>},
+                                                     #{tlv_resource_with_value => 16#01, value => <<"Internet.15.235">>},
+                                                     #{tlv_resource_with_value => 16#02, value => <<16#FF, 16#FF, 16#FF, 16#FF>>}
+                                                    ]}
+          ],
     ?assertEqual(Exp, R),
     EncodedBinary = emqx_lwm2m_tlv:encode(Exp),
     ?assertEqual(EncodedBinary, Data).
-