test: add coverage for key_dispatch partition strategy

lib-ee/emqx_ee_bridge/test/emqx_bridge_impl_kafka_producer_SUITE.erl

@@ -109,6 +109,9 @@ set_special_configs(_) ->
 t_publish_no_auth(_CtConfig) ->
     publish_with_and_without_ssl("none").
 
+t_publish_no_auth_key_dispatch(_CtConfig) ->
+    publish_with_and_without_ssl("none", #{"partition_strategy" => "key_dispatch"}).
+
 t_publish_sasl_plain(_CtConfig) ->
     publish_with_and_without_ssl(valid_sasl_plain_settings()).
 
@@ -404,20 +407,35 @@ t_failed_creation_then_fix(_Config) ->
 %%------------------------------------------------------------------------------
 
 publish_with_and_without_ssl(AuthSettings) ->
-    publish_helper(#{
+    publish_with_and_without_ssl(AuthSettings, #{}).
+
+publish_with_and_without_ssl(AuthSettings, Config) ->
+    publish_helper(
+        #{
             auth_settings => AuthSettings,
             ssl_settings => #{}
-    }),
-    publish_helper(#{
+        },
+        Config
+    ),
+    publish_helper(
+        #{
             auth_settings => AuthSettings,
             ssl_settings => valid_ssl_settings()
-    }),
+        },
+        Config
+    ),
     ok.
 
-publish_helper(#{
+publish_helper(AuthSettings) ->
+    publish_helper(AuthSettings, #{}).
+
+publish_helper(
+    #{
         auth_settings := AuthSettings,
         ssl_settings := SSLSettings
-}) ->
+    },
+    Conf0
+) ->
     HostsString =
         case {AuthSettings, SSLSettings} of
             {"none", Map} when map_size(Map) =:= 0 ->
@@ -434,13 +452,17 @@ publish_helper(#{
     InstId = emqx_bridge_resource:resource_id("kafka", Name),
     BridgeId = emqx_bridge_resource:bridge_id("kafka", Name),
     KafkaTopic = "test-topic-one-partition",
-    Conf = config(#{
+    Conf = config(
+        #{
             "authentication" => AuthSettings,
             "kafka_hosts_string" => HostsString,
             "kafka_topic" => KafkaTopic,
             "instance_id" => InstId,
             "ssl" => SSLSettings
-    }),
+        },
+        Conf0
+    ),
+
     emqx_bridge_resource:create(kafka, erlang:list_to_atom(Name), Conf, #{}),
     %% To make sure we get unique value
     timer:sleep(1),
@@ -463,7 +485,15 @@ publish_helper(#{
     ok = emqx_bridge_resource:remove(BridgeId),
     ok.
 
+default_config() ->
+    #{"partition_strategy" => "random"}.
+
 config(Args) ->
+    config(Args, #{}).
+
+config(Args0, More) ->
+    Args1 = maps:merge(default_config(), Args0),
+    Args = maps:merge(Args1, More),
     ConfText = hocon_config(Args),
     ct:pal("Running tests with conf:\n~s", [ConfText]),
     {ok, Conf} = hocon:binary(ConfText),
@@ -506,6 +536,7 @@ producer = {
     kafka = {
         topic = \"{{ kafka_topic }}\"
         message = {key = \"${clientid}\", value = \"${.payload}\"}
+        partition_strategy = {{ partition_strategy }}
     }
 }
 """.