adding host_types file parsing test case

test/config_parser_SUITE.erl

@@ -39,7 +39,8 @@ groups() ->
                          miscellaneous,
                          s2s,
                          modules,
-                         outgoing_pools]},
+                         outgoing_pools,
+                         host_types_file]},
      {general, [parallel], [loglevel,
                             hosts,
                             host_types,
@@ -252,6 +253,12 @@ modules(Config) ->
 outgoing_pools(Config) ->
     test_config_file(Config,  "outgoing_pools").
 
+host_types_file(Config) ->
+    Modules = [dummy_module, another_dummy_module],
+    [meck:new(M, [non_strict]) || M <- Modules],
+    test_config_file(Config, "host_types"),
+    [meck:unload(M) || M <- Modules].
+
 %% tests: general
 loglevel(_Config) ->
     ?eq([#local_config{key = loglevel, value = debug}],

test/config_parser_SUITE_data/host_types.options

@@ -0,0 +1,7 @@
+{config,host_types,
+        [<<"this is host type">>,<<"some host type">>,<<"another host type">>,
+         <<"yet another host type">>]}.
+{local_config,{modules,<<"another host type">>},[{another_dummy_module,[]}]}.
+{local_config,{modules,<<"some host type">>},[]}.
+{local_config,{modules,<<"this is host type">>},[]}.
+{local_config,{modules,<<"yet another host type">>},[{dummy_module,[]}]}.

test/config_parser_SUITE_data/host_types.toml

@@ -0,0 +1,25 @@
+[general]
+host_types = [
+    "this is host type",
+    "some host type",
+    "another host type",
+    "yet another host type"
+]
+
+[modules.dummy_module]
+
+[[host_config]]
+host_type = "this is host type"
+## this resets the modules for this host
+modules ={}
+
+[[host_config]]
+## host is just synonym for host_type now
+host = "some host type"
+## another syntax for reseting the modules for this host type
+[host_config.modules]
+
+[[host_config]]
+host_type = "another host type"
+## reseting the modules for this host type
+[host_config.modules.another_dummy_module]