modular map loader

yep

code/modules/unit_tests/_unit_tests.dm

@@ -97,6 +97,7 @@
 #include "medical_wounds.dm"
 #include "merge_type.dm"
 // #include "metabolizing.dm"
+#include "modular_map_loader.dm" //SPLURT EDIT
 // #include "ntnetwork_tests.dm"
 // #include "outfit_sanity.dm"
 // #include "pills.dm"

code/modules/unit_tests/modular_map_loader.dm

@@ -0,0 +1,10 @@
+/datum/unit_test/modular_map_loader
+
+/datum/unit_test/modular_map_loader/Run()
+	for (var/obj/modular_map_root/map_root_type as anything in subtypesof(/obj/modular_map_root))
+		var/config_file = initial(map_root_type.config_file)
+		if (!fexists(config_file))
+			Fail("[map_root_type] points to a config file which does not exist!")
+			continue
+		if (rustg_read_toml_file(config_file) == null)
+			Fail("[map_root_type] points to a config file which is invalid!")