Merge pull request #4307 from Neerti/11/19/2017_submap_validation

Allows Travis to Validate PoI Maps

code/_map_tests.dm

@@ -0,0 +1,10 @@
+/*
+ *
+ *   This file is used by Travis to indicate that additional maps need to be compiled to look for errors such as missing paths.
+ *   Do not add anything but the MAP_TEST definition here as it will be overwritten by Travis when running tests.
+ *
+ *
+ *   Should you wish to edit set MAP_TEST to 1 like so:
+ *   #define MAP_TEST 1
+ */
+#define MAP_TEST 0

code/unit_tests/map_tests.dm

@@ -13,8 +13,8 @@
 					/area/supply/station,
 					/area/mine,
 					/area/vacant/vacant_shop,
-					/area/turbolift
-					)
+					/area/turbolift,
+					/area/submap					)
 
 	var/list/exempt_from_atmos = typesof(/area/maintenance,
 						/area/storage,