Core: Add support for non dictionary iterables for `Region.add_exits` (#1698)

* Core: Add support for non dictionary iterables for `Region.add_exits`

* some cleanup and duplicate code removal

* add unit test for non dict iterable

* use more consistent naming

* sometimes i just make stuff harder on myself :)

BaseClasses.py

@@ -836,20 +836,23 @@ class Region:
         for location, address in locations.items():
             self.locations.append(location_type(self.player, location, address, self))
 
-    def add_exits(self, exits: Dict[str, Optional[str]], rules: Dict[str, Callable[[CollectionState], bool]] = None) -> None:
+    def add_exits(self, exits: Union[Iterable[str], Dict[str, Optional[str]]],
+                  rules: Dict[str, Callable[[CollectionState], bool]] = None) -> None:
         """
         Connects current region to regions in exit dictionary. Passed region names must exist first.
 
-        :param exits: exits from the region. format is {"connecting_region", "exit_name"}
+        :param exits: exits from the region. format is {"connecting_region": "exit_name"}. if a non dict is provided,
+        created entrances will be named "self.name -> connecting_region"
         :param rules: rules for the exits from this region. format is {"connecting_region", rule}
         """
-        for exiting_region, name in exits.items():
-            ret = Entrance(self.player, name, self) if name \
-                else Entrance(self.player, f"{self.name} -> {exiting_region}", self)
-            if rules and exiting_region in rules:
-                ret.access_rule = rules[exiting_region]
-            self.exits.append(ret)
-            ret.connect(self.multiworld.get_region(exiting_region, self.player))
+        if not isinstance(exits, Dict):
+            exits = dict.fromkeys(exits)
+        for connecting_region, name in exits.items():
+            entrance = Entrance(self.player, name if name else f"{self.name} -> {connecting_region}", self)
+            if rules and connecting_region in rules:
+                entrance.access_rule = rules[connecting_region]
+            self.exits.append(entrance)
+            entrance.connect(self.multiworld.get_region(connecting_region, self.player))
 
     def __repr__(self):
         return self.__str__()

test/general/TestHelpers.py

@@ -19,6 +19,7 @@ class TestHelpers(unittest.TestCase):
         regions: Dict[str, str] = {
             "TestRegion1": "I'm an apple",
             "TestRegion2": "I'm a banana",
+            "TestRegion3": "Empty Region",
         }
 
         locations: Dict[str, Dict[str, Optional[int]]] = {
@@ -38,6 +39,10 @@ class TestHelpers(unittest.TestCase):
             "TestRegion2": {"TestRegion1": None},
         }
         
+        reg_exit_set: Dict[str, set[str]] = {
+            "TestRegion1": {"TestRegion3"}
+        }
+        
         exit_rules: Dict[str, Callable[[CollectionState], bool]] = {
             "TestRegion1": lambda state: state.has("test_item", self.player)
         }
@@ -68,3 +73,10 @@ class TestHelpers(unittest.TestCase):
                         entrance_name = exit_name if exit_name else f"{parent} -> {exit_reg}"
                         self.assertEqual(exit_rules[exit_reg],
                                          self.multiworld.get_entrance(entrance_name, self.player).access_rule)
+            
+            for region in reg_exit_set:
+                current_region = self.multiworld.get_region(region, self.player)
+                current_region.add_exits(reg_exit_set[region])
+                exit_names = {_exit.name for _exit in current_region.exits}
+                for reg_exit in reg_exit_set[region]:
+                    self.assertTrue(f"{region} -> {reg_exit}" in exit_names, f"{region} -> {reg_exit} not in {exit_names}")