Tests: add a name removal method (#2233)

* Tests: add a name removal method, and have assertAccessDependency use and dispose its own state

* Update test/TestBase.py

---------

Co-authored-by: black-sliver <59490463+black-sliver@users.noreply.github.com>

test/TestBase.py

@@ -141,13 +141,16 @@ class WorldTestBase(unittest.TestCase):
             call_all(self.multiworld, step)
 
     # methods that can be called within tests
-    def collect_all_but(self, item_names: typing.Union[str, typing.Iterable[str]]) -> None:
+    def collect_all_but(self, item_names: typing.Union[str, typing.Iterable[str]],
+                        state: typing.Optional[CollectionState] = None) -> None:
         """Collects all pre-placed items and items in the multiworld itempool except those provided"""
         if isinstance(item_names, str):
             item_names = (item_names,)
+        if not state:
+            state = self.multiworld.state
         for item in self.multiworld.get_items():
             if item.name not in item_names:
-                self.multiworld.state.collect(item)
+                state.collect(item)
 
     def get_item_by_name(self, item_name: str) -> Item:
         """Returns the first item found in placed items, or in the itempool with the matching name"""
@@ -174,6 +177,12 @@ class WorldTestBase(unittest.TestCase):
             items = (items,)
         for item in items:
             self.multiworld.state.collect(item)
+    
+    def remove_by_name(self, item_names: typing.Union[str, typing.Iterable[str]]) -> typing.List[Item]:
+        """Remove all of the items in the item pool with the given names from state"""
+        items = self.get_items_by_name(item_names)
+        self.remove(items)
+        return items
 
     def remove(self, items: typing.Union[Item, typing.Iterable[Item]]) -> None:
         """Removes the provided item(s) from state"""
@@ -198,23 +207,32 @@ class WorldTestBase(unittest.TestCase):
 
     def assertAccessDependency(self,
                                locations: typing.List[str],
-                               possible_items: typing.Iterable[typing.Iterable[str]]) -> None:
+                               possible_items: typing.Iterable[typing.Iterable[str]],
+                               only_check_listed: bool = False) -> None:
         """Asserts that the provided locations can't be reached without the listed items but can be reached with any
          one of the provided combinations"""
         all_items = [item_name for item_names in possible_items for item_name in item_names]
 
-        self.collect_all_but(all_items)
-        for location in self.multiworld.get_locations():
-            loc_reachable = self.multiworld.state.can_reach(location)
-            self.assertEqual(loc_reachable, location.name not in locations,
-                             f"{location.name} is reachable without {all_items}" if loc_reachable
-                             else f"{location.name} is not reachable without {all_items}")
-        for item_names in possible_items:
-            items = self.collect_by_name(item_names)
+        state = CollectionState(self.multiworld)
+        self.collect_all_but(all_items, state)
+        if only_check_listed:
             for location in locations:
-                self.assertTrue(self.can_reach_location(location),
+                self.assertFalse(state.can_reach(location, "Location", 1), f"{location} is reachable without {all_items}")
+        else:
+            for location in self.multiworld.get_locations():
+                loc_reachable = state.can_reach(location, "Location", 1)
+                self.assertEqual(loc_reachable, location.name not in locations,
+                                 f"{location.name} is reachable without {all_items}" if loc_reachable
+                                 else f"{location.name} is not reachable without {all_items}")
+        for item_names in possible_items:
+            items = self.get_items_by_name(item_names)
+            for item in items:
+                state.collect(item)
+            for location in locations:
+                self.assertTrue(state.can_reach(location, "Location", 1),
                                 f"{location} not reachable with {item_names}")
-            self.remove(items)
+            for item in items:
+                state.remove(item)
 
     def assertBeatable(self, beatable: bool):
         """Asserts that the game can be beaten with the current state"""