added extra test and fixed dexnum issue

tests/test_battles.py

@@ -35,7 +35,7 @@ async def test_battle_eevee_pikachu_pokes():
 async def test_battle_mewtwo_obliterates_eevee():
     p = pokefactory.PokeFactory()
     eevee = p.make_pokemon(133, moves=["tackle", "growl"], level=5)
-    mewtwo = p.make_pokemon(151, moves=["psychic"], level=100)
+    mewtwo = p.make_pokemon(150, moves=["psychic"], level=100)
     team1 = Team([eevee])
     team2 = Team([mewtwo])
     teams = [team1, team2]
@@ -50,3 +50,32 @@ async def test_battle_mewtwo_obliterates_eevee():
     mewtwo_wins = res[0][1]
     eevee_wins = res[0][0]
     assert mewtwo_wins > eevee_wins
+
+
+@pytest.mark.asyncio()
+async def test_battle_eevee_pikachu_formats():
+    p = pokefactory.PokeFactory()
+    eevee = p.make_pokemon(133, moves=["tackle", "growl"], level=5)
+    pikachu = p.make_pokemon(25, moves=["thundershock", "growl"], level=5)
+    team1 = Team([eevee])
+    team2 = Team([pikachu])
+    teams = [team1, team2]
+    matches = [[0, 1]]
+    counter = iter(range(10, 20))
+    battle_formats = [
+        "gen4anythinggoes",
+        "gen6anythinggoes",
+        "gen7anythinggoes",
+        "gen8anythinggoes",
+    ]
+    for battle_format in battle_formats:
+        player_1 = SimpleHeuristicsPlayer(
+            PlayerConfiguration(f"Player {next(counter)}", None),
+            battle_format=battle_format,
+        )
+        player_2 = SimpleHeuristicsPlayer(
+            PlayerConfiguration(f"Player {next(counter)}", None),
+            battle_format=battle_format,
+        )
+        res = await run_battles(matches, teams, player_1, player_2, battles_per_match=1)
+        assert res is not None