From 416519220d54006eae2ca448c2315c6e84432efa Mon Sep 17 00:00:00 2001
From: Bassoonian <iasperbassoonian@gmail.com>
Date: Wed, 12 Jun 2024 21:52:04 +0200
Subject: [PATCH] Add evolution tracker check tests (#4771)

---
 test/species.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/test/species.c b/test/species.c
index 02827ba9c745..3ad7495d236b 100644
--- a/test/species.c
+++ b/test/species.c
@@ -85,3 +85,47 @@ TEST("Form change targets have the appropriate species flags")
        }
     }
 }
+
+TEST("No species has two evolutions that use the evolution tracker")
+{
+    u32 i;
+    u32 species = SPECIES_NONE;
+    u32 evolutionTrackerEvolutions;
+    bool32 hasGenderBasedRecoil;
+    const struct Evolution *evolutions;
+
+    for (i = 0; i < NUM_SPECIES; i++)
+    {
+        if (GetSpeciesEvolutions(i) != NULL) PARAMETRIZE { species = i; }
+    }
+
+    evolutionTrackerEvolutions = 0;
+    hasGenderBasedRecoil = FALSE;
+    evolutions = GetSpeciesEvolutions(species);
+
+    for (i = 0; evolutions[i].method != EVOLUTIONS_END; i++)
+    {
+        if (evolutions[i].method == EVO_LEVEL_MOVE_TWENTY_TIMES
+    #ifdef EVO_DEFEAT_WITH_ITEM
+         || evolutions[i].method == EVO_DEFEAT_WITH_ITEM
+    #endif //EVO_DEFEAT_WITH_ITEM
+    #ifdef EVO_OVERWORLD_STEPS
+         || evolutions[i].method == EVO_OVERWORLD_STEPS
+    #endif //EVO_OVERWORLD_STEPS
+        )
+            evolutionTrackerEvolutions++;
+
+        if (evolutions[i].method == EVO_LEVEL_RECOIL_DAMAGE_MALE
+         || evolutions[i].method == EVO_LEVEL_RECOIL_DAMAGE_FEMALE)
+        {
+            // Special handling for these since they can be combined as the evolution tracker field is used for the same purpose
+            if (!hasGenderBasedRecoil)
+            {
+                hasGenderBasedRecoil = TRUE;
+                evolutionTrackerEvolutions++;
+            }
+        }
+    }
+
+    EXPECT(evolutionTrackerEvolutions < 2);
+}