Test battlers always have their forced abilities (#4707)

* Test battlers always have their forced abilities

* indentation

src/battle_controllers.c

@@ -1609,6 +1609,15 @@ static u32 GetBattlerMonData(u32 battler, struct Pokemon *party, u32 monId, u8 *
         src = (u8 *)&battleMon;
         for (size = 0; size < sizeof(battleMon); size++)
             dst[size] = src[size];
+        #if TESTING
+        if (gTestRunnerEnabled)
+        {
+            u32 side = GetBattlerSide(battler);
+            u32 partyIndex = gBattlerPartyIndexes[battler];
+            if (TestRunner_Battle_GetForcedAbility(side, partyIndex))
+                gBattleMons[battler].ability = gBattleStruct->overwrittenAbilities[battler] = TestRunner_Battle_GetForcedAbility(side, partyIndex);
+        }
+        #endif
         break;
     case REQUEST_SPECIES_BATTLE:
         data16 = GetMonData(&party[monId], MON_DATA_SPECIES);

src/battle_main.c

@@ -3477,6 +3477,15 @@ static void DoBattleIntro(void)
                 gBattleMons[battler].status2 = 0;
                 for (i = 0; i < NUM_BATTLE_STATS; i++)
                     gBattleMons[battler].statStages[i] = DEFAULT_STAT_STAGE;
+                #if TESTING
+                if (gTestRunnerEnabled)
+                {
+                    u32 side = GetBattlerSide(battler);
+                    u32 partyIndex = gBattlerPartyIndexes[battler];
+                    if (TestRunner_Battle_GetForcedAbility(side, partyIndex))
+                        gBattleMons[battler].ability = gBattleStruct->overwrittenAbilities[battler] = TestRunner_Battle_GetForcedAbility(side, partyIndex);
+                }
+                #endif
             }
 
             // Draw sprite.

src/battle_script_commands.c

@@ -6518,6 +6518,15 @@ static void Cmd_switchindataupdate(void)
     gBattleMons[battler].type2 = gSpeciesInfo[gBattleMons[battler].species].types[1];
     gBattleMons[battler].type3 = TYPE_MYSTERY;
     gBattleMons[battler].ability = GetAbilityBySpecies(gBattleMons[battler].species, gBattleMons[battler].abilityNum);
+    #if TESTING
+    if (gTestRunnerEnabled)
+    {
+        u32 side = GetBattlerSide(battler);
+        u32 partyIndex = gBattlerPartyIndexes[battler];
+        if (TestRunner_Battle_GetForcedAbility(side, partyIndex))
+            gBattleMons[battler].ability = gBattleStruct->overwrittenAbilities[battler] = TestRunner_Battle_GetForcedAbility(side, partyIndex);
+    }
+    #endif
 
     // check knocked off item
     i = GetBattlerSide(battler);
@@ -13232,7 +13241,17 @@ static void Cmd_healpartystatus(void)
                 else if (isDoublesPartner)
                     ability = GetBattlerAbility(partner);
                 else
+                {
                     ability = GetAbilityBySpecies(species, abilityNum);
+                    #if TESTING
+                    if (gTestRunnerEnabled)
+                    {
+                        u32 side = GetBattlerSide(gBattlerAttacker);
+                        if (TestRunner_Battle_GetForcedAbility(side, i))
+                            ability = TestRunner_Battle_GetForcedAbility(side, i);
+                    }
+                    #endif
+                }
 
                 if (ability != ABILITY_SOUNDPROOF)
                     toHeal |= (1 << i);

test/battle/test_runner_features.c

@@ -0,0 +1,27 @@
+#include "global.h"
+#include "test/battle.h"
+
+ASSUMPTIONS {
+    int i;
+    for (i = 0; i < NUM_ABILITY_SLOTS; i++) {
+        ASSUME(gSpeciesInfo[SPECIES_KADABRA].abilities[i] != ABILITY_QUARK_DRIVE);
+        ASSUME(gSpeciesInfo[SPECIES_ALAKAZAM].abilities[i] != ABILITY_ELECTRIC_SURGE);
+    }
+}
+
+SINGLE_BATTLE_TEST("Forced abilities activate on switch-in")
+{
+    GIVEN {
+        PLAYER(SPECIES_ALAKAZAM);
+        PLAYER(SPECIES_KADABRA) { Ability(ABILITY_QUARK_DRIVE); SpAttack(400);}
+        OPPONENT(SPECIES_ARON);
+        OPPONENT(SPECIES_ALAKAZAM) { Ability(ABILITY_ELECTRIC_SURGE); };
+    } WHEN {
+        TURN { SWITCH(player, 1); SWITCH(opponent, 1);}
+    } SCENE {
+        ABILITY_POPUP(opponent, ABILITY_ELECTRIC_SURGE);
+        ABILITY_POPUP(player, ABILITY_QUARK_DRIVE);
+        MESSAGE("The Electric Terrain activated Kadabra's Quark Drive!");
+        MESSAGE("Kadabra's Sp. Atk was heightened!");
+    }
+}

test/test_runner_battle.c

@@ -1624,6 +1624,7 @@ void Ability_(u32 sourceLine, u32 ability)
     u32 species;
     const struct SpeciesInfo *info;
     INVALID_IF(!DATA.currentMon, "Ability outside of PLAYER/OPPONENT");
+    INVALID_IF(ability >= ABILITIES_COUNT, "Illegal ability id: %d", ability);
     species = GetMonData(DATA.currentMon, MON_DATA_SPECIES);
     info = &gSpeciesInfo[species];
     for (i = 0; i < NUM_ABILITY_SLOTS; i++)