Fixed Unnerve message and wrote tests

src/battle_util.c

@@ -4629,6 +4629,7 @@ u32 AbilityBattleEffects(u32 caseID, u32 battler, u32 ability, u32 special, u32
         case ABILITY_UNNERVE:
             if (!gSpecialStatuses[battler].switchInAbilityDone)
             {
+                gBattlerTarget = GetBattlerAtPosition(BATTLE_OPPOSITE(GetBattlerAtPosition(battler)));
                 gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_UNNERVE;
                 gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                 BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
@@ -4639,6 +4640,7 @@ u32 AbilityBattleEffects(u32 caseID, u32 battler, u32 ability, u32 special, u32
         case ABILITY_AS_ONE_SHADOW_RIDER:
             if (!gSpecialStatuses[battler].switchInAbilityDone)
             {
+                gBattlerTarget = GetBattlerAtPosition(BATTLE_OPPOSITE(GetBattlerAtPosition(battler)));
                 gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_ASONE;
                 gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                 BattleScriptPushCursorAndCallback(BattleScript_ActivateAsOne);

test/battle/ability/unnerve.c

@@ -2,5 +2,73 @@
 #include "test/battle.h"
 
 // Remember to add a PARAMETRIZE for As One in the following tests:
-TO_DO_BATTLE_TEST("Unnerve prevents opposing Pokémon from eating their own berries");
-TO_DO_BATTLE_TEST("Unnerve doesn't prevent opposing Pokémon from using Natural Gift");
+SINGLE_BATTLE_TEST("Unnerve prevents opposing Pokémon from eating their own berries")
+{
+    u16 mon;
+    u16 ability;
+    PARAMETRIZE { mon = SPECIES_JOLTIK, ability = ABILITY_UNNERVE; }
+    PARAMETRIZE { mon = SPECIES_CALYREX_ICE, ability = ABILITY_AS_ONE_ICE_RIDER; }
+    GIVEN {
+        ASSUME(gItemsInfo[ITEM_RAWST_BERRY].holdEffect == HOLD_EFFECT_CURE_BRN);
+        PLAYER(mon) { Ability(ability); }
+        OPPONENT(SPECIES_WOBBUFFET) { Item(ITEM_RAWST_BERRY); Status1(STATUS1_BURN); }
+    } WHEN {
+        TURN { }
+    } SCENE {
+        ABILITY_POPUP(player, ability);
+        NOT ANIMATION(ANIM_TYPE_GENERAL, B_ANIM_HELD_ITEM_EFFECT, opponent);
+        HP_BAR(opponent);
+    }
+}
+
+SINGLE_BATTLE_TEST("Unnerve doesn't prevent opposing Pokémon from using Natural Gift")
+{
+    u16 mon;
+    u16 ability;
+    PARAMETRIZE { mon = SPECIES_JOLTIK, ability = ABILITY_UNNERVE; }
+    PARAMETRIZE { mon = SPECIES_CALYREX_ICE, ability = ABILITY_AS_ONE_ICE_RIDER; }
+    GIVEN {
+        ASSUME(gMovesInfo[MOVE_NATURAL_GIFT].effect == EFFECT_NATURAL_GIFT);
+        PLAYER(mon) { Ability(ability); }
+        OPPONENT(SPECIES_WOBBUFFET) { Item(ITEM_ORAN_BERRY); }
+    } WHEN {
+        TURN { MOVE(opponent, MOVE_NATURAL_GIFT); }
+    } SCENE {
+        ABILITY_POPUP(player, ability);
+        HP_BAR(player);
+    }
+}
+
+SINGLE_BATTLE_TEST("Unnerve prints the correct string (player)")
+{
+    u16 mon;
+    u16 ability;
+    PARAMETRIZE { mon = SPECIES_JOLTIK, ability = ABILITY_UNNERVE; }
+    PARAMETRIZE { mon = SPECIES_CALYREX_ICE, ability = ABILITY_AS_ONE_ICE_RIDER; }
+    GIVEN {
+        PLAYER(mon) { Ability(ability); }
+        OPPONENT(SPECIES_WOBBUFFET);
+    } WHEN {
+        TURN {}
+    } SCENE {
+        ABILITY_POPUP(player, ability);
+        MESSAGE("The opposing team is too nervous to eat Berries!");
+    }
+}
+
+SINGLE_BATTLE_TEST("Unnerve prints the correct string (opponent)")
+{
+    u16 mon;
+    u16 ability;
+    PARAMETRIZE { mon = SPECIES_JOLTIK, ability = ABILITY_UNNERVE; }
+    PARAMETRIZE { mon = SPECIES_CALYREX_ICE, ability = ABILITY_AS_ONE_ICE_RIDER; }
+    GIVEN {
+        PLAYER(SPECIES_WOBBUFFET);
+        OPPONENT(mon) { Ability(ability); }
+    } WHEN {
+        TURN {}
+    } SCENE {
+        ABILITY_POPUP(opponent, ability);
+        MESSAGE("Your team is too nervous to eat Berries!");
+    }
+}