add mirror herb tests

test/hold_effect_mirror_herb.c

@@ -0,0 +1,51 @@
+#include "global.h"
+#include "test_battle.h"
+
+ASSUMPTIONS
+{
+    gItems[ITEM_MIRROR_HERB].holdEffect == HOLD_EFFECT_MIRROR_HERB;
+};
+
+SINGLE_BATTLE_TEST("Mirror Herb copies all of foe's stat changes in a turn", s16 damage)
+{
+    u32 item;
+    PARAMETRIZE{ item = ITEM_NONE; }
+    PARAMETRIZE{ item = ITEM_MIRROR_HERB; }
+    GIVEN {
+        ASSUME(gItems[ITEM_MIRROR_HERB].holdEffect == HOLD_EFFECT_MIRROR_HERB);
+        PLAYER(SPECIES_WOBBUFFET) { Speed(4); }
+        OPPONENT(SPECIES_WOBBUFFET) { Speed(5); Item(item); }
+    } WHEN {
+        TURN { MOVE(player, MOVE_DRAGON_DANCE); }
+        TURN { MOVE(player, MOVE_TACKLE); MOVE(opponent, MOVE_TACKLE); }
+    } SCENE {
+        if (item == ITEM_NONE) {
+            ANIMATION(ANIM_TYPE_MOVE, MOVE_TACKLE, player);
+            ANIMATION(ANIM_TYPE_MOVE, MOVE_TACKLE, opponent);
+            HP_BAR(player, captureDamage: &results[i].damage);
+        } else {
+            ANIMATION(ANIM_TYPE_MOVE, MOVE_TACKLE, opponent);
+            HP_BAR(player, captureDamage: &results[i].damage);
+            ANIMATION(ANIM_TYPE_MOVE, MOVE_TACKLE, player);
+        }
+    } FINALLY {
+        EXPECT_MUL_EQ(results[0].damage, Q_4_12(1.5), results[1].damage);
+        EXPECT_EQ(player->statStages[STAT_ATK], opponent->statStages[STAT_ATK]);
+        EXPECT_EQ(player->statStages[STAT_SPEED], opponent->statStages[STAT_SPEED]);
+    }
+}
+
+SINGLE_BATTLE_TEST("Mirror Herb copies all of of Stuff Cheeks", s16 damage)
+{
+    GIVEN {
+        ASSUME(gItems[ITEM_MIRROR_HERB].holdEffect == HOLD_EFFECT_MIRROR_HERB);
+        ASSUME(gItems[ITEM_LIECHI_BERRY].holdEffect == HOLD_EFFECT_ATTACK_UP);
+        PLAYER(SPECIES_SKWOVET) { Item(ITEM_LIECHI_BERRY); }
+        OPPONENT(SPECIES_WOBBUFFET) { Item(ITEM_MIRROR_HERB); }
+    } WHEN {
+        TURN { MOVE(player, MOVE_STUFF_CHEEKS); }
+    } THEN {
+        EXPECT_EQ(player->statStages[STAT_ATK], opponent->statStages[STAT_ATK]);
+        EXPECT_EQ(player->statStages[STAT_DEF], opponent->statStages[STAT_DEF]);
+    }
+}