diff --git a/test/battle/move_effect/fixed_damage_arg.c b/test/battle/move_effect/fixed_damage_arg.c
new file mode 100644
index 000000000000..6d96b435dbbf
--- /dev/null
+++ b/test/battle/move_effect/fixed_damage_arg.c
@@ -0,0 +1,41 @@
+#include "global.h"
+#include "test/battle.h"
+
+ASSUMPTIONS
+{
+    ASSUME(gMovesInfo[MOVE_SONIC_BOOM].effect == EFFECT_FIXED_DAMAGE_ARG);
+}
+
+SINGLE_BATTLE_TEST("Sonic Boom deals fixed damage", s16 damage)
+{
+    u16 mon;
+    PARAMETRIZE { mon = SPECIES_RATTATA; }
+    PARAMETRIZE { mon = SPECIES_ARON; }
+    
+    GIVEN {
+        ASSUME(gMovesInfo[MOVE_SONIC_BOOM].argument == 20);
+        PLAYER(SPECIES_WOBBUFFET);
+        OPPONENT(mon);
+    } WHEN {
+        TURN { MOVE(player, MOVE_SONIC_BOOM); }
+    } SCENE {
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_SONIC_BOOM, player);
+        HP_BAR(opponent, captureDamage: &results[i].damage);
+    } FINALLY {
+        EXPECT(results[0].damage == 20);
+        EXPECT(results[1].damage == 20);
+    }
+}
+
+SINGLE_BATTLE_TEST("Sonic Boom doesn't affect ghost types")
+{
+    GIVEN {
+        PLAYER(SPECIES_WOBBUFFET);
+        OPPONENT(SPECIES_GASTLY);
+    } WHEN {
+        TURN { MOVE(player, MOVE_SONIC_BOOM); }
+    } SCENE {
+        NOT ANIMATION(ANIM_TYPE_MOVE, MOVE_SONIC_BOOM, player);
+        MESSAGE("It doesn't affect Foe Gastly…");
+    }
+}