Added Weight battle tests (#9202)

test/battle/ability/heavy_metal.c

@@ -1,4 +1,4 @@
 #include "global.h"
 #include "test/battle.h"
 
-TO_DO_BATTLE_TEST("TODO: Write Heavy Metal (Ability) test titles")
+// Tests for Heavy Metal are handled in test/battle/ability/light_metal.c

test/battle/ability/light_metal.c

@@ -1,4 +1,30 @@
 #include "global.h"
 #include "test/battle.h"
 
-TO_DO_BATTLE_TEST("TODO: Write Light Metal (Ability) test titles")
+SINGLE_BATTLE_TEST("Light Metal and Heavy Metal affect the power of Low Kick", s16 damage)
+{
+    enum Ability ability;
+    PARAMETRIZE { ability = ABILITY_LIGHT_METAL; } //  10.0 - 24.9 kg  (40 power)
+    PARAMETRIZE { ability = ABILITY_STALWART;    } //  25.0 - 49.9 kg  (60 power)
+    PARAMETRIZE { ability = ABILITY_HEAVY_METAL; } //  50.0 - 99.9 kg  (80 power)
+
+    GIVEN {
+        ASSUME(GetMoveEffect(MOVE_SOAK) == EFFECT_SOAK);
+        ASSUME(GetMoveArgType(MOVE_SOAK) == TYPE_WATER);
+        ASSUME(GetSpeciesWeight(SPECIES_DURALUDON) == 400);
+        PLAYER(SPECIES_WOBBUFFET);
+        OPPONENT(SPECIES_DURALUDON) { Ability(ability); }
+    } WHEN {
+        TURN { MOVE(player, MOVE_SOAK); } // To remove super-effectiveness, as it was messing with calculations.
+        TURN { MOVE(player, MOVE_LOW_KICK); }
+    } SCENE {
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_LOW_KICK, player);
+        HP_BAR(opponent, captureDamage: &results[i].damage);
+    } THEN {
+        // Calc 20 power increase, with the first iteration being 40 power
+        if (i != 0)
+            EXPECT_MUL_EQ(results[0].damage, Q_4_12((i * 0.5) + 1), results[i].damage);
+    }
+}
+
+TO_DO_BATTLE_TEST("Light Metal and Heavy Metal don't affect Heavy Ball's multiplier")

test/battle/hold_effect/float_stone.c

@@ -1,4 +1,32 @@
 #include "global.h"
 #include "test/battle.h"
 
-TO_DO_BATTLE_TEST("TODO: Write Float Stone (Hold Effect) test titles")
+ASSUMPTIONS
+{
+    ASSUME(GetItemHoldEffect(ITEM_FLOAT_STONE) == HOLD_EFFECT_FLOAT_STONE);
+}
+
+SINGLE_BATTLE_TEST("Float Stone halves the holder's weight", s16 damage)
+{
+    u32 item;
+    PARAMETRIZE { item = ITEM_FLOAT_STONE; } //  10.0 - 24.9 kg  (40 power)
+    PARAMETRIZE { item = ITEM_NONE;        } //  25.0 - 49.9 kg  (60 power)
+
+    GIVEN {
+        ASSUME(GetMoveEffect(MOVE_SOAK) == EFFECT_SOAK);
+        ASSUME(GetMoveArgType(MOVE_SOAK) == TYPE_WATER);
+        ASSUME(GetSpeciesWeight(SPECIES_DURALUDON) == 400);
+        PLAYER(SPECIES_WOBBUFFET);
+        OPPONENT(SPECIES_DURALUDON) { Ability(ABILITY_STALWART); Item(item); }
+    } WHEN {
+        TURN { MOVE(player, MOVE_SOAK); } // To remove super-effectiveness, as it was messing with calculations.
+        TURN { MOVE(player, MOVE_LOW_KICK); }
+    } SCENE {
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_LOW_KICK, player);
+        HP_BAR(opponent, captureDamage: &results[i].damage);
+    } FINALLY {
+        EXPECT_MUL_EQ(results[0].damage, Q_4_12(1.5), results[1].damage);
+    }
+}
+
+TO_DO_BATTLE_TEST("Float Stone doesn't affect Heavy Ball's multiplier")

test/battle/move_effect/autotomize.c

@@ -1,12 +1,45 @@
 #include "global.h"
 #include "test/battle.h"
 
-TO_DO_BATTLE_TEST("Autotomize increases Speed by 2 stages");
-TO_DO_BATTLE_TEST("Autotomize decreases weight by 100kg (220 lbs.)");
-TO_DO_BATTLE_TEST("Autotomize can be used multiple times to decrease weight each time");
+TO_DO_BATTLE_TEST("Autotomize increases Speed by 2 stages")
+
+SINGLE_BATTLE_TEST("Autotomize decreases weight by 100kg (220 lbs.) each time it's used")
+{
+    s16 damage[3];
+
+    GIVEN {
+        ASSUME(GetSpeciesWeight(SPECIES_METANG) == 2025);
+        PLAYER(SPECIES_WOBBUFFET);
+        OPPONENT(SPECIES_METANG);
+    } WHEN {
+        TURN { MOVE(player, MOVE_LOW_KICK); }
+        TURN { MOVE(opponent, MOVE_AUTOTOMIZE); MOVE(player, MOVE_LOW_KICK); }
+        TURN { MOVE(opponent, MOVE_AUTOTOMIZE); MOVE(player, MOVE_LOW_KICK); }
+    } SCENE {
+        // 200.0 kg or more (120 power)
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_LOW_KICK, player);
+        HP_BAR(opponent, captureDamage: &damage[0]);
+
+        // 100.0 - 199.9 kg (100 power)
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_AUTOTOMIZE, opponent);
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_LOW_KICK, player);
+        HP_BAR(opponent, captureDamage: &damage[1]);
+
+        //   0.1 - 9.9 kg   (20 power)
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_AUTOTOMIZE, opponent);
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_LOW_KICK, player);
+        HP_BAR(opponent, captureDamage: &damage[2]);
+    } THEN {
+        EXPECT_MUL_EQ(damage[2], Q_4_12(6.0), damage[0]);
+        EXPECT_MUL_EQ(damage[2], Q_4_12(5.0), damage[0]);
+    }
+}
+
+
 TO_DO_BATTLE_TEST("Autotomize cannot decrease weight below 0.1kg (0.2 lbs)");
 TO_DO_BATTLE_TEST("Autotomize's weight reduction cannot be Baton Passed");
 TO_DO_BATTLE_TEST("Autotomize's weight reduction cannot be removed by Haze");
 TO_DO_BATTLE_TEST("Autotomize's weight reduction is reset upon form change (Gen6+)");
 TO_DO_BATTLE_TEST("Autotomize's weight reduction is reset upon switch");
 TO_DO_BATTLE_TEST("Autotomize's weight reduction is reset upon fainting");
+TO_DO_BATTLE_TEST("Autotomize doesn't affect Heavy Ball's multiplier")

test/battle/move_effect/low_kick.c

@@ -1,4 +1,29 @@
 #include "global.h"
 #include "test/battle.h"
 
-TO_DO_BATTLE_TEST("TODO: Write Low Kick (Move Effect) test titles")
+SINGLE_BATTLE_TEST("Low Kick's damage varies based on the target's weight", s16 damage)
+{
+    u32 species, weight;
+
+    PARAMETRIZE { species = SPECIES_CUBONE;     weight = 65;   } //   0.1 - 9.9 kg   (20 power)
+    PARAMETRIZE { species = SPECIES_SANDSHREW;  weight = 120;  } //  10.0 - 24.9 kg  (40 power)
+    PARAMETRIZE { species = SPECIES_MAROWAK;    weight = 450;  } //  25.0 - 49.9 kg  (60 power)
+    PARAMETRIZE { species = SPECIES_SANDACONDA; weight = 655;  } //  50.0 - 99.9 kg  (80 power)
+    PARAMETRIZE { species = SPECIES_DONPHAN;    weight = 1200; } // 100.0 - 199.9 kg (100 power)
+    PARAMETRIZE { species = SPECIES_HIPPOWDON;  weight = 3000; } // 200.0 kg or more (120 power)
+
+    GIVEN {
+        ASSUME(GetSpeciesWeight(species) == weight);
+        PLAYER(SPECIES_WOBBUFFET);
+        OPPONENT(species) { Defense(170); } // Cubone's Defense, the lowest one in hopes of avoid distorting the results.
+    } WHEN {
+        TURN { MOVE(player, MOVE_LOW_KICK); }
+    } SCENE {
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_LOW_KICK, player);
+        HP_BAR(opponent, captureDamage: &results[i].damage);
+    } THEN {
+        // Since Low Kick increases by 20 each tier, multiply by tier number to compare with the first tier.
+        if (i != 0)
+            EXPECT_MUL_EQ(results[0].damage, Q_4_12(i + 1), results[i].damage);
+    }
+}

test/battle/move_effect/sky_drop.c

@@ -68,7 +68,7 @@ DOUBLE_BATTLE_TEST("Sky Drop is cancelled if Gravity activated")
     }
 }
 
-SINGLE_BATTLE_TEST("Sky Drop fails on heavy targets")
+SINGLE_BATTLE_TEST("Sky Drop fails on targets heavier or equal than 200kg")
 {
     GIVEN {
         ASSUME(gSpeciesInfo[SPECIES_METAGROSS].weight >= 2000);