[P1 Bug] Fix softlock when a phazing attack activates a reviver seed

src/data/move.ts

@@ -5457,7 +5457,7 @@ export class ForceSwitchOutAttr extends MoveEffectAttr {
     private selfSwitch: boolean = false,
     private switchType: SwitchType = SwitchType.SWITCH
   ) {
-    super(false, MoveEffectTrigger.POST_APPLY, false, true);
+    super(selfSwitch, MoveEffectTrigger.POST_APPLY, false, true);
   }
 
   isBatonPass() {
@@ -5465,6 +5465,10 @@ export class ForceSwitchOutAttr extends MoveEffectAttr {
   }
 
   apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
+    if (!super.apply(user, target, move, args)) {
+      return false;
+    }
+
     // Check if the move category is not STATUS or if the switch out condition is not met
     if (!this.getSwitchOutCondition()(user, target, move)) {
       return false;

src/test/moves/dragon_tail.test.ts

@@ -139,4 +139,55 @@ describe("Moves - Dragon Tail", () => {
 
     expect(enemy.isFullHp()).toBe(false);
   });
+
+  it("should force a switch upon fainting an opponent normally", async () => {
+    game.override.startingWave(5)
+      .startingLevel(1000); // To make sure Dragon Tail KO's the opponent
+    await game.classicMode.startBattle([ Species.DRATINI ]);
+
+    game.move.select(Moves.DRAGON_TAIL);
+
+    await game.toNextWave();
+
+    // Make sure the enemy switched to a healthy Pokemon
+    const enemy = game.scene.getEnemyPokemon()!;
+    expect(enemy).toBeDefined();
+    expect(enemy.isFullHp).toBeTruthy();
+
+    // Make sure the enemy has a fainted Pokemon in their party
+    const faintedEnemy = game.scene.getEnemyParty().find(p => !p.isAllowedInBattle());
+    expect(faintedEnemy).toBeDefined();
+  });
+
+  it("should not cause a softlock when activating an opponent trainer's reviver seed", async () => {
+    game.override.startingWave(5)
+      .enemyHeldItems([{ name: "REVIVER_SEED" }])
+      .startingLevel(1000); // To make sure Dragon Tail KO's the opponent
+    await game.classicMode.startBattle([ Species.DRATINI ]);
+
+    game.move.select(Moves.DRAGON_TAIL);
+
+    await game.toNextWave();
+
+    // Make sure the enemy field is not empty and has a revived Pokemon
+    const enemy = game.scene.getEnemyPokemon()!;
+    expect(enemy).toBeDefined();
+    expect(enemy.hp).toBe(Math.floor(enemy.getMaxHp() / 2));
+  });
+
+  it("should not cause a softlock when activating a player's reviver seed", async () => {
+    game.override.startingHeldItems([{ name: "REVIVER_SEED" }])
+      .enemyMoveset(Moves.DRAGON_TAIL)
+      .enemyLevel(1000); // To make sure Dragon Tail KO's the player
+    await game.classicMode.startBattle([ Species.DRATINI, Species.BULBASAUR ]);
+
+    game.move.select(Moves.SPLASH);
+
+    await game.toNextWave();
+
+    // Make sure the player's field is not empty and has a revived Pokemon
+    const dratini = game.scene.getPlayerPokemon()!;
+    expect(dratini).toBeDefined();
+    expect(dratini.hp).toBe(Math.floor(dratini.getMaxHp() / 2));
+  });
 });

src/test/moves/u_turn.test.ts

@@ -96,4 +96,19 @@ describe("Moves - U-turn", () => {
     expect(game.scene.getEnemyPokemon()!.battleData.abilityRevealed).toBe(true); // proxy for asserting ability activated
     expect(game.phaseInterceptor.log).not.toContain("SwitchSummonPhase");
   }, 20000);
+
+  it("still forces a switch if u-turn KO's the opponent", async () => {
+    game.override.startingLevel(1000); // Ensure that U-Turn KO's the opponent
+    await game.classicMode.startBattle([
+      Species.RAICHU,
+      Species.SHUCKLE
+    ]);
+
+    game.move.select(Moves.U_TURN);
+    game.doSelectPartyPokemon(1);
+    await game.phaseInterceptor.to(TurnEndPhase);
+
+    expect(game.phaseInterceptor.log).toContain("SwitchSummonPhase");
+    expect(game.scene.getPlayerPokemon()!.species.speciesId).toBe(Species.SHUCKLE);
+  });
 });