gen1recomp/tests/engine/exp_traded_ot_survives_reload_bug1265.lua

-- engine/battle/experience.asm:69

package.path = "./?.lua;./?/init.lua;" .. package.path

love = require("tests.love_stub")

local T = require("tests.harness")
local BattleState = require("src.battle.BattleState")

local function newSave()
  return { player = { id = 12345, name = "RED" } }
end

do
  local save = newSave()
  local homegrown = {}
  BattleState.stampOT(save, homegrown)
  T.eq(homegrown.otId, 12345, "a home-grown mon is still stamped with the player id")
  T.eq(homegrown.ot, "RED", "and the player's own name")
end

-- The bug: a mon that arrived traded (traded = true) but whose OT id was
-- never recorded (a legacy peer, a link mon with no otId in its packet) used
-- to get save.player.id written into otId on the very first load, which then
-- reads identically to a mon the player caught -- awardExp's OT-id compare
-- (BattleState.lua ~4009) permanently loses the 1.5x boost.
do
  local save = newSave()
  local tradedNoId = { traded = true }
  BattleState.stampOT(save, tradedNoId)
  T.eq(tradedNoId.otId, nil,
    "a traded mon with no OT id is left unstamped, not silently adopted")
  T.eq(tradedNoId.ot, "RED",
    "the OT NAME fill still happens (cosmetic, not the boost gate)")
  -- a second stampOT pass (a second save/load cycle) must not adopt it either
  BattleState.stampOT(save, tradedNoId)
  T.eq(tradedNoId.otId, nil, "repeated reloads do not eventually stamp it")
end

-- A mon with its own foreign OT id (the ordinary traded-in case) is untouched
-- either way; this is the arm the regression never broke.
do
  local save = newSave()
  local tradedWithId = { traded = true, otId = 777 }
  BattleState.stampOT(save, tradedWithId)
  T.eq(tradedWithId.otId, 777, "a recorded foreign OT id is never overwritten")
end

T.finish("exp traded ot survives reload bug 1265")