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package game
// Regression tests for the second hardening pass: transactional trigger
// effects, ammo preservation on death, and safespot clearing on teleport.
import (
"path/filepath"
"testing"
"thehouseoficarus/internal/behavior"
"thehouseoficarus/internal/item"
"thehouseoficarus/internal/player"
)
func seedBatchItems(t *testing.T, dir string) {
t.Helper()
writeSeedFile(t, filepath.Join(dir, "items", "cowhide.yaml"),
[]byte("id: cowhide\nname: cowhide\nvalue: 1\n"))
writeSeedFile(t, filepath.Join(dir, "items", "leather.yaml"),
[]byte("id: leather\nname: leather\nvalue: 1\nstackable: true\n"))
writeSeedFile(t, filepath.Join(dir, "items", "rock.yaml"),
[]byte("id: rock\nname: rock\nvalue: 1\n"))
writeSeedFile(t, filepath.Join(dir, "items", "arrow.yaml"),
[]byte("id: arrow\nname: arrow\nvalue: 1\nstackable: true\n"))
writeSeedFile(t, filepath.Join(dir, "items", "helm.yaml"),
[]byte("id: helm\nname: helm\nvalue: 100\n"))
writeSeedFile(t, filepath.Join(dir, "items", "body.yaml"),
[]byte("id: body\nname: body\nvalue: 100\n"))
writeSeedFile(t, filepath.Join(dir, "items", "sword.yaml"),
[]byte("id: sword\nname: sword\nvalue: 100\n"))
}
// TestApplyStepUnaffordablePurchaseIsAtomic: a step that both sets a flag and
// charges credits must apply nothing when the player cannot afford it.
func TestApplyStepUnaffordablePurchaseIsAtomic(t *testing.T) {
h := newHarness(t)
seedBatchItems(t, h.dir)
h.g.ItemStore.Reload(h.dir)
h.seedAccount("alice")
h.seedCharacter("alice", "alice")
sess, _ := h.connect("alice")
p := sess.Player
p.Credits = 0
p.Flags = map[string]any{}
step := &behavior.Step{Credits: -10, SetPlayerFlags: map[string]any{"bought": true}}
if h.g.applyStep(sess, p, step, p.RoomID, scopePlayer, nil) {
t.Fatal("unaffordable purchase reported success")
}
if _, ok := p.Flags["bought"]; ok {
t.Fatal("flag granted on a failed purchase")
}
if p.Credits != 0 {
t.Fatalf("credits changed on a failed purchase: %d", p.Credits)
}
}
// TestApplyStepFullInventoryTradeIsAtomic: a take+give+charge step with no
// room for the reward must consume nothing and charge nothing.
func TestApplyStepFullInventoryTradeIsAtomic(t *testing.T) {
h := newHarness(t)
seedBatchItems(t, h.dir)
h.g.ItemStore.Reload(h.dir)
h.seedAccount("alice")
h.seedCharacter("alice", "alice")
sess, _ := h.connect("alice")
p := sess.Player
p.Inventory = make(map[int]*player.InventorySlot)
p.SetInvSlot(0, &player.InventorySlot{ItemID: "cowhide", Quantity: 1})
for i := 1; i < 28; i++ {
p.SetInvSlot(i, &player.InventorySlot{ItemID: "rock", Quantity: 1})
}
p.Credits = 100
step := &behavior.Step{TakeItem: "cowhide", GiveItem: "leather", Credits: -10}
if h.g.applyStep(sess, p, step, p.RoomID, scopePlayer, nil) {
t.Fatal("full-inventory trade reported success")
}
if !p.HasItem("cowhide") {
t.Fatal("cowhide consumed on a failed trade")
}
if p.HasItem("leather") {
t.Fatal("leather delivered on a failed trade")
}
if p.Credits != 100 {
t.Fatalf("credits charged on a failed trade: %d", p.Credits)
}
}
// TestApplyStepStackableRewardMergesWhenFull: a stackable reward that fits an
// existing stack must still be delivered when every slot is occupied.
func TestApplyStepStackableRewardMergesWhenFull(t *testing.T) {
h := newHarness(t)
seedBatchItems(t, h.dir)
h.g.ItemStore.Reload(h.dir)
h.seedAccount("alice")
h.seedCharacter("alice", "alice")
sess, _ := h.connect("alice")
p := sess.Player
p.Inventory = make(map[int]*player.InventorySlot)
p.SetInvSlot(0, &player.InventorySlot{ItemID: "leather", Quantity: 1})
for i := 1; i < 28; i++ {
p.SetInvSlot(i, &player.InventorySlot{ItemID: "rock", Quantity: 1})
}
if !h.g.applyStep(sess, p, &behavior.Step{GiveItem: "leather"}, p.RoomID, scopePlayer, nil) {
t.Fatal("stackable reward should merge into a full inventory")
}
if slot := p.InvSlot(0); slot == nil || slot.Quantity != 2 {
t.Fatalf("reward did not merge into the existing stack: %+v", slot)
}
}
// TestDropItemsOnDeathPreservesAmmoStack: an equipped ammo stack must be
// dropped in full (and AmmoQty cleared), not silently reduced to one unit.
func TestDropItemsOnDeathPreservesAmmoStack(t *testing.T) {
h := newHarness(t)
seedBatchItems(t, h.dir)
h.g.ItemStore.Reload(h.dir)
p := player.New("alice")
p.RoomID = 1
p.Credits = 0
p.Equipment = map[item.EquipSlot]string{
item.SlotAmmo: "arrow",
item.SlotHead: "helm",
item.SlotTorso: "body",
item.SlotMainHand: "sword",
}
p.AmmoQty = 50
h.g.RunOnOwner(func() {
h.g.dropItemsOnDeath(p)
})
if p.AmmoQty != 0 {
t.Fatalf("AmmoQty not cleared after the stack dropped: %d", p.AmmoQty)
}
ground := h.g.World.GroundItems(p.RoomID)
if ground["arrow"] != 50 {
t.Fatalf("ammo stack not preserved on the ground: %+v", ground)
}
}
// TestTeleportPlayerClearsSafespot: cover immunity must not follow a teleport
// into a room with no cover.
func TestTeleportPlayerClearsSafespot(t *testing.T) {
h := newHarness(t)
h.seedAccount("alice")
h.seedCharacter("alice", "alice")
sess, _ := h.connect("alice")
p := sess.Player
h.g.safespot.Set(p.Name, SafespotState{Active: true, RoomID: p.RoomID, ObjectDefID: "rock"})
h.g.RunOnOwner(func() {
h.g.teleportPlayer(sess, p, 2)
})
if h.g.safespot.Has(p.Name) {
t.Fatal("safespot survived a teleport")
}
if p.RoomID != 2 {
t.Fatalf("room after teleport = %d, want 2", p.RoomID)
}
}
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