feat(client): MoveApplier — validated moves to game state

client/tests/unit/test_move_applier.gd

@@ -0,0 +1,55 @@
+# client/tests/unit/test_move_applier.gd
+extends "res://addons/gut/test.gd"
+
+const MoveApplier = preload("res://scripts/npc/move_applier.gd")
+const ContentDB = preload("res://scripts/content/content_db.gd")
+
+
+func _m(name, args := []) -> Dictionary:
+	return {"name": name, "args": args}
+
+
+func _content() -> ContentDB:
+	var c = ContentDB.new()
+	c.quests = {"find_the_ledger": {"id": "find_the_ledger",
+		"name": "The Missing Ledger", "objective": "Find who took it"}}
+	return c
+
+
+func test_offer_quest_adds_active_quest():
+	var log = CanonLog.new()
+	MoveApplier.apply([_m("offer_quest", ["find_the_ledger"])],
+		GameState.new(), log, _content(), "fenn")
+	assert_true(log.has_quest("find_the_ledger"))
+	assert_eq(log.active_quests[0].name, "The Missing Ledger")
+
+
+func test_reveal_marks_topic():
+	var gs = GameState.new()
+	MoveApplier.apply([_m("reveal", ["varrell_twins"])], gs, CanonLog.new(), _content(), "fenn")
+	assert_true(gs.is_revealed("varrell_twins"))
+
+
+func test_adjust_disposition_clamps_to_max_delta():
+	var gs = GameState.new()
+	MoveApplier.apply([_m("adjust_disposition", ["+50"])], gs, CanonLog.new(), _content(), "fenn")
+	assert_eq(gs.npc_dispositions.get("fenn", 0), MoveApplier.MAX_DELTA)
+
+
+func test_become_hostile_sets_floor():
+	var gs = GameState.new()
+	MoveApplier.apply([_m("become_hostile")], gs, CanonLog.new(), _content(), "fenn")
+	assert_eq(gs.npc_dispositions.get("fenn", 0), MoveApplier.HOSTILE_FLOOR)
+
+
+func test_accept_item_removes_from_inventory():
+	var gs = GameState.new()
+	gs.add_item("coin", 2)
+	MoveApplier.apply([_m("accept_item", ["coin"])], gs, CanonLog.new(), _content(), "fenn")
+	assert_eq(gs.inventory.get("coin", 0), 1)
+
+
+func test_refuse_and_end_are_noops():
+	var gs = GameState.new()
+	MoveApplier.apply([_m("refuse"), _m("end_conversation")], gs, CanonLog.new(), _content(), "fenn")
+	assert_eq(gs.npc_dispositions.size(), 0)