# tests/unit/presentation/settings_store_test.gd — 设置存储单元契约（回读/缺省/应用链）
# 断言面 = SettingsStore 公开方法：save_settings/load_settings 持久化回读、缺文件出厂默认、
# apply() 引擎档应用（UiKit.motion_scale 双态）。隔离卫生：一律经 _init path 注入指向临时 cfg，
# 禁碰真实 user://settings.cfg（ui_click_probe 设置面段同款纪律）。
# 运行：godot --headless --path game --script res://tests/unit/presentation/settings_store_test.gd
extends SceneTree

const Kit := preload("res://tests/unit/test_kit.gd")
const StoreScript := preload("res://presentation/settings_store.gd")

const ISO_PATH := "user://settings_store_unit_test.cfg"   # 隔离注路径（临时件——测毕清理）


func _init() -> void:
	_test_settings_roundtrip()
	_test_settings_default()
	_test_settings_apply_chain()
	_cleanup()
	quit(Kit.finish("settings_store_test"))


func _cleanup() -> void:
	DirAccess.remove_absolute(ProjectSettings.globalize_path(ISO_PATH))


# ---- 持久化回读（写 true→存→新实例回读 true；节/键 motion/reduced）----

func _test_settings_roundtrip() -> void:
	var w = StoreScript.new(ISO_PATH)
	w.reduced_motion = true
	Kit.check("前置：save_settings 落盘成功", w.save_settings())
	var r = StoreScript.new(ISO_PATH)
	r.load_settings()
	Kit.check("持久化回读：新实例回读 reduced_motion=true（motion/reduced 节键）〔断言补齐批 V6〕", r.reduced_motion == true)
	w.reduced_motion = false
	Kit.check("回写往返：改 false 再存再读得 false〔断言补齐批 V6〕", w.save_settings() and (func():
		var r2 = StoreScript.new(ISO_PATH)
		r2.load_settings()
		return r2.reduced_motion == false).call())


# ---- 缺省值（无文件缺省 false）----

func _test_settings_default() -> void:
	var absent_path := "user://settings_store_unit_absent_%d.cfg" % (Time.get_ticks_msec())
	DirAccess.remove_absolute(ProjectSettings.globalize_path(absent_path))   # 确保无文件
	var d = StoreScript.new(absent_path)
	d.load_settings()
	Kit.check("无文件缺省：reduced_motion=false（缺文件=出厂默认合法态）〔断言补齐批 V7〕", d.reduced_motion == false)


# ---- 引擎档应用链（reduced→apply()→UiKit.motion_scale==0.5，false→1.0；测毕还原静态初值）----

func _test_settings_apply_chain() -> void:
	var saved_scale: float = UiKit.motion_scale   # 静态初值留底——测毕还原
	var a = StoreScript.new(ISO_PATH)
	a.reduced_motion = true
	a.apply()
	Kit.check("应用链：reduced=true → UiKit.motion_scale==0.5〔断言补齐批 V8〕", UiKit.motion_scale == 0.5)
	a.reduced_motion = false
	a.apply()
	Kit.check("应用链：reduced=false → UiKit.motion_scale==1.0〔断言补齐批 V8〕", UiKit.motion_scale == 1.0)
	UiKit.motion_scale = saved_scale   # 还原（静态共享面——不渗入其他套件）