extends RefCounted
## Headless tests for the runtime image loader (ADR-0014).

const UiArt := preload("res://src/game/ui/art.gd")

func test_loads_runtime_ui_art() -> bool:
	var art := UiArt.new()
	var start := art.texture("start_menu")
	var venue := art.texture("venue_overview")
	var a := TestUtils.check(start != null, "start_menu art loads from assets/images/ui")
	var b := TestUtils.check(venue != null, "venue_overview art loads from assets/images/ui")
	var c := TestUtils.check(art.has("start_menu"), "has() sees the runtime art")
	return a and b and c

func test_missing_art_returns_null() -> bool:
	var art := UiArt.new()
	var missing := art.texture("does_not_exist")
	var empty := art.texture("")
	var a := TestUtils.check(missing == null, "missing art returns null for a fallback")
	var b := TestUtils.check(empty == null, "empty name returns null")
	return a and b

func test_explicit_relative_path() -> bool:
	var art := UiArt.new()
	var texture := art.texture_at("ui/start_menu.png")
	var missing := art.texture_at("ui/nope.png")
	var a := TestUtils.check(texture != null, "texture_at loads an explicit path")
	var b := TestUtils.check(missing == null, "texture_at returns null when absent")
	return a and b

func test_cache_returns_the_same_resource() -> bool:
	var art := UiArt.new()
	var first := art.texture("start_menu")
	var second := art.texture("start_menu")
	var a := TestUtils.check(first != null and first == second, "textures are cached")
	art.clear_cache()
	var b := TestUtils.check(art.texture("start_menu") != null, "cache can be cleared")
	return a and b