# test_intro_loading_parity.gd —— 40250 官方插画过场加载与 Tip 轮播回归测试
extends SceneTree

const SystemClass = preload("res://intro_loading_phase.gd")

var _passed: int = 0
var _failed: int = 0

func _assert(cond: bool, msg: String) -> void:
	if cond:
		_passed += 1
		print("  [PASS] %s" % msg)
	else:
		_failed += 1
		printerr("  [FAIL] %s" % msg)

func _init() -> void:
	print("\n=== Running test_intro_loading_parity (Batch 30 Direction 2) ===")
	_test_loading_wallpapers_and_tips()
	_test_step_by_step_progress_stream()
	_test_completion_flow()

	print("\n=== Result: %d Passed, %d Failed ===" % [_passed, _failed])
	if _failed == 0:
		print("ALL TESTS PASSED!\n")
	else:
		printerr("SOME TESTS FAILED!\n")
	quit(0 if _failed == 0 else 1)

func _test_loading_wallpapers_and_tips() -> void:
	print("\n--- Test 1: Wallpapers & Tips Selection ---")
	var loader = SystemClass.new()
	loader.start_loading(1, 2)

	_assert(loader.current_wallpaper == SystemClass.OFFICIAL_LOADING_WALLPAPERS[1], "Selected wallpaper 1")
	_assert(loader.current_tip == SystemClass.OFFICIAL_LOADING_TIPS[2], "Selected tip 2 (Biologist)")
	_assert(loader.current_tip.contains("生物学家"), "Tip content matches official text")
	_assert(loader.progress_percent == 0.0, "Initial progress is 0%")
	_assert(loader.is_completed() == false, "Loading not completed initially")

func _test_step_by_step_progress_stream() -> void:
	print("\n--- Test 2: Step-by-Step Progress Stream (25% -> 50% -> 75% -> 100%) ---")
	var loader = SystemClass.new()
	loader.start_loading()

	# Step 1: Property (25%)
	var s1 = loader.advance_loading_step()
	_assert(s1["step"] == SystemClass.STEP_PROPERTY, "Advanced to STEP_PROPERTY")
	_assert(s1["progress"] == 0.25, "Progress is 25%")
	_assert(s1["status_text"].contains("25%"), "Status text displays 25%")

	# Step 2: Terrain (50%)
	var s2 = loader.advance_loading_step()
	_assert(s2["step"] == SystemClass.STEP_TERRAIN, "Advanced to STEP_TERRAIN")
	_assert(s2["progress"] == 0.50, "Progress is 50%")

	# Step 3: Entities (75%)
	var s3 = loader.advance_loading_step()
	_assert(s3["step"] == SystemClass.STEP_ENTITIES, "Advanced to STEP_ENTITIES")
	_assert(s3["progress"] == 0.75, "Progress is 75%")

	# Step 4: UI & Audio (100%)
	var s4 = loader.advance_loading_step()
	_assert(s4["step"] == SystemClass.STEP_UI_AUDIO, "Advanced to STEP_UI_AUDIO")
	_assert(s4["progress"] == 1.0, "Progress reached 100%")

func _test_completion_flow() -> void:
	print("\n--- Test 3: Loading Completion Lifecycle ---")
	var loader = SystemClass.new()
	loader.start_loading()

	# Run all steps to finish
	for i in range(5):
		loader.advance_loading_step()

	_assert(loader.is_completed() == true, "Loading fully completed")
	_assert(loader.progress_percent == 1.0, "Progress is 100%")