extends RefCounted
## Deterministic headless tests for the first-shift tutorial state machine.

const Tutorial := preload("res://src/game/tutorial.gd")

func test_tutorial_advances_only_on_the_expected_action() -> bool:
	var tutorial := Tutorial.new()
	tutorial.start()
	var a := TestUtils.check(tutorial.current()["id"] == "arrive", "starts at arrival")
	var b := TestUtils.check(not tutorial.advance("wheel_opened"), "wrong action is ignored")
	var c := TestUtils.check(tutorial.advance("moved"), "movement advances")
	var d := TestUtils.check(tutorial.current()["id"] == "focus", "moves to focus")
	var e := TestUtils.check(tutorial.advance("cycled"), "target cycling advances")
	var f := TestUtils.check(tutorial.current()["id"] == "wheel", "moves to the action wheel")
	return a and b and c and d and e and f

func test_tutorial_runs_all_beats_and_completes() -> bool:
	var tutorial := Tutorial.new()
	tutorial.start()
	var events := ["moved", "cycled", "wheel_opened", "inspected",
		"polite_direction", "formal_warning", "radio_submitted", "review_opened"]
	var ok := true
	for event in events:
		ok = ok and tutorial.advance(event)
	ok = ok and tutorial.is_complete()
	ok = ok and not tutorial.is_skipped()
	ok = ok and tutorial.progress() == Vector2i(Tutorial.BEATS.size(), Tutorial.BEATS.size())
	return TestUtils.check(ok, "all eight beats complete in order")

func test_tutorial_accepts_body_camera_for_warning() -> bool:
	var tutorial := Tutorial.new()
	tutorial.start()
	for event in ["moved", "cycled", "wheel_opened", "inspected", "polite_direction"]:
		tutorial.advance(event)
	var a := TestUtils.check(tutorial.advance("body_camera"), "body camera satisfies warning")
	var b := TestUtils.check(tutorial.current()["id"] == "radio", "advances to radio")
	return a and b

func test_tutorial_skip_and_restart() -> bool:
	var tutorial := Tutorial.new()
	tutorial.start()
	var a := TestUtils.check(tutorial.advance("moved"), "one beat completed")
	tutorial.skip()
	var b := TestUtils.check(tutorial.is_complete() and tutorial.is_skipped(), "skip completes tutorial")
	var c := TestUtils.check(not tutorial.advance("moved"), "completed tutorial is inert")
	tutorial.restart()
	var d := TestUtils.check(not tutorial.is_complete() and not tutorial.is_skipped(), "restart clears flags")
	var e := TestUtils.check(tutorial.current()["id"] == "arrive", "restart returns to beat one")
	return a and b and c and d and e