# Tests walkable collider ancestry for res://scripts/ground_pick.gd.
# Full ray / viewport pick flow stays manual (see README).
extends GdUnitTestSuite

const GroundPickScript := preload("res://scripts/ground_pick.gd")


func test_collider_is_walkable_true_when_ancestor_in_walkable_group() -> void:
	var gp := Node3D.new()
	gp.set_script(GroundPickScript)
	auto_free(gp)
	add_child(gp)
	var floor_root := StaticBody3D.new()
	floor_root.add_to_group("walkable")
	var mesh_child := MeshInstance3D.new()
	floor_root.add_child(mesh_child)
	gp.add_child(floor_root)
	var walkable := bool(gp.call("_collider_is_walkable", mesh_child))
	assert_that(walkable).is_true()


func test_collider_is_walkable_false_without_walkable_group() -> void:
	var gp := Node3D.new()
	gp.set_script(GroundPickScript)
	auto_free(gp)
	add_child(gp)
	var body := StaticBody3D.new()
	gp.add_child(body)
	var ok := bool(gp.call("_collider_is_walkable", body))
	assert_that(ok).is_false()


func test_collider_is_occluder_true_when_ancestor_in_occluder_group() -> void:
	var gp := Node3D.new()
	gp.set_script(GroundPickScript)
	auto_free(gp)
	add_child(gp)
	var obstacle := StaticBody3D.new()
	obstacle.add_to_group("occluder")
	var mesh_child := MeshInstance3D.new()
	obstacle.add_child(mesh_child)
	gp.add_child(obstacle)
	var is_occluder := bool(gp.call("_collider_is_occluder", mesh_child))
	assert_that(is_occluder).is_true()


func test_collider_is_occluder_false_without_occluder_group() -> void:
	var gp := Node3D.new()
	gp.set_script(GroundPickScript)
	auto_free(gp)
	add_child(gp)
	var body := StaticBody3D.new()
	gp.add_child(body)
	var is_occluder := bool(gp.call("_collider_is_occluder", body))
	assert_that(is_occluder).is_false()


func test_collider_is_occluder_false_for_walkable_only_ancestor() -> void:
	var gp := Node3D.new()
	gp.set_script(GroundPickScript)
	auto_free(gp)
	add_child(gp)
	var floor_root := StaticBody3D.new()
	floor_root.add_to_group("walkable")
	var mesh_child := MeshInstance3D.new()
	floor_root.add_child(mesh_child)
	gp.add_child(floor_root)
	var is_occluder := bool(gp.call("_collider_is_occluder", mesh_child))
	assert_that(is_occluder).is_false()