local function test(msg, f)
	local success, error = pcall(f)
	if success then
		print(msg .. "\t\t[OK]")
	else
		print(msg .. "\t\t[FAIL]")
		print(error)
	end
end


local ecs = require 'ecs'


local Component = ecs.Component


test("factories work as expected", function()
	local factory = Component.newFactory("health", { percent=100 })
	local comp1 = factory()
	assert(comp1.__type == "health", "bad component type for comp1")
	assert(comp1.percent == 100, "bat percent for comp1")

	local comp2 = factory{ percent=50 }
	assert(comp2.__type == "health", "bad component type for comp2")
	assert(comp2.percent == 50, "bad percent for comp2")

	local success = pcall(function()
		comp2.dne = 5
	end)
	assert(not success, "incorrectly succeeded in setting comp2.dne")

	local success = pcall(function()
		local comp3 = factory{ percent = 44, something = 2 }
	end)
	assert(not success, "incorrectly succeeded in creating comp3")
end)


test("components serialize as expected", function()
	local position = Component.newFactory("position", { x=0, y=0, z=0 })
	local comp = position{x=10, y=15, z=10}
	local str = tostring(comp)
	local tbl = (loadstring("return " .. str))()
	assert(tbl.__type == "position", "bad type")
	assert(tbl.x == 10, "bad x")
	assert(tbl.y == 15, "bad y")
	assert(tbl.z == 10, "bad z")
end)


test("components serialize successfully with subcomponents", function()
	local position = Component.newFactory("position", { x=0, y=0, z=0 })
	local player = Component.newFactory("player", { name="", position={} })

	local p = player{ name="hannah", position=position{x=10, y=9, z=8} }
	local tbl = (loadstring("return " .. tostring(p)))()
	assert(tbl.__type == "player")
	assert(tbl.name == "hannah")
	assert(tbl.position.__type == "position")
	assert(tbl.position.x == 10)
	assert(tbl.position.y == 9)
	assert(tbl.position.z == 8)
end)