extends "res://addons/gut/test.gd"


func test_format_zero_is_copper():
	assert_eq(Currency.format(0), "0c")


func test_format_sub_silver():
	assert_eq(Currency.format(8), "8c")
	assert_eq(Currency.format(47), "47c")


func test_format_exact_denominations():
	assert_eq(Currency.format(100), "1s")
	assert_eq(Currency.format(10000), "1g")


func test_format_full_ladder():
	assert_eq(Currency.format(143), "1s 43c")
	assert_eq(Currency.format(347), "3s 47c")
	assert_eq(Currency.format(124008), "12g 40s 8c")


func test_format_skips_empty_middle_and_tail():
	assert_eq(Currency.format(10008), "1g 8c", "an empty silver place is skipped, not zero-padded")
	assert_eq(Currency.format(124000), "12g 40s", "an empty copper place is skipped")


func test_value_of_each_denomination():
	assert_eq(Currency.value("copper"), 1)
	assert_eq(Currency.value("silver"), 100)
	assert_eq(Currency.value("gold"), 10000)


func test_non_currency_id_is_not_money():
	assert_false(Currency.is_currency("worn_shortsword"))
	assert_eq(Currency.value("worn_shortsword"), 0)


func test_currency_ids_are_currency():
	for id in ["copper", "silver", "gold"]:
		assert_true(Currency.is_currency(id), "%s is money" % id)