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# vim: set et sw=4 sts=4 fileencoding=utf-8:
#
# The colorzero color library
#
# Copyright (c) 2018 Dave Jones <dave@waveform.org.uk>
#
# SPDX-License-Identifier: BSD-3-Clause
"Tests for the colorzero.easings module"
from __future__ import (
unicode_literals,
print_function,
division,
absolute_import,
)
import pytest
from colorzero.easings import *
def test_linear():
assert list(linear(2)) == [0, 1]
assert list(linear(5)) == [0, 1/4, 1/2, 3/4, 1]
def test_ease_in():
assert list(ease_in(2)) == [0, 1]
assert list(ease_in(5)) == [0, 1/16, 4/16, 9/16, 1]
def test_ease_out():
assert list(ease_out(2)) == [0, 1]
assert list(ease_out(5)) == [0, 7/16, 12/16, 15/16, 1]
def test_ease_in_out():
assert list(ease_in_out(2)) == [0, 1]
assert list(ease_in_out(5)) == [0, 2/16, 8/16, 14/16, 1]
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