"""Test color functions."""
from colour import Color

from map_machine.color import get_gradient_color, is_bright
from map_machine.util import MinMax

__author__ = "Sergey Vartanov"
__email__ = "me@enzet.ru"


def test_is_bright() -> None:
    """Test detecting color brightness."""
    assert is_bright(Color("white"))
    assert is_bright(Color("yellow"))
    assert not is_bright(Color("brown"))
    assert not is_bright(Color("black"))


def test_gradient() -> None:
    """Test color picking from gradient."""
    color: Color = get_gradient_color(
        0.5, MinMax(0, 1), [Color("black"), Color("white")]
    )
    assert color == Color("#7F7F7F")