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import draw565
import pytest
@pytest.fixture
def draw():
"""Provide a RGB565 drawing surface.
Currently most of the draw565 functions will not work since we haven't
mocked up the display. This limits the testing that we can perform.
"""
d = draw565.Draw565(None)
return d
def test_lighten(draw):
assert draw.lighten(0b00000_000000_00000 ) == 0b00001_000010_00001
assert draw.lighten(0b00000_000000_00000, 0b00001) == 0b00001_000010_00001
assert draw.lighten(0b00000_000000_00000, 0b00100) == 0b00100_001000_00100
assert draw.lighten(0b10000_100000_10000, 0b10000) == 0b11111_111111_11111
assert draw.lighten(0b11110_111100_11110, 0b00001) == 0b11111_111110_11111
assert draw.lighten(0b11110_111101_11110, 0b00001) == 0b11111_111111_11111
assert draw.lighten(0b11111_111111_11111, 0b00001) == 0b11111_111111_11111
assert draw.lighten(0b10000_010000_01000, 0b10000) == 0b11111_110000_11000
assert draw.lighten(0b01000_100000_01000, 0b10000) == 0b11000_111111_11000
assert draw.lighten(0b01000_010000_10000, 0b10000) == 0b11000_110000_11111
def test_darken(draw):
assert draw.darken(0b00001_000010_00001, 0b00001) == 0b00000_000000_00000
assert draw.darken(0b00010_000100_00010 ) == 0b00001_000010_00001
assert draw.darken(0b00010_000100_00010, 0b00001) == 0b00001_000010_00001
assert draw.darken(0b10000_010000_00100, 0b00001) == 0b01111_001110_00011
assert draw.darken(0b00000_000000_00000, 0b00001) == 0b00000_000000_00000
assert draw.darken(0b00001_000001_00001, 0b00001) == 0b00000_000000_00000
assert draw.darken(0b10000_100000_10000, 0b10001) == 0b00000_000000_00000
assert draw.darken(0b10000_100010_10010, 0b10001) == 0b00000_000000_00001
assert draw.darken(0b10000_100100_10010, 0b10001) == 0b00000_000010_00001
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