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import os
import mapnik
def test_color_init():
c = mapnik.Color(12, 128, 255)
assert c.r == 12
assert c.g == 128
assert c.b == 255
assert c.a == 255
assert not c.get_premultiplied()
c = mapnik.Color(16, 32, 64, 128)
assert c.r == 16
assert c.g == 32
assert c.b == 64
assert c.a == 128
assert not c.get_premultiplied()
c = mapnik.Color(16, 32, 64, 128, True)
assert c.r == 16
assert c.g == 32
assert c.b == 64
assert c.a == 128
assert c.get_premultiplied()
c = mapnik.Color('rgba(16,32,64,0.5)')
assert c.r == 16
assert c.g == 32
assert c.b == 64
assert c.a == 128
assert not c.get_premultiplied()
c = mapnik.Color('rgba(16,32,64,0.5)', True)
assert c.r == 16
assert c.g == 32
assert c.b == 64
assert c.a == 128
assert c.get_premultiplied()
hex_str = '#10204080'
c = mapnik.Color(hex_str)
assert c.r == 16
assert c.g == 32
assert c.b == 64
assert c.a == 128
assert hex_str == c.to_hex_string()
assert not c.get_premultiplied()
c = mapnik.Color(hex_str, True)
assert c.r == 16
assert c.g == 32
assert c.b == 64
assert c.a == 128
assert hex_str == c.to_hex_string()
assert c.get_premultiplied()
rgba_int = 2151686160
c = mapnik.Color(rgba_int)
assert c.r == 16
assert c.g == 32
assert c.b == 64
assert c.a == 128
assert rgba_int == c.packed()
assert not c.get_premultiplied()
c = mapnik.Color(rgba_int, True)
assert c.r == 16
assert c.g == 32
assert c.b == 64
assert c.a == 128
assert rgba_int == c.packed()
assert c.get_premultiplied()
def test_color_properties():
c = mapnik.Color(16, 32, 64, 128)
assert c.r == 16
assert c.g == 32
assert c.b == 64
assert c.a == 128
c.r = 17
assert c.r == 17
c.g = 33
assert c.g == 33
c.b = 65
assert c.b == 65
c.a = 128
assert c.a == 128
def test_color_premultiply():
c = mapnik.Color(16, 33, 255, 128)
assert c.premultiply()
assert c.r == 8
assert c.g == 17
assert c.b == 128
assert c.a == 128
# Repeating it again should do nothing
assert not c.premultiply()
assert c.r == 8
assert c.g == 17
assert c.b == 128
assert c.a == 128
c.demultiply()
c.demultiply()
# This will not return the same values as before but we expect that
assert c.r == 15
assert c.g == 33
assert c.b == 255
assert c.a == 128
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