def test_from_path(self, path_n_bytes_image):
path, bytes_image = path_n_bytes_image
img = images.Img(bytes_image)
assert isinstance(img.surface, cairocffi.ImageSurface)
img2 = img.from_path(path)
assert img == img2
img2.theta = 90.0
assert img != img2
img2.theta = 0.0
assert img == img2
def test_pattern_rotate(self, path_n_bytes_image):
path, bytes_image = path_n_bytes_image
img = images.Img(bytes_image)
img.theta = 90.0
assert img.theta == 90.0
t_matrix = img.pattern.get_matrix().as_tuple()
assert_approx_equal(t_matrix, (0.0, 1.0, -1.0, 0.0))
img.theta = 45.0
t_matrix = img.pattern.get_matrix().as_tuple()
from math import sqrt
s2o2 = sqrt(2) / 2.0
assert_approx_equal(t_matrix, (s2o2, s2o2, -s2o2, s2o2))
del img.theta
assert img.theta == pytest.approx(0.0)
def test_init(self, path_n_bytes_image):
path, bytes_image = path_n_bytes_image
img = images.Img(bytes_image)
assert isinstance(img.surface, cairocffi.ImageSurface)
del img.surface
assert isinstance(img.surface, cairocffi.ImageSurface)
def test_pattern(self, path_n_bytes_image):
path, bytes_image = path_n_bytes_image
img = images.Img(bytes_image)
assert isinstance(img.pattern, cairocffi.SurfacePattern)