Pillow/Tests/test_file_gimpgradient.py

122 lines
2.7 KiB
Python
Raw Normal View History

from .helper import PillowTestCase
from PIL import GimpGradientFile
class TestImage(PillowTestCase):
def test_linear_pos_le_middle(self):
# Arrange
middle = 0.5
pos = 0.25
# Act
ret = GimpGradientFile.linear(middle, pos)
# Assert
self.assertEqual(ret, 0.25)
def test_linear_pos_le_small_middle(self):
# Arrange
middle = 1e-11
pos = 1e-12
# Act
ret = GimpGradientFile.linear(middle, pos)
# Assert
self.assertEqual(ret, 0.0)
def test_linear_pos_gt_middle(self):
# Arrange
middle = 0.5
pos = 0.75
# Act
ret = GimpGradientFile.linear(middle, pos)
# Assert
self.assertEqual(ret, 0.75)
def test_linear_pos_gt_small_middle(self):
# Arrange
middle = 1 - 1e-11
pos = 1 - 1e-12
# Act
ret = GimpGradientFile.linear(middle, pos)
# Assert
self.assertEqual(ret, 1.0)
def test_curved(self):
# Arrange
middle = 0.5
pos = 0.75
# Act
ret = GimpGradientFile.curved(middle, pos)
# Assert
self.assertEqual(ret, 0.75)
2014-08-26 13:21:08 +04:00
def test_sine(self):
# Arrange
middle = 0.5
pos = 0.75
# Act
ret = GimpGradientFile.sine(middle, pos)
# Assert
self.assertEqual(ret, 0.8535533905932737)
def test_sphere_increasing(self):
# Arrange
middle = 0.5
pos = 0.75
# Act
ret = GimpGradientFile.sphere_increasing(middle, pos)
# Assert
self.assertAlmostEqual(ret, 0.9682458365518543)
def test_sphere_decreasing(self):
# Arrange
middle = 0.5
pos = 0.75
# Act
ret = GimpGradientFile.sphere_decreasing(middle, pos)
# Assert
self.assertEqual(ret, 0.3385621722338523)
def test_load_via_imagepalette(self):
# Arrange
from PIL import ImagePalette
test_file = "Tests/images/gimp_gradient.ggr"
# Act
palette = ImagePalette.load(test_file)
# Assert
# load returns raw palette information
self.assertEqual(len(palette[0]), 1024)
self.assertEqual(palette[1], "RGBA")
def test_load_1_3_via_imagepalette(self):
# Arrange
from PIL import ImagePalette
# GIMP 1.3 gradient files contain a name field
test_file = "Tests/images/gimp_gradient_with_name.ggr"
# Act
palette = ImagePalette.load(test_file)
# Assert
# load returns raw palette information
self.assertEqual(len(palette[0]), 1024)
self.assertEqual(palette[1], "RGBA")