Pillow/Tests/test_file_gimpgradient.py
Jon Dufresne 7da17ad41e Improve pytest configuration to allow specific tests as CLI args
The previous test configuration made it difficult to run a single test
with the pytest CLI. There were two major issues:

- The Tests directory was not a package. It now includes a __init__.py
  file and imports from other tests modules are done with relative
  imports.

- setup.cfg always specified the Tests directory. So even if a specific
  test were specified as a CLI arg, this configuration would also always
  include all tests. This configuration has been removed to allow
  specifying a single test on the command line.

Contributors can now run specific tests with a single command such as:

  $ tox -e py37 -- Tests/test_file_pdf.py::TestFilePdf.test_rgb

This makes it easy and faster to iterate on a single test failure and is
very familiar to those that have previously used tox and pytest.

When running tox or pytest with no arguments, they still discover and
runs all tests in the Tests directory.
2019-01-13 09:00:12 -08:00

126 lines
2.7 KiB
Python

from .helper import unittest, 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)
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")
if __name__ == '__main__':
unittest.main()