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_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_sine(self):
# Arrange
middle = 0.5
pos = 0.75
# Act
ret = GimpGradientFile.sine(middle, pos)
# Assert
self.assertEqual(ret, 0.8535533905932737)
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_curved(self):
# Arrange
middle = 0.5
pos = 0.75
# Act
ret = GimpGradientFile.curved(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)