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test_morphological_fillters.py
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test_morphological_fillters.py
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# encoding: utf-8
import pytest
import numpy as np
import skimage.morphology
from histolab.filters import morphological_filters as mof
from ...base import IMAGE1_RGB, IMAGE2_RGBA
from ...unitutil import NpArrayMock, function_mock
class DescribeMorphologicalFilters(object):
def it_calls_remove_small_objects_filter_functional(self, request):
img_arr = IMAGE1_RGB
F_remove_small_objects = function_mock(
request,
"histolab.filters.morphological_filters_functional.remove_small_objects",
)
F_remove_small_objects.return_value = img_arr
remove_small_objects = mof.RemoveSmallObjects()
remove_small_objects(img_arr)
F_remove_small_objects.assert_called_once_with(img_arr, 3000, True, 95)
assert type(remove_small_objects(img_arr)) == np.ndarray
def it_calls_remove_small_holes_filter_functional(self, request):
img_arr = IMAGE2_RGBA
F_remove_small_holes = function_mock(
request, "skimage.morphology.remove_small_holes"
)
F_remove_small_holes.return_value = img_arr
remove_small_holes = mof.RemoveSmallHoles()
remove_small_holes(img_arr)
F_remove_small_holes.assert_called_once_with(img_arr, 3000)
assert type(remove_small_holes(img_arr)) == np.ndarray
def it_calls_binary_erosion_filter_functional(self, request):
mask_arr = NpArrayMock.ONES_500X500X4_BOOL
disk = skimage.morphology.disk(5)
F_binary_erosion = function_mock(
request, "scipy.ndimage.morphology.binary_erosion"
)
F_binary_erosion.return_value = mask_arr
binary_erosion = mof.BinaryErosion()
binary_erosion(mask_arr)
np.testing.assert_array_equal(
F_binary_erosion.call_args_list[0][0][0], mask_arr
)
np.testing.assert_array_equal(F_binary_erosion.call_args_list[0][0][1], disk)
assert F_binary_erosion.call_args_list[0][0][2] == 1
assert type(binary_erosion(mask_arr)) == np.ndarray
def but_it_raises_exception_when_call_binary_erosion_non_mask_array(self, request):
array = np.array([(1, 2, 3), (4, 5, 6)])
F_binary_erosion = function_mock(
request, "scipy.ndimage.morphology.binary_erosion"
)
F_binary_erosion.return_value = array
with pytest.raises(ValueError) as err:
binary_erosion = mof.BinaryErosion()
binary_erosion(array)
assert str(err.value) == "Mask must be binary"
def it_calls_binary_dilation_filter_functional(self, request):
mask_arr = NpArrayMock.ONES_500X500X4_BOOL
disk = skimage.morphology.disk(5)
F_binary_dilation = function_mock(
request, "scipy.ndimage.morphology.binary_dilation"
)
F_binary_dilation.return_value = mask_arr
binary_dilation = mof.BinaryDilation()
binary_dilation(mask_arr)
np.testing.assert_array_equal(
F_binary_dilation.call_args_list[0][0][0], mask_arr
)
np.testing.assert_array_equal(F_binary_dilation.call_args_list[0][0][1], disk)
assert F_binary_dilation.call_args_list[0][0][2] == 1
assert type(binary_dilation(mask_arr)) == np.ndarray
def but_it_raises_exception_when_call_binary_dilation_non_mask_array(self, request):
array = np.array([(1, 2, 3), (4, 5, 6)])
F_binary_dilation = function_mock(
request, "scipy.ndimage.morphology.binary_dilation"
)
F_binary_dilation.return_value = array
with pytest.raises(ValueError) as err:
binary_dilation = mof.BinaryDilation()
binary_dilation(array)
assert str(err.value) == "Mask must be binary"
def it_calls_binary_opening_filter_functional(self, request):
mask_arr = NpArrayMock.ONES_500X500X4_BOOL
disk = skimage.morphology.disk(3)
F_binary_opening = function_mock(
request, "scipy.ndimage.morphology.binary_opening"
)
F_binary_opening.return_value = mask_arr
binary_opening = mof.BinaryOpening()
binary_opening(mask_arr)
np.testing.assert_array_equal(
F_binary_opening.call_args_list[0][0][0], mask_arr
)
np.testing.assert_array_equal(F_binary_opening.call_args_list[0][0][1], disk)
assert F_binary_opening.call_args_list[0][0][2] == 1
assert type(binary_opening(mask_arr)) == np.ndarray
def but_it_raises_exception_when_call_binary_opening_non_mask_array(self, request):
array = np.array([(1, 2, 3), (4, 5, 6)])
F_binary_opening = function_mock(
request, "scipy.ndimage.morphology.binary_opening"
)
F_binary_opening.return_value = array
with pytest.raises(ValueError) as err:
binary_opening = mof.BinaryOpening()
binary_opening(array)
assert str(err.value) == "Mask must be binary"
def it_calls_binary_closing_filter_functional(self, request):
mask_arr = NpArrayMock.ONES_500X500X4_BOOL
disk = skimage.morphology.disk(3)
F_binary_closing = function_mock(
request, "scipy.ndimage.morphology.binary_closing"
)
F_binary_closing.return_value = mask_arr
binary_closing = mof.BinaryClosing()
binary_closing(mask_arr)
np.testing.assert_array_equal(
F_binary_closing.call_args_list[0][0][0], mask_arr
)
np.testing.assert_array_equal(F_binary_closing.call_args_list[0][0][1], disk)
assert F_binary_closing.call_args_list[0][0][2] == 1
assert type(binary_closing(mask_arr)) == np.ndarray
def but_it_raises_exception_when_call_binary_closing_non_mask_array(self, request):
array = np.array([(1, 2, 3), (4, 5, 6)])
F_binary_closing = function_mock(
request, "scipy.ndimage.morphology.binary_closing"
)
F_binary_closing.return_value = array
with pytest.raises(ValueError) as err:
binary_closing = mof.BinaryClosing()
binary_closing(array)
assert str(err.value) == "Mask must be binary"