def test_write_image_array_to_file(tmpdir):
""" pytest test_write_image_array_to_file
:param tmpdir generates a temp directory for a mock data file to be saved
test1: same 3d array can be loaded that was saved
test2: same 2d array can be loaded that was saved
load is assumed to be functional if test reaches here
"""
np_stack, np_array = create_sample_np_arrays()
temp_path = tmpdir.mkdir("sub")
path_of_temp_stack = temp_path.join("stack_test.tiff")
path_of_temp_image = temp_path.join("image_test.tiff")
write_image_array_to_file(np_stack, path_of_temp_stack)
write_image_array_to_file(np_array, path_of_temp_image)
assert (read_images_to_array(str(path_of_temp_stack)) == np_stack).all()
assert (read_images_to_array(str(path_of_temp_image)) == np_array).all()
print 'LOG: test_write_image_array_to_file - passed'
def test_read_images_to_array(tmpdir):
""" pytest read_images_to_array
:param tmpdir generates a temp directory for a mock data file to be saved first
test1: same 3d stack gets returned from load that was saved
test2: same 2d array get returned
test3: empyt file returns correctly an empty array
"""
np_stack, np_array = create_sample_np_arrays()
test_stack_data_pil = Image.fromarray(np_stack)
test_single_image_pil = Image.fromarray(np_array)
temp_path = tmpdir.mkdir("sub")
path_of_temp_stack = temp_path.join("stack_test.tiff")
path_of_temp_image = temp_path.join("image_test.tiff")
test_stack_data_pil.save(str(path_of_temp_stack))
test_single_image_pil.save(str(path_of_temp_image))
#test much match all entries
assert (read_images_to_array(str(path_of_temp_stack)) == np_stack).all()
assert (read_images_to_array(str(path_of_temp_image)) == np_array).all()
assert read_images_to_array('') == []
print 'LOG: test_read_images_to_array - passed'