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import pickle
import re
import unittest
import odil
class TestElement(unittest.TestCase):
def _test_sequences(self, odil_contents, python_contents):
if python_contents and isinstance(python_contents[0], bytearray):
self.assertSequenceEqual(
[bytearray([x for x in item]) for item in odil_contents],
python_contents)
else:
self.assertSequenceEqual(list(odil_contents), list(python_contents))
def _test_value(self, element, vr, contents, type_check, accessor):
self.assertTrue(type_check(element))
self.assertEqual(element.empty(), len(contents)==0)
self.assertEqual(element.size(), len(contents))
self.assertEqual(len(element), len(contents))
# Polymorphic test
self._test_sequences(element, contents)
# Typed test
self._test_sequences(accessor(element), contents)
self.assertEqual(element.vr, vr)
if not element.is_int():
with self.assertRaises(odil.Exception):
element.as_int()
if not element.is_real():
with self.assertRaises(odil.Exception):
element.as_real()
if not element.is_string():
with self.assertRaises(odil.Exception):
element.as_string()
if not element.is_data_set():
with self.assertRaises(odil.Exception):
element.as_data_set()
if not element.is_binary():
with self.assertRaises(odil.Exception):
element.as_binary()
def _test_implicit_container(self, empty_content, vr, type_check, accessor):
element = odil.Element(vr)
self._test_value(element, vr, empty_content, type_check, accessor)
def _test_container(self, contents, vr, type_check, accessor):
element = odil.Element(contents, vr)
self._test_value(element, vr, contents, type_check, accessor)
def _test_modify(self, contents, vr, accessor):
# Typed test
element = odil.Element([contents[0]], vr)
if isinstance(contents[0], bytearray):
accessor(element).append(odil.Value.BinaryItem(contents[1]))
else:
accessor(element).append(contents[1])
self._test_sequences(accessor(element), contents[:2])
if isinstance(contents[0], bytearray):
accessor(element)[0] = odil.Value.BinaryItem(contents[1])
else:
accessor(element)[0] = contents[1]
self._test_sequences(accessor(element), [contents[1], contents[1]])
# Polymorphic test
element = odil.Element([contents[0]], vr)
if isinstance(contents[0], bytearray):
element.append(odil.Value.BinaryItem(contents[1]))
else:
element.append(contents[1])
self._test_sequences(element, contents[:2])
if isinstance(contents[0], bytearray):
element[0] = odil.Value.BinaryItem(contents[1])
else:
element[0] = contents[1]
self._test_sequences(element, [contents[1], contents[1]])
def _test_clear(self, contents, vr, type_check):
element = odil.Element(contents, vr)
element.clear()
self.assertTrue(type_check(element))
self.assertTrue(element.empty())
def _test_equality(self, contents_1, contents_2, vr_1, vr_2):
element_1 = odil.Element(contents_1, vr_1)
element_2 = odil.Element(contents_1, vr_1)
element_3 = odil.Element(contents_1, vr_2)
element_4 = odil.Element(contents_2, vr_1)
self.assertTrue(element_1 == element_2)
self.assertFalse(element_1 == element_3)
self.assertFalse(element_1 == element_4)
self.assertFalse(element_1 != element_2)
self.assertTrue(element_1 != element_3)
self.assertTrue(element_1 != element_4)
def _test_pickle(self, contents, vr, accessor):
element = odil.Element(contents, vr)
self.assertSequenceEqual(
accessor(pickle.loads(pickle.dumps(element))), accessor(element))
self.assertEqual(pickle.loads(pickle.dumps(element)).vr, vr)
def _test(
self,
empty_content, contents, other_contents, vr, other_vr,
type_check, accessor):
self._test_implicit_container(empty_content, vr, type_check, accessor)
self._test_container(contents, vr, type_check, accessor)
self._test_modify(contents, vr, accessor)
self._test_clear(contents, vr, type_check)
self._test_equality(contents, other_contents, vr, other_vr)
self._test_pickle(contents, vr, accessor)
def test_implicit_type(self):
for vr in dir(odil.VR):
if re.match(r"^[A-Z]{2}$", vr) is None:
continue
vr = getattr(odil.VR, vr)
if odil.is_int(vr):
self._test_implicit_container(
odil.Value.Integers(), vr,
odil.Element.is_int, odil.Element.as_int)
elif odil.is_real(vr):
self._test_implicit_container(
odil.Value.Reals(), vr,
odil.Element.is_real, odil.Element.as_real)
elif odil.is_string(vr):
self._test_implicit_container(
odil.Value.Strings(), vr,
odil.Element.is_string, odil.Element.as_string)
elif vr == odil.VR.SQ:
self._test_implicit_container(
odil.Value.DataSets(), vr,
odil.Element.is_data_set, odil.Element.as_data_set)
elif odil.is_binary(vr):
self._test_implicit_container(
odil.Value.Binary(), vr,
odil.Element.is_binary, odil.Element.as_binary)
def test_integers(self):
self._test(
odil.Value.Integers(), [1234, 5678, 9012], [3456, 7890],
odil.VR.US, odil.VR.UL,
odil.Element.is_int, odil.Element.as_int)
def test_reals(self):
self._test(
odil.Value.Reals(), [12.34, 56.78, 90.12], [1., 2.],
odil.VR.FD, odil.VR.DS,
odil.Element.is_real, odil.Element.as_real)
def test_strings(self):
self._test(
odil.Value.Strings(), [b"foo", b"bar", b"baz"], [b"plip", b"plop"],
odil.VR.CS, odil.VR.UT,
odil.Element.is_string, odil.Element.as_string)
def test_data_sets(self):
data_set_1 = odil.DataSet(PatientID=["DJ1234"])
data_set_2 = odil.DataSet(EchoTime=[100])
data_set_3 = odil.DataSet(PixelSpacing=[2.3, 4.5])
self._test(
odil.Value.DataSets(),
[data_set_1, data_set_2, data_set_3], [data_set_2, data_set_1],
odil.VR.SQ, odil.VR.UN,
odil.Element.is_data_set, odil.Element.as_data_set)
def test_binary(self):
self._test(
odil.Value.Binary(),
[bytearray([0x01, 0x02]), bytearray([0x03]), bytearray([0x04, 0x05])],
[bytearray([0x04]), bytearray([0x05, 0x06])],
odil.VR.OB, odil.VR.OW,
odil.Element.is_binary, odil.Element.as_binary)
def test_pickle_empty(self):
self.assertEqual(
pickle.loads(pickle.dumps(odil.Element(odil.VR.CS))),
odil.Element(odil.VR.CS))
if __name__ == "__main__":
unittest.main()
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