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import pickle
import unittest
import odil
class TestDataSet(unittest.TestCase):
def test_empty_constructor(self):
data_set = odil.DataSet()
self.assertTrue(data_set.empty())
self.assertEqual(data_set.size(), 0)
self.assertEqual(len(data_set), 0)
self.assertEqual(len(data_set.get_transfer_syntax()), 0)
def test_transfer_syntax_constructor(self):
data_set = odil.DataSet(odil.registry.ExplicitVRLittleEndian)
self.assertEqual(
data_set.get_transfer_syntax().encode(),
odil.registry.ExplicitVRLittleEndian)
def test_kwargs_constructor(self):
data_set = odil.DataSet(
odil.registry.ImplicitVRLittleEndian,
PatientName=["Doe^John"], PatientWeight=[70],
ReferencedStudySequence=[
odil.DataSet(StudyInstanceUID=["1.2.3"])],
PixelData=[odil.Value.BinaryItem([1,2,3])])
self.assertEqual(data_set.size(), 4)
self._test_element_value(
data_set, "PatientName", [b"Doe^John"], odil.VR.PN,
odil.DataSet.is_string, odil.DataSet.as_string)
self._test_element_value(
data_set, "PatientWeight", [70], odil.VR.DS,
odil.DataSet.is_int, odil.DataSet.as_int)
self._test_element_value(
data_set, "ReferencedStudySequence", [
odil.DataSet(StudyInstanceUID=["1.2.3"])
], odil.VR.SQ,
odil.DataSet.is_data_set, odil.DataSet.as_data_set)
self._test_element_value(
data_set, "PixelData", [odil.Value.BinaryItem([1,2,3])], odil.VR.OW,
odil.DataSet.is_binary, odil.DataSet.as_binary)
with self.assertRaises(odil.Exception):
odil.DataSet(FooBar=["foo"])
def test_transfer_syntax(self):
data_set = odil.DataSet()
data_set.set_transfer_syntax(odil.registry.ExplicitVRLittleEndian)
self.assertEqual(
data_set.get_transfer_syntax().encode(),
odil.registry.ExplicitVRLittleEndian)
def test_empty_element_tag(self):
tag = odil.registry.PatientName
data_set = odil.DataSet()
data_set.add(tag)
self.assertFalse(data_set.empty())
self.assertEqual(data_set.size(), 1)
self.assertEqual(len(data_set), 1)
self.assertEqual(data_set.get_vr(tag), odil.VR.PN)
self.assertTrue(data_set.empty(tag))
self.assertEqual(data_set.size(tag), 0)
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_element_value(
self, data_set, tag, contents, vr, type_check, accessor):
self.assertTrue(data_set.has(tag))
self.assertEqual(data_set.empty(tag), len(contents)==0)
self.assertEqual(data_set.size(tag), len(contents))
self.assertTrue(type_check(data_set, tag))
self.assertEqual(data_set[tag].vr, vr)
self._test_sequences(accessor(data_set, tag), contents)
if not data_set.is_int(tag):
with self.assertRaises(odil.Exception):
data_set.as_int(tag)
if not data_set.is_real(tag):
with self.assertRaises(odil.Exception):
data_set.as_real(tag)
if not data_set.is_string(tag):
with self.assertRaises(odil.Exception):
data_set.as_string(tag)
if not data_set.is_data_set(tag):
with self.assertRaises(odil.Exception):
data_set.as_data_set(tag)
if not data_set.is_binary(tag):
with self.assertRaises(odil.Exception):
data_set.as_binary(tag)
def _test_implicit_container(
self, tag, empty_content, vr, type_check, accessor):
# Implicit empty content
data_set = odil.DataSet()
data_set.add(tag)
self._test_element_value(
data_set, tag, empty_content, vr, type_check, accessor)
# Explicit empty content
data_set = odil.DataSet()
data_set.add(tag, empty_content)
self._test_element_value(
data_set, tag, empty_content, vr, type_check, accessor)
def _test_container_no_vr(self, tag, contents, vr, type_check, accessor):
data_set = odil.DataSet()
data_set.add(tag, contents)
self._test_element_value(
data_set, tag, contents, vr, type_check, accessor)
def _test_container_vr(self, tag, contents, vr, type_check, accessor):
data_set = odil.DataSet()
data_set.add(tag, contents, vr)
self._test_element_value(
data_set, tag, contents, vr, type_check, accessor)
def _test_modify(self, tag, contents, accessor):
# Typed test
data_set = odil.DataSet()
data_set.add(tag, [contents[0]])
if isinstance(contents[0], bytearray):
accessor(data_set, tag).append(
odil.Value.BinaryItem(contents[1]))
else:
accessor(data_set, tag).append(contents[1])
self._test_sequences(accessor(data_set, tag), contents)
# Polymorphic test
data_set = odil.DataSet()
data_set.add(tag, [contents[0]])
if isinstance(contents[0], bytearray):
data_set[tag].append(odil.Value.BinaryItem(contents[1]))
else:
data_set[tag].append(contents[1])
self._test_sequences(data_set[tag], contents)
def _test_clear(self, tag, contents, type_check):
data_set = odil.DataSet()
data_set.add(tag, contents)
data_set.clear(tag)
self.assertTrue(type_check(data_set, tag))
self.assertTrue(data_set.empty(tag))
def _test_item(self, tag, contents, type_check, accessor):
data_set = odil.DataSet()
data_set.add(tag, contents)
self._test_sequences(accessor(data_set[tag]), contents)
data_set[tag] = odil.Element(contents[:1], data_set.get_vr(tag))
self._test_sequences(accessor(data_set[tag]), contents[:1])
def _test_element(
self, tag, empty_content, contents, vr,
data_set_type_check, data_set_accessor,
element_type_check, element_accessor):
self._test_implicit_container(
tag, empty_content, vr, data_set_type_check, data_set_accessor)
self._test_container_no_vr(
tag, contents, vr, data_set_type_check, data_set_accessor)
self._test_container_vr(
tag, contents, vr, data_set_type_check, data_set_accessor)
self._test_modify(tag, contents, data_set_accessor)
self._test_clear(tag, contents, data_set_type_check)
self._test_item(tag, contents, element_type_check, element_accessor)
def test_int(self):
self._test_element(
odil.registry.Rows, odil.Value.Integers(), [1234, 5678], odil.VR.US,
odil.DataSet.is_int, odil.DataSet.as_int,
odil.Element.is_int, odil.Element.as_int)
def test_real(self):
self._test_element(
odil.registry.B1rms, odil.Value.Reals(),
[12.34, 56.78], odil.VR.FL,
odil.DataSet.is_real, odil.DataSet.as_real,
odil.Element.is_real, odil.Element.as_real)
def test_real_string(self):
self._test_element(
odil.registry.FieldOfViewOrigin, odil.Value.Reals(),
[12.34, 56.78], odil.VR.DS,
odil.DataSet.is_real, odil.DataSet.as_real,
odil.Element.is_real, odil.Element.as_real)
def test_string(self):
self._test_element(
odil.registry.PatientID, odil.Value.Strings(), [b"foo", b"bar"],
odil.VR.LO,
odil.DataSet.is_string, odil.DataSet.as_string,
odil.Element.is_string, odil.Element.as_string)
def test_data_set(self):
data_set_1 = odil.DataSet()
data_set_1.add("PatientID", ["DJ1234"])
data_set_2 = odil.DataSet()
data_set_2.add("EchoTime", [100])
self._test_element(
odil.registry.ReferencedStudySequence, odil.Value.DataSets(),
[data_set_1, data_set_2], odil.VR.SQ,
odil.DataSet.is_data_set, odil.DataSet.as_data_set,
odil.Element.is_data_set, odil.Element.as_data_set)
def test_binary(self):
self._test_element(
odil.registry.BadPixelImage, odil.Value.Binary(),
[bytearray([0x01, 0x02]), bytearray([0x03])], odil.VR.OB,
odil.DataSet.is_binary, odil.DataSet.as_binary,
odil.Element.is_binary, odil.Element.as_binary)
def test_getitem(self):
data_set = odil.DataSet()
data_set.add("PatientName", ["Doe^John"])
self.assertSequenceEqual(
data_set["PatientName"].as_string(), [b"Doe^John"])
self.assertRaises(Exception, lambda x: data_set["PatientID"])
def test_delitem(self):
data_set = odil.DataSet()
data_set.add("PatientName", ["Doe^John"])
del data_set[odil.registry.PatientName]
self.assertTrue(data_set.empty())
data_set = odil.DataSet()
data_set.add("PatientName", ["Doe^John"])
del data_set["PatientName"]
self.assertTrue(data_set.empty())
def test_contains(self):
data_set = odil.DataSet()
data_set.add("PatientName", ["Doe^John"])
self.assertTrue("PatientName" in data_set)
self.assertTrue(odil.registry.PatientName in data_set)
self.assertTrue("PatientID" not in data_set)
self.assertTrue(odil.registry.PatientID not in data_set)
def test_get(self):
data_set = odil.DataSet()
data_set.add("PatientName", ["Doe^John"])
self.assertSequenceEqual(
data_set.get(odil.registry.PatientName).as_string(), [b"Doe^John"])
self.assertSequenceEqual(
data_set.get("PatientName").as_string(), [b"Doe^John"])
self.assertEqual(data_set.get(odil.registry.PatientID), None)
self.assertEqual(data_set.get("PatientID"), None)
self.assertEqual(data_set.get(odil.registry.PatientID, 123), 123)
self.assertEqual(data_set.get("PatientID", 123), 123)
def test_iter(self):
data_set = odil.DataSet()
data_set.add("PatientName", ["Doe^John"])
data_set.add("PatientID", ["DJ123"])
self.assertEqual(
[x.get_name() for x in data_set],
["PatientName", "PatientID"])
def test_keys(self):
data_set = odil.DataSet()
data_set.add("PatientName", ["Doe^John"])
data_set.add("PatientID", ["DJ123"])
self.assertEqual(
[x.get_name() for x in data_set.keys()],
["PatientName", "PatientID"])
self.assertEqual(
[x.get_name() for x in list(data_set)],
["PatientName", "PatientID"])
self.assertEqual(
[x.get_name() for x in data_set],
["PatientName", "PatientID"])
def test_values(self):
data_set = odil.DataSet()
data_set.add("PatientName", ["Doe^John"])
data_set.add("PatientID", ["DJ123"])
self.assertEqual(
[
[item for item in element.as_string()]
for element in data_set.values()],
[[b"Doe^John"], [b"DJ123"]])
def test_items(self):
data_set = odil.DataSet()
data_set.add("PatientName", ["Doe^John"])
data_set.add("PatientID", ["DJ123"])
self.assertSequenceEqual(
[
[tag.get_name(), [item for item in element.as_string()]]
for tag, element in data_set.items()],
[["PatientName", [b"Doe^John"]], ["PatientID", [b"DJ123"]]])
def test_update(self):
data_set = odil.DataSet()
data_set.add("PatientName", ["Doe^John"])
data_set.add("PatientSex", ["M"])
other = odil.DataSet()
data_set.add("PatientName", ["Bloggs^Joe"])
other.add("PatientID", ["BJ123"])
other.add("IssuerOfPatientID", ["Hospital"])
data_set.update(other)
self.assertSequenceEqual(
[
[tag.get_name(), [item for item in element.as_string()]]
for tag, element in data_set.items()],
[
["PatientName", [b"Bloggs^Joe"]], ["PatientID", [b"BJ123"]],
["IssuerOfPatientID", [b"Hospital"]], ["PatientSex", [b"M"]]])
def test_pickle(self):
data_set = odil.DataSet()
data_set.add("PatientName", ["Doe^John"])
data_set.add("PatientID", ["DJ123"])
self.assertEqual(pickle.loads(pickle.dumps(data_set)), data_set)
if __name__ == "__main__":
unittest.main()
|
