def testImplVRcomma(self):
"""util.fix_separator: Able to replace comma in Implicit VR dataset.."""
fixer.fix_separator(b",", for_VRs=["DS", "IS"], process_unknown_VRs=False)
ds = filereader.read_dataset(self.bytesio, is_little_endian=True, is_implicit_VR=True)
expected = [valuerep.DSfloat(x) for x in ["2", "4", "8", "16"]]
got = ds.ROIContourSequence[0].ContourSequence[0].ContourData
config.reset_data_element_callback()
msg = "Expected {0}, got {1}".format(expected, got)
self.assertEqual(expected, got, msg)
def testImplVRcomma(self):
"""util.fix_separator:
Able to replace comma in Implicit VR dataset.."""
fixer.fix_separator(b",", for_VRs=["DS", "IS"],
process_unknown_VRs=False)
ds = filereader.read_dataset(self.bytesio, is_little_endian=True,
is_implicit_VR=True)
expected = [valuerep.DSfloat(x) for x in ["2", "4", "8", "16"]]
got = ds.ROIContourSequence[0].ContourSequence[0].ContourData
config.reset_data_element_callback()
assert expected == got
def test_null_value_for_fixed_vr(self):
# Wipe first Contour Data, mark as length 0
null_ds_bytes = self.ds_bytes.replace(b"\x08\x00\x00\x00",
b"\x00\x00\x00\x00")
contour_data = b"\x32\x2c\x34\x2c\x38\x2c\x31\x36"
null_ds_bytes = null_ds_bytes.replace(contour_data, b"")
fixer.fix_separator(b",",
for_VRs=["DS", "IS"],
process_unknown_VRs=False)
ds = filereader.read_dataset(BytesIO(null_ds_bytes),
is_little_endian=True,
is_implicit_VR=True)
assert ds.ROIContourSequence[0].ContourSequence[0].ContourData is None
def testImplVRcomma(self):
"""util.fix_separator:
Able to replace comma in Implicit VR dataset.."""
fixer.fix_separator(b",", for_VRs=["DS", "IS"],
process_unknown_VRs=False)
ds = filereader.read_dataset(self.bytesio, is_little_endian=True,
is_implicit_VR=True)
got = ds.ROIContourSequence[0].ContourSequence[0].ContourData
config.reset_data_element_callback()
expected = [2., 4., 8., 16.]
if have_numpy and config.use_DS_numpy:
assert numpy.allclose(expected, got)
else:
assert expected == got
def test_space_delimiter(self):
# Change "32\64\128\196" to "32 64 128 196", keeping the trailing space
existing = b"\x33\x32\x5c\x36\x34\x5c\x31\x32\x38\x5c\x31\x39\x36\x20"
spaced = b"\x33\x32\x20\x36\x34\x20\x31\x32\x38\x20\x31\x39\x36\x20"
space_ds_bytes = self.ds_bytes.replace(existing, spaced)
fixer.fix_separator(b" ",
for_VRs=["DS", "IS"],
process_unknown_VRs=False)
ds = filereader.read_dataset(BytesIO(space_ds_bytes),
is_little_endian=True,
is_implicit_VR=True)
got = ds.ROIContourSequence[0].ContourSequence[1].ContourData
expected = [32., 64., 128., 196.]
if have_numpy and config.use_DS_numpy:
assert numpy.allclose(expected, got)
else:
assert expected == got
def test_process_unknown_vr(self):
bad_vr_bytes = self.ds_bytes
# tag (0900, 0010), length 4, value "1,2"
bad_vr_bytes += (b"\x00\x09\x10\x00"
b"\x04\x00\x00\x00"
b"\x31\x2c\x32\x20")
fixer.fix_separator(b",",
for_VRs=["DS", "IS"],
process_unknown_VRs=True)
ds = filereader.read_dataset(BytesIO(bad_vr_bytes),
is_little_endian=True,
is_implicit_VR=True)
got = ds.get((0x0900, 0x0010))
assert got.value == b'1\\2 '
# with process_unknown_VRs=False, unknown VR separator is not replaced
fixer.fix_separator(b",",
for_VRs=["DS", "IS"],
process_unknown_VRs=False)
ds = filereader.read_dataset(BytesIO(bad_vr_bytes),
is_little_endian=True,
is_implicit_VR=True)
got = ds.get((0x0900, 0x0010))
assert got.value == b'1,2 '