def test_implicit_little(self):
"""Test encoding using implicit VR little endian."""
elem = DataElement(0x00100010, 'PN', 'CITIZEN^Snips')
bytestring = encode_element(elem, True, True)
assert bytestring == (b'\x10\x00\x10\x00\x0e\x00\x00\x00\x43'
b'\x49\x54\x49\x5a\x45\x4e\x5e\x53\x6e'
b'\x69\x70\x73\x20')
def test_explicit_big(self):
"""Test encoding using explicit VR big endian."""
elem = DataElement(0x00100010, 'PN', 'CITIZEN^Snips')
bytestring = encode_element(elem, False, False)
assert bytestring == (b'\x00\x10\x00\x10\x50\x4e\x00\x0e\x43'
b'\x49\x54\x49\x5a\x45\x4e\x5e\x53\x6e'
b'\x69\x70\x73\x20')
def _set_command_group_length(self):
"""Reset the Command Group Length element value.
Once the self.command_set Dataset has been built and filled with
values, this should be called to set the CommandGroupLength element
value correctly.
"""
# Remove CommandGroupLength to stop it messing up the length calc
del self.command_set.CommandGroupLength
length = 0
for elem in self.command_set:
# The Command Set is always Implicit VR Little Endian
length += len(encode_element(elem, True, True))
self.command_set.CommandGroupLength = length
def _set_command_group_length(self):
"""
Once the self.command_set Dataset has been built and filled with values,
this should be called to set the CommandGroupLength element value
correctly.
"""
length = 0
# Remove CommandGroupLength from dataset to prevent it from messing
# with our length calculation.
# We have to use the tag value due to a bug in pydicom 1.0.0
del self.command_set[0x00000000]
for ii in list(self.command_set.values()):
# encode_element(elem, is_implicit_VR, is_little_endian)
length += len(encode_element(ii, True, True))
# Add the CommandGroupLength element back to the dataset with the
# correct value
self.command_set.CommandGroupLength = length
