def test6get_match_element_match_context_input_validation(self):
"""Check if an exception is raised, when other classes than MatchContext are used in get_match_element."""
model_element = VariableByteDataModelElement(self.id_, self.alphabet)
data = b"abcdefghijklmnopqrstuvwxyz.!?"
model_element.get_match_element(self.path, DummyMatchContext(data))
model_element.get_match_element(self.path, MatchContext(data))
self.assertRaises(AttributeError, model_element.get_match_element,
self.path, MatchElement(None, data, None, None))
self.assertRaises(AttributeError, model_element.get_match_element,
self.path, data)
self.assertRaises(AttributeError, model_element.get_match_element,
self.path, data.decode())
self.assertRaises(AttributeError, model_element.get_match_element,
self.path, 123)
self.assertRaises(AttributeError, model_element.get_match_element,
self.path, 123.22)
self.assertRaises(AttributeError, model_element.get_match_element,
self.path, True)
self.assertRaises(AttributeError, model_element.get_match_element,
self.path, None)
self.assertRaises(AttributeError, model_element.get_match_element,
self.path, [])
self.assertRaises(AttributeError, model_element.get_match_element,
self.path, {"key": MatchContext(data)})
self.assertRaises(AttributeError, model_element.get_match_element,
self.path, set())
self.assertRaises(AttributeError, model_element.get_match_element,
self.path, ())
self.assertRaises(AttributeError, model_element.get_match_element,
self.path, model_element)
def test4get_match_element_no_match(self):
"""Parse not matching substring from MatchContext and check if the MatchContext was not changed."""
data = b""
match_context = DummyMatchContext(data)
variable_byte_dme = VariableByteDataModelElement(
self.id_, self.alphabet)
match_element = variable_byte_dme.get_match_element(
self.path, match_context)
self.compare_no_match_results(data, match_element, match_context)
data = b"!abcdefghijklm nopqrstuvwxyz.!?"
match_context = DummyMatchContext(data)
variable_byte_dme = VariableByteDataModelElement(
self.id_, self.alphabet)
match_element = variable_byte_dme.get_match_element(
self.path, match_context)
self.compare_no_match_results(data, match_element, match_context)
def test3match_data_empty(self):
"""The match_context is empty and no match_element is expected."""
match_context = MatchContext(b'')
variable_byte_data_model_element = VariableByteDataModelElement(
'variable', self.alphabet)
match_element = variable_byte_data_model_element.get_match_element(
'match', match_context)
self.assertEqual(match_element, None)
self.assertEqual(match_context.match_data, b'')
def test2match_data_not_starting_with_char_from_alphabet(self):
"""The match_context contains characters of the specified alphabet, but does not start with one."""
match_context = MatchContext(b'.this sentence started with a dot.')
variable_byte_data_model_element = VariableByteDataModelElement(
'variable', self.alphabet)
match_element = variable_byte_data_model_element.get_match_element(
'match', match_context)
self.assertEqual(match_element, None)
self.assertEqual(match_context.match_data,
b'.this sentence started with a dot.')
def test1match_data_in_alphabet(self):
"""The match_context contains only characters of the specified alphabet."""
match_context = MatchContext(
b'this is a normal sentence in lower case.')
variable_byte_data_model_element = VariableByteDataModelElement(
'variable', self.alphabet)
match_element = variable_byte_data_model_element.get_match_element(
'match', match_context)
self.assertEqual(match_element.get_match_string(),
b'this is a normal sentence in lower case')
self.assertEqual(match_context.match_data, b'.')
def test3get_match_element_valid_match(self):
"""Parse matching substring from MatchContext and check if the MatchContext was updated with all characters."""
data = b"abcdefghijklm nopqrstuvwxyz.!?"
value = b"abcdefghijklm nopqrstuvwxyz"
match_context = DummyMatchContext(data)
variable_byte_dme = VariableByteDataModelElement(
self.id_, self.alphabet)
match_element = variable_byte_dme.get_match_element(
self.path, match_context)
self.compare_match_results(data, match_element, match_context,
self.id_, self.path, value, value, None)