def test_scanner_none():
"""
Ensure overwriting the scanner property works as expected when given
proper input as None.
"""
generator = Generator()
generator.scanner = None
assert generator.scanner is None, 'Invalid scanner set/retrieved'
def test_encoding_direct():
"""
Ensure overwriting the encoding property works as expected when given
proper input as the string 'direct'.
"""
generator = Generator()
generator.encoding = 'direct'
assert generator.encoding == 'direct', 'Invalid encoding set/retrieved'
def test_filename_valid():
"""
Ensure overwriting the filename property works as expected when given
proper input as a non empty string.
"""
generator = Generator()
generator.filename = 'foobar'
assert generator.filename == 'foobar', 'Invalid filename set/retrieved'
def test_translate_not_implemented():
"""
Ensure a NotImplementedError is raised if generation to source language
is attempted with the base Generator.
"""
generator = Generator()
generator.scanner = RegularGrammar('test', {'foo': ['b', 'a', 'r']})
generator.parser = ContextFreeGrammar('test', {'S': [['a']]}, 'S')
generator.generate()
def test_parser_valid():
"""
Ensure overwriting the paser property works as expected when given
proper input as a ContextFreeGrammar.
"""
parser = ContextFreeGrammar('test', {'S': [['a']]}, 'S')
generator = Generator()
generator.parser = parser
assert generator.parser is parser, 'Invalid parser set/retrieved'
def test_scanner_valid():
"""
Ensure overwriting the scanner property works as expected when given
proper input as a RegularGrammar.
"""
scanner = RegularGrammar('test', {'foo': 'bar'})
generator = Generator()
generator.scanner = scanner
assert generator.scanner is scanner, 'Invalid scanner set/retrieved'
def test_constructor():
"""
Ensure successful creation of a Generator object.
"""
generator = Generator()
assert generator is not None, 'No Generator produced'