def check_parses(self, text, expected):
source = open(self.dir.write('test.yaml', text))
actual = Config.parse(source)
compare(expected, actual)
def check_config_error(self, text, expected):
source = open(self.dir.write('test.yaml', text))
with ShouldRaise(ConfigError) as s:
Config.parse(source)
compare(expected, str(s.raised), trailing_whitespace=False)
