def test_query_no_nameservers(self):
resolver = dns.resolver.Resolver()
domain = dns.name.from_text('example.com.')
with unittest.mock.patch.object(resolver, 'query', side_effect=dns.resolver.NoNameservers()):
result = fierce.query(resolver, domain)
self.assertIsNone(result)
def test_query_timeout(self):
resolver = dns.resolver.Resolver()
domain = dns.name.from_text('example.com.')
with unittest.mock.patch.object(resolver, 'query', side_effect=dns.exception.Timeout()):
result = fierce.query(resolver, domain)
self.assertIsNone(result)
def test_query_nxdomain(self):
resolver = dns.resolver.Resolver()
domain = dns.name.from_text('example.com.')
with unittest.mock.patch.object(resolver,
'query',
side_effect=dns.resolver.NXDOMAIN()):
result = fierce.query(resolver, domain)
assert result is None
