def test_add_scanner(self):
"""Test the ScannerBase add_scanner() method"""
selector = ScannerBase({'.x': 1, '.y': 2})
s = selector.select(self.skey_node('.z'))
assert s is None, s
selector.add_scanner('.z', 3)
s = selector.select(self.skey_node('.z'))
assert s == 3, s
def test_select(self):
"""Test the ScannerBase select() method"""
scanner = ScannerBase(function=self.func)
s = scanner.select('.x')
assert s is scanner, s
selector = ScannerBase({'.x': 1, '.y': 2})
s = selector.select(self.skey_node('.x'))
assert s == 1, s
s = selector.select(self.skey_node('.y'))
assert s == 2, s
s = selector.select(self.skey_node('.z'))
assert s is None, s