def test_can_add_param_to_statement(self):
p = Pypher()
n = 'some_param'
v = 'value {}'.format(random())
param = Param(n, v)
p.CONTAINS(param)
exp = 'CONTAINS ${}'.format(n)
s = str(p)
self.assertEqual(exp, s)
self.assertEqual(1, len(p.bound_params))
