def test_set_params_is_equivalent_to_calling_set_param_multiple_times(self):
s = QueryString('')
assert (s.set_params([('abc', '123'), ('def', '456')]) ==
s.set_param('abc', '123').set_param('def', '456'))
def test_set_param_replaces_existing_parameter_names(self):
s = QueryString('abc=123&abc=456')
assert s.set_param('abc', '789') == 'abc=789'
