human
Solve the following python programming problem given the following code:
@ pytest.mark.parametrize ('col_list', ('', 'col1, ')) 
def test_join_using_suggests_common_columns(col_list) : 
    text = ('select * from abc inner join def using (' + col_list) 
    assert (set (suggest_type (col_list, text)) == set ([Column (tables = ((None, 'abc', None, False), (None, 'def', None, False)), drop_unique = True)])) 

    
    

    Fix the buggy line: assert (set (suggest_type (col_list, text)) == set ([Column (tables = ((None, 'abc', None, False), (None, 'def', None, False)), drop_unique = True)]))
assistant
#Here is Python code to fix the buggy line: assert (set (suggest_type (col_list, text)) == set ([Column (tables = ((None, 'abc', None, False), (None, 'def', None, False)), drop_unique = True)]))
.

assert (set (suggest_type (text, text)) == set ([Column (tables = ((None, 'abc', None, False), (None, 'def', None, False)), drop_unique = True)]))