def test_case_1(self):
"""
Test case
'id' -> 'id ASC'
"""
result = sort_str_to_sql(sort_expression='id')
self.assertEqual(result, 'id ASC')
def test_case_9(self):
"""
Test case
Incorrect input types -> ''
"""
result = sort_str_to_sql(sort_expression=['+id'])
self.assertEqual(result, '')
def test_case_7(self):
"""
Test case
'-id,+age,-name' -> 'id DESC, age ASC, name DESC'
"""
result = sort_str_to_sql(sort_expression='-id,+age,-name')
self.assertEqual(result, 'id DESC, age ASC, name DESC')
def test_case_8(self):
"""
Test case
'' -> ''
"""
result = sort_str_to_sql(sort_expression='')
self.assertEqual(result, '')
def test_case_6(self):
"""
Test case
' +id , -name ' -> 'id ASC, name DESC'
"""
result = sort_str_to_sql(sort_expression=' +id , -name ')
self.assertEqual(result, 'id ASC, name DESC')
