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# This file is part of python-sql. The COPYRIGHT file at the top level of
# this repository contains the full copyright notices and license terms.
import unittest
from sql import AliasManager, Literal, Table, Values, With, WithQuery
class TestWith(unittest.TestCase):
table = Table('t')
def test_with(self):
with AliasManager():
simple = With(query=self.table.select(self.table.id,
where=self.table.id == 1))
self.assertEqual(simple.statement(),
'"a" AS ('
'SELECT "b"."id" FROM "t" AS "b" WHERE ("b"."id" = %s)'
')')
self.assertEqual(simple.statement_params(), (1,))
def test_with_columns(self):
with AliasManager():
second = With('a', query=self.table.select(self.table.a))
self.assertEqual(second.statement(),
'"a" ("a") AS ('
'SELECT "b"."a" FROM "t" AS "b"'
')')
self.assertEqual(second.statement_params(), ())
def test_with_query(self):
with AliasManager():
simple = With()
simple.query = self.table.select(self.table.id,
where=self.table.id == 1)
second = With()
second.query = simple.select()
wq = WithQuery(with_=[simple, second])
self.assertEqual(wq._with_str(),
'WITH "a" AS ('
'SELECT "b"."id" FROM "t" AS "b" WHERE ("b"."id" = %s)'
'), "c" AS ('
'SELECT * FROM "a" AS "a"'
') ')
self.assertEqual(wq._with_params(), (1,))
def test_recursive(self):
upto10 = With('n', recursive=True)
upto10.query = Values([(1,)])
upto10.query |= upto10.select(
upto10.n + Literal(1),
where=upto10.n < Literal(100))
upto10.query.all_ = True
q = upto10.select(with_=[upto10])
self.assertEqual(str(q),
'WITH RECURSIVE "a" ("n") AS ('
'VALUES (%s) '
'UNION ALL '
'SELECT ("a"."n" + %s) FROM "a" AS "a" WHERE ("a"."n" < %s)'
') SELECT * FROM "a" AS "a"')
self.assertEqual(tuple(q.params), (1, 1, 100))
def test_invalid_with(self):
with self.assertRaises(ValueError):
WithQuery(with_=['foo'])
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