psycopg2/tests/test_sql.py
Daniele Varrazzo b241def64b Fix representation of sql.Placeholder
Fix also Placeholder tests, including an error which made an assert
always true, which made us miss the regression in #1291.
2021-06-17 00:28:14 +01:00

413 lines
16 KiB
Python
Executable File

#!/usr/bin/env python
# test_sql.py - tests for the psycopg2.sql module
#
# Copyright (C) 2016-2019 Daniele Varrazzo <daniele.varrazzo@gmail.com>
# Copyright (C) 2020-2021 The Psycopg Team
#
# psycopg2 is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# In addition, as a special exception, the copyright holders give
# permission to link this program with the OpenSSL library (or with
# modified versions of OpenSSL that use the same license as OpenSSL),
# and distribute linked combinations including the two.
#
# You must obey the GNU Lesser General Public License in all respects for
# all of the code used other than OpenSSL.
#
# psycopg2 is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
# License for more details.
import datetime as dt
import unittest
from .testutils import (
ConnectingTestCase, skip_before_postgres, skip_copy_if_green, StringIO,
skip_if_crdb)
import psycopg2
from psycopg2 import sql
class SqlFormatTests(ConnectingTestCase):
def test_pos(self):
s = sql.SQL("select {} from {}").format(
sql.Identifier('field'), sql.Identifier('table'))
s1 = s.as_string(self.conn)
self.assert_(isinstance(s1, str))
self.assertEqual(s1, 'select "field" from "table"')
def test_pos_spec(self):
s = sql.SQL("select {0} from {1}").format(
sql.Identifier('field'), sql.Identifier('table'))
s1 = s.as_string(self.conn)
self.assert_(isinstance(s1, str))
self.assertEqual(s1, 'select "field" from "table"')
s = sql.SQL("select {1} from {0}").format(
sql.Identifier('table'), sql.Identifier('field'))
s1 = s.as_string(self.conn)
self.assert_(isinstance(s1, str))
self.assertEqual(s1, 'select "field" from "table"')
def test_dict(self):
s = sql.SQL("select {f} from {t}").format(
f=sql.Identifier('field'), t=sql.Identifier('table'))
s1 = s.as_string(self.conn)
self.assert_(isinstance(s1, str))
self.assertEqual(s1, 'select "field" from "table"')
def test_compose_literal(self):
s = sql.SQL("select {0};").format(sql.Literal(dt.date(2016, 12, 31)))
s1 = s.as_string(self.conn)
self.assertEqual(s1, "select '2016-12-31'::date;")
def test_compose_empty(self):
s = sql.SQL("select foo;").format()
s1 = s.as_string(self.conn)
self.assertEqual(s1, "select foo;")
def test_percent_escape(self):
s = sql.SQL("42 % {0}").format(sql.Literal(7))
s1 = s.as_string(self.conn)
self.assertEqual(s1, "42 % 7")
def test_braces_escape(self):
s = sql.SQL("{{{0}}}").format(sql.Literal(7))
self.assertEqual(s.as_string(self.conn), "{7}")
s = sql.SQL("{{1,{0}}}").format(sql.Literal(7))
self.assertEqual(s.as_string(self.conn), "{1,7}")
def test_compose_badnargs(self):
self.assertRaises(IndexError, sql.SQL("select {0};").format)
def test_compose_badnargs_auto(self):
self.assertRaises(IndexError, sql.SQL("select {};").format)
self.assertRaises(ValueError, sql.SQL("select {} {1};").format, 10, 20)
self.assertRaises(ValueError, sql.SQL("select {0} {};").format, 10, 20)
def test_compose_bad_args_type(self):
self.assertRaises(IndexError, sql.SQL("select {0};").format, a=10)
self.assertRaises(KeyError, sql.SQL("select {x};").format, 10)
def test_must_be_composable(self):
self.assertRaises(TypeError, sql.SQL("select {0};").format, 'foo')
self.assertRaises(TypeError, sql.SQL("select {0};").format, 10)
def test_no_modifiers(self):
self.assertRaises(ValueError, sql.SQL("select {a!r};").format, a=10)
self.assertRaises(ValueError, sql.SQL("select {a:<};").format, a=10)
def test_must_be_adaptable(self):
class Foo:
pass
self.assertRaises(psycopg2.ProgrammingError,
sql.SQL("select {0};").format(sql.Literal(Foo())).as_string, self.conn)
def test_execute(self):
cur = self.conn.cursor()
cur.execute("""
create table test_compose (
id serial primary key,
foo text, bar text, "ba'z" text)
""")
cur.execute(
sql.SQL("insert into {0} (id, {1}) values (%s, {2})").format(
sql.Identifier('test_compose'),
sql.SQL(', ').join(map(sql.Identifier, ['foo', 'bar', "ba'z"])),
(sql.Placeholder() * 3).join(', ')),
(10, 'a', 'b', 'c'))
cur.execute("select * from test_compose")
self.assertEqual(cur.fetchall(), [(10, 'a', 'b', 'c')])
def test_executemany(self):
cur = self.conn.cursor()
cur.execute("""
create table test_compose (
id serial primary key,
foo text, bar text, "ba'z" text)
""")
cur.executemany(
sql.SQL("insert into {0} (id, {1}) values (%s, {2})").format(
sql.Identifier('test_compose'),
sql.SQL(', ').join(map(sql.Identifier, ['foo', 'bar', "ba'z"])),
(sql.Placeholder() * 3).join(', ')),
[(10, 'a', 'b', 'c'), (20, 'd', 'e', 'f')])
cur.execute("select * from test_compose")
self.assertEqual(cur.fetchall(),
[(10, 'a', 'b', 'c'), (20, 'd', 'e', 'f')])
@skip_if_crdb("copy")
@skip_copy_if_green
@skip_before_postgres(8, 2)
def test_copy(self):
cur = self.conn.cursor()
cur.execute("""
create table test_compose (
id serial primary key,
foo text, bar text, "ba'z" text)
""")
s = StringIO("10\ta\tb\tc\n20\td\te\tf\n")
cur.copy_expert(
sql.SQL("copy {t} (id, foo, bar, {f}) from stdin").format(
t=sql.Identifier("test_compose"), f=sql.Identifier("ba'z")), s)
s1 = StringIO()
cur.copy_expert(
sql.SQL("copy (select {f} from {t} order by id) to stdout").format(
t=sql.Identifier("test_compose"), f=sql.Identifier("ba'z")), s1)
s1.seek(0)
self.assertEqual(s1.read(), 'c\nf\n')
class IdentifierTests(ConnectingTestCase):
def test_class(self):
self.assert_(issubclass(sql.Identifier, sql.Composable))
def test_init(self):
self.assert_(isinstance(sql.Identifier('foo'), sql.Identifier))
self.assert_(isinstance(sql.Identifier('foo'), sql.Identifier))
self.assert_(isinstance(sql.Identifier('foo', 'bar', 'baz'), sql.Identifier))
self.assertRaises(TypeError, sql.Identifier)
self.assertRaises(TypeError, sql.Identifier, 10)
self.assertRaises(TypeError, sql.Identifier, dt.date(2016, 12, 31))
def test_strings(self):
self.assertEqual(sql.Identifier('foo').strings, ('foo',))
self.assertEqual(sql.Identifier('foo', 'bar').strings, ('foo', 'bar'))
# Legacy method
self.assertEqual(sql.Identifier('foo').string, 'foo')
self.assertRaises(AttributeError,
getattr, sql.Identifier('foo', 'bar'), 'string')
def test_repr(self):
obj = sql.Identifier("fo'o")
self.assertEqual(repr(obj), 'Identifier("fo\'o")')
self.assertEqual(repr(obj), str(obj))
obj = sql.Identifier("fo'o", 'ba"r')
self.assertEqual(repr(obj), 'Identifier("fo\'o", \'ba"r\')')
self.assertEqual(repr(obj), str(obj))
def test_eq(self):
self.assert_(sql.Identifier('foo') == sql.Identifier('foo'))
self.assert_(sql.Identifier('foo', 'bar') == sql.Identifier('foo', 'bar'))
self.assert_(sql.Identifier('foo') != sql.Identifier('bar'))
self.assert_(sql.Identifier('foo') != 'foo')
self.assert_(sql.Identifier('foo') != sql.SQL('foo'))
def test_as_str(self):
self.assertEqual(
sql.Identifier('foo').as_string(self.conn), '"foo"')
self.assertEqual(
sql.Identifier('foo', 'bar').as_string(self.conn), '"foo"."bar"')
self.assertEqual(
sql.Identifier("fo'o", 'ba"r').as_string(self.conn), '"fo\'o"."ba""r"')
def test_join(self):
self.assert_(not hasattr(sql.Identifier('foo'), 'join'))
class LiteralTests(ConnectingTestCase):
def test_class(self):
self.assert_(issubclass(sql.Literal, sql.Composable))
def test_init(self):
self.assert_(isinstance(sql.Literal('foo'), sql.Literal))
self.assert_(isinstance(sql.Literal('foo'), sql.Literal))
self.assert_(isinstance(sql.Literal(b'foo'), sql.Literal))
self.assert_(isinstance(sql.Literal(42), sql.Literal))
self.assert_(isinstance(
sql.Literal(dt.date(2016, 12, 31)), sql.Literal))
def test_wrapped(self):
self.assertEqual(sql.Literal('foo').wrapped, 'foo')
def test_repr(self):
self.assertEqual(repr(sql.Literal("foo")), "Literal('foo')")
self.assertEqual(str(sql.Literal("foo")), "Literal('foo')")
self.assertQuotedEqual(sql.Literal("foo").as_string(self.conn), "'foo'")
self.assertEqual(sql.Literal(42).as_string(self.conn), "42")
self.assertEqual(
sql.Literal(dt.date(2017, 1, 1)).as_string(self.conn),
"'2017-01-01'::date")
def test_eq(self):
self.assert_(sql.Literal('foo') == sql.Literal('foo'))
self.assert_(sql.Literal('foo') != sql.Literal('bar'))
self.assert_(sql.Literal('foo') != 'foo')
self.assert_(sql.Literal('foo') != sql.SQL('foo'))
def test_must_be_adaptable(self):
class Foo:
pass
self.assertRaises(psycopg2.ProgrammingError,
sql.Literal(Foo()).as_string, self.conn)
class SQLTests(ConnectingTestCase):
def test_class(self):
self.assert_(issubclass(sql.SQL, sql.Composable))
def test_init(self):
self.assert_(isinstance(sql.SQL('foo'), sql.SQL))
self.assert_(isinstance(sql.SQL('foo'), sql.SQL))
self.assertRaises(TypeError, sql.SQL, 10)
self.assertRaises(TypeError, sql.SQL, dt.date(2016, 12, 31))
def test_string(self):
self.assertEqual(sql.SQL('foo').string, 'foo')
def test_repr(self):
self.assertEqual(repr(sql.SQL("foo")), "SQL('foo')")
self.assertEqual(str(sql.SQL("foo")), "SQL('foo')")
self.assertEqual(sql.SQL("foo").as_string(self.conn), "foo")
def test_eq(self):
self.assert_(sql.SQL('foo') == sql.SQL('foo'))
self.assert_(sql.SQL('foo') != sql.SQL('bar'))
self.assert_(sql.SQL('foo') != 'foo')
self.assert_(sql.SQL('foo') != sql.Literal('foo'))
def test_sum(self):
obj = sql.SQL("foo") + sql.SQL("bar")
self.assert_(isinstance(obj, sql.Composed))
self.assertEqual(obj.as_string(self.conn), "foobar")
def test_sum_inplace(self):
obj = sql.SQL("foo")
obj += sql.SQL("bar")
self.assert_(isinstance(obj, sql.Composed))
self.assertEqual(obj.as_string(self.conn), "foobar")
def test_multiply(self):
obj = sql.SQL("foo") * 3
self.assert_(isinstance(obj, sql.Composed))
self.assertEqual(obj.as_string(self.conn), "foofoofoo")
def test_join(self):
obj = sql.SQL(", ").join(
[sql.Identifier('foo'), sql.SQL('bar'), sql.Literal(42)])
self.assert_(isinstance(obj, sql.Composed))
self.assertEqual(obj.as_string(self.conn), '"foo", bar, 42')
obj = sql.SQL(", ").join(
sql.Composed([sql.Identifier('foo'), sql.SQL('bar'), sql.Literal(42)]))
self.assert_(isinstance(obj, sql.Composed))
self.assertEqual(obj.as_string(self.conn), '"foo", bar, 42')
obj = sql.SQL(", ").join([])
self.assertEqual(obj, sql.Composed([]))
class ComposedTest(ConnectingTestCase):
def test_class(self):
self.assert_(issubclass(sql.Composed, sql.Composable))
def test_repr(self):
obj = sql.Composed([sql.Literal("foo"), sql.Identifier("b'ar")])
self.assertEqual(repr(obj),
"""Composed([Literal('foo'), Identifier("b'ar")])""")
self.assertEqual(str(obj), repr(obj))
def test_seq(self):
l = [sql.SQL('foo'), sql.Literal('bar'), sql.Identifier('baz')]
self.assertEqual(sql.Composed(l).seq, l)
def test_eq(self):
l = [sql.Literal("foo"), sql.Identifier("b'ar")]
l2 = [sql.Literal("foo"), sql.Literal("b'ar")]
self.assert_(sql.Composed(l) == sql.Composed(list(l)))
self.assert_(sql.Composed(l) != l)
self.assert_(sql.Composed(l) != sql.Composed(l2))
def test_join(self):
obj = sql.Composed([sql.Literal("foo"), sql.Identifier("b'ar")])
obj = obj.join(", ")
self.assert_(isinstance(obj, sql.Composed))
self.assertQuotedEqual(obj.as_string(self.conn), "'foo', \"b'ar\"")
def test_sum(self):
obj = sql.Composed([sql.SQL("foo ")])
obj = obj + sql.Literal("bar")
self.assert_(isinstance(obj, sql.Composed))
self.assertQuotedEqual(obj.as_string(self.conn), "foo 'bar'")
def test_sum_inplace(self):
obj = sql.Composed([sql.SQL("foo ")])
obj += sql.Literal("bar")
self.assert_(isinstance(obj, sql.Composed))
self.assertQuotedEqual(obj.as_string(self.conn), "foo 'bar'")
obj = sql.Composed([sql.SQL("foo ")])
obj += sql.Composed([sql.Literal("bar")])
self.assert_(isinstance(obj, sql.Composed))
self.assertQuotedEqual(obj.as_string(self.conn), "foo 'bar'")
def test_iter(self):
obj = sql.Composed([sql.SQL("foo"), sql.SQL('bar')])
it = iter(obj)
i = next(it)
self.assertEqual(i, sql.SQL('foo'))
i = next(it)
self.assertEqual(i, sql.SQL('bar'))
self.assertRaises(StopIteration, next, it)
class PlaceholderTest(ConnectingTestCase):
def test_class(self):
self.assert_(issubclass(sql.Placeholder, sql.Composable))
def test_name(self):
self.assertEqual(sql.Placeholder().name, None)
self.assertEqual(sql.Placeholder('foo').name, 'foo')
def test_repr(self):
self.assertEqual(str(sql.Placeholder()), 'Placeholder()')
self.assertEqual(repr(sql.Placeholder()), 'Placeholder()')
self.assertEqual(sql.Placeholder().as_string(self.conn), '%s')
def test_repr_name(self):
self.assertEqual(str(sql.Placeholder('foo')), "Placeholder('foo')")
self.assertEqual(repr(sql.Placeholder('foo')), "Placeholder('foo')")
self.assertEqual(sql.Placeholder('foo').as_string(self.conn), '%(foo)s')
def test_bad_name(self):
self.assertRaises(ValueError, sql.Placeholder, ')')
def test_eq(self):
self.assertEqual(sql.Placeholder('foo'), sql.Placeholder('foo'))
self.assertNotEqual(sql.Placeholder('foo'), sql.Placeholder('bar'))
self.assertNotEqual(sql.Placeholder('foo'), 'foo')
self.assertEqual(sql.Placeholder(), sql.Placeholder())
self.assertNotEqual(sql.Placeholder('foo'), sql.Placeholder())
self.assertNotEqual(sql.Placeholder('foo'), sql.Literal('foo'))
class ValuesTest(ConnectingTestCase):
def test_null(self):
self.assert_(isinstance(sql.NULL, sql.SQL))
self.assertEqual(sql.NULL.as_string(self.conn), "NULL")
def test_default(self):
self.assert_(isinstance(sql.DEFAULT, sql.SQL))
self.assertEqual(sql.DEFAULT.as_string(self.conn), "DEFAULT")
def test_suite():
return unittest.TestLoader().loadTestsFromName(__name__)
if __name__ == "__main__":
unittest.main()