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cpython/Lib/test/test_sqlite3/test_dbapi.py

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# pysqlite2/test/dbapi.py: tests for DB-API compliance
#
# Copyright (C) 2004-2010 Gerhard Häring <gh@ghaering.de>
#
# This file is part of pysqlite.
#
# This software is provided 'as-is', without any express or implied
# warranty. In no event will the authors be held liable for any damages
# arising from the use of this software.
#
# Permission is granted to anyone to use this software for any purpose,
# including commercial applications, and to alter it and redistribute it
# freely, subject to the following restrictions:
#
# 1. The origin of this software must not be misrepresented; you must not
# claim that you wrote the original software. If you use this software
# in a product, an acknowledgment in the product documentation would be
# appreciated but is not required.
# 2. Altered source versions must be plainly marked as such, and must not be
# misrepresented as being the original software.
# 3. This notice may not be removed or altered from any source distribution.
import contextlib
import sqlite3 as sqlite
import subprocess
import sys
import threading
import unittest
from test.support import (
SHORT_TIMEOUT,
check_disallow_instantiation,
threading_helper,
)
from test.support.os_helper import TESTFN, unlink, temp_dir
# Helper for tests using TESTFN
@contextlib.contextmanager
def managed_connect(*args, in_mem=False, **kwargs):
cx = sqlite.connect(*args, **kwargs)
try:
yield cx
finally:
cx.close()
if not in_mem:
unlink(TESTFN)
# Helper for temporary memory databases
def memory_database(*args, **kwargs):
cx = sqlite.connect(":memory:", *args, **kwargs)
return contextlib.closing(cx)
# Temporarily limit a database connection parameter
@contextlib.contextmanager
def cx_limit(cx, category=sqlite.SQLITE_LIMIT_SQL_LENGTH, limit=128):
try:
_prev = cx.setlimit(category, limit)
yield limit
finally:
cx.setlimit(category, _prev)
class ModuleTests(unittest.TestCase):
def test_api_level(self):
self.assertEqual(sqlite.apilevel, "2.0",
"apilevel is %s, should be 2.0" % sqlite.apilevel)
def test_thread_safety(self):
self.assertIn(sqlite.threadsafety, {0, 1, 3},
"threadsafety is %d, should be 0, 1 or 3" %
sqlite.threadsafety)
def test_param_style(self):
self.assertEqual(sqlite.paramstyle, "qmark",
"paramstyle is '%s', should be 'qmark'" %
sqlite.paramstyle)
def test_warning(self):
self.assertTrue(issubclass(sqlite.Warning, Exception),
"Warning is not a subclass of Exception")
def test_error(self):
self.assertTrue(issubclass(sqlite.Error, Exception),
"Error is not a subclass of Exception")
def test_interface_error(self):
self.assertTrue(issubclass(sqlite.InterfaceError, sqlite.Error),
"InterfaceError is not a subclass of Error")
def test_database_error(self):
self.assertTrue(issubclass(sqlite.DatabaseError, sqlite.Error),
"DatabaseError is not a subclass of Error")
def test_data_error(self):
self.assertTrue(issubclass(sqlite.DataError, sqlite.DatabaseError),
"DataError is not a subclass of DatabaseError")
def test_operational_error(self):
self.assertTrue(issubclass(sqlite.OperationalError, sqlite.DatabaseError),
"OperationalError is not a subclass of DatabaseError")
def test_integrity_error(self):
self.assertTrue(issubclass(sqlite.IntegrityError, sqlite.DatabaseError),
"IntegrityError is not a subclass of DatabaseError")
def test_internal_error(self):
self.assertTrue(issubclass(sqlite.InternalError, sqlite.DatabaseError),
"InternalError is not a subclass of DatabaseError")
def test_programming_error(self):
self.assertTrue(issubclass(sqlite.ProgrammingError, sqlite.DatabaseError),
"ProgrammingError is not a subclass of DatabaseError")
def test_not_supported_error(self):
self.assertTrue(issubclass(sqlite.NotSupportedError,
sqlite.DatabaseError),
"NotSupportedError is not a subclass of DatabaseError")
def test_module_constants(self):
consts = [
"SQLITE_ABORT",
"SQLITE_ALTER_TABLE",
"SQLITE_ANALYZE",
"SQLITE_ATTACH",
"SQLITE_AUTH",
"SQLITE_BUSY",
"SQLITE_CANTOPEN",
"SQLITE_CONSTRAINT",
"SQLITE_CORRUPT",
"SQLITE_CREATE_INDEX",
"SQLITE_CREATE_TABLE",
"SQLITE_CREATE_TEMP_INDEX",
"SQLITE_CREATE_TEMP_TABLE",
"SQLITE_CREATE_TEMP_TRIGGER",
"SQLITE_CREATE_TEMP_VIEW",
"SQLITE_CREATE_TRIGGER",
"SQLITE_CREATE_VIEW",
"SQLITE_CREATE_VTABLE",
"SQLITE_DELETE",
"SQLITE_DENY",
"SQLITE_DETACH",
"SQLITE_DONE",
"SQLITE_DROP_INDEX",
"SQLITE_DROP_TABLE",
"SQLITE_DROP_TEMP_INDEX",
"SQLITE_DROP_TEMP_TABLE",
"SQLITE_DROP_TEMP_TRIGGER",
"SQLITE_DROP_TEMP_VIEW",
"SQLITE_DROP_TRIGGER",
"SQLITE_DROP_VIEW",
"SQLITE_DROP_VTABLE",
"SQLITE_EMPTY",
"SQLITE_ERROR",
"SQLITE_FORMAT",
"SQLITE_FULL",
"SQLITE_FUNCTION",
"SQLITE_IGNORE",
"SQLITE_INSERT",
"SQLITE_INTERNAL",
"SQLITE_INTERRUPT",
"SQLITE_IOERR",
"SQLITE_LOCKED",
"SQLITE_MISMATCH",
"SQLITE_MISUSE",
"SQLITE_NOLFS",
"SQLITE_NOMEM",
"SQLITE_NOTADB",
"SQLITE_NOTFOUND",
"SQLITE_OK",
"SQLITE_PERM",
"SQLITE_PRAGMA",
"SQLITE_PROTOCOL",
"SQLITE_RANGE",
"SQLITE_READ",
"SQLITE_READONLY",
"SQLITE_REINDEX",
"SQLITE_ROW",
"SQLITE_SAVEPOINT",
"SQLITE_SCHEMA",
"SQLITE_SELECT",
"SQLITE_TOOBIG",
"SQLITE_TRANSACTION",
"SQLITE_UPDATE",
# Run-time limit categories
"SQLITE_LIMIT_LENGTH",
"SQLITE_LIMIT_SQL_LENGTH",
"SQLITE_LIMIT_COLUMN",
"SQLITE_LIMIT_EXPR_DEPTH",
"SQLITE_LIMIT_COMPOUND_SELECT",
"SQLITE_LIMIT_VDBE_OP",
"SQLITE_LIMIT_FUNCTION_ARG",
"SQLITE_LIMIT_ATTACHED",
"SQLITE_LIMIT_LIKE_PATTERN_LENGTH",
"SQLITE_LIMIT_VARIABLE_NUMBER",
"SQLITE_LIMIT_TRIGGER_DEPTH",
]
if sqlite.sqlite_version_info >= (3, 7, 17):
consts += ["SQLITE_NOTICE", "SQLITE_WARNING"]
if sqlite.sqlite_version_info >= (3, 8, 3):
consts.append("SQLITE_RECURSIVE")
if sqlite.sqlite_version_info >= (3, 8, 7):
consts.append("SQLITE_LIMIT_WORKER_THREADS")
consts += ["PARSE_DECLTYPES", "PARSE_COLNAMES"]
# Extended result codes
consts += [
"SQLITE_ABORT_ROLLBACK",
"SQLITE_BUSY_RECOVERY",
"SQLITE_CANTOPEN_FULLPATH",
"SQLITE_CANTOPEN_ISDIR",
"SQLITE_CANTOPEN_NOTEMPDIR",
"SQLITE_CORRUPT_VTAB",
"SQLITE_IOERR_ACCESS",
"SQLITE_IOERR_BLOCKED",
"SQLITE_IOERR_CHECKRESERVEDLOCK",
"SQLITE_IOERR_CLOSE",
"SQLITE_IOERR_DELETE",
"SQLITE_IOERR_DELETE_NOENT",
"SQLITE_IOERR_DIR_CLOSE",
"SQLITE_IOERR_DIR_FSYNC",
"SQLITE_IOERR_FSTAT",
"SQLITE_IOERR_FSYNC",
"SQLITE_IOERR_LOCK",
"SQLITE_IOERR_NOMEM",
"SQLITE_IOERR_RDLOCK",
"SQLITE_IOERR_READ",
"SQLITE_IOERR_SEEK",
"SQLITE_IOERR_SHMLOCK",
"SQLITE_IOERR_SHMMAP",
"SQLITE_IOERR_SHMOPEN",
"SQLITE_IOERR_SHMSIZE",
"SQLITE_IOERR_SHORT_READ",
"SQLITE_IOERR_TRUNCATE",
"SQLITE_IOERR_UNLOCK",
"SQLITE_IOERR_WRITE",
"SQLITE_LOCKED_SHAREDCACHE",
"SQLITE_READONLY_CANTLOCK",
"SQLITE_READONLY_RECOVERY",
]
if sqlite.version_info >= (3, 7, 16):
consts += [
"SQLITE_CONSTRAINT_CHECK",
"SQLITE_CONSTRAINT_COMMITHOOK",
"SQLITE_CONSTRAINT_FOREIGNKEY",
"SQLITE_CONSTRAINT_FUNCTION",
"SQLITE_CONSTRAINT_NOTNULL",
"SQLITE_CONSTRAINT_PRIMARYKEY",
"SQLITE_CONSTRAINT_TRIGGER",
"SQLITE_CONSTRAINT_UNIQUE",
"SQLITE_CONSTRAINT_VTAB",
"SQLITE_READONLY_ROLLBACK",
]
if sqlite.version_info >= (3, 7, 17):
consts += [
"SQLITE_IOERR_MMAP",
"SQLITE_NOTICE_RECOVER_ROLLBACK",
"SQLITE_NOTICE_RECOVER_WAL",
]
if sqlite.version_info >= (3, 8, 0):
consts += [
"SQLITE_BUSY_SNAPSHOT",
"SQLITE_IOERR_GETTEMPPATH",
"SQLITE_WARNING_AUTOINDEX",
]
if sqlite.version_info >= (3, 8, 1):
consts += ["SQLITE_CANTOPEN_CONVPATH", "SQLITE_IOERR_CONVPATH"]
if sqlite.version_info >= (3, 8, 2):
consts.append("SQLITE_CONSTRAINT_ROWID")
if sqlite.version_info >= (3, 8, 3):
consts.append("SQLITE_READONLY_DBMOVED")
if sqlite.version_info >= (3, 8, 7):
consts.append("SQLITE_AUTH_USER")
if sqlite.version_info >= (3, 9, 0):
consts.append("SQLITE_IOERR_VNODE")
if sqlite.version_info >= (3, 10, 0):
consts.append("SQLITE_IOERR_AUTH")
if sqlite.version_info >= (3, 14, 1):
consts.append("SQLITE_OK_LOAD_PERMANENTLY")
if sqlite.version_info >= (3, 21, 0):
consts += [
"SQLITE_IOERR_BEGIN_ATOMIC",
"SQLITE_IOERR_COMMIT_ATOMIC",
"SQLITE_IOERR_ROLLBACK_ATOMIC",
]
if sqlite.version_info >= (3, 22, 0):
consts += [
"SQLITE_ERROR_MISSING_COLLSEQ",
"SQLITE_ERROR_RETRY",
"SQLITE_READONLY_CANTINIT",
"SQLITE_READONLY_DIRECTORY",
]
if sqlite.version_info >= (3, 24, 0):
consts += ["SQLITE_CORRUPT_SEQUENCE", "SQLITE_LOCKED_VTAB"]
if sqlite.version_info >= (3, 25, 0):
consts += ["SQLITE_CANTOPEN_DIRTYWAL", "SQLITE_ERROR_SNAPSHOT"]
if sqlite.version_info >= (3, 31, 0):
consts += [
"SQLITE_CANTOPEN_SYMLINK",
"SQLITE_CONSTRAINT_PINNED",
"SQLITE_OK_SYMLINK",
]
if sqlite.version_info >= (3, 32, 0):
consts += [
"SQLITE_BUSY_TIMEOUT",
"SQLITE_CORRUPT_INDEX",
"SQLITE_IOERR_DATA",
]
if sqlite.version_info >= (3, 34, 0):
const.append("SQLITE_IOERR_CORRUPTFS")
for const in consts:
with self.subTest(const=const):
self.assertTrue(hasattr(sqlite, const))
def test_error_code_on_exception(self):
err_msg = "unable to open database file"
if sys.platform.startswith("win"):
err_code = sqlite.SQLITE_CANTOPEN_ISDIR
else:
err_code = sqlite.SQLITE_CANTOPEN
with temp_dir() as db:
with self.assertRaisesRegex(sqlite.Error, err_msg) as cm:
sqlite.connect(db)
e = cm.exception
self.assertEqual(e.sqlite_errorcode, err_code)
self.assertTrue(e.sqlite_errorname.startswith("SQLITE_CANTOPEN"))
@unittest.skipIf(sqlite.sqlite_version_info <= (3, 7, 16),
"Requires SQLite 3.7.16 or newer")
def test_extended_error_code_on_exception(self):
with managed_connect(":memory:", in_mem=True) as con:
with con:
con.execute("create table t(t integer check(t > 0))")
errmsg = "constraint failed"
with self.assertRaisesRegex(sqlite.IntegrityError, errmsg) as cm:
con.execute("insert into t values(-1)")
exc = cm.exception
self.assertEqual(exc.sqlite_errorcode,
sqlite.SQLITE_CONSTRAINT_CHECK)
self.assertEqual(exc.sqlite_errorname, "SQLITE_CONSTRAINT_CHECK")
# sqlite3_enable_shared_cache() is deprecated on macOS and calling it may raise
# OperationalError on some buildbots.
@unittest.skipIf(sys.platform == "darwin", "shared cache is deprecated on macOS")
def test_shared_cache_deprecated(self):
for enable in (True, False):
with self.assertWarns(DeprecationWarning) as cm:
sqlite.enable_shared_cache(enable)
self.assertIn("dbapi.py", cm.filename)
def test_disallow_instantiation(self):
cx = sqlite.connect(":memory:")
check_disallow_instantiation(self, type(cx("select 1")))
def test_complete_statement(self):
self.assertFalse(sqlite.complete_statement("select t"))
self.assertTrue(sqlite.complete_statement("create table t(t);"))
class ConnectionTests(unittest.TestCase):
def setUp(self):
self.cx = sqlite.connect(":memory:")
cu = self.cx.cursor()
cu.execute("create table test(id integer primary key, name text)")
cu.execute("insert into test(name) values (?)", ("foo",))
def tearDown(self):
self.cx.close()
def test_commit(self):
self.cx.commit()
def test_commit_after_no_changes(self):
"""
A commit should also work when no changes were made to the database.
"""
self.cx.commit()
self.cx.commit()
def test_rollback(self):
self.cx.rollback()
def test_rollback_after_no_changes(self):
"""
A rollback should also work when no changes were made to the database.
"""
self.cx.rollback()
self.cx.rollback()
def test_cursor(self):
cu = self.cx.cursor()
def test_failed_open(self):
YOU_CANNOT_OPEN_THIS = "/foo/bar/bla/23534/mydb.db"
with self.assertRaises(sqlite.OperationalError):
con = sqlite.connect(YOU_CANNOT_OPEN_THIS)
def test_close(self):
self.cx.close()
def test_use_after_close(self):
sql = "select 1"
cu = self.cx.cursor()
res = cu.execute(sql)
self.cx.close()
self.assertRaises(sqlite.ProgrammingError, res.fetchall)
self.assertRaises(sqlite.ProgrammingError, cu.execute, sql)
self.assertRaises(sqlite.ProgrammingError, cu.executemany, sql, [])
self.assertRaises(sqlite.ProgrammingError, cu.executescript, sql)
self.assertRaises(sqlite.ProgrammingError, self.cx.execute, sql)
self.assertRaises(sqlite.ProgrammingError,
self.cx.executemany, sql, [])
self.assertRaises(sqlite.ProgrammingError, self.cx.executescript, sql)
self.assertRaises(sqlite.ProgrammingError,
self.cx.create_function, "t", 1, lambda x: x)
self.assertRaises(sqlite.ProgrammingError, self.cx.cursor)
with self.assertRaises(sqlite.ProgrammingError):
with self.cx:
pass
def test_exceptions(self):
# Optional DB-API extension.
self.assertEqual(self.cx.Warning, sqlite.Warning)
self.assertEqual(self.cx.Error, sqlite.Error)
self.assertEqual(self.cx.InterfaceError, sqlite.InterfaceError)
self.assertEqual(self.cx.DatabaseError, sqlite.DatabaseError)
self.assertEqual(self.cx.DataError, sqlite.DataError)
self.assertEqual(self.cx.OperationalError, sqlite.OperationalError)
self.assertEqual(self.cx.IntegrityError, sqlite.IntegrityError)
self.assertEqual(self.cx.InternalError, sqlite.InternalError)
self.assertEqual(self.cx.ProgrammingError, sqlite.ProgrammingError)
self.assertEqual(self.cx.NotSupportedError, sqlite.NotSupportedError)
def test_in_transaction(self):
# Can't use db from setUp because we want to test initial state.
cx = sqlite.connect(":memory:")
cu = cx.cursor()
self.assertEqual(cx.in_transaction, False)
cu.execute("create table transactiontest(id integer primary key, name text)")
self.assertEqual(cx.in_transaction, False)
cu.execute("insert into transactiontest(name) values (?)", ("foo",))
self.assertEqual(cx.in_transaction, True)
cu.execute("select name from transactiontest where name=?", ["foo"])
row = cu.fetchone()
self.assertEqual(cx.in_transaction, True)
cx.commit()
self.assertEqual(cx.in_transaction, False)
cu.execute("select name from transactiontest where name=?", ["foo"])
row = cu.fetchone()
self.assertEqual(cx.in_transaction, False)
def test_in_transaction_ro(self):
with self.assertRaises(AttributeError):
self.cx.in_transaction = True
def test_connection_exceptions(self):
exceptions = [
"DataError",
"DatabaseError",
"Error",
"IntegrityError",
"InterfaceError",
"NotSupportedError",
"OperationalError",
"ProgrammingError",
"Warning",
]
for exc in exceptions:
with self.subTest(exc=exc):
self.assertTrue(hasattr(self.cx, exc))
self.assertIs(getattr(sqlite, exc), getattr(self.cx, exc))
def test_interrupt_on_closed_db(self):
cx = sqlite.connect(":memory:")
cx.close()
with self.assertRaises(sqlite.ProgrammingError):
cx.interrupt()
def test_interrupt(self):
self.assertIsNone(self.cx.interrupt())
def test_drop_unused_refs(self):
for n in range(500):
cu = self.cx.execute(f"select {n}")
self.assertEqual(cu.fetchone()[0], n)
def test_connection_limits(self):
category = sqlite.SQLITE_LIMIT_SQL_LENGTH
saved_limit = self.cx.getlimit(category)
try:
new_limit = 10
prev_limit = self.cx.setlimit(category, new_limit)
self.assertEqual(saved_limit, prev_limit)
self.assertEqual(self.cx.getlimit(category), new_limit)
msg = "query string is too large"
self.assertRaisesRegex(sqlite.DataError, msg,
self.cx.execute, "select 1 as '16'")
finally: # restore saved limit
self.cx.setlimit(category, saved_limit)
def test_connection_bad_limit_category(self):
msg = "'category' is out of bounds"
cat = 1111
self.assertRaisesRegex(sqlite.ProgrammingError, msg,
self.cx.getlimit, cat)
self.assertRaisesRegex(sqlite.ProgrammingError, msg,
self.cx.setlimit, cat, 0)
def test_connection_init_bad_isolation_level(self):
msg = (
"isolation_level string must be '', 'DEFERRED', 'IMMEDIATE', or "
"'EXCLUSIVE'"
)
levels = (
"BOGUS",
" ",
"DEFERRE",
"IMMEDIAT",
"EXCLUSIV",
"DEFERREDS",
"IMMEDIATES",
"EXCLUSIVES",
)
for level in levels:
with self.subTest(level=level):
with self.assertRaisesRegex(ValueError, msg):
memory_database(isolation_level=level)
with memory_database() as cx:
with self.assertRaisesRegex(ValueError, msg):
cx.isolation_level = level
# Check that the default level is not changed
self.assertEqual(cx.isolation_level, "")
def test_connection_init_good_isolation_levels(self):
for level in ("", "DEFERRED", "IMMEDIATE", "EXCLUSIVE", None):
with self.subTest(level=level):
with memory_database(isolation_level=level) as cx:
self.assertEqual(cx.isolation_level, level)
with memory_database() as cx:
self.assertEqual(cx.isolation_level, "")
cx.isolation_level = level
self.assertEqual(cx.isolation_level, level)
def test_connection_reinit(self):
db = ":memory:"
cx = sqlite.connect(db)
cx.text_factory = bytes
cx.row_factory = sqlite.Row
cu = cx.cursor()
cu.execute("create table foo (bar)")
cu.executemany("insert into foo (bar) values (?)",
((str(v),) for v in range(4)))
cu.execute("select bar from foo")
rows = [r for r in cu.fetchmany(2)]
self.assertTrue(all(isinstance(r, sqlite.Row) for r in rows))
self.assertEqual([r[0] for r in rows], [b"0", b"1"])
cx.__init__(db)
cx.execute("create table foo (bar)")
cx.executemany("insert into foo (bar) values (?)",
((v,) for v in ("a", "b", "c", "d")))
# This uses the old database, old row factory, but new text factory
rows = [r for r in cu.fetchall()]
self.assertTrue(all(isinstance(r, sqlite.Row) for r in rows))
self.assertEqual([r[0] for r in rows], ["2", "3"])
def test_connection_bad_reinit(self):
cx = sqlite.connect(":memory:")
with cx:
cx.execute("create table t(t)")
with temp_dir() as db:
self.assertRaisesRegex(sqlite.OperationalError,
"unable to open database file",
cx.__init__, db)
self.assertRaisesRegex(sqlite.ProgrammingError,
"Base Connection.__init__ not called",
cx.executemany, "insert into t values(?)",
((v,) for v in range(3)))
class UninitialisedConnectionTests(unittest.TestCase):
def setUp(self):
self.cx = sqlite.Connection.__new__(sqlite.Connection)
def test_uninit_operations(self):
funcs = (
lambda: self.cx.isolation_level,
lambda: self.cx.total_changes,
lambda: self.cx.in_transaction,
lambda: self.cx.iterdump(),
lambda: self.cx.cursor(),
lambda: self.cx.close(),
)
for func in funcs:
with self.subTest(func=func):
self.assertRaisesRegex(sqlite.ProgrammingError,
"Base Connection.__init__ not called",
func)
class OpenTests(unittest.TestCase):
_sql = "create table test(id integer)"
def test_open_with_path_like_object(self):
""" Checks that we can successfully connect to a database using an object that
is PathLike, i.e. has __fspath__(). """
class Path:
def __fspath__(self):
return TESTFN
path = Path()
with managed_connect(path) as cx:
cx.execute(self._sql)
def test_open_uri(self):
with managed_connect(TESTFN) as cx:
cx.execute(self._sql)
with managed_connect(f"file:{TESTFN}", uri=True) as cx:
cx.execute(self._sql)
with self.assertRaises(sqlite.OperationalError):
with managed_connect(f"file:{TESTFN}?mode=ro", uri=True) as cx:
cx.execute(self._sql)
def test_database_keyword(self):
with sqlite.connect(database=":memory:") as cx:
self.assertEqual(type(cx), sqlite.Connection)
class CursorTests(unittest.TestCase):
def setUp(self):
self.cx = sqlite.connect(":memory:")
self.cu = self.cx.cursor()
self.cu.execute(
"create table test(id integer primary key, name text, "
"income number, unique_test text unique)"
)
self.cu.execute("insert into test(name) values (?)", ("foo",))
def tearDown(self):
self.cu.close()
self.cx.close()
def test_execute_no_args(self):
self.cu.execute("delete from test")
def test_execute_illegal_sql(self):
with self.assertRaises(sqlite.OperationalError):
self.cu.execute("select asdf")
def test_execute_too_much_sql(self):
self.assertRaisesRegex(sqlite.ProgrammingError,
"You can only execute one statement at a time",
self.cu.execute, "select 5+4; select 4+5")
def test_execute_too_much_sql2(self):
self.cu.execute("select 5+4; -- foo bar")
def test_execute_too_much_sql3(self):
self.cu.execute("""
select 5+4;
/*
foo
*/
""")
def test_execute_wrong_sql_arg(self):
with self.assertRaises(TypeError):
self.cu.execute(42)
def test_execute_arg_int(self):
self.cu.execute("insert into test(id) values (?)", (42,))
def test_execute_arg_float(self):
self.cu.execute("insert into test(income) values (?)", (2500.32,))
def test_execute_arg_string(self):
self.cu.execute("insert into test(name) values (?)", ("Hugo",))
def test_execute_arg_string_with_zero_byte(self):
self.cu.execute("insert into test(name) values (?)", ("Hu\x00go",))
self.cu.execute("select name from test where id=?", (self.cu.lastrowid,))
row = self.cu.fetchone()
self.assertEqual(row[0], "Hu\x00go")
def test_execute_non_iterable(self):
with self.assertRaises(ValueError) as cm:
self.cu.execute("insert into test(id) values (?)", 42)
self.assertEqual(str(cm.exception), 'parameters are of unsupported type')
def test_execute_wrong_no_of_args1(self):
# too many parameters
with self.assertRaises(sqlite.ProgrammingError):
self.cu.execute("insert into test(id) values (?)", (17, "Egon"))
def test_execute_wrong_no_of_args2(self):
# too little parameters
with self.assertRaises(sqlite.ProgrammingError):
self.cu.execute("insert into test(id) values (?)")
def test_execute_wrong_no_of_args3(self):
# no parameters, parameters are needed
with self.assertRaises(sqlite.ProgrammingError):
self.cu.execute("insert into test(id) values (?)")
def test_execute_param_list(self):
self.cu.execute("insert into test(name) values ('foo')")
self.cu.execute("select name from test where name=?", ["foo"])
row = self.cu.fetchone()
self.assertEqual(row[0], "foo")
def test_execute_param_sequence(self):
class L:
def __len__(self):
return 1
def __getitem__(self, x):
assert x == 0
return "foo"
self.cu.execute("insert into test(name) values ('foo')")
self.cu.execute("select name from test where name=?", L())
row = self.cu.fetchone()
self.assertEqual(row[0], "foo")
def test_execute_param_sequence_bad_len(self):
# Issue41662: Error in __len__() was overridden with ProgrammingError.
class L:
def __len__(self):
1/0
def __getitem__(slf, x):
raise AssertionError
self.cu.execute("insert into test(name) values ('foo')")
with self.assertRaises(ZeroDivisionError):
self.cu.execute("select name from test where name=?", L())
def test_execute_too_many_params(self):
category = sqlite.SQLITE_LIMIT_VARIABLE_NUMBER
msg = "too many SQL variables"
with cx_limit(self.cx, category=category, limit=1):
self.cu.execute("select * from test where id=?", (1,))
with self.assertRaisesRegex(sqlite.OperationalError, msg):
self.cu.execute("select * from test where id!=? and id!=?",
(1, 2))
def test_execute_dict_mapping(self):
self.cu.execute("insert into test(name) values ('foo')")
self.cu.execute("select name from test where name=:name", {"name": "foo"})
row = self.cu.fetchone()
self.assertEqual(row[0], "foo")
def test_execute_dict_mapping_mapping(self):
class D(dict):
def __missing__(self, key):
return "foo"
self.cu.execute("insert into test(name) values ('foo')")
self.cu.execute("select name from test where name=:name", D())
row = self.cu.fetchone()
self.assertEqual(row[0], "foo")
def test_execute_dict_mapping_too_little_args(self):
self.cu.execute("insert into test(name) values ('foo')")
with self.assertRaises(sqlite.ProgrammingError):
self.cu.execute("select name from test where name=:name and id=:id", {"name": "foo"})
def test_execute_dict_mapping_no_args(self):
self.cu.execute("insert into test(name) values ('foo')")
with self.assertRaises(sqlite.ProgrammingError):
self.cu.execute("select name from test where name=:name")
def test_execute_dict_mapping_unnamed(self):
self.cu.execute("insert into test(name) values ('foo')")
with self.assertRaises(sqlite.ProgrammingError):
self.cu.execute("select name from test where name=?", {"name": "foo"})
def test_close(self):
self.cu.close()
def test_rowcount_execute(self):
self.cu.execute("delete from test")
self.cu.execute("insert into test(name) values ('foo')")
self.cu.execute("insert into test(name) values ('foo')")
self.cu.execute("update test set name='bar'")
self.assertEqual(self.cu.rowcount, 2)
def test_rowcount_select(self):
"""
pysqlite does not know the rowcount of SELECT statements, because we
don't fetch all rows after executing the select statement. The rowcount
has thus to be -1.
"""
self.cu.execute("select 5 union select 6")
self.assertEqual(self.cu.rowcount, -1)
def test_rowcount_executemany(self):
self.cu.execute("delete from test")
self.cu.executemany("insert into test(name) values (?)", [(1,), (2,), (3,)])
self.assertEqual(self.cu.rowcount, 3)
def test_total_changes(self):
self.cu.execute("insert into test(name) values ('foo')")
self.cu.execute("insert into test(name) values ('foo')")
self.assertLess(2, self.cx.total_changes, msg='total changes reported wrong value')
# Checks for executemany:
# Sequences are required by the DB-API, iterators
# enhancements in pysqlite.
def test_execute_many_sequence(self):
self.cu.executemany("insert into test(income) values (?)", [(x,) for x in range(100, 110)])
def test_execute_many_iterator(self):
class MyIter:
def __init__(self):
self.value = 5
def __iter__(self):
return self
def __next__(self):
if self.value == 10:
raise StopIteration
else:
self.value += 1
return (self.value,)
self.cu.executemany("insert into test(income) values (?)", MyIter())
def test_execute_many_generator(self):
def mygen():
for i in range(5):
yield (i,)
self.cu.executemany("insert into test(income) values (?)", mygen())
def test_execute_many_wrong_sql_arg(self):
with self.assertRaises(TypeError):
self.cu.executemany(42, [(3,)])
def test_execute_many_select(self):
with self.assertRaises(sqlite.ProgrammingError):
self.cu.executemany("select ?", [(3,)])
def test_execute_many_not_iterable(self):
with self.assertRaises(TypeError):
self.cu.executemany("insert into test(income) values (?)", 42)
def test_fetch_iter(self):
# Optional DB-API extension.
self.cu.execute("delete from test")
self.cu.execute("insert into test(id) values (?)", (5,))
self.cu.execute("insert into test(id) values (?)", (6,))
self.cu.execute("select id from test order by id")
lst = []
for row in self.cu:
lst.append(row[0])
self.assertEqual(lst[0], 5)
self.assertEqual(lst[1], 6)
def test_fetchone(self):
self.cu.execute("select name from test")
row = self.cu.fetchone()
self.assertEqual(row[0], "foo")
row = self.cu.fetchone()
self.assertEqual(row, None)
def test_fetchone_no_statement(self):
cur = self.cx.cursor()
row = cur.fetchone()
self.assertEqual(row, None)
def test_array_size(self):
# must default to 1
self.assertEqual(self.cu.arraysize, 1)
# now set to 2
self.cu.arraysize = 2
# now make the query return 3 rows
self.cu.execute("delete from test")
self.cu.execute("insert into test(name) values ('A')")
self.cu.execute("insert into test(name) values ('B')")
self.cu.execute("insert into test(name) values ('C')")
self.cu.execute("select name from test")
res = self.cu.fetchmany()
self.assertEqual(len(res), 2)
def test_fetchmany(self):
self.cu.execute("select name from test")
res = self.cu.fetchmany(100)
self.assertEqual(len(res), 1)
res = self.cu.fetchmany(100)
self.assertEqual(res, [])
def test_fetchmany_kw_arg(self):
"""Checks if fetchmany works with keyword arguments"""
self.cu.execute("select name from test")
res = self.cu.fetchmany(size=100)
self.assertEqual(len(res), 1)
def test_fetchall(self):
self.cu.execute("select name from test")
res = self.cu.fetchall()
self.assertEqual(len(res), 1)
res = self.cu.fetchall()
self.assertEqual(res, [])
def test_setinputsizes(self):
self.cu.setinputsizes([3, 4, 5])
def test_setoutputsize(self):
self.cu.setoutputsize(5, 0)
def test_setoutputsize_no_column(self):
self.cu.setoutputsize(42)
def test_cursor_connection(self):
# Optional DB-API extension.
self.assertEqual(self.cu.connection, self.cx)
def test_wrong_cursor_callable(self):
with self.assertRaises(TypeError):
def f(): pass
cur = self.cx.cursor(f)
def test_cursor_wrong_class(self):
class Foo: pass
foo = Foo()
with self.assertRaises(TypeError):
cur = sqlite.Cursor(foo)
def test_last_row_id_on_replace(self):
"""
INSERT OR REPLACE and REPLACE INTO should produce the same behavior.
"""
sql = '{} INTO test(id, unique_test) VALUES (?, ?)'
for statement in ('INSERT OR REPLACE', 'REPLACE'):
with self.subTest(statement=statement):
self.cu.execute(sql.format(statement), (1, 'foo'))
self.assertEqual(self.cu.lastrowid, 1)
def test_last_row_id_on_ignore(self):
self.cu.execute(
"insert or ignore into test(unique_test) values (?)",
('test',))
self.assertEqual(self.cu.lastrowid, 2)
self.cu.execute(
"insert or ignore into test(unique_test) values (?)",
('test',))
self.assertEqual(self.cu.lastrowid, 2)
def test_last_row_id_insert_o_r(self):
results = []
for statement in ('FAIL', 'ABORT', 'ROLLBACK'):
sql = 'INSERT OR {} INTO test(unique_test) VALUES (?)'
with self.subTest(statement='INSERT OR {}'.format(statement)):
self.cu.execute(sql.format(statement), (statement,))
results.append((statement, self.cu.lastrowid))
with self.assertRaises(sqlite.IntegrityError):
self.cu.execute(sql.format(statement), (statement,))
results.append((statement, self.cu.lastrowid))
expected = [
('FAIL', 2), ('FAIL', 2),
('ABORT', 3), ('ABORT', 3),
('ROLLBACK', 4), ('ROLLBACK', 4),
]
self.assertEqual(results, expected)
def test_column_count(self):
# Check that column count is updated correctly for cached statements
select = "select * from test"
res = self.cu.execute(select)
old_count = len(res.description)
# Add a new column and execute the cached select query again
self.cu.execute("alter table test add newcol")
res = self.cu.execute(select)
new_count = len(res.description)
self.assertEqual(new_count - old_count, 1)
def test_same_query_in_multiple_cursors(self):
cursors = [self.cx.execute("select 1") for _ in range(3)]
for cu in cursors:
self.assertEqual(cu.fetchall(), [(1,)])
class ThreadTests(unittest.TestCase):
def setUp(self):
self.con = sqlite.connect(":memory:")
self.cur = self.con.cursor()
self.cur.execute("create table test(name text)")
def tearDown(self):
self.cur.close()
self.con.close()
@threading_helper.reap_threads
def _run_test(self, fn, *args, **kwds):
def run(err):
try:
fn(*args, **kwds)
err.append("did not raise ProgrammingError")
except sqlite.ProgrammingError:
pass
except:
err.append("raised wrong exception")
err = []
t = threading.Thread(target=run, kwargs={"err": err})
t.start()
t.join()
if err:
self.fail("\n".join(err))
def test_check_connection_thread(self):
fns = [
lambda: self.con.cursor(),
lambda: self.con.commit(),
lambda: self.con.rollback(),
lambda: self.con.close(),
lambda: self.con.set_trace_callback(None),
lambda: self.con.set_authorizer(None),
lambda: self.con.create_collation("foo", None),
lambda: self.con.setlimit(sqlite.SQLITE_LIMIT_LENGTH, -1),
lambda: self.con.getlimit(sqlite.SQLITE_LIMIT_LENGTH),
]
for fn in fns:
with self.subTest(fn=fn):
self._run_test(fn)
def test_check_cursor_thread(self):
fns = [
lambda: self.cur.execute("insert into test(name) values('a')"),
lambda: self.cur.close(),
lambda: self.cur.execute("select name from test"),
lambda: self.cur.fetchone(),
]
for fn in fns:
with self.subTest(fn=fn):
self._run_test(fn)
@threading_helper.reap_threads
def test_dont_check_same_thread(self):
def run(con, err):
try:
con.execute("select 1")
except sqlite.Error:
err.append("multi-threading not allowed")
con = sqlite.connect(":memory:", check_same_thread=False)
err = []
t = threading.Thread(target=run, kwargs={"con": con, "err": err})
t.start()
t.join()
self.assertEqual(len(err), 0, "\n".join(err))
class ConstructorTests(unittest.TestCase):
def test_date(self):
d = sqlite.Date(2004, 10, 28)
def test_time(self):
t = sqlite.Time(12, 39, 35)
def test_timestamp(self):
ts = sqlite.Timestamp(2004, 10, 28, 12, 39, 35)
def test_date_from_ticks(self):
d = sqlite.DateFromTicks(42)
def test_time_from_ticks(self):
t = sqlite.TimeFromTicks(42)
def test_timestamp_from_ticks(self):
ts = sqlite.TimestampFromTicks(42)
def test_binary(self):
b = sqlite.Binary(b"\0'")
class ExtensionTests(unittest.TestCase):
def test_script_string_sql(self):
con = sqlite.connect(":memory:")
cur = con.cursor()
cur.executescript("""
-- bla bla
/* a stupid comment */
create table a(i);
insert into a(i) values (5);
""")
cur.execute("select i from a")
res = cur.fetchone()[0]
self.assertEqual(res, 5)
def test_script_syntax_error(self):
con = sqlite.connect(":memory:")
cur = con.cursor()
with self.assertRaises(sqlite.OperationalError):
cur.executescript("create table test(x); asdf; create table test2(x)")
def test_script_error_normal(self):
con = sqlite.connect(":memory:")
cur = con.cursor()
with self.assertRaises(sqlite.OperationalError):
cur.executescript("create table test(sadfsadfdsa); select foo from hurz;")
def test_cursor_executescript_as_bytes(self):
con = sqlite.connect(":memory:")
cur = con.cursor()
with self.assertRaises(TypeError):
cur.executescript(b"create table test(foo); insert into test(foo) values (5);")
def test_cursor_executescript_with_null_characters(self):
con = sqlite.connect(":memory:")
cur = con.cursor()
with self.assertRaises(ValueError):
cur.executescript("""
create table a(i);\0
insert into a(i) values (5);
""")
def test_cursor_executescript_with_surrogates(self):
con = sqlite.connect(":memory:")
cur = con.cursor()
with self.assertRaises(UnicodeEncodeError):
cur.executescript("""
create table a(s);
insert into a(s) values ('\ud8ff');
""")
def test_cursor_executescript_too_large_script(self):
msg = "query string is too large"
with memory_database() as cx, cx_limit(cx) as lim:
cx.executescript("select 'almost too large'".ljust(lim))
with self.assertRaisesRegex(sqlite.DataError, msg):
cx.executescript("select 'too large'".ljust(lim+1))
def test_cursor_executescript_tx_control(self):
con = sqlite.connect(":memory:")
con.execute("begin")
self.assertTrue(con.in_transaction)
con.executescript("select 1")
self.assertFalse(con.in_transaction)
def test_connection_execute(self):
con = sqlite.connect(":memory:")
result = con.execute("select 5").fetchone()[0]
self.assertEqual(result, 5, "Basic test of Connection.execute")
def test_connection_executemany(self):
con = sqlite.connect(":memory:")
con.execute("create table test(foo)")
con.executemany("insert into test(foo) values (?)", [(3,), (4,)])
result = con.execute("select foo from test order by foo").fetchall()
self.assertEqual(result[0][0], 3, "Basic test of Connection.executemany")
self.assertEqual(result[1][0], 4, "Basic test of Connection.executemany")
def test_connection_executescript(self):
con = sqlite.connect(":memory:")
con.executescript("create table test(foo); insert into test(foo) values (5);")
result = con.execute("select foo from test").fetchone()[0]
self.assertEqual(result, 5, "Basic test of Connection.executescript")
class ClosedConTests(unittest.TestCase):
def test_closed_con_cursor(self):
con = sqlite.connect(":memory:")
con.close()
with self.assertRaises(sqlite.ProgrammingError):
cur = con.cursor()
def test_closed_con_commit(self):
con = sqlite.connect(":memory:")
con.close()
with self.assertRaises(sqlite.ProgrammingError):
con.commit()
def test_closed_con_rollback(self):
con = sqlite.connect(":memory:")
con.close()
with self.assertRaises(sqlite.ProgrammingError):
con.rollback()
def test_closed_cur_execute(self):
con = sqlite.connect(":memory:")
cur = con.cursor()
con.close()
with self.assertRaises(sqlite.ProgrammingError):
cur.execute("select 4")
def test_closed_create_function(self):
con = sqlite.connect(":memory:")
con.close()
def f(x): return 17
with self.assertRaises(sqlite.ProgrammingError):
con.create_function("foo", 1, f)
def test_closed_create_aggregate(self):
con = sqlite.connect(":memory:")
con.close()
class Agg:
def __init__(self):
pass
def step(self, x):
pass
def finalize(self):
return 17
with self.assertRaises(sqlite.ProgrammingError):
con.create_aggregate("foo", 1, Agg)
def test_closed_set_authorizer(self):
con = sqlite.connect(":memory:")
con.close()
def authorizer(*args):
return sqlite.DENY
with self.assertRaises(sqlite.ProgrammingError):
con.set_authorizer(authorizer)
def test_closed_set_progress_callback(self):
con = sqlite.connect(":memory:")
con.close()
def progress(): pass
with self.assertRaises(sqlite.ProgrammingError):
con.set_progress_handler(progress, 100)
def test_closed_call(self):
con = sqlite.connect(":memory:")
con.close()
with self.assertRaises(sqlite.ProgrammingError):
con()
class ClosedCurTests(unittest.TestCase):
def test_closed(self):
con = sqlite.connect(":memory:")
cur = con.cursor()
cur.close()
for method_name in ("execute", "executemany", "executescript", "fetchall", "fetchmany", "fetchone"):
if method_name in ("execute", "executescript"):
params = ("select 4 union select 5",)
elif method_name == "executemany":
params = ("insert into foo(bar) values (?)", [(3,), (4,)])
else:
params = []
with self.assertRaises(sqlite.ProgrammingError):
method = getattr(cur, method_name)
method(*params)
class SqliteOnConflictTests(unittest.TestCase):
"""
Tests for SQLite's "insert on conflict" feature.
See https://www.sqlite.org/lang_conflict.html for details.
"""
def setUp(self):
self.cx = sqlite.connect(":memory:")
self.cu = self.cx.cursor()
self.cu.execute("""
CREATE TABLE test(
id INTEGER PRIMARY KEY, name TEXT, unique_name TEXT UNIQUE
);
""")
def tearDown(self):
self.cu.close()
self.cx.close()
def test_on_conflict_rollback_with_explicit_transaction(self):
self.cx.isolation_level = None # autocommit mode
self.cu = self.cx.cursor()
# Start an explicit transaction.
self.cu.execute("BEGIN")
self.cu.execute("INSERT INTO test(name) VALUES ('abort_test')")
self.cu.execute("INSERT OR ROLLBACK INTO test(unique_name) VALUES ('foo')")
with self.assertRaises(sqlite.IntegrityError):
self.cu.execute("INSERT OR ROLLBACK INTO test(unique_name) VALUES ('foo')")
# Use connection to commit.
self.cx.commit()
self.cu.execute("SELECT name, unique_name from test")
# Transaction should have rolled back and nothing should be in table.
self.assertEqual(self.cu.fetchall(), [])
def test_on_conflict_abort_raises_with_explicit_transactions(self):
# Abort cancels the current sql statement but doesn't change anything
# about the current transaction.
self.cx.isolation_level = None # autocommit mode
self.cu = self.cx.cursor()
# Start an explicit transaction.
self.cu.execute("BEGIN")
self.cu.execute("INSERT INTO test(name) VALUES ('abort_test')")
self.cu.execute("INSERT OR ABORT INTO test(unique_name) VALUES ('foo')")
with self.assertRaises(sqlite.IntegrityError):
self.cu.execute("INSERT OR ABORT INTO test(unique_name) VALUES ('foo')")
self.cx.commit()
self.cu.execute("SELECT name, unique_name FROM test")
# Expect the first two inserts to work, third to do nothing.
self.assertEqual(self.cu.fetchall(), [('abort_test', None), (None, 'foo',)])
def test_on_conflict_rollback_without_transaction(self):
# Start of implicit transaction
self.cu.execute("INSERT INTO test(name) VALUES ('abort_test')")
self.cu.execute("INSERT OR ROLLBACK INTO test(unique_name) VALUES ('foo')")
with self.assertRaises(sqlite.IntegrityError):
self.cu.execute("INSERT OR ROLLBACK INTO test(unique_name) VALUES ('foo')")
self.cu.execute("SELECT name, unique_name FROM test")
# Implicit transaction is rolled back on error.
self.assertEqual(self.cu.fetchall(), [])
def test_on_conflict_abort_raises_without_transactions(self):
# Abort cancels the current sql statement but doesn't change anything
# about the current transaction.
self.cu.execute("INSERT INTO test(name) VALUES ('abort_test')")
self.cu.execute("INSERT OR ABORT INTO test(unique_name) VALUES ('foo')")
with self.assertRaises(sqlite.IntegrityError):
self.cu.execute("INSERT OR ABORT INTO test(unique_name) VALUES ('foo')")
# Make sure all other values were inserted.
self.cu.execute("SELECT name, unique_name FROM test")
self.assertEqual(self.cu.fetchall(), [('abort_test', None), (None, 'foo',)])
def test_on_conflict_fail(self):
self.cu.execute("INSERT OR FAIL INTO test(unique_name) VALUES ('foo')")
with self.assertRaises(sqlite.IntegrityError):
self.cu.execute("INSERT OR FAIL INTO test(unique_name) VALUES ('foo')")
self.assertEqual(self.cu.fetchall(), [])
def test_on_conflict_ignore(self):
self.cu.execute("INSERT OR IGNORE INTO test(unique_name) VALUES ('foo')")
# Nothing should happen.
self.cu.execute("INSERT OR IGNORE INTO test(unique_name) VALUES ('foo')")
self.cu.execute("SELECT unique_name FROM test")
self.assertEqual(self.cu.fetchall(), [('foo',)])
def test_on_conflict_replace(self):
self.cu.execute("INSERT OR REPLACE INTO test(name, unique_name) VALUES ('Data!', 'foo')")
# There shouldn't be an IntegrityError exception.
self.cu.execute("INSERT OR REPLACE INTO test(name, unique_name) VALUES ('Very different data!', 'foo')")
self.cu.execute("SELECT name, unique_name FROM test")
self.assertEqual(self.cu.fetchall(), [('Very different data!', 'foo')])
class MultiprocessTests(unittest.TestCase):
CONNECTION_TIMEOUT = SHORT_TIMEOUT / 1000. # Defaults to 30 ms
def tearDown(self):
unlink(TESTFN)
def test_ctx_mgr_rollback_if_commit_failed(self):
# bpo-27334: ctx manager does not rollback if commit fails
SCRIPT = f"""if 1:
import sqlite3
def wait():
print("started")
assert "database is locked" in input()
cx = sqlite3.connect("{TESTFN}", timeout={self.CONNECTION_TIMEOUT})
cx.create_function("wait", 0, wait)
with cx:
cx.execute("create table t(t)")
try:
# execute two transactions; both will try to lock the db
cx.executescript('''
-- start a transaction and wait for parent
begin transaction;
select * from t;
select wait();
rollback;
-- start a new transaction; would fail if parent holds lock
begin transaction;
select * from t;
rollback;
''')
finally:
cx.close()
"""
# spawn child process
proc = subprocess.Popen(
[sys.executable, "-c", SCRIPT],
encoding="utf-8",
bufsize=0,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
)
self.addCleanup(proc.communicate)
# wait for child process to start
self.assertEqual("started", proc.stdout.readline().strip())
cx = sqlite.connect(TESTFN, timeout=self.CONNECTION_TIMEOUT)
try: # context manager should correctly release the db lock
with cx:
cx.execute("insert into t values('test')")
except sqlite.OperationalError as exc:
proc.stdin.write(str(exc))
else:
proc.stdin.write("no error")
finally:
cx.close()
# terminate child process
self.assertIsNone(proc.returncode)
try:
proc.communicate(input="end", timeout=SHORT_TIMEOUT)
except subprocess.TimeoutExpired:
proc.kill()
proc.communicate()
raise
self.assertEqual(proc.returncode, 0)
if __name__ == "__main__":
unittest.main()
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