HackBase/python-cx_Oracle
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
python-cx_Oracle/test/test_1100_connection.py
Anthony Tuininga f3984cee55 The connection created by using an external handle should never be used after 
the external handle has been closed or destroyed (since otherwise the memory
used may have already been freed and reused by other parts of the application).
2020-12-08 11:51:54 -07:00

378 lines
17 KiB
Python
Raw Blame History

#------------------------------------------------------------------------------
# Copyright (c) 2016, 2020, Oracle and/or its affiliates. All rights reserved.
#
# Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
#
# Portions Copyright 2001-2007, Computronix (Canada) Ltd., Edmonton, Alberta,
# Canada. All rights reserved.
#------------------------------------------------------------------------------
"""
1100 - Module for testing connections
"""
import test_env
import cx_Oracle as oracledb
import random
import string
import threading
class TestCase(test_env.BaseTestCase):
requires_connection = False
def __connect_and_drop(self):
"""Connect to the database, perform a query and drop the connection."""
connection = test_env.get_connection(threaded=True)
cursor = connection.cursor()
cursor.execute("select count(*) from TestNumbers")
count, = cursor.fetchone()
self.assertEqual(count, 10)
def __verify_args(self, connection):
self.assertEqual(connection.username, test_env.get_main_user(),
"user name differs")
self.assertEqual(connection.tnsentry, test_env.get_connect_string(),
"tnsentry differs")
self.assertEqual(connection.dsn, test_env.get_connect_string(),
"dsn differs")
def __verify_attributes(self, connection, attrName, value, sql):
setattr(connection, attrName, value)
cursor = connection.cursor()
cursor.execute(sql)
result, = cursor.fetchone()
self.assertEqual(result, value, "%s value mismatch" % attrName)
def test_1100_all_args(self):
"1100 - connection to database with user, password, TNS separate"
connection = test_env.get_connection()
self.__verify_args(connection)
def test_1101_app_context(self):
"1101 - test use of application context"
namespace = "CLIENTCONTEXT"
app_context_entries = [
( namespace, "ATTR1", "VALUE1" ),
( namespace, "ATTR2", "VALUE2" ),
( namespace, "ATTR3", "VALUE3" )
]
connection = test_env.get_connection(appcontext=app_context_entries)
cursor = connection.cursor()
for namespace, name, value in app_context_entries:
cursor.execute("select sys_context(:1, :2) from dual",
(namespace, name))
actual_value, = cursor.fetchone()
self.assertEqual(actual_value, value)
def test_1102_app_context_negative(self):
"1102 - test invalid use of application context"
self.assertRaises(TypeError, oracledb.connect,
test_env.get_main_user(),
test_env.get_main_password(),
test_env.get_connect_string(),
appcontext=[('userenv', 'action')])
def test_1103_attributes(self):
"1103 - test connection end-to-end tracing attributes"
connection = test_env.get_connection()
if test_env.get_client_version() >= (12, 1) \
and not self.is_on_oracle_cloud(connection):
sql = "select dbop_name from v$sql_monitor " \
"where sid = sys_context('userenv', 'sid')" \
"and status = 'EXECUTING'"
self.__verify_attributes(connection, "dbop", "oracledb_dbop", sql)
sql = "select sys_context('userenv', 'action') from dual"
self.__verify_attributes(connection, "action", "oracledb_Action", sql)
sql = "select sys_context('userenv', 'module') from dual"
self.__verify_attributes(connection, "module", "oracledb_Module", sql)
sql = "select sys_context('userenv', 'client_info') from dual"
self.__verify_attributes(connection, "clientinfo", "oracledb_cinfo",
sql)
sql = "select sys_context('userenv', 'client_identifier') from dual"
self.__verify_attributes(connection, "client_identifier",
"oracledb_cid", sql)
def test_1104_autocommit(self):
"1104 - test use of autocommit"
connection = test_env.get_connection()
cursor = connection.cursor()
other_connection = test_env.get_connection()
other_cursor = other_connection.cursor()
cursor.execute("truncate table TestTempTable")
cursor.execute("insert into TestTempTable (IntCol) values (1)")
other_cursor.execute("select IntCol from TestTempTable")
rows = other_cursor.fetchall()
self.assertEqual(rows, [])
connection.autocommit = True
cursor.execute("insert into TestTempTable (IntCol) values (2)")
other_cursor.execute("select IntCol from TestTempTable order by IntCol")
rows = other_cursor.fetchall()
self.assertEqual(rows, [(1,), (2,)])
def test_1105_bad_connect_string(self):
"1105 - connection to database with bad connect string"
self.assertRaises(oracledb.DatabaseError, oracledb.connect,
test_env.get_main_user())
self.assertRaises(oracledb.DatabaseError, oracledb.connect,
test_env.get_main_user() + "@" + \
test_env.get_connect_string())
self.assertRaises(oracledb.DatabaseError, oracledb.connect,
test_env.get_main_user() + "@" + \
test_env.get_connect_string() + "/" + \
test_env.get_main_password())
def test_1106_bad_password(self):
"1106 - connection to database with bad password"
self.assertRaises(oracledb.DatabaseError, oracledb.connect,
test_env.get_main_user(),
test_env.get_main_password() + "X",
test_env.get_connect_string())
def test_1107_change_password(self):
"1107 - test changing password"
connection = test_env.get_connection()
if self.is_on_oracle_cloud(connection):
self.skipTest("passwords on Oracle Cloud are strictly controlled")
sys_random = random.SystemRandom()
new_password = "".join(sys_random.choice(string.ascii_letters) \
for i in range(20))
connection.changepassword(test_env.get_main_password(), new_password)
cconnection = oracledb.connect(test_env.get_main_user(), new_password,
test_env.get_connect_string())
connection.changepassword(new_password, test_env.get_main_password())
def test_1108_change_password_negative(self):
"1108 - test changing password to an invalid value"
connection = test_env.get_connection()
if self.is_on_oracle_cloud(connection):
self.skipTest("passwords on Oracle Cloud are strictly controlled")
new_password = "1" * 150
self.assertRaises(oracledb.DatabaseError, connection.changepassword,
test_env.get_main_password(), new_password)
def test_1109_parse_password(self):
"1109 - test connecting with password containing / and @ symbols"
connection = test_env.get_connection()
if self.is_on_oracle_cloud(connection):
self.skipTest("passwords on Oracle Cloud are strictly controlled")
sys_random = random.SystemRandom()
chars = list(sys_random.choice(string.ascii_letters) for i in range(20))
chars[4] = "/"
chars[8] = "@"
new_password = "".join(chars)
connection.changepassword(test_env.get_main_password(), new_password)
try:
arg = "%s/%s@%s" % (test_env.get_main_user(), new_password,
test_env.get_connect_string())
oracledb.connect(arg)
finally:
connection.changepassword(new_password,
test_env.get_main_password())
def test_1110_encodings(self):
"1110 - connection with only encoding/nencoding specified should work"
connection = oracledb.connect(test_env.get_main_user(),
test_env.get_main_password(),
test_env.get_connect_string())
encoding = connection.encoding
nencoding = connection.nencoding
alt_encoding = "ISO-8859-1"
connection = oracledb.connect(test_env.get_main_user(),
test_env.get_main_password(),
test_env.get_connect_string(),
encoding=alt_encoding)
self.assertEqual(connection.encoding, alt_encoding)
self.assertEqual(connection.nencoding, nencoding)
connection = oracledb.connect(test_env.get_main_user(),
test_env.get_main_password(),
test_env.get_connect_string(),
nencoding=alt_encoding)
self.assertEqual(connection.encoding, encoding)
self.assertEqual(connection.nencoding, alt_encoding)
def test_1111_different_encodings(self):
"1111 - different encodings can be specified for encoding/nencoding"
connection = oracledb.connect(test_env.get_main_user(),
test_env.get_main_password(),
test_env.get_connect_string(),
encoding="UTF-8", nencoding="UTF-16")
value = "\u03b4\u4e2a"
cursor = connection.cursor()
nchar_var = cursor.var(oracledb.DB_TYPE_NVARCHAR, 100)
nchar_var.setvalue(0, value)
cursor.execute("select :value from dual", value=nchar_var)
result, = cursor.fetchone()
self.assertEqual(result, value)
def test_1112_exception_on_close(self):
"1112 - confirm an exception is raised after closing a connection"
connection = test_env.get_connection()
connection.close()
self.assertRaises(oracledb.InterfaceError, connection.rollback)
def test_1113_connect_with_handle(self):
"1113 - test creating a connection using a handle"
connection = test_env.get_connection()
cursor = connection.cursor()
cursor.execute("truncate table TestTempTable")
int_value = random.randint(1, 32768)
cursor.execute("""
insert into TestTempTable (IntCol, StringCol)
values (:val, null)""", val=int_value)
connection2 = oracledb.connect(handle = connection.handle)
cursor = connection2.cursor()
cursor.execute("select IntCol from TestTempTable")
fetched_int_value, = cursor.fetchone()
self.assertEqual(fetched_int_value, int_value)
cursor.close()
self.assertRaises(oracledb.DatabaseError, connection2.close)
connection.close()
def test_1114_make_dsn(self):
"1114 - test making a data source name from host, port and sid"
format_string = "(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)" + \
"(HOST=%s)(PORT=%d))(CONNECT_DATA=(SID=%s)))"
args = ("hostname", 1521, "TEST")
result = oracledb.makedsn(*args)
self.assertEqual(result, format_string % args)
def test_1115_single_arg(self):
"1115 - connection to database with user, password, DSN together"
arg = "%s/%s@%s" % (test_env.get_main_user(),
test_env.get_main_password(),
test_env.get_connect_string())
connection = oracledb.connect(arg)
self.__verify_args(connection)
def test_1116_version(self):
"1116 - connection version is a string"
connection = test_env.get_connection()
self.assertTrue(isinstance(connection.version, str))
def test_1117_rollback_on_close(self):
"1117 - connection rolls back before close"
connection = test_env.get_connection()
cursor = connection.cursor()
cursor.execute("truncate table TestTempTable")
other_connection = test_env.get_connection()
other_cursor = other_connection.cursor()
other_cursor.execute("insert into TestTempTable (IntCol) values (1)")
other_cursor.close()
other_connection.close()
cursor.execute("select count(*) from TestTempTable")
count, = cursor.fetchone()
self.assertEqual(count, 0)
def test_1118_rollback_on_del(self):
"1118 - connection rolls back before destruction"
connection = test_env.get_connection()
cursor = connection.cursor()
cursor.execute("truncate table TestTempTable")
other_connection = test_env.get_connection()
other_cursor = other_connection.cursor()
other_cursor.execute("insert into TestTempTable (IntCol) values (1)")
del other_cursor
del other_connection
cursor.execute("select count(*) from TestTempTable")
count, = cursor.fetchone()
self.assertEqual(count, 0)
def test_1119_threading(self):
"1119 - connection to database with multiple threads"
threads = []
for i in range(20):
thread = threading.Thread(None, self.__connect_and_drop)
threads.append(thread)
thread.start()
for thread in threads:
thread.join()
def test_1120_string_format(self):
"1120 - test string format of connection"
connection = test_env.get_connection()
expected_value = "<cx_Oracle.Connection to %s@%s>" % \
(test_env.get_main_user(), test_env.get_connect_string())
self.assertEqual(str(connection), expected_value)
def test_1121_ctx_mgr_close(self):
"1121 - test context manager - close"
connection = test_env.get_connection()
with connection:
cursor = connection.cursor()
cursor.execute("truncate table TestTempTable")
cursor.execute("insert into TestTempTable (IntCol) values (1)")
connection.commit()
cursor.execute("insert into TestTempTable (IntCol) values (2)")
self.assertRaises(oracledb.InterfaceError, connection.ping)
connection = test_env.get_connection()
cursor = connection.cursor()
cursor.execute("select count(*) from TestTempTable")
count, = cursor.fetchone()
self.assertEqual(count, 1)
def test_1122_connection_attributes(self):
"1122 - test connection attribute values"
connection = oracledb.connect(test_env.get_main_user(),
test_env.get_main_password(),
test_env.get_connect_string(),
encoding="ASCII")
self.assertEqual(connection.maxBytesPerCharacter, 1)
connection = oracledb.connect(test_env.get_main_user(),
test_env.get_main_password(),
test_env.get_connect_string(),
encoding="UTF-8")
self.assertEqual(connection.maxBytesPerCharacter, 4)
if test_env.get_client_version() >= (12, 1):
self.assertEqual(connection.ltxid, b'')
self.assertEqual(connection.current_schema, None)
connection.current_schema = "test_schema"
self.assertEqual(connection.current_schema, "test_schema")
self.assertEqual(connection.edition, None)
connection.external_name = "test_external"
self.assertEqual(connection.external_name, "test_external")
connection.internal_name = "test_internal"
self.assertEqual(connection.internal_name, "test_internal")
connection.stmtcachesize = 30
self.assertEqual(connection.stmtcachesize, 30)
self.assertRaises(TypeError, connection.stmtcachesize, 20.5)
self.assertRaises(TypeError, connection.stmtcachesize, "value")
def test_1123_closed_connection_attributes(self):
"1123 - test closed connection attribute values"
connection = test_env.get_connection()
connection.close()
attr_names = ["current_schema", "edition", "external_name",
"internal_name", "stmtcachesize"]
if test_env.get_client_version() >= (12, 1):
attr_names.append("ltxid")
for name in attr_names:
self.assertRaises(oracledb.InterfaceError, getattr, connection,
name)
def test_1124_ping(self):
"1124 - test connection ping"
connection = test_env.get_connection()
connection.ping()
def test_1125_transaction_begin(self):
"1125 - test begin, prepare, cancel transaction"
connection = test_env.get_connection()
cursor = connection.cursor()
cursor.execute("truncate table TestTempTable")
connection.begin(10, 'trxnId', 'branchId')
self.assertEqual(connection.prepare(), False)
connection.begin(10, 'trxnId', 'branchId')
cursor.execute("""
insert into TestTempTable (IntCol, StringCol)
values (1, 'tesName')""")
self.assertEqual(connection.prepare(), True)
connection.cancel()
connection.rollback()
cursor.execute("select count(*) from TestTempTable")
count, = cursor.fetchone()
self.assertEqual(count, 0)
if __name__ == "__main__":
test_env.run_test_cases()
Reference in New Issue View Git Blame Copy Permalink