You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
307 lines
11 KiB
307 lines
11 KiB
# pysqlite2/test/hooks.py: tests for various SQLite-specific hooks
|
|
#
|
|
# Copyright (C) 2006-2007 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 unittest
|
|
import sqlite3 as sqlite
|
|
|
|
from test.support.os_helper import TESTFN, unlink
|
|
|
|
|
|
class CollationTests(unittest.TestCase):
|
|
def test_create_collation_not_string(self):
|
|
con = sqlite.connect(":memory:")
|
|
with self.assertRaises(TypeError):
|
|
con.create_collation(None, lambda x, y: (x > y) - (x < y))
|
|
|
|
def test_create_collation_not_callable(self):
|
|
con = sqlite.connect(":memory:")
|
|
with self.assertRaises(TypeError) as cm:
|
|
con.create_collation("X", 42)
|
|
self.assertEqual(str(cm.exception), 'parameter must be callable')
|
|
|
|
def test_create_collation_not_ascii(self):
|
|
con = sqlite.connect(":memory:")
|
|
with self.assertRaises(sqlite.ProgrammingError):
|
|
con.create_collation("collä", lambda x, y: (x > y) - (x < y))
|
|
|
|
def test_create_collation_bad_upper(self):
|
|
class BadUpperStr(str):
|
|
def upper(self):
|
|
return None
|
|
con = sqlite.connect(":memory:")
|
|
mycoll = lambda x, y: -((x > y) - (x < y))
|
|
con.create_collation(BadUpperStr("mycoll"), mycoll)
|
|
result = con.execute("""
|
|
select x from (
|
|
select 'a' as x
|
|
union
|
|
select 'b' as x
|
|
) order by x collate mycoll
|
|
""").fetchall()
|
|
self.assertEqual(result[0][0], 'b')
|
|
self.assertEqual(result[1][0], 'a')
|
|
|
|
def test_collation_is_used(self):
|
|
def mycoll(x, y):
|
|
# reverse order
|
|
return -((x > y) - (x < y))
|
|
|
|
con = sqlite.connect(":memory:")
|
|
con.create_collation("mycoll", mycoll)
|
|
sql = """
|
|
select x from (
|
|
select 'a' as x
|
|
union
|
|
select 'b' as x
|
|
union
|
|
select 'c' as x
|
|
) order by x collate mycoll
|
|
"""
|
|
result = con.execute(sql).fetchall()
|
|
self.assertEqual(result, [('c',), ('b',), ('a',)],
|
|
msg='the expected order was not returned')
|
|
|
|
con.create_collation("mycoll", None)
|
|
with self.assertRaises(sqlite.OperationalError) as cm:
|
|
result = con.execute(sql).fetchall()
|
|
self.assertEqual(str(cm.exception), 'no such collation sequence: mycoll')
|
|
|
|
def test_collation_returns_large_integer(self):
|
|
def mycoll(x, y):
|
|
# reverse order
|
|
return -((x > y) - (x < y)) * 2**32
|
|
con = sqlite.connect(":memory:")
|
|
con.create_collation("mycoll", mycoll)
|
|
sql = """
|
|
select x from (
|
|
select 'a' as x
|
|
union
|
|
select 'b' as x
|
|
union
|
|
select 'c' as x
|
|
) order by x collate mycoll
|
|
"""
|
|
result = con.execute(sql).fetchall()
|
|
self.assertEqual(result, [('c',), ('b',), ('a',)],
|
|
msg="the expected order was not returned")
|
|
|
|
def test_collation_register_twice(self):
|
|
"""
|
|
Register two different collation functions under the same name.
|
|
Verify that the last one is actually used.
|
|
"""
|
|
con = sqlite.connect(":memory:")
|
|
con.create_collation("mycoll", lambda x, y: (x > y) - (x < y))
|
|
con.create_collation("mycoll", lambda x, y: -((x > y) - (x < y)))
|
|
result = con.execute("""
|
|
select x from (select 'a' as x union select 'b' as x) order by x collate mycoll
|
|
""").fetchall()
|
|
self.assertEqual(result[0][0], 'b')
|
|
self.assertEqual(result[1][0], 'a')
|
|
|
|
def test_deregister_collation(self):
|
|
"""
|
|
Register a collation, then deregister it. Make sure an error is raised if we try
|
|
to use it.
|
|
"""
|
|
con = sqlite.connect(":memory:")
|
|
con.create_collation("mycoll", lambda x, y: (x > y) - (x < y))
|
|
con.create_collation("mycoll", None)
|
|
with self.assertRaises(sqlite.OperationalError) as cm:
|
|
con.execute("select 'a' as x union select 'b' as x order by x collate mycoll")
|
|
self.assertEqual(str(cm.exception), 'no such collation sequence: mycoll')
|
|
|
|
class ProgressTests(unittest.TestCase):
|
|
def test_progress_handler_used(self):
|
|
"""
|
|
Test that the progress handler is invoked once it is set.
|
|
"""
|
|
con = sqlite.connect(":memory:")
|
|
progress_calls = []
|
|
def progress():
|
|
progress_calls.append(None)
|
|
return 0
|
|
con.set_progress_handler(progress, 1)
|
|
con.execute("""
|
|
create table foo(a, b)
|
|
""")
|
|
self.assertTrue(progress_calls)
|
|
|
|
|
|
def test_opcode_count(self):
|
|
"""
|
|
Test that the opcode argument is respected.
|
|
"""
|
|
con = sqlite.connect(":memory:")
|
|
progress_calls = []
|
|
def progress():
|
|
progress_calls.append(None)
|
|
return 0
|
|
con.set_progress_handler(progress, 1)
|
|
curs = con.cursor()
|
|
curs.execute("""
|
|
create table foo (a, b)
|
|
""")
|
|
first_count = len(progress_calls)
|
|
progress_calls = []
|
|
con.set_progress_handler(progress, 2)
|
|
curs.execute("""
|
|
create table bar (a, b)
|
|
""")
|
|
second_count = len(progress_calls)
|
|
self.assertGreaterEqual(first_count, second_count)
|
|
|
|
def test_cancel_operation(self):
|
|
"""
|
|
Test that returning a non-zero value stops the operation in progress.
|
|
"""
|
|
con = sqlite.connect(":memory:")
|
|
def progress():
|
|
return 1
|
|
con.set_progress_handler(progress, 1)
|
|
curs = con.cursor()
|
|
self.assertRaises(
|
|
sqlite.OperationalError,
|
|
curs.execute,
|
|
"create table bar (a, b)")
|
|
|
|
def test_clear_handler(self):
|
|
"""
|
|
Test that setting the progress handler to None clears the previously set handler.
|
|
"""
|
|
con = sqlite.connect(":memory:")
|
|
action = 0
|
|
def progress():
|
|
nonlocal action
|
|
action = 1
|
|
return 0
|
|
con.set_progress_handler(progress, 1)
|
|
con.set_progress_handler(None, 1)
|
|
con.execute("select 1 union select 2 union select 3").fetchall()
|
|
self.assertEqual(action, 0, "progress handler was not cleared")
|
|
|
|
class TraceCallbackTests(unittest.TestCase):
|
|
@contextlib.contextmanager
|
|
def check_stmt_trace(self, cx, expected):
|
|
try:
|
|
traced = []
|
|
cx.set_trace_callback(lambda stmt: traced.append(stmt))
|
|
yield
|
|
finally:
|
|
self.assertEqual(traced, expected)
|
|
cx.set_trace_callback(None)
|
|
|
|
def test_trace_callback_used(self):
|
|
"""
|
|
Test that the trace callback is invoked once it is set.
|
|
"""
|
|
con = sqlite.connect(":memory:")
|
|
traced_statements = []
|
|
def trace(statement):
|
|
traced_statements.append(statement)
|
|
con.set_trace_callback(trace)
|
|
con.execute("create table foo(a, b)")
|
|
self.assertTrue(traced_statements)
|
|
self.assertTrue(any("create table foo" in stmt for stmt in traced_statements))
|
|
|
|
def test_clear_trace_callback(self):
|
|
"""
|
|
Test that setting the trace callback to None clears the previously set callback.
|
|
"""
|
|
con = sqlite.connect(":memory:")
|
|
traced_statements = []
|
|
def trace(statement):
|
|
traced_statements.append(statement)
|
|
con.set_trace_callback(trace)
|
|
con.set_trace_callback(None)
|
|
con.execute("create table foo(a, b)")
|
|
self.assertFalse(traced_statements, "trace callback was not cleared")
|
|
|
|
def test_unicode_content(self):
|
|
"""
|
|
Test that the statement can contain unicode literals.
|
|
"""
|
|
unicode_value = '\xf6\xe4\xfc\xd6\xc4\xdc\xdf\u20ac'
|
|
con = sqlite.connect(":memory:")
|
|
traced_statements = []
|
|
def trace(statement):
|
|
traced_statements.append(statement)
|
|
con.set_trace_callback(trace)
|
|
con.execute("create table foo(x)")
|
|
con.execute("insert into foo(x) values ('%s')" % unicode_value)
|
|
con.commit()
|
|
self.assertTrue(any(unicode_value in stmt for stmt in traced_statements),
|
|
"Unicode data %s garbled in trace callback: %s"
|
|
% (ascii(unicode_value), ', '.join(map(ascii, traced_statements))))
|
|
|
|
def test_trace_callback_content(self):
|
|
# set_trace_callback() shouldn't produce duplicate content (bpo-26187)
|
|
traced_statements = []
|
|
def trace(statement):
|
|
traced_statements.append(statement)
|
|
|
|
queries = ["create table foo(x)",
|
|
"insert into foo(x) values(1)"]
|
|
self.addCleanup(unlink, TESTFN)
|
|
con1 = sqlite.connect(TESTFN, isolation_level=None)
|
|
con2 = sqlite.connect(TESTFN)
|
|
con1.set_trace_callback(trace)
|
|
cur = con1.cursor()
|
|
cur.execute(queries[0])
|
|
con2.execute("create table bar(x)")
|
|
cur.execute(queries[1])
|
|
self.assertEqual(traced_statements, queries)
|
|
|
|
def test_trace_expanded_sql(self):
|
|
expected = [
|
|
"create table t(t)",
|
|
"BEGIN ",
|
|
"insert into t values(0)",
|
|
"insert into t values(1)",
|
|
"insert into t values(2)",
|
|
"COMMIT",
|
|
]
|
|
cx = sqlite.connect(":memory:")
|
|
with self.check_stmt_trace(cx, expected):
|
|
with cx:
|
|
cx.execute("create table t(t)")
|
|
cx.executemany("insert into t values(?)", ((v,) for v in range(3)))
|
|
|
|
|
|
def suite():
|
|
tests = [
|
|
CollationTests,
|
|
ProgressTests,
|
|
TraceCallbackTests,
|
|
]
|
|
return unittest.TestSuite(
|
|
[unittest.TestLoader().loadTestsFromTestCase(t) for t in tests]
|
|
)
|
|
|
|
def test():
|
|
runner = unittest.TextTestRunner()
|
|
runner.run(suite())
|
|
|
|
if __name__ == "__main__":
|
|
test()
|