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bpo-44958: Only reset sqlite3 statements when needed (GH-27844)

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Erlend Egeberg Aasland 2021-09-21 13:20:34 +02:00 • committed by GitHub
parent debd804037
commit 050d103595
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4 changed files with 84 additions and 48 deletions
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49
Lib/sqlite3/test/test_regression.py
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@ -124,13 +124,14 @@ class RegressionTests(unittest.TestCase):
"""
SELECT = "select * from foo"
con = sqlite.connect(":memory:",detect_types=sqlite.PARSE_DECLTYPES)
con.execute("create table foo(bar timestamp)")
con.execute("insert into foo(bar) values (?)", (datetime.datetime.now(),))
con.execute(SELECT).close()
con.execute("drop table foo")
con.execute("create table foo(bar integer)")
con.execute("insert into foo(bar) values (5)")
con.execute(SELECT).close()
cur = con.cursor()
cur.execute("create table foo(bar timestamp)")
cur.execute("insert into foo(bar) values (?)", (datetime.datetime.now(),))
cur.execute(SELECT)
cur.execute("drop table foo")
cur.execute("create table foo(bar integer)")
cur.execute("insert into foo(bar) values (5)")
cur.execute(SELECT)
def test_bind_mutating_list(self):
# Issue41662: Crash when mutate a list of parameters during iteration.
@ -435,6 +436,40 @@ class RegressionTests(unittest.TestCase):
val = cur.fetchone()[0]
self.assertEqual(val, b'')
def test_table_lock_cursor_replace_stmt(self):
con = sqlite.connect(":memory:")
cur = con.cursor()
cur.execute("create table t(t)")
cur.executemany("insert into t values(?)", ((v,) for v in range(5)))
con.commit()
cur.execute("select t from t")
cur.execute("drop table t")
con.commit()
def test_table_lock_cursor_dealloc(self):
con = sqlite.connect(":memory:")
con.execute("create table t(t)")
con.executemany("insert into t values(?)", ((v,) for v in range(5)))
con.commit()
cur = con.execute("select t from t")
del cur
con.execute("drop table t")
con.commit()
def test_table_lock_cursor_non_readonly_select(self):
con = sqlite.connect(":memory:")
con.execute("create table t(t)")
con.executemany("insert into t values(?)", ((v,) for v in range(5)))
con.commit()
def dup(v):
con.execute("insert into t values(?)", (v,))
return
con.create_function("dup", 1, dup)
cur = con.execute("select dup(t) from t")
del cur
con.execute("drop table t")
con.commit()
if __name__ == "__main__":
unittest.main()