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bpo-44958: Fix ref. leak introduced in GH-27844 by erlend-aasland · Pull Request #28490 · python/cpython · GitHub

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bpo-44958: Fix ref. leak introduced in GH-27844 #28490

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Merged
miss-islington merged 2 commits into from
Sep 21, 2021
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bpo-44958: Fix ref. leak introduced in GH-27844 #28490

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7342276
bpo-44958: Fix ref. leak in test_table_lock_cursor_non_readonly_select()
Sep 21, 2021
24e0e12
bpo-44958: Fix ref. leak in test_table_lock_cursor_non_readonly_select()
Sep 21, 2021
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5 changes: 3 additions & 2 deletions Lib/sqlite3/test/test_dbapi.py
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Original file line number Diff line number Diff line change
Expand Up @@ -38,13 +38,14 @@

# Helper for tests using TESTFN
@contextlib.contextmanager
def managed_connect(*args, **kwargs):
def managed_connect(*args, in_mem=False, **kwargs):
cx = sqlite.connect(*args, **kwargs)
try:
yield cx
finally:
cx.close()
unlink(TESTFN)
if not in_mem:
unlink(TESTFN)


class ModuleTests(unittest.TestCase):
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61 changes: 33 additions & 28 deletions Lib/sqlite3/test/test_regression.py
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,8 @@
import functools
from test import support

from .test_dbapi import managed_connect

class RegressionTests(unittest.TestCase):
def setUp(self):
self.con = sqlite.connect(":memory:")
Expand Down Expand Up @@ -437,38 +439,41 @@ def test_return_empty_bytestring(self):
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()
with managed_connect(":memory:", in_mem=True) as con:
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()
with managed_connect(":memory:", in_mem=True) as con:
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()
with managed_connect(":memory:", in_mem=True) as con:
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__":
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