def test_array_dumper(conn, fmt_out):
t = Transformer(conn)
fmt_in = Format.from_pq(fmt_out)
dint = t.get_dumper([0], fmt_in)
assert dint.oid == builtins["int2"].array_oid
assert dint.sub_dumper.oid == builtins["int2"].oid
dstr = t.get_dumper([""], fmt_in)
if fmt_in == Format.BINARY:
assert dstr.oid == builtins["text"].array_oid
assert dstr.sub_dumper.oid == builtins["text"].oid
else:
assert dstr.oid == 0
assert dstr.sub_dumper.oid == 0
assert dstr is not dint
assert t.get_dumper([1], fmt_in) is dint
assert t.get_dumper([None, [1]], fmt_in) is dint
dempty = t.get_dumper([], fmt_in)
assert t.get_dumper([None, [None]], fmt_in) is dempty
assert dempty.oid == 0
assert dempty.dump([]) == b"{}"
L = []
L.append(L)
with pytest.raises(psycopg3.DataError):
assert t.get_dumper(L, fmt_in)
async def test_copy_to_leaks(dsn, faker, fmt, method):
faker.format = PgFormat.from_pq(fmt)
faker.choose_schema(ncols=20)
faker.make_records(20)
n = []
for i in range(3):
async with await psycopg3.AsyncConnection.connect(dsn) as conn:
async with conn.cursor(binary=fmt) as cur:
await cur.execute(faker.drop_stmt)
await cur.execute(faker.create_stmt)
await cur.executemany(faker.insert_stmt, faker.records)
stmt = sql.SQL(
"copy (select {} from {} order by id) to stdout (format {})"
).format(
sql.SQL(", ").join(faker.fields_names),
faker.table_name,
sql.SQL(fmt.name),
)
async with cur.copy(stmt) as copy:
types = [
t.as_string(conn).replace('"', "")
for t in faker.types_names
]
copy.set_types(types)
if method == "read":
while 1:
tmp = await copy.read()
if not tmp:
break
elif method == "iter":
async for x in copy:
pass
elif method == "row":
while 1:
tmp = await copy.read_row()
if tmp is None:
break
elif method == "rows":
async for x in copy.rows():
pass
tmp = None
del cur, conn
gc.collect()
gc.collect()
n.append(len(gc.get_objects()))
assert (
n[0] == n[1] == n[2]
), f"objects leaked: {n[1] - n[0]}, {n[2] - n[1]}"
async def test_copy_from_leaks(dsn, faker, fmt):
faker.format = PgFormat.from_pq(fmt)
faker.choose_schema(ncols=20)
faker.make_records(20)
n = []
for i in range(3):
async with await psycopg3.AsyncConnection.connect(dsn) as conn:
async with conn.cursor(binary=fmt) as cur:
await cur.execute(faker.drop_stmt)
await cur.execute(faker.create_stmt)
stmt = sql.SQL("copy {} ({}) from stdin (format {})").format(
faker.table_name,
sql.SQL(", ").join(faker.fields_names),
sql.SQL(fmt.name),
)
async with cur.copy(stmt) as copy:
for row in faker.records:
await copy.write_row(row)
await cur.execute(faker.select_stmt)
recs = await cur.fetchall()
for got, want in zip(recs, faker.records):
faker.assert_record(got, want)
del recs
del cur, conn
gc.collect()
gc.collect()
n.append(len(gc.get_objects()))
assert (
n[0] == n[1] == n[2]
), f"objects leaked: {n[1] - n[0]}, {n[2] - n[1]}"