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|
import json
import logging
from copy import deepcopy
from typing import Any
import pytest
import psycopg.types
from psycopg import pq, sql
from psycopg.adapt import PyFormat
from psycopg.types.json import set_json_dumps, set_json_loads
samples = [
"null",
"true",
'"te\'xt"',
'"\\u00e0\\u20ac"',
"123",
"123.45",
'["a", 100]',
'{"a": 100}',
]
@pytest.mark.parametrize("wrapper", ["Json", "Jsonb"])
@pytest.mark.parametrize("fmt_in", PyFormat)
def test_wrapper_regtype(conn, wrapper, fmt_in):
wrapper = getattr(psycopg.types.json, wrapper)
cur = conn.cursor()
cur.execute(
f"select pg_typeof(%{fmt_in.value})::regtype = %s::regtype",
(wrapper([]), wrapper.__name__.lower()),
)
assert cur.fetchone()[0] is True
@pytest.mark.parametrize("val", samples)
@pytest.mark.parametrize("wrapper", ["Json", "Jsonb"])
@pytest.mark.parametrize("fmt_in", PyFormat)
def test_dump(conn, val, wrapper, fmt_in):
wrapper = getattr(psycopg.types.json, wrapper)
obj = json.loads(val)
cur = conn.cursor()
cur.execute(
f"select %{fmt_in.value}::text = %s::{wrapper.__name__.lower()}::text",
(wrapper(obj), val),
)
assert cur.fetchone()[0] is True
@pytest.mark.parametrize(
"fmt_in, pgtype, dumper_name",
[
("t", "json", "JsonDumper"),
("b", "json", "JsonBinaryDumper"),
("t", "jsonb", "JsonbDumper"),
("b", "jsonb", "JsonbBinaryDumper"),
],
)
def test_dump_dict(conn, fmt_in, pgtype, dumper_name):
obj = {"foo": "bar"}
cur = conn.cursor()
dumper = getattr(psycopg.types.json, dumper_name)
# Skip json on CRDB as the oid doesn't exist.
try:
conn.adapters.types[dumper.oid]
except KeyError:
pytest.skip(
f"{type(conn).__name__} doesn't have the oid {dumper.oid}"
f" used by {dumper.__name__}"
)
cur.adapters.register_dumper(dict, dumper)
cur.execute(f"select %{fmt_in}", (obj,))
assert cur.fetchone()[0] == obj
assert cur.description[0].type_code == conn.adapters.types[pgtype].oid
@pytest.mark.crdb_skip("json array")
@pytest.mark.parametrize("val", samples)
@pytest.mark.parametrize("wrapper", ["Json", "Jsonb"])
@pytest.mark.parametrize("fmt_in", PyFormat)
def test_array_dump(conn, val, wrapper, fmt_in):
wrapper = getattr(psycopg.types.json, wrapper)
obj = json.loads(val)
cur = conn.cursor()
cur.execute(
f"select %{fmt_in.value}::text = array[%s::{wrapper.__name__.lower()}]::text",
([wrapper(obj)], val),
)
assert cur.fetchone()[0] is True
@pytest.mark.parametrize("val", samples)
@pytest.mark.parametrize("jtype", ["json", "jsonb"])
@pytest.mark.parametrize("fmt_out", pq.Format)
def test_load(conn, val, jtype, fmt_out):
cur = conn.cursor(binary=fmt_out)
cur.execute(f"select %s::{jtype}", (val,))
assert cur.fetchone()[0] == json.loads(val)
@pytest.mark.crdb_skip("json array")
@pytest.mark.parametrize("val", samples)
@pytest.mark.parametrize("jtype", ["json", "jsonb"])
@pytest.mark.parametrize("fmt_out", pq.Format)
def test_load_array(conn, val, jtype, fmt_out):
cur = conn.cursor(binary=fmt_out)
cur.execute(f"select array[%s::{jtype}]", (val,))
assert cur.fetchone()[0] == [json.loads(val)]
@pytest.mark.crdb_skip("copy")
@pytest.mark.parametrize("val", samples)
@pytest.mark.parametrize("jtype", ["json", "jsonb"])
@pytest.mark.parametrize("fmt_out", pq.Format)
def test_load_copy(conn, val, jtype, fmt_out):
cur = conn.cursor()
stmt = sql.SQL("copy (select {}::{}) to stdout (format {})").format(
val, sql.Identifier(jtype), sql.SQL(fmt_out.name)
)
with cur.copy(stmt) as copy:
copy.set_types([jtype])
(got,) = copy.read_row()
assert got == json.loads(val)
@pytest.mark.parametrize("fmt_in", PyFormat)
@pytest.mark.parametrize("wrapper", ["Json", "Jsonb"])
def test_dump_customise(conn, wrapper, fmt_in):
wrapper = getattr(psycopg.types.json, wrapper)
obj = {"foo": "bar"}
cur = conn.cursor()
set_json_dumps(my_dumps)
try:
cur.execute(f"select %{fmt_in.value}->>'baz' = 'qux'", (wrapper(obj),))
assert cur.fetchone()[0] is True
finally:
set_json_dumps(json.dumps)
@pytest.mark.parametrize("fmt_in", PyFormat)
@pytest.mark.parametrize("wrapper", ["Json", "Jsonb"])
def test_dump_customise_bytes(conn, wrapper, fmt_in):
wrapper = getattr(psycopg.types.json, wrapper)
obj = {"foo": "bar"}
cur = conn.cursor()
set_json_dumps(my_dumps_bytes)
try:
cur.execute(f"select %{fmt_in.value}->>'baz' = 'qux'", (wrapper(obj),))
assert cur.fetchone()[0] is True
finally:
set_json_dumps(json.dumps)
@pytest.mark.parametrize("fmt_in", PyFormat)
@pytest.mark.parametrize("wrapper", ["Json", "Jsonb"])
def test_dump_customise_context(conn, wrapper, fmt_in):
wrapper = getattr(psycopg.types.json, wrapper)
obj = {"foo": "bar"}
cur1 = conn.cursor()
cur2 = conn.cursor()
set_json_dumps(my_dumps, cur2)
cur1.execute(f"select %{fmt_in.value}->>'baz'", (wrapper(obj),))
assert cur1.fetchone()[0] is None
cur2.execute(f"select %{fmt_in.value}->>'baz'", (wrapper(obj),))
assert cur2.fetchone()[0] == "qux"
@pytest.mark.parametrize("fmt_in", PyFormat)
@pytest.mark.parametrize("wrapper", ["Json", "Jsonb"])
def test_dump_customise_wrapper(conn, wrapper, fmt_in):
wrapper = getattr(psycopg.types.json, wrapper)
obj = {"foo": "bar"}
cur = conn.cursor()
cur.execute(f"select %{fmt_in.value}->>'baz' = 'qux'", (wrapper(obj, my_dumps),))
assert cur.fetchone()[0] is True
@pytest.mark.parametrize("binary", [True, False])
@pytest.mark.parametrize("pgtype", ["json", "jsonb"])
def test_load_customise(conn, binary, pgtype):
cur = conn.cursor(binary=binary)
set_json_loads(my_loads)
try:
cur.execute(f"""select '{{"foo": "bar"}}'::{pgtype}""")
obj = cur.fetchone()[0]
assert obj["foo"] == "bar"
assert obj["answer"] == 42
finally:
set_json_loads(json.loads)
@pytest.mark.parametrize("binary", [True, False])
@pytest.mark.parametrize("pgtype", ["json", "jsonb"])
def test_load_customise_context(conn, binary, pgtype):
cur1 = conn.cursor(binary=binary)
cur2 = conn.cursor(binary=binary)
set_json_loads(my_loads, cur2)
cur1.execute(f"""select '{{"foo": "bar"}}'::{pgtype}""")
got = cur1.fetchone()[0]
assert got["foo"] == "bar"
assert "answer" not in got
cur2.execute(f"""select '{{"foo": "bar"}}'::{pgtype}""")
got = cur2.fetchone()[0]
assert got["foo"] == "bar"
assert got["answer"] == 42
@pytest.mark.parametrize("binary", [True, False])
@pytest.mark.parametrize("pgtype", ["json", "jsonb"])
def test_dump_leak_with_local_functions(dsn, binary, pgtype, caplog):
caplog.set_level(logging.WARNING, logger="psycopg")
# Note: private implementation, it might change
from psycopg.types.json import _dumpers_cache
# A function with no closure is cached on the code, so lambdas are not
# different items.
def register(conn: psycopg.Connection) -> None:
set_json_dumps(lambda x: json.dumps(x), conn)
with psycopg.connect(dsn) as conn1:
register(conn1)
assert (size1 := len(_dumpers_cache))
with psycopg.connect(dsn) as conn2:
register(conn2)
size2 = len(_dumpers_cache)
assert size1 == size2
assert not caplog.records
# A function with a closure won't be cached, but will cause a warning
def register2(conn: psycopg.Connection, skipkeys: bool) -> None:
def f(x: Any) -> str:
return json.dumps(x, skipkeys=skipkeys)
set_json_dumps(f, conn)
with psycopg.connect(dsn) as conn3:
register2(conn3, False)
size3 = len(_dumpers_cache)
assert size2 == size3
assert caplog.records
@pytest.mark.parametrize("binary", [True, False])
@pytest.mark.parametrize("pgtype", ["json", "jsonb"])
@pytest.mark.parametrize("dumps", [str, len])
def test_dumper_warning_builtin(dsn, binary, pgtype, dumps, caplog, recwarn):
caplog.set_level(logging.WARNING, logger="psycopg")
recwarn.clear()
# Note: private implementation, it might change
from psycopg.types.json import _dumpers_cache
# A function with no closure is cached on the code, so lambdas are not
# different items.
with psycopg.connect(dsn) as conn1:
set_json_dumps(dumps, conn1)
assert not recwarn
assert (size1 := len(_dumpers_cache))
with psycopg.connect(dsn) as conn2:
set_json_dumps(dumps, conn2)
size2 = len(_dumpers_cache)
assert size1 == size2
assert not caplog.records
assert not recwarn
@pytest.mark.parametrize("binary", [True, False])
@pytest.mark.parametrize("pgtype", ["json", "jsonb"])
def test_load_leak_with_local_functions(dsn, binary, pgtype, caplog):
caplog.set_level(logging.WARNING, logger="psycopg")
# Note: private implementation, it might change
from psycopg.types.json import _loaders_cache
# A function with no closure is cached on the code, so lambdas are not
# different items.
def register(conn: psycopg.Connection) -> None:
def f(x: str | bytes) -> Any:
return json.loads(x)
set_json_loads(f, conn)
with psycopg.connect(dsn) as conn1:
register(conn1)
assert (size1 := len(_loaders_cache))
with psycopg.connect(dsn) as conn2:
register(conn2)
size2 = len(_loaders_cache)
assert size1 == size2
assert not caplog.records
# A function with a closure won't be cached, but will cause a warning
def register2(conn: psycopg.Connection, parse_float: Any) -> None:
set_json_dumps(lambda x: json.dumps(x, parse_float=parse_float), conn)
with psycopg.connect(dsn) as conn3:
register2(conn3, None)
size3 = len(_loaders_cache)
assert size2 == size3
assert caplog.records
@pytest.mark.parametrize("binary", [True, False])
@pytest.mark.parametrize("pgtype", ["json", "jsonb"])
@pytest.mark.parametrize("loads", [str, len])
def test_loader_warning_builtin(dsn, binary, pgtype, loads, caplog, recwarn):
caplog.set_level(logging.WARNING, logger="psycopg")
recwarn.clear()
# Note: private implementation, it might change
from psycopg.types.json import _loaders_cache
# A function with no closure is cached on the code, so lambdas are not
# different items.
with psycopg.connect(dsn) as conn1:
set_json_loads(loads, conn1)
assert not recwarn
assert (size1 := len(_loaders_cache))
with psycopg.connect(dsn) as conn2:
set_json_loads(loads, conn2)
size2 = len(_loaders_cache)
assert size1 == size2
assert not caplog.records
assert not recwarn
def my_dumps(obj):
obj = deepcopy(obj)
obj["baz"] = "qux"
return json.dumps(obj)
def my_dumps_bytes(obj):
obj = deepcopy(obj)
obj["baz"] = "qux"
return json.dumps(obj).encode()
def my_loads(data):
obj = json.loads(data)
obj["answer"] = 42
return obj
|
