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import pytest
import psycopg
from psycopg import pq
from ..fix_crdb import crdb_scs_off
@pytest.mark.parametrize(
"data, want",
[
(b"", b"''"),
(b"hello", b"'hello'"),
(b"foo'bar", b"'foo''bar'"),
(b"foo\\bar", b" E'foo\\\\bar'"),
],
)
def test_escape_literal(pgconn, data, want):
esc = pq.Escaping(pgconn)
out = esc.escape_literal(data)
assert out == want
@pytest.mark.parametrize("scs", ["on", crdb_scs_off("off")])
def test_escape_literal_1char(pgconn, scs):
res = pgconn.exec_(f"set standard_conforming_strings to {scs}".encode("ascii"))
assert res.status == pq.ExecStatus.COMMAND_OK
esc = pq.Escaping(pgconn)
special = {b"'": b"''''", b"\\": b" E'\\\\'"}
for c in range(1, 128):
data = bytes([c])
rv = esc.escape_literal(data)
exp = special.get(data) or b"'%s'" % data
assert rv == exp
def test_escape_literal_noconn(pgconn):
esc = pq.Escaping()
with pytest.raises(psycopg.OperationalError):
esc.escape_literal(b"hi")
esc = pq.Escaping(pgconn)
pgconn.finish()
with pytest.raises(psycopg.OperationalError):
esc.escape_literal(b"hi")
@pytest.mark.parametrize(
"data, want",
[
(b"", b'""'),
(b"hello", b'"hello"'),
(b'foo"bar', b'"foo""bar"'),
(b"foo\\bar", b'"foo\\bar"'),
],
)
def test_escape_identifier(pgconn, data, want):
esc = pq.Escaping(pgconn)
out = esc.escape_identifier(data)
assert out == want
@pytest.mark.parametrize("scs", ["on", crdb_scs_off("off")])
def test_escape_identifier_1char(pgconn, scs):
res = pgconn.exec_(f"set standard_conforming_strings to {scs}".encode("ascii"))
assert res.status == pq.ExecStatus.COMMAND_OK
esc = pq.Escaping(pgconn)
special = {b'"': b'""""', b"\\": b'"\\"'}
for c in range(1, 128):
data = bytes([c])
rv = esc.escape_identifier(data)
exp = special.get(data) or b'"%s"' % data
assert rv == exp
def test_escape_identifier_noconn(pgconn):
esc = pq.Escaping()
with pytest.raises(psycopg.OperationalError):
esc.escape_identifier(b"hi")
esc = pq.Escaping(pgconn)
pgconn.finish()
with pytest.raises(psycopg.OperationalError):
esc.escape_identifier(b"hi")
@pytest.mark.parametrize(
"data, want",
[
(b"", b""),
(b"hello", b"hello"),
(b"foo'bar", b"foo''bar"),
(b"foo\\bar", b"foo\\bar"),
],
)
def test_escape_string(pgconn, data, want):
esc = pq.Escaping(pgconn)
out = esc.escape_string(data)
assert out == want
@pytest.mark.parametrize("scs", ["on", crdb_scs_off("off")])
def test_escape_string_1char(pgconn, scs):
esc = pq.Escaping(pgconn)
res = pgconn.exec_(f"set standard_conforming_strings to {scs}".encode("ascii"))
assert res.status == pq.ExecStatus.COMMAND_OK
special = {b"'": b"''", b"\\": b"\\" if scs == "on" else b"\\\\"}
for c in range(1, 128):
data = bytes([c])
rv = esc.escape_string(data)
exp = special.get(data) or b"%s" % data
assert rv == exp
@pytest.mark.parametrize(
"data, want",
[
(b"", b""),
(b"hello", b"hello"),
(b"foo'bar", b"foo''bar"),
# This libpq function behaves unpredictably when not passed a conn
(b"foo\\bar", (b"foo\\\\bar", b"foo\\bar")),
],
)
def test_escape_string_noconn(data, want):
esc = pq.Escaping()
out = esc.escape_string(data)
if isinstance(want, bytes):
assert out == want
else:
assert out in want
def test_escape_string_badconn(pgconn):
esc = pq.Escaping(pgconn)
pgconn.finish()
with pytest.raises(psycopg.OperationalError):
esc.escape_string(b"hi")
def test_escape_string_badenc(pgconn):
res = pgconn.exec_(b"set client_encoding to 'UTF8'")
assert res.status == pq.ExecStatus.COMMAND_OK
data = "\u20ac".encode()[:-1]
esc = pq.Escaping(pgconn)
with pytest.raises(psycopg.OperationalError):
esc.escape_string(data)
@pytest.mark.parametrize("data", [b"hello\00world", b"\00\00\00\00"])
def test_escape_bytea(pgconn, data):
exp = rb"\x" + b"".join(b"%02x" % c for c in data)
esc = pq.Escaping(pgconn)
rv = esc.escape_bytea(data)
assert rv == exp
pgconn.finish()
with pytest.raises(psycopg.OperationalError):
esc.escape_bytea(data)
def test_escape_noconn(pgconn):
data = bytes(range(256))
esc = pq.Escaping()
escdata = esc.escape_bytea(data)
res = pgconn.exec_params(b"select '%s'::bytea" % escdata, [], result_format=1)
assert res.status == pq.ExecStatus.TUPLES_OK
assert res.get_value(0, 0) == data
def test_escape_1char(pgconn):
esc = pq.Escaping(pgconn)
for c in range(256):
rv = esc.escape_bytea(bytes([c]))
exp = rb"\x%02x" % c
assert rv == exp
@pytest.mark.parametrize("data", [b"hello\00world", b"\00\00\00\00"])
def test_unescape_bytea(pgconn, data):
enc = rb"\x" + b"".join(b"%02x" % c for c in data)
esc = pq.Escaping(pgconn)
rv = esc.unescape_bytea(enc)
assert rv == data
pgconn.finish()
with pytest.raises(psycopg.OperationalError):
esc.unescape_bytea(data)
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