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#!/usr/bin/env python3
import pytest
import psycopg
from psycopg import pq
def test_exec_none(pgconn):
with pytest.raises(TypeError):
pgconn.exec_(None)
def test_exec(pgconn):
res = pgconn.exec_(b"select 'hel' || 'lo'")
assert res.get_value(0, 0) == b"hello"
pgconn.finish()
with pytest.raises(psycopg.OperationalError):
pgconn.exec_(b"select 'hello'")
def test_exec_params(pgconn):
res = pgconn.exec_params(b"select $1::int + $2", [b"5", b"3"])
assert res.status == pq.ExecStatus.TUPLES_OK
assert res.get_value(0, 0) == b"8"
pgconn.finish()
with pytest.raises(psycopg.OperationalError):
pgconn.exec_params(b"select $1::int + $2", [b"5", b"3"])
def test_exec_params_empty(pgconn):
res = pgconn.exec_params(b"select 8::int", [])
assert res.status == pq.ExecStatus.TUPLES_OK
assert res.get_value(0, 0) == b"8"
def test_exec_params_types(pgconn):
res = pgconn.exec_params(b"select $1, $2", [b"8", b"8"], [1700, 23])
assert res.status == pq.ExecStatus.TUPLES_OK
assert res.get_value(0, 0) == b"8"
assert res.ftype(0) == 1700
assert res.get_value(0, 1) == b"8"
assert res.ftype(1) == 23
with pytest.raises(ValueError):
pgconn.exec_params(b"select $1, $2", [b"8", b"8"], [1700])
def test_exec_params_nulls(pgconn):
res = pgconn.exec_params(b"select $1::text, $2::text, $3::text", [b"hi", b"", None])
assert res.status == pq.ExecStatus.TUPLES_OK
assert res.get_value(0, 0) == b"hi"
assert res.get_value(0, 1) == b""
assert res.get_value(0, 2) is None
def test_exec_params_binary_in(pgconn):
val = b"foo\00bar"
res = pgconn.exec_params(
b"select length($1::bytea), length($2::bytea)",
[val, val],
param_formats=[0, 1],
)
assert res.status == pq.ExecStatus.TUPLES_OK
assert res.get_value(0, 0) == b"3"
assert res.get_value(0, 1) == b"7"
with pytest.raises(ValueError):
pgconn.exec_params(b"select $1::bytea", [val], param_formats=[1, 1])
@pytest.mark.parametrize("fmt, out", [(0, b"\\x666f6f00626172"), (1, b"foo\00bar")])
def test_exec_params_binary_out(pgconn, fmt, out):
val = b"foo\00bar"
res = pgconn.exec_params(
b"select $1::bytea", [val], param_formats=[1], result_format=fmt
)
assert res.status == pq.ExecStatus.TUPLES_OK
assert res.get_value(0, 0) == out
def test_prepare(pgconn):
res = pgconn.prepare(b"prep", b"select $1::int + $2::int")
assert res.status == pq.ExecStatus.COMMAND_OK, res.error_message
res = pgconn.exec_prepared(b"prep", [b"3", b"5"])
assert res.get_value(0, 0) == b"8"
pgconn.finish()
with pytest.raises(psycopg.OperationalError):
pgconn.prepare(b"prep", b"select $1::int + $2::int")
with pytest.raises(psycopg.OperationalError):
pgconn.exec_prepared(b"prep", [b"3", b"5"])
def test_prepare_types(pgconn):
res = pgconn.prepare(b"prep", b"select $1 + $2", [23, 23])
assert res.status == pq.ExecStatus.COMMAND_OK, res.error_message
res = pgconn.exec_prepared(b"prep", [b"3", b"5"])
assert res.get_value(0, 0) == b"8"
def test_exec_prepared_binary_in(pgconn):
val = b"foo\00bar"
res = pgconn.prepare(b"", b"select length($1::bytea), length($2::bytea)")
assert res.status == pq.ExecStatus.COMMAND_OK, res.error_message
res = pgconn.exec_prepared(b"", [val, val], param_formats=[0, 1])
assert res.status == pq.ExecStatus.TUPLES_OK
assert res.get_value(0, 0) == b"3"
assert res.get_value(0, 1) == b"7"
with pytest.raises(ValueError):
pgconn.exec_params(b"select $1::bytea", [val], param_formats=[1, 1])
@pytest.mark.parametrize("fmt, out", [(0, b"\\x666f6f00626172"), (1, b"foo\00bar")])
def test_exec_prepared_binary_out(pgconn, fmt, out):
val = b"foo\00bar"
res = pgconn.prepare(b"", b"select $1::bytea")
assert res.status == pq.ExecStatus.COMMAND_OK, res.error_message
res = pgconn.exec_prepared(b"", [val], param_formats=[1], result_format=fmt)
assert res.status == pq.ExecStatus.TUPLES_OK
assert res.get_value(0, 0) == out
@pytest.mark.crdb_skip("server-side cursor")
def test_describe_portal(pgconn):
res = pgconn.exec_(
b"""
begin;
declare cur cursor for select * from generate_series(1,10) foo;
"""
)
assert res.status == pq.ExecStatus.COMMAND_OK, res.error_message
res = pgconn.describe_portal(b"cur")
assert res.status == pq.ExecStatus.COMMAND_OK, res.error_message
assert res.nfields == 1
assert res.fname(0) == b"foo"
pgconn.finish()
with pytest.raises(psycopg.OperationalError):
pgconn.describe_portal(b"cur")
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