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from random import random
import pytest
import psycopg
from psycopg import sql
from psycopg.pq import Format
from .acompat import alist
from .test_sql import no_e
from .test_adapt import make_dumper
vstr = "hello"
vint = 16
async def test_connection_no_params(aconn):
with pytest.raises(TypeError):
await aconn.execute(t"select 1", []) # noqa: F542
async def test_cursor_no_params(aconn):
cur = aconn.cursor()
with pytest.raises(TypeError):
await cur.execute(t"select 1", []) # noqa: F542
async def test_connection_execute(aconn):
cur = await aconn.execute(t"select {vstr}")
assert await cur.fetchone() == ("hello",)
assert cur._query.query == b"select $1"
assert cur._query.params == [b"hello"]
assert cur._query.types == (0,)
@pytest.mark.parametrize(
"t", [t"select {vstr!a}", t"select {vstr!r}", t"select {vstr!s}"]
)
async def test_no_conversion(aconn, t):
with pytest.raises(TypeError):
await aconn.execute(t)
@pytest.mark.parametrize(
"t, fmt",
[
(t"select {vint}", Format.BINARY),
(t"select {vint:s}", Format.BINARY),
(t"select {vint:t}", Format.TEXT),
(t"select {vint:b}", Format.BINARY),
],
)
async def test_format(aconn, t, fmt):
cur = await aconn.execute(t)
assert await cur.fetchone() == (16,)
assert cur._query.query == b"select $1"
assert cur._query.types == (psycopg.adapters.types["smallint"].oid,)
assert cur._query.params == [b"\x00\x10" if fmt == Format.BINARY else b"16"]
assert cur._query.formats == [fmt]
async def test_format_bad(aconn):
with pytest.raises(psycopg.ProgrammingError, match="format 'x' not supported"):
await aconn.execute(t"select {vint:x}")
async def test_expression(aconn):
cur = await aconn.execute(t"select {vint * 2}")
assert await cur.fetchone() == (32,)
assert cur._query.query == b"select $1"
assert cur._query.types == (psycopg.adapters.types["smallint"].oid,)
assert cur._query.params == [b"\x00\x20"]
assert cur._query.formats == [Format.BINARY]
async def test_format_identifier(aconn):
f1 = "foo-bar"
f2 = "baz"
cur = await aconn.execute(t"select {vint} as {f1:i}, {vint * 2:t} as {f2:i}")
assert await cur.fetchone() == (16, 32)
assert cur._query.query == b'select $1 as "foo-bar", $2 as "baz"'
assert cur._query.types == (psycopg.adapters.types["smallint"].oid,) * 2
assert cur._query.params == [b"\x00\x10", b"32"]
assert cur._query.formats == [Format.BINARY, Format.TEXT]
async def test_format_literal(aconn):
f1 = "foo-bar"
f2 = "baz"
cur = await aconn.execute(t"select {vint * 2:l} as {f1:i}, {vint:t} as {f2:i}")
assert await cur.fetchone() == (32, 16)
assert cur._query.query == b'select 32 as "foo-bar", $1 as "baz"'
assert cur._query.types == (psycopg.adapters.types["smallint"].oid,)
assert cur._query.params == [b"16"]
assert cur._query.formats == [Format.TEXT]
async def test_nested(aconn):
part = t"{vint} as foo"
cur = await aconn.execute(t"select {part:q}")
assert await cur.fetchone() == (16,)
assert cur._query.query == b"select $1 as foo"
assert cur._query.types == (psycopg.adapters.types["smallint"].oid,)
assert cur._query.params == [b"\x00\x10"]
assert cur._query.formats == [Format.BINARY]
with pytest.raises(psycopg.ProgrammingError, match="Template.*':q'"):
cur = await aconn.execute(t"select {part}")
async def test_scope(aconn):
t = t"select " # noqa: F542
for i, name in enumerate(("foo", "bar", "baz")):
if i:
t += t", " # noqa: F542
t += t"{i} as {name:i}"
cur = await aconn.execute(t)
assert await cur.fetchone() == (0, 1, 2)
assert cur.description[0].name == "foo"
assert cur.description[2].name == "baz"
async def test_no_reuse(aconn):
t = t"select {vint}, {vint}"
cur = await aconn.execute(t)
assert await cur.fetchone() == (vint, vint)
assert b"$2" in cur._query.query
async def test_volatile(aconn):
t = t"select {random()}, {random()}"
cur = await aconn.execute(t)
rec = await cur.fetchone()
assert rec[0] != rec[1]
assert b"$2" in cur._query.query
async def test_sql(aconn):
part = sql.SQL("foo")
cur = await aconn.execute(t"select {vint} as {part:q}")
assert await cur.fetchone() == (16,)
assert cur._query.query == b"select $1 as foo"
with pytest.raises(psycopg.ProgrammingError, match=r"sql\.SQL.*':q'"):
await aconn.execute(t"select {vint} as {part:i}")
async def test_sql_composed(aconn):
part = sql.SQL("{} as {}").format(vint, sql.Identifier("foo"))
cur = await aconn.execute(t"select {part:q}")
assert await cur.fetchone() == (16,)
assert cur._query.query == b'select 16 as "foo"'
with pytest.raises(psycopg.ProgrammingError, match=r"sql\.Composed.*':q'"):
await aconn.execute(t"select {part}")
async def test_sql_identifier(aconn):
part = sql.Identifier("foo")
cur = await aconn.execute(t"select {vint} as {part:i}")
assert await cur.fetchone() == (16,)
assert cur._query.query == b'select $1 as "foo"'
with pytest.raises(psycopg.ProgrammingError, match=r"sql\.Identifier.*':i'"):
await aconn.execute(t"select {vint} as {part}")
async def test_sql_literal(aconn):
lit = sql.Literal(42)
cur = await aconn.execute(t"select {lit:l} as foo")
assert await cur.fetchone() == (42,)
assert cur._query.query == b'select 42 as foo'
with pytest.raises(psycopg.ProgrammingError, match=r"sql\.Literal.*':l'"):
await aconn.execute(t"select {lit} as foo")
async def test_sql_placeholder(aconn):
part = sql.Placeholder("foo")
with pytest.raises(psycopg.ProgrammingError, match="Placeholder not supported"):
await aconn.execute(t"select {part}")
@pytest.mark.xfail(reason="Template.join() needed")
async def test_template_join(aconn):
ts = [t"{i} as {name:i}" for i, name in enumerate(("foo", "bar", "baz"))]
fields = t','.join(ts) # noqa: F542
cur = await aconn.execute(t"select {fields}")
assert await cur.fetchone() == (0, 1, 2)
assert cur.description[0].name == "foo"
assert cur.description[2].name == "baz"
async def test_sql_join(aconn):
ts = [t"{i} as {name:i}" for i, name in enumerate(("foo", "bar", "baz"))]
fields = sql.SQL(',').join(ts)
cur = await aconn.execute(t"select {fields:q}")
assert await cur.fetchone() == (0, 1, 2)
assert cur.description[0].name == "foo"
assert cur.description[2].name == "baz"
async def test_copy(aconn):
cur = aconn.cursor()
async with cur.copy(
t"copy (select * from generate_series(1, {3})) to stdout"
) as copy:
data = await alist(copy.rows())
assert data == [("1",), ("2",), ("3",)]
async def test_client_cursor(aconn):
cur = psycopg.AsyncClientCursor(aconn)
await cur.execute(t"select {vint}, {vstr} as {vstr:i}")
assert await cur.fetchone() == (vint, vstr)
assert cur.description[1].name == vstr
assert str(vint) in cur._query.query.decode()
assert str(vint) == cur._query.params[0].decode()
assert f"'{vstr}'" in cur._query.query.decode()
assert f"'{vstr}'" in cur._query.params[1].decode()
async def test_mogrify(aconn):
cur = psycopg.AsyncClientCursor(aconn)
res = cur.mogrify(t"select {vint}, {vstr} as {vstr:i}")
assert res == "select 16, 'hello' as \"hello\""
async def test_raw_cursor(aconn):
cur = psycopg.AsyncRawCursor(aconn)
with pytest.raises(psycopg.NotSupportedError):
await cur.execute(t"select {vint}, {vstr} as {vstr:i}")
async def test_server_cursor(aconn):
async with psycopg.AsyncServerCursor(aconn, "test") as cur:
await cur.execute(t"select {vint}, {vstr} as {vstr:i}")
assert await cur.fetchone() == (vint, vstr)
assert cur.description[1].name == vstr
assert b"$2" in cur._query.query
assert b"$3" not in cur._query.query
def test_as_string():
query = sql.as_string(t"select {vstr}")
assert query == no_e("select 'hello'")
async def test_as_string_context(aconn):
aconn.adapters.register_dumper(str, make_dumper("1"))
query = sql.as_string(t"select {vstr}", context=aconn)
assert query == no_e("select 'hello1'")
def test_as_bytes():
query = sql.as_bytes(t"select {vstr}")
assert query == no_e(b"select 'hello'")
async def test_as_bytes_context(aconn):
aconn.adapters.register_dumper(str, make_dumper("1"))
query = sql.as_bytes(t"select {vstr}", context=aconn)
assert query == no_e(b"select 'hello1'")
|
