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"""
uv run pytest --benchmark-columns=mean,stddev,iqr
"""
from decimal import Decimal
from datetime import date
from typing import Generator
import psycopg
from psycopg import Connection
from psycopg.abc import ConnectionType
from pytest_benchmark.fixture import BenchmarkFixture
import pytest
@pytest.fixture(scope="module")
def conn() -> Generator[Connection]:
with psycopg.connect(
dbname="postgres", user="postgres", password="", host="127.0.0.1", port="5432"
) as connection:
yield connection
BASE_QUERY = """SELECT accommodation_id, {} AS daily_configs
FROM overrides
WHERE '[2025-07-01,2025-08-01)'::daterange @> date
GROUP BY overrides.accommodation_id"""
COMPOSITE_QUERY = BASE_QUERY.format("array_agg((date, price))")
JSON_OBJECT_EXPR = "json_agg(json_build_object('date', date, 'price', price::text))"
JSONB_OBJECT_EXPR = "jsonb_agg(jsonb_build_object('date', date, 'price', price::text))"
JSONB_ARRAY_EXPR = "jsonb_agg(jsonb_build_array(date, price::text))"
JSON_ARRAY_EXPR = "json_agg(json_build_array(date, price::text))"
type PythonOut = list[tuple[str, list[tuple[date, Decimal]]]]
type JSONOut = list[tuple[str, list[dict[str, str]]]]
def load_any_json_array_python(
conn: Connection, query: bytes, *, binary: bool
) -> PythonOut:
with conn.cursor() as cursor:
cursor.execute(query, binary=binary)
rows = cursor.fetchall()
return [
(
row[0],
[(date.fromisoformat(item[0]), Decimal(item[1])) for item in row[1]],
)
for row in rows
]
def load_any_json_array_json(
conn: Connection, query: bytes, *, binary: bool
) -> JSONOut:
with conn.cursor() as cursor:
cursor.execute(query, binary=binary)
rows = cursor.fetchall()
return [
(
row[0],
[{"date": item[0], "price": item[1]} for item in row[1]],
)
for row in rows
]
def load_any_json_object_python(
conn: Connection, query: bytes, *, binary: bool
) -> PythonOut:
with conn.cursor() as cursor:
cursor.execute(query, binary=binary)
rows = cursor.fetchall()
return [
(
row[0],
[
(date.fromisoformat(item["date"]), Decimal(item["price"]))
for item in row[1]
],
)
for row in rows
]
def load_any_json_object_json(
conn: Connection, query: bytes, *, binary: bool
) -> PythonOut:
with conn.cursor() as cursor:
cursor.execute(query, binary=binary)
return cursor.fetchall()
def load_composite_text_python(conn: Connection) -> PythonOut:
with conn.cursor() as cursor:
cursor.execute(COMPOSITE_QUERY, binary=False)
rows = cursor.fetchall()
return [
(
row[0],
[(date.fromisoformat(item[0]), Decimal(item[1])) for item in row[1]],
)
for row in rows
]
def load_composite_text_json(conn: Connection) -> JSONOut:
with conn.cursor() as cursor:
cursor.execute(COMPOSITE_QUERY, binary=False)
rows = cursor.fetchall()
return [
(row[0], [{"date": item[0], "price": item[1]} for item in row[1]])
for row in rows
]
def load_composite_binary_python(conn: Connection) -> PythonOut:
with conn.cursor() as cursor:
cursor.execute(COMPOSITE_QUERY, binary=True)
return cursor.fetchall()
def load_composite_binary_json(conn: Connection) -> JSONOut:
with conn.cursor() as cursor:
cursor.execute(COMPOSITE_QUERY, binary=True)
rows = cursor.fetchall()
return [
(
row[0],
[{"date": item[0].isoformat(), "price": str(item[1])} for item in row[1]],
)
for row in rows
]
@pytest.mark.benchmark(group="json out")
class TestJSONOut:
@pytest.mark.parametrize("binary", [False, True])
@pytest.mark.parametrize(
"expr",
[JSON_OBJECT_EXPR, JSONB_OBJECT_EXPR],
ids=["json object", "jsonb object"],
)
def test_json_object(
self,
conn: Connection,
benchmark: BenchmarkFixture,
binary: bool,
expr: str,
):
benchmark(
load_any_json_object_json, conn, BASE_QUERY.format(expr), binary=binary
)
def test_composite_binary(self, conn: Connection, benchmark: BenchmarkFixture):
benchmark(load_composite_binary_json, conn)
def test_composite_text(self, conn: Connection, benchmark: BenchmarkFixture):
benchmark(load_composite_text_json, conn)
@pytest.mark.benchmark(group="python out")
class TestPythonOut:
@pytest.mark.parametrize("binary", [False, True])
@pytest.mark.parametrize(
"expr",
[JSON_ARRAY_EXPR, JSONB_ARRAY_EXPR],
ids=["json array", "jsonb array"],
)
def test_json_array(
self,
conn: Connection,
benchmark: BenchmarkFixture,
binary: bool,
expr: str,
):
benchmark(
load_any_json_array_python, conn, BASE_QUERY.format(expr), binary=binary
)
def test_composite_binary(self, conn: Connection, benchmark: BenchmarkFixture):
benchmark(load_composite_binary_python, conn)
def test_composite_text(self, conn: Connection, benchmark: BenchmarkFixture):
benchmark(load_composite_text_python, conn)
|
