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import pytest
from sqlalchemy import bindparam
from sqlalchemy import MetaData, Table, Column, Integer, String
from aiomysql import sa
meta = MetaData()
tbl = Table('sa_tbl_cache_test', meta,
Column('id', Integer, nullable=False,
primary_key=True),
Column('val', String(255)))
@pytest.fixture()
def make_engine(connection, mysql_params, loop):
engines = []
async def _make_engine(**kwargs):
if "unix_socket" in mysql_params:
conn_args = {"unix_socket": mysql_params["unix_socket"]}
else:
conn_args = {
"host": mysql_params['host'],
"port": mysql_params['port'],
}
if "ssl" in mysql_params:
conn_args["ssl"] = mysql_params["ssl"]
engine = await sa.create_engine(
db=mysql_params['db'],
user=mysql_params['user'],
password=mysql_params['password'],
minsize=10,
**conn_args,
**kwargs,
)
engines.append(engine)
return engine
yield _make_engine
for engine in engines:
engine.terminate()
loop.run_until_complete(engine.wait_closed())
async def start(engine):
async with engine.acquire() as conn:
tx = await conn.begin()
await conn.execute("DROP TABLE IF EXISTS "
"sa_tbl_cache_test")
await conn.execute("CREATE TABLE sa_tbl_cache_test"
"(id serial, val varchar(255))")
await conn.execute(tbl.insert().values(val='some_val_1'))
await conn.execute(tbl.insert().values(val='some_val_2'))
await conn.execute(tbl.insert().values(val='some_val_3'))
await tx.commit()
@pytest.mark.run_loop
async def test_dialect(make_engine):
cache = dict()
engine = await make_engine(compiled_cache=cache)
await start(engine)
async with engine.acquire() as conn:
# check select with params not added to cache
q = tbl.select().where(tbl.c.val == 'some_val_1')
cursor = await conn.execute(q)
row = await cursor.fetchone()
assert 'some_val_1' == row.val
assert 0 == len(cache)
# check select with bound params added to cache
select_by_val = tbl.select().where(
tbl.c.val == bindparam('value')
)
cursor = await conn.execute(
select_by_val, {'value': 'some_val_3'}
)
row = await cursor.fetchone()
assert 'some_val_3' == row.val
assert 1 == len(cache)
cursor = await conn.execute(
select_by_val, value='some_val_2'
)
row = await cursor.fetchone()
assert 'some_val_2' == row.val
assert 1 == len(cache)
select_all = tbl.select()
cursor = await conn.execute(select_all)
rows = await cursor.fetchall()
assert 3 == len(rows)
assert 2 == len(cache)
# check insert with bound params not added to cache
await conn.execute(tbl.insert().values(val='some_val_4'))
assert 2 == len(cache)
# check insert with bound params added to cache
q = tbl.insert().values(val=bindparam('value'))
await conn.execute(q, value='some_val_5')
assert 3 == len(cache)
await conn.execute(q, value='some_val_6')
assert 3 == len(cache)
await conn.execute(q, {'value': 'some_val_7'})
assert 3 == len(cache)
cursor = await conn.execute(select_all)
rows = await cursor.fetchall()
assert 7 == len(rows)
assert 3 == len(cache)
# check update with params not added to cache
q = tbl.update().where(
tbl.c.val == 'some_val_1'
).values(val='updated_val_1')
await conn.execute(q)
assert 3 == len(cache)
cursor = await conn.execute(
select_by_val, value='updated_val_1'
)
row = await cursor.fetchone()
assert 'updated_val_1' == row.val
# check update with bound params added to cache
q = tbl.update().where(
tbl.c.val == bindparam('value')
).values(val=bindparam('update'))
await conn.execute(
q, value='some_val_2', update='updated_val_2'
)
assert 4 == len(cache)
cursor = await conn.execute(
select_by_val, value='updated_val_2'
)
row = await cursor.fetchone()
assert 'updated_val_2' == row.val
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