async def test_view(engine):
async with engine.acquire() as conn:
async for row in conn.execute(users.select()):
print(row)
async for row in conn.execute(projects.select()):
print(row)
#
await conn.execute(users.delete().where(users.c.name == "A"))
res: ResultProxy = None
rows: List[RowProxy] = []
res = await conn.execute(users.select())
rows = await res.fetchall()
assert len(rows) == 2
res = await conn.execute(projects.select())
rows = await res.fetchall()
assert len(rows) == 3
# effect of cascade is that relation deletes as well
res = await conn.execute(user_to_projects.select())
rows = await res.fetchall()
assert len(rows) == 1
assert not any(row[user_to_projects.c.user_id] == 1 for row in rows)
async def test_insert_user(engine):
async with engine.acquire() as conn:
# execute + scalar
res: ResultProxy = await conn.execute(
users.insert().values(**random_user(name="FOO")))
assert res.returns_rows
assert res.rowcount == 1
assert res.keys() == ("id", )
user_id = await res.scalar()
assert isinstance(user_id, int)
assert user_id > 0
# only scalar
user2_id: int = await conn.scalar(
users.insert().values(**random_user(name="BAR")))
assert isinstance(user2_id, int)
assert user2_id == user_id + 1
# query result
res: ResultProxy = await conn.execute(
users.select().where(users.c.id == user2_id))
assert res.returns_rows
assert res.rowcount == 1
assert len(res.keys()) > 1
# DIFFERENT betwen .first() and fetchone()
user2: RowProxy = await res.first()
# Fetch the first row and then close the result set unconditionally.
assert res.closed
res: ResultProxy = await conn.execute(
users.select().where(users.c.id == user2_id))
user2a: RowProxy = await res.fetchone()
# If rows are present, the cursor remains open after this is called.
assert not res.closed
assert user2 == user2a
user2b: RowProxy = await res.fetchone()
# If no more rows, the cursor is automatically closed and None is returned
assert user2b is None
assert res.closed
async def test_view(engine):
async with engine.acquire() as conn:
async for row in conn.execute(users.select()):
print(row)
async for row in conn.execute(projects.select()):
print(row)
#
await conn.execute(users.delete().where(users.c.name == "A"))
res: ResultProxy = None
rows: List[RowProxy] = []
res = await conn.execute(users.select())
rows = await res.fetchall()
assert len(rows) == 2
res = await conn.execute(projects.select())
rows = await res.fetchall()
assert len(rows) == 3
async def test_own_group(make_engine):
engine = await make_engine()
sync_engine = make_engine(is_async=False)
metadata.drop_all(sync_engine)
metadata.create_all(sync_engine)
async with engine.acquire() as conn:
result = await conn.execute(users.insert().values(
**random_user()).returning(literal_column("*")))
user: RowProxy = await result.fetchone()
assert not user.primary_gid
# now fetch the same user that shall have a primary group set by the db
result = await conn.execute(users.select().where(users.c.id == user.id)
)
user: RowProxy = await result.fetchone()
assert user.primary_gid
# now check there is a primary group
result = await conn.execute(
groups.select().where(groups.c.type == GroupType.PRIMARY))
primary_group: RowProxy = await result.fetchone()
assert primary_group.gid == user.primary_gid
groups_count = await conn.scalar(
select([func.count(groups.c.gid)
]).where(groups.c.gid == user.primary_gid))
assert groups_count == 1
relations_count = await conn.scalar(
select([func.count()]).select_from(user_to_groups))
assert relations_count == 2 # own group + all group
# try removing the primary group
with pytest.raises(ForeignKeyViolation):
await conn.execute(
groups.delete().where(groups.c.gid == user.primary_gid))
# now remove the users should remove the primary group
await conn.execute(users.delete().where(users.c.id == user.id))
users_count = await conn.scalar(
select([func.count()]).select_from(users))
assert users_count == 0
groups_count = await conn.scalar(
select([func.count()]).select_from(groups))
assert groups_count == 1 # the all group is still around
relations_count = await conn.scalar(
select([func.count()]).select_from(user_to_groups))
assert relations_count == (users_count + users_count)