1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
|
from sqlalchemy import event
from sqlalchemy import exc
from sqlalchemy import func
from sqlalchemy import select
from sqlalchemy import testing
from sqlalchemy import update
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy.ext.asyncio import create_async_engine
from sqlalchemy.orm import selectinload
from sqlalchemy.testing import async_test
from sqlalchemy.testing import eq_
from sqlalchemy.testing import is_
from sqlalchemy.testing import mock
from ...orm import _fixtures
class AsyncFixture(_fixtures.FixtureTest):
__requires__ = ("async_dialect",)
@classmethod
def setup_mappers(cls):
cls._setup_stock_mapping()
@testing.fixture
def async_engine(self):
return create_async_engine(testing.db.url)
@testing.fixture
def async_session(self, async_engine):
return AsyncSession(async_engine)
class AsyncSessionTest(AsyncFixture):
def test_requires_async_engine(self, async_engine):
testing.assert_raises_message(
exc.ArgumentError,
"AsyncEngine expected, got Engine",
AsyncSession,
bind=async_engine.sync_engine,
)
class AsyncSessionQueryTest(AsyncFixture):
@async_test
async def test_execute(self, async_session):
User = self.classes.User
stmt = (
select(User)
.options(selectinload(User.addresses))
.order_by(User.id)
)
result = await async_session.execute(stmt)
eq_(result.scalars().all(), self.static.user_address_result)
@async_test
async def test_stream_partitions(self, async_session):
User = self.classes.User
stmt = (
select(User)
.options(selectinload(User.addresses))
.order_by(User.id)
)
result = await async_session.stream(stmt)
assert_result = []
async for partition in result.scalars().partitions(3):
assert_result.append(partition)
eq_(
assert_result,
[
self.static.user_address_result[0:3],
self.static.user_address_result[3:],
],
)
class AsyncSessionTransactionTest(AsyncFixture):
run_inserts = None
@async_test
async def test_trans(self, async_session, async_engine):
async with async_engine.connect() as outer_conn:
User = self.classes.User
async with async_session.begin():
eq_(await outer_conn.scalar(select(func.count(User.id))), 0)
u1 = User(name="u1")
async_session.add(u1)
result = await async_session.execute(select(User))
eq_(result.scalar(), u1)
eq_(await outer_conn.scalar(select(func.count(User.id))), 1)
@async_test
async def test_commit_as_you_go(self, async_session, async_engine):
async with async_engine.connect() as outer_conn:
User = self.classes.User
eq_(await outer_conn.scalar(select(func.count(User.id))), 0)
u1 = User(name="u1")
async_session.add(u1)
result = await async_session.execute(select(User))
eq_(result.scalar(), u1)
await async_session.commit()
eq_(await outer_conn.scalar(select(func.count(User.id))), 1)
@async_test
async def test_trans_noctx(self, async_session, async_engine):
async with async_engine.connect() as outer_conn:
User = self.classes.User
trans = await async_session.begin()
try:
eq_(await outer_conn.scalar(select(func.count(User.id))), 0)
u1 = User(name="u1")
async_session.add(u1)
result = await async_session.execute(select(User))
eq_(result.scalar(), u1)
finally:
await trans.commit()
eq_(await outer_conn.scalar(select(func.count(User.id))), 1)
@async_test
async def test_delete(self, async_session):
User = self.classes.User
async with async_session.begin():
u1 = User(name="u1")
async_session.add(u1)
await async_session.flush()
conn = await async_session.connection()
eq_(await conn.scalar(select(func.count(User.id))), 1)
async_session.delete(u1)
await async_session.flush()
eq_(await conn.scalar(select(func.count(User.id))), 0)
@async_test
async def test_flush(self, async_session):
User = self.classes.User
async with async_session.begin():
u1 = User(name="u1")
async_session.add(u1)
conn = await async_session.connection()
eq_(await conn.scalar(select(func.count(User.id))), 0)
await async_session.flush()
eq_(await conn.scalar(select(func.count(User.id))), 1)
@async_test
async def test_refresh(self, async_session):
User = self.classes.User
async with async_session.begin():
u1 = User(name="u1")
async_session.add(u1)
await async_session.flush()
conn = await async_session.connection()
await conn.execute(
update(User)
.values(name="u2")
.execution_options(synchronize_session=None)
)
eq_(u1.name, "u1")
await async_session.refresh(u1)
eq_(u1.name, "u2")
eq_(await conn.scalar(select(func.count(User.id))), 1)
@async_test
async def test_merge(self, async_session):
User = self.classes.User
async with async_session.begin():
u1 = User(id=1, name="u1")
async_session.add(u1)
async with async_session.begin():
new_u = User(id=1, name="new u1")
new_u_merged = await async_session.merge(new_u)
is_(new_u_merged, u1)
eq_(u1.name, "new u1")
class AsyncEventTest(AsyncFixture):
"""The engine events all run in their normal synchronous context.
we do not provide an asyncio event interface at this time.
"""
__backend__ = True
@async_test
async def test_no_async_listeners(self, async_session):
with testing.expect_raises(
NotImplementedError,
"NotImplementedError: asynchronous events are not implemented "
"at this time. Apply synchronous listeners to the "
"AsyncEngine.sync_engine or "
"AsyncConnection.sync_connection attributes.",
):
event.listen(async_session, "before_flush", mock.Mock())
@async_test
async def test_sync_before_commit(self, async_session):
canary = mock.Mock()
event.listen(async_session.sync_session, "before_commit", canary)
async with async_session.begin():
pass
eq_(
canary.mock_calls,
[mock.call(async_session.sync_session)],
)
|
