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
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import mock
from oslotest import base as oslo_test_base
from sqlalchemy import exc as sa_exc
from sqlalchemy import inspect
from sqlalchemy import schema
from sqlalchemy import types
from oslo_db import exception
from oslo_db.sqlalchemy import provision
from oslo_db.sqlalchemy import test_base
class DropAllObjectsTest(test_base.DbTestCase):
def setUp(self):
super(DropAllObjectsTest, self).setUp()
self.metadata = metadata = schema.MetaData()
schema.Table(
'a', metadata,
schema.Column('id', types.Integer, primary_key=True),
mysql_engine='InnoDB'
)
schema.Table(
'b', metadata,
schema.Column('id', types.Integer, primary_key=True),
schema.Column('a_id', types.Integer, schema.ForeignKey('a.id')),
mysql_engine='InnoDB'
)
schema.Table(
'c', metadata,
schema.Column('id', types.Integer, primary_key=True),
schema.Column('b_id', types.Integer, schema.ForeignKey('b.id')),
schema.Column(
'd_id', types.Integer,
schema.ForeignKey('d.id', use_alter=True, name='c_d_fk')),
mysql_engine='InnoDB'
)
schema.Table(
'd', metadata,
schema.Column('id', types.Integer, primary_key=True),
schema.Column('c_id', types.Integer, schema.ForeignKey('c.id')),
mysql_engine='InnoDB'
)
metadata.create_all(self.engine, checkfirst=False)
# will drop nothing if the test worked
self.addCleanup(metadata.drop_all, self.engine, checkfirst=True)
def test_drop_all(self):
insp = inspect(self.engine)
self.assertEqual(
set(['a', 'b', 'c', 'd']),
set(insp.get_table_names())
)
self.db.backend.drop_all_objects(self.engine)
insp = inspect(self.engine)
self.assertEqual(
[],
insp.get_table_names()
)
class BackendNotAvailableTest(oslo_test_base.BaseTestCase):
def test_no_dbapi(self):
backend = provision.Backend(
"postgresql", "postgresql+nosuchdbapi://hostname/dsn")
with mock.patch(
"sqlalchemy.create_engine",
mock.Mock(side_effect=ImportError("nosuchdbapi"))):
# NOTE(zzzeek): Call and test the _verify function twice, as it
# exercises a different code path on subsequent runs vs.
# the first run
ex = self.assertRaises(
exception.BackendNotAvailable,
backend._verify)
self.assertEqual(
"Backend 'postgresql+nosuchdbapi' is unavailable: "
"No DBAPI installed", str(ex))
ex = self.assertRaises(
exception.BackendNotAvailable,
backend._verify)
self.assertEqual(
"Backend 'postgresql+nosuchdbapi' is unavailable: "
"No DBAPI installed", str(ex))
def test_cant_connect(self):
backend = provision.Backend(
"postgresql", "postgresql+nosuchdbapi://hostname/dsn")
with mock.patch(
"sqlalchemy.create_engine",
mock.Mock(return_value=mock.Mock(connect=mock.Mock(
side_effect=sa_exc.OperationalError(
"can't connect", None, None))
))
):
# NOTE(zzzeek): Call and test the _verify function twice, as it
# exercises a different code path on subsequent runs vs.
# the first run
ex = self.assertRaises(
exception.BackendNotAvailable,
backend._verify)
self.assertEqual(
"Backend 'postgresql+nosuchdbapi' is unavailable: "
"Could not connect", str(ex))
ex = self.assertRaises(
exception.BackendNotAvailable,
backend._verify)
self.assertEqual(
"Backend 'postgresql+nosuchdbapi' is unavailable: "
"Could not connect", str(ex))
class MySQLDropAllObjectsTest(
DropAllObjectsTest, test_base.MySQLOpportunisticTestCase):
pass
class PostgreSQLDropAllObjectsTest(
DropAllObjectsTest, test_base.PostgreSQLOpportunisticTestCase):
pass
class RetainSchemaTest(oslo_test_base.BaseTestCase):
DRIVER = "sqlite"
def setUp(self):
super(RetainSchemaTest, self).setUp()
metadata = schema.MetaData()
self.test_table = schema.Table(
'test_table', metadata,
schema.Column('x', types.Integer),
schema.Column('y', types.Integer),
mysql_engine='InnoDB'
)
def gen_schema(engine):
metadata.create_all(engine, checkfirst=False)
self._gen_schema = gen_schema
def test_once(self):
self._run_test()
def test_twice(self):
self._run_test()
def _run_test(self):
try:
database_resource = provision.DatabaseResource(self.DRIVER)
except exception.BackendNotAvailable:
self.skip("database not available")
schema_resource = provision.SchemaResource(
database_resource, self._gen_schema)
transaction_resource = provision.TransactionResource(
database_resource, schema_resource)
engine = transaction_resource.getResource()
with engine.connect() as conn:
rows = conn.execute(self.test_table.select())
self.assertEqual([], rows.fetchall())
trans = conn.begin()
conn.execute(
self.test_table.insert(),
{"x": 1, "y": 2}
)
trans.rollback()
rows = conn.execute(self.test_table.select())
self.assertEqual([], rows.fetchall())
trans = conn.begin()
conn.execute(
self.test_table.insert(),
{"x": 2, "y": 3}
)
trans.commit()
rows = conn.execute(self.test_table.select())
self.assertEqual([(2, 3)], rows.fetchall())
transaction_resource.finishedWith(engine)
class MySQLRetainSchemaTest(RetainSchemaTest):
DRIVER = "mysql"
class PostgresqlRetainSchemaTest(RetainSchemaTest):
DRIVER = "postgresql"
|
