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
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
|
from sqlalchemy.testing import fixtures
from sqlalchemy.sql.ddl import SchemaGenerator, SchemaDropper
from sqlalchemy import MetaData, Table, Column, Integer, Sequence, ForeignKey
from sqlalchemy import schema
from sqlalchemy.testing.mock import Mock
class EmitDDLTest(fixtures.TestBase):
def _mock_connection(self, item_exists):
def has_item(connection, name, schema):
return item_exists(name)
return Mock(dialect=Mock(
supports_sequences=True,
has_table=Mock(side_effect=has_item),
has_sequence=Mock(side_effect=has_item),
supports_comments=True,
inline_comments=False,
)
)
def _mock_create_fixture(self, checkfirst, tables,
item_exists=lambda item: False):
connection = self._mock_connection(item_exists)
return SchemaGenerator(connection.dialect, connection,
checkfirst=checkfirst,
tables=tables)
def _mock_drop_fixture(self, checkfirst, tables,
item_exists=lambda item: True):
connection = self._mock_connection(item_exists)
return SchemaDropper(connection.dialect, connection,
checkfirst=checkfirst,
tables=tables)
def _table_fixture(self):
m = MetaData()
return (m, ) + tuple(
Table('t%d' % i, m, Column('x', Integer))
for i in range(1, 6)
)
def _use_alter_fixture_one(self):
m = MetaData()
t1 = Table(
't1', m, Column('id', Integer, primary_key=True),
Column('t2id', Integer, ForeignKey('t2.id'))
)
t2 = Table(
't2', m, Column('id', Integer, primary_key=True),
Column('t1id', Integer, ForeignKey('t1.id'))
)
return m, t1, t2
def _fk_fixture_one(self):
m = MetaData()
t1 = Table(
't1', m, Column('id', Integer, primary_key=True),
Column('t2id', Integer, ForeignKey('t2.id'))
)
t2 = Table(
't2', m, Column('id', Integer, primary_key=True),
)
return m, t1, t2
def _table_seq_fixture(self):
m = MetaData()
s1 = Sequence('s1')
s2 = Sequence('s2')
t1 = Table('t1', m, Column("x", Integer, s1, primary_key=True))
t2 = Table('t2', m, Column("x", Integer, s2, primary_key=True))
return m, t1, t2, s1, s2
def _table_comment_fixture(self):
m = MetaData()
c1 = Column('id', Integer, comment='c1')
t1 = Table(
't1', m, c1,
comment='t1'
)
return m, t1, c1
def test_comment(self):
m, t1, c1 = self._table_comment_fixture()
generator = self._mock_create_fixture(
False, [t1], item_exists=lambda t: t not in ("t1",))
self._assert_create_comment([t1, t1, c1], generator, m)
def test_create_seq_checkfirst(self):
m, t1, t2, s1, s2 = self._table_seq_fixture()
generator = self._mock_create_fixture(
True, [
t1, t2], item_exists=lambda t: t not in (
"t1", "s1"))
self._assert_create([t1, s1], generator, m)
def test_drop_seq_checkfirst(self):
m, t1, t2, s1, s2 = self._table_seq_fixture()
generator = self._mock_drop_fixture(
True, [
t1, t2], item_exists=lambda t: t in (
"t1", "s1"))
self._assert_drop([t1, s1], generator, m)
def test_create_collection_checkfirst(self):
m, t1, t2, t3, t4, t5 = self._table_fixture()
generator = self._mock_create_fixture(
True, [
t2, t3, t4], item_exists=lambda t: t not in (
"t2", "t4"))
self._assert_create_tables([t2, t4], generator, m)
def test_drop_collection_checkfirst(self):
m, t1, t2, t3, t4, t5 = self._table_fixture()
generator = self._mock_drop_fixture(
True, [
t2, t3, t4], item_exists=lambda t: t in (
"t2", "t4"))
self._assert_drop_tables([t2, t4], generator, m)
def test_create_collection_nocheck(self):
m, t1, t2, t3, t4, t5 = self._table_fixture()
generator = self._mock_create_fixture(
False, [
t2, t3, t4], item_exists=lambda t: t not in (
"t2", "t4"))
self._assert_create_tables([t2, t3, t4], generator, m)
def test_create_empty_collection(self):
m, t1, t2, t3, t4, t5 = self._table_fixture()
generator = self._mock_create_fixture(
True,
[],
item_exists=lambda t: t not in (
"t2",
"t4"))
self._assert_create_tables([], generator, m)
def test_drop_empty_collection(self):
m, t1, t2, t3, t4, t5 = self._table_fixture()
generator = self._mock_drop_fixture(
True,
[],
item_exists=lambda t: t in (
"t2",
"t4"))
self._assert_drop_tables([], generator, m)
def test_drop_collection_nocheck(self):
m, t1, t2, t3, t4, t5 = self._table_fixture()
generator = self._mock_drop_fixture(
False, [
t2, t3, t4], item_exists=lambda t: t in (
"t2", "t4"))
self._assert_drop_tables([t2, t3, t4], generator, m)
def test_create_metadata_checkfirst(self):
m, t1, t2, t3, t4, t5 = self._table_fixture()
generator = self._mock_create_fixture(
True,
None,
item_exists=lambda t: t not in (
"t2",
"t4"))
self._assert_create_tables([t2, t4], generator, m)
def test_drop_metadata_checkfirst(self):
m, t1, t2, t3, t4, t5 = self._table_fixture()
generator = self._mock_drop_fixture(
True,
None,
item_exists=lambda t: t in (
"t2",
"t4"))
self._assert_drop_tables([t2, t4], generator, m)
def test_create_metadata_nocheck(self):
m, t1, t2, t3, t4, t5 = self._table_fixture()
generator = self._mock_create_fixture(
False,
None,
item_exists=lambda t: t not in (
"t2",
"t4"))
self._assert_create_tables([t1, t2, t3, t4, t5], generator, m)
def test_drop_metadata_nocheck(self):
m, t1, t2, t3, t4, t5 = self._table_fixture()
generator = self._mock_drop_fixture(
False,
None,
item_exists=lambda t: t in (
"t2",
"t4"))
self._assert_drop_tables([t1, t2, t3, t4, t5], generator, m)
def test_create_metadata_auto_alter_fk(self):
m, t1, t2 = self._use_alter_fixture_one()
generator = self._mock_create_fixture(
False, [t1, t2]
)
self._assert_create_w_alter(
[t1, t2] +
list(t1.foreign_key_constraints) +
list(t2.foreign_key_constraints),
generator,
m
)
def test_create_metadata_inline_fk(self):
m, t1, t2 = self._fk_fixture_one()
generator = self._mock_create_fixture(
False, [t1, t2]
)
self._assert_create_w_alter(
[t1, t2] +
list(t1.foreign_key_constraints) +
list(t2.foreign_key_constraints),
generator,
m
)
def _assert_create_tables(self, elements, generator, argument):
self._assert_ddl(schema.CreateTable, elements, generator, argument)
def _assert_drop_tables(self, elements, generator, argument):
self._assert_ddl(schema.DropTable, elements, generator, argument)
def _assert_create(self, elements, generator, argument):
self._assert_ddl(
(schema.CreateTable, schema.CreateSequence),
elements, generator, argument)
def _assert_drop(self, elements, generator, argument):
self._assert_ddl(
(schema.DropTable, schema.DropSequence),
elements, generator, argument)
def _assert_create_w_alter(self, elements, generator, argument):
self._assert_ddl(
(schema.CreateTable, schema.CreateSequence, schema.AddConstraint),
elements, generator, argument)
def _assert_drop_w_alter(self, elements, generator, argument):
self._assert_ddl(
(schema.DropTable, schema.DropSequence, schema.DropConstraint),
elements, generator, argument)
def _assert_create_comment(self, elements, generator, argument):
self._assert_ddl(
(schema.CreateTable, schema.SetTableComment, schema.SetColumnComment),
elements, generator, argument)
def _assert_ddl(self, ddl_cls, elements, generator, argument):
generator.traverse_single(argument)
for call_ in generator.connection.execute.mock_calls:
c = call_[1][0]
assert isinstance(c, ddl_cls)
assert c.element in elements, "element %r was not expected"\
% c.element
elements.remove(c.element)
if getattr(c, 'include_foreign_key_constraints', None) is not None:
elements[:] = [
e for e in elements
if e not in set(c.include_foreign_key_constraints)]
assert not elements, "elements remain in list: %r" % elements
|
