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
|
# testing/schema.py
# Copyright (C) 2005-2024 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: https://www.opensource.org/licenses/mit-license.php
# mypy: ignore-errors
from __future__ import annotations
import sys
from . import config
from . import exclusions
from .. import event
from .. import schema
from .. import types as sqltypes
from ..orm import mapped_column as _orm_mapped_column
from ..util import OrderedDict
__all__ = ["Table", "Column"]
table_options = {}
def Table(*args, **kw) -> schema.Table:
"""A schema.Table wrapper/hook for dialect-specific tweaks."""
test_opts = {k: kw.pop(k) for k in list(kw) if k.startswith("test_")}
kw.update(table_options)
if exclusions.against(config._current, "mysql"):
if (
"mysql_engine" not in kw
and "mysql_type" not in kw
and "autoload_with" not in kw
):
if "test_needs_fk" in test_opts or "test_needs_acid" in test_opts:
kw["mysql_engine"] = "InnoDB"
else:
# there are in fact test fixtures that rely upon MyISAM,
# due to MySQL / MariaDB having poor FK behavior under innodb,
# such as a self-referential table can't be deleted from at
# once without attending to per-row dependencies. We'd need to
# add special steps to some fixtures if we want to not
# explicitly state MyISAM here
kw["mysql_engine"] = "MyISAM"
elif exclusions.against(config._current, "mariadb"):
if (
"mariadb_engine" not in kw
and "mariadb_type" not in kw
and "autoload_with" not in kw
):
if "test_needs_fk" in test_opts or "test_needs_acid" in test_opts:
kw["mariadb_engine"] = "InnoDB"
else:
kw["mariadb_engine"] = "MyISAM"
return schema.Table(*args, **kw)
def mapped_column(*args, **kw):
"""An orm.mapped_column wrapper/hook for dialect-specific tweaks."""
return _schema_column(_orm_mapped_column, args, kw)
def Column(*args, **kw):
"""A schema.Column wrapper/hook for dialect-specific tweaks."""
return _schema_column(schema.Column, args, kw)
def _schema_column(factory, args, kw):
test_opts = {k: kw.pop(k) for k in list(kw) if k.startswith("test_")}
if not config.requirements.foreign_key_ddl.enabled_for_config(config):
args = [arg for arg in args if not isinstance(arg, schema.ForeignKey)]
construct = factory(*args, **kw)
if factory is schema.Column:
col = construct
else:
col = construct.column
if test_opts.get("test_needs_autoincrement", False) and kw.get(
"primary_key", False
):
if col.default is None and col.server_default is None:
col.autoincrement = True
# allow any test suite to pick up on this
col.info["test_needs_autoincrement"] = True
# hardcoded rule for oracle; this should
# be moved out
if exclusions.against(config._current, "oracle"):
def add_seq(c, tbl):
c._init_items(
schema.Sequence(
_truncate_name(
config.db.dialect, tbl.name + "_" + c.name + "_seq"
),
optional=True,
)
)
event.listen(col, "after_parent_attach", add_seq, propagate=True)
return construct
class eq_type_affinity:
"""Helper to compare types inside of datastructures based on affinity.
E.g.::
eq_(
inspect(connection).get_columns("foo"),
[
{
"name": "id",
"type": testing.eq_type_affinity(sqltypes.INTEGER),
"nullable": False,
"default": None,
"autoincrement": False,
},
{
"name": "data",
"type": testing.eq_type_affinity(sqltypes.NullType),
"nullable": True,
"default": None,
"autoincrement": False,
},
],
)
"""
def __init__(self, target):
self.target = sqltypes.to_instance(target)
def __eq__(self, other):
return self.target._type_affinity is other._type_affinity
def __ne__(self, other):
return self.target._type_affinity is not other._type_affinity
class eq_compile_type:
"""similar to eq_type_affinity but uses compile"""
def __init__(self, target):
self.target = target
def __eq__(self, other):
return self.target == other.compile()
def __ne__(self, other):
return self.target != other.compile()
class eq_clause_element:
"""Helper to compare SQL structures based on compare()"""
def __init__(self, target):
self.target = target
def __eq__(self, other):
return self.target.compare(other)
def __ne__(self, other):
return not self.target.compare(other)
def _truncate_name(dialect, name):
if len(name) > dialect.max_identifier_length:
return (
name[0 : max(dialect.max_identifier_length - 6, 0)]
+ "_"
+ hex(hash(name) % 64)[2:]
)
else:
return name
def pep435_enum(name):
# Implements PEP 435 in the minimal fashion needed by SQLAlchemy
__members__ = OrderedDict()
def __init__(self, name, value, alias=None):
self.name = name
self.value = value
self.__members__[name] = self
value_to_member[value] = self
setattr(self.__class__, name, self)
if alias:
self.__members__[alias] = self
setattr(self.__class__, alias, self)
value_to_member = {}
@classmethod
def get(cls, value):
return value_to_member[value]
someenum = type(
name,
(object,),
{"__members__": __members__, "__init__": __init__, "get": get},
)
# getframe() trick for pickling I don't understand courtesy
# Python namedtuple()
try:
module = sys._getframe(1).f_globals.get("__name__", "__main__")
except (AttributeError, ValueError):
pass
if module is not None:
someenum.__module__ = module
return someenum
|
