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from sqlalchemy import Column
from sqlalchemy import ForeignKeyConstraint
from sqlalchemy import Integer
from sqlalchemy import MetaData
from sqlalchemy import String
from sqlalchemy import Table
from ._autogen_fixtures import AutogenFixtureTest
from ...testing import combinations
from ...testing import config
from ...testing import eq_
from ...testing import mock
from ...testing import TestBase
class AutogenerateForeignKeysTest(AutogenFixtureTest, TestBase):
__backend__ = True
__requires__ = ("foreign_key_constraint_reflection",)
def test_remove_fk(self):
m1 = MetaData()
m2 = MetaData()
Table(
"some_table",
m1,
Column("test", String(10), primary_key=True),
)
Table(
"user",
m1,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("test2", String(10)),
ForeignKeyConstraint(["test2"], ["some_table.test"]),
)
Table(
"some_table",
m2,
Column("test", String(10), primary_key=True),
)
Table(
"user",
m2,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("test2", String(10)),
)
diffs = self._fixture(m1, m2)
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["test2"],
"some_table",
["test"],
conditional_name="servergenerated",
)
def test_add_fk(self):
m1 = MetaData()
m2 = MetaData()
Table(
"some_table",
m1,
Column("id", Integer, primary_key=True),
Column("test", String(10)),
)
Table(
"user",
m1,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("test2", String(10)),
)
Table(
"some_table",
m2,
Column("id", Integer, primary_key=True),
Column("test", String(10)),
)
Table(
"user",
m2,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("test2", String(10)),
ForeignKeyConstraint(["test2"], ["some_table.test"]),
)
diffs = self._fixture(m1, m2)
self._assert_fk_diff(
diffs[0], "add_fk", "user", ["test2"], "some_table", ["test"]
)
def test_no_change(self):
m1 = MetaData()
m2 = MetaData()
Table(
"some_table",
m1,
Column("id", Integer, primary_key=True),
Column("test", String(10)),
)
Table(
"user",
m1,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("test2", Integer),
ForeignKeyConstraint(["test2"], ["some_table.id"]),
)
Table(
"some_table",
m2,
Column("id", Integer, primary_key=True),
Column("test", String(10)),
)
Table(
"user",
m2,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("test2", Integer),
ForeignKeyConstraint(["test2"], ["some_table.id"]),
)
diffs = self._fixture(m1, m2)
eq_(diffs, [])
def test_no_change_composite_fk(self):
m1 = MetaData()
m2 = MetaData()
Table(
"some_table",
m1,
Column("id_1", String(10), primary_key=True),
Column("id_2", String(10), primary_key=True),
)
Table(
"user",
m1,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("other_id_1", String(10)),
Column("other_id_2", String(10)),
ForeignKeyConstraint(
["other_id_1", "other_id_2"],
["some_table.id_1", "some_table.id_2"],
),
)
Table(
"some_table",
m2,
Column("id_1", String(10), primary_key=True),
Column("id_2", String(10), primary_key=True),
)
Table(
"user",
m2,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("other_id_1", String(10)),
Column("other_id_2", String(10)),
ForeignKeyConstraint(
["other_id_1", "other_id_2"],
["some_table.id_1", "some_table.id_2"],
),
)
diffs = self._fixture(m1, m2)
eq_(diffs, [])
def test_casing_convention_changed_so_put_drops_first(self):
m1 = MetaData()
m2 = MetaData()
Table(
"some_table",
m1,
Column("test", String(10), primary_key=True),
)
Table(
"user",
m1,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("test2", String(10)),
ForeignKeyConstraint(["test2"], ["some_table.test"], name="MyFK"),
)
Table(
"some_table",
m2,
Column("test", String(10), primary_key=True),
)
# foreign key autogen currently does not take "name" into account,
# so change the def just for the purposes of testing the
# add/drop order for now.
Table(
"user",
m2,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("test2", String(10)),
ForeignKeyConstraint(["a1"], ["some_table.test"], name="myfk"),
)
diffs = self._fixture(m1, m2)
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["test2"],
"some_table",
["test"],
name="MyFK" if config.requirements.fk_names.enabled else None,
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["a1"],
"some_table",
["test"],
name="myfk",
)
def test_add_composite_fk_with_name(self):
m1 = MetaData()
m2 = MetaData()
Table(
"some_table",
m1,
Column("id_1", String(10), primary_key=True),
Column("id_2", String(10), primary_key=True),
)
Table(
"user",
m1,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("other_id_1", String(10)),
Column("other_id_2", String(10)),
)
Table(
"some_table",
m2,
Column("id_1", String(10), primary_key=True),
Column("id_2", String(10), primary_key=True),
)
Table(
"user",
m2,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("other_id_1", String(10)),
Column("other_id_2", String(10)),
ForeignKeyConstraint(
["other_id_1", "other_id_2"],
["some_table.id_1", "some_table.id_2"],
name="fk_test_name",
),
)
diffs = self._fixture(m1, m2)
self._assert_fk_diff(
diffs[0],
"add_fk",
"user",
["other_id_1", "other_id_2"],
"some_table",
["id_1", "id_2"],
name="fk_test_name",
)
@config.requirements.no_name_normalize
def test_remove_composite_fk(self):
m1 = MetaData()
m2 = MetaData()
Table(
"some_table",
m1,
Column("id_1", String(10), primary_key=True),
Column("id_2", String(10), primary_key=True),
)
Table(
"user",
m1,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("other_id_1", String(10)),
Column("other_id_2", String(10)),
ForeignKeyConstraint(
["other_id_1", "other_id_2"],
["some_table.id_1", "some_table.id_2"],
name="fk_test_name",
),
)
Table(
"some_table",
m2,
Column("id_1", String(10), primary_key=True),
Column("id_2", String(10), primary_key=True),
)
Table(
"user",
m2,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("a1", String(10), server_default="x"),
Column("other_id_1", String(10)),
Column("other_id_2", String(10)),
)
diffs = self._fixture(m1, m2)
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["other_id_1", "other_id_2"],
"some_table",
["id_1", "id_2"],
conditional_name="fk_test_name",
)
def test_add_fk_colkeys(self):
m1 = MetaData()
m2 = MetaData()
Table(
"some_table",
m1,
Column("id_1", String(10), primary_key=True),
Column("id_2", String(10), primary_key=True),
)
Table(
"user",
m1,
Column("id", Integer, primary_key=True),
Column("other_id_1", String(10)),
Column("other_id_2", String(10)),
)
Table(
"some_table",
m2,
Column("id_1", String(10), key="tid1", primary_key=True),
Column("id_2", String(10), key="tid2", primary_key=True),
)
Table(
"user",
m2,
Column("id", Integer, primary_key=True),
Column("other_id_1", String(10), key="oid1"),
Column("other_id_2", String(10), key="oid2"),
ForeignKeyConstraint(
["oid1", "oid2"],
["some_table.tid1", "some_table.tid2"],
name="fk_test_name",
),
)
diffs = self._fixture(m1, m2)
self._assert_fk_diff(
diffs[0],
"add_fk",
"user",
["other_id_1", "other_id_2"],
"some_table",
["id_1", "id_2"],
name="fk_test_name",
)
def test_no_change_colkeys(self):
m1 = MetaData()
m2 = MetaData()
Table(
"some_table",
m1,
Column("id_1", String(10), primary_key=True),
Column("id_2", String(10), primary_key=True),
)
Table(
"user",
m1,
Column("id", Integer, primary_key=True),
Column("other_id_1", String(10)),
Column("other_id_2", String(10)),
ForeignKeyConstraint(
["other_id_1", "other_id_2"],
["some_table.id_1", "some_table.id_2"],
),
)
Table(
"some_table",
m2,
Column("id_1", String(10), key="tid1", primary_key=True),
Column("id_2", String(10), key="tid2", primary_key=True),
)
Table(
"user",
m2,
Column("id", Integer, primary_key=True),
Column("other_id_1", String(10), key="oid1"),
Column("other_id_2", String(10), key="oid2"),
ForeignKeyConstraint(
["oid1", "oid2"], ["some_table.tid1", "some_table.tid2"]
),
)
diffs = self._fixture(m1, m2)
eq_(diffs, [])
class IncludeHooksTest(AutogenFixtureTest, TestBase):
__backend__ = True
__requires__ = ("fk_names",)
@combinations(("object",), ("name",))
@config.requirements.no_name_normalize
def test_remove_connection_fk(self, hook_type):
m1 = MetaData()
m2 = MetaData()
ref = Table(
"ref",
m1,
Column("id", Integer, primary_key=True),
)
t1 = Table(
"t",
m1,
Column("x", Integer),
Column("y", Integer),
)
t1.append_constraint(
ForeignKeyConstraint([t1.c.x], [ref.c.id], name="fk1")
)
t1.append_constraint(
ForeignKeyConstraint([t1.c.y], [ref.c.id], name="fk2")
)
ref = Table(
"ref",
m2,
Column("id", Integer, primary_key=True),
)
Table(
"t",
m2,
Column("x", Integer),
Column("y", Integer),
)
if hook_type == "object":
def include_object(object_, name, type_, reflected, compare_to):
return not (
isinstance(object_, ForeignKeyConstraint)
and type_ == "foreign_key_constraint"
and reflected
and name == "fk1"
)
diffs = self._fixture(m1, m2, object_filters=include_object)
elif hook_type == "name":
def include_name(name, type_, parent_names):
if name == "fk1":
if type_ == "index": # MariaDB thing
return True
eq_(type_, "foreign_key_constraint")
eq_(
parent_names,
{
"schema_name": None,
"table_name": "t",
"schema_qualified_table_name": "t",
},
)
return False
else:
return True
diffs = self._fixture(m1, m2, name_filters=include_name)
self._assert_fk_diff(
diffs[0],
"remove_fk",
"t",
["y"],
"ref",
["id"],
conditional_name="fk2",
)
eq_(len(diffs), 1)
def test_add_metadata_fk(self):
m1 = MetaData()
m2 = MetaData()
Table(
"ref",
m1,
Column("id", Integer, primary_key=True),
)
Table(
"t",
m1,
Column("x", Integer),
Column("y", Integer),
)
ref = Table(
"ref",
m2,
Column("id", Integer, primary_key=True),
)
t2 = Table(
"t",
m2,
Column("x", Integer),
Column("y", Integer),
)
t2.append_constraint(
ForeignKeyConstraint([t2.c.x], [ref.c.id], name="fk1")
)
t2.append_constraint(
ForeignKeyConstraint([t2.c.y], [ref.c.id], name="fk2")
)
def include_object(object_, name, type_, reflected, compare_to):
return not (
isinstance(object_, ForeignKeyConstraint)
and type_ == "foreign_key_constraint"
and not reflected
and name == "fk1"
)
diffs = self._fixture(m1, m2, object_filters=include_object)
self._assert_fk_diff(
diffs[0], "add_fk", "t", ["y"], "ref", ["id"], name="fk2"
)
eq_(len(diffs), 1)
@combinations(("object",), ("name",))
@config.requirements.no_name_normalize
def test_change_fk(self, hook_type):
m1 = MetaData()
m2 = MetaData()
r1a = Table(
"ref_a",
m1,
Column("a", Integer, primary_key=True),
)
Table(
"ref_b",
m1,
Column("a", Integer, primary_key=True),
Column("b", Integer, primary_key=True),
)
t1 = Table(
"t",
m1,
Column("x", Integer),
Column("y", Integer),
Column("z", Integer),
)
t1.append_constraint(
ForeignKeyConstraint([t1.c.x], [r1a.c.a], name="fk1")
)
t1.append_constraint(
ForeignKeyConstraint([t1.c.y], [r1a.c.a], name="fk2")
)
Table(
"ref_a",
m2,
Column("a", Integer, primary_key=True),
)
r2b = Table(
"ref_b",
m2,
Column("a", Integer, primary_key=True),
Column("b", Integer, primary_key=True),
)
t2 = Table(
"t",
m2,
Column("x", Integer),
Column("y", Integer),
Column("z", Integer),
)
t2.append_constraint(
ForeignKeyConstraint(
[t2.c.x, t2.c.z], [r2b.c.a, r2b.c.b], name="fk1"
)
)
t2.append_constraint(
ForeignKeyConstraint(
[t2.c.y, t2.c.z], [r2b.c.a, r2b.c.b], name="fk2"
)
)
if hook_type == "object":
def include_object(object_, name, type_, reflected, compare_to):
return not (
isinstance(object_, ForeignKeyConstraint)
and type_ == "foreign_key_constraint"
and name == "fk1"
)
diffs = self._fixture(m1, m2, object_filters=include_object)
elif hook_type == "name":
def include_name(name, type_, parent_names):
if type_ == "index":
return True # MariaDB thing
if name == "fk1":
eq_(type_, "foreign_key_constraint")
eq_(
parent_names,
{
"schema_name": None,
"table_name": "t",
"schema_qualified_table_name": "t",
},
)
return False
else:
return True
diffs = self._fixture(m1, m2, name_filters=include_name)
if hook_type == "object":
self._assert_fk_diff(
diffs[0], "remove_fk", "t", ["y"], "ref_a", ["a"], name="fk2"
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"t",
["y", "z"],
"ref_b",
["a", "b"],
name="fk2",
)
eq_(len(diffs), 2)
elif hook_type == "name":
eq_(
{(d[0], d[1].name) for d in diffs},
{("add_fk", "fk2"), ("add_fk", "fk1"), ("remove_fk", "fk2")},
)
class AutogenerateFKOptionsTest(AutogenFixtureTest, TestBase):
__backend__ = True
def _fk_opts_fixture(self, old_opts, new_opts):
m1 = MetaData()
m2 = MetaData()
Table(
"some_table",
m1,
Column("id", Integer, primary_key=True),
Column("test", String(10)),
)
Table(
"user",
m1,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("tid", Integer),
ForeignKeyConstraint(["tid"], ["some_table.id"], **old_opts),
)
Table(
"some_table",
m2,
Column("id", Integer, primary_key=True),
Column("test", String(10)),
)
Table(
"user",
m2,
Column("id", Integer, primary_key=True),
Column("name", String(50), nullable=False),
Column("tid", Integer),
ForeignKeyConstraint(["tid"], ["some_table.id"], **new_opts),
)
return self._fixture(m1, m2)
@config.requirements.fk_ondelete_is_reflected
def test_add_ondelete(self):
diffs = self._fk_opts_fixture({}, {"ondelete": "cascade"})
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
ondelete=None,
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
ondelete="cascade",
)
@config.requirements.fk_ondelete_is_reflected
def test_remove_ondelete(self):
diffs = self._fk_opts_fixture({"ondelete": "CASCADE"}, {})
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
ondelete="CASCADE",
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
ondelete=None,
)
def test_nochange_ondelete(self):
"""test case sensitivity"""
diffs = self._fk_opts_fixture(
{"ondelete": "caSCAde"}, {"ondelete": "CasCade"}
)
eq_(diffs, [])
@config.requirements.fk_onupdate_is_reflected
def test_add_onupdate(self):
diffs = self._fk_opts_fixture({}, {"onupdate": "cascade"})
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
onupdate=None,
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
onupdate="cascade",
)
@config.requirements.fk_onupdate_is_reflected
def test_remove_onupdate(self):
diffs = self._fk_opts_fixture({"onupdate": "CASCADE"}, {})
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
onupdate="CASCADE",
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
onupdate=None,
)
@config.requirements.fk_onupdate
def test_nochange_onupdate(self):
"""test case sensitivity"""
diffs = self._fk_opts_fixture(
{"onupdate": "caSCAde"}, {"onupdate": "CasCade"}
)
eq_(diffs, [])
@config.requirements.fk_ondelete_restrict
def test_nochange_ondelete_restrict(self):
"""test the RESTRICT option which MySQL doesn't report on"""
diffs = self._fk_opts_fixture(
{"ondelete": "restrict"}, {"ondelete": "restrict"}
)
eq_(diffs, [])
@config.requirements.fk_onupdate_restrict
def test_nochange_onupdate_restrict(self):
"""test the RESTRICT option which MySQL doesn't report on"""
diffs = self._fk_opts_fixture(
{"onupdate": "restrict"}, {"onupdate": "restrict"}
)
eq_(diffs, [])
@config.requirements.fk_ondelete_noaction
def test_nochange_ondelete_noaction(self):
"""test the NO ACTION option which generally comes back as None"""
diffs = self._fk_opts_fixture(
{"ondelete": "no action"}, {"ondelete": "no action"}
)
eq_(diffs, [])
@config.requirements.fk_onupdate
def test_nochange_onupdate_noaction(self):
"""test the NO ACTION option which generally comes back as None"""
diffs = self._fk_opts_fixture(
{"onupdate": "no action"}, {"onupdate": "no action"}
)
eq_(diffs, [])
@config.requirements.fk_ondelete_restrict
def test_change_ondelete_from_restrict(self):
"""test the RESTRICT option which MySQL doesn't report on"""
# note that this is impossible to detect if we change
# from RESTRICT to NO ACTION on MySQL.
diffs = self._fk_opts_fixture(
{"ondelete": "restrict"}, {"ondelete": "cascade"}
)
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
onupdate=None,
ondelete=mock.ANY, # MySQL reports None, PG reports RESTRICT
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
onupdate=None,
ondelete="cascade",
)
@config.requirements.fk_ondelete_restrict
def test_change_onupdate_from_restrict(self):
"""test the RESTRICT option which MySQL doesn't report on"""
# note that this is impossible to detect if we change
# from RESTRICT to NO ACTION on MySQL.
diffs = self._fk_opts_fixture(
{"onupdate": "restrict"}, {"onupdate": "cascade"}
)
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
onupdate=mock.ANY, # MySQL reports None, PG reports RESTRICT
ondelete=None,
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
onupdate="cascade",
ondelete=None,
)
@config.requirements.fk_ondelete_is_reflected
@config.requirements.fk_onupdate_is_reflected
def test_ondelete_onupdate_combo(self):
diffs = self._fk_opts_fixture(
{"onupdate": "CASCADE", "ondelete": "SET NULL"},
{"onupdate": "RESTRICT", "ondelete": "RESTRICT"},
)
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
onupdate="CASCADE",
ondelete="SET NULL",
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
onupdate="RESTRICT",
ondelete="RESTRICT",
)
@config.requirements.fk_initially
def test_add_initially_deferred(self):
diffs = self._fk_opts_fixture({}, {"initially": "deferred"})
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
initially=None,
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
initially="deferred",
)
@config.requirements.fk_initially
def test_remove_initially_deferred(self):
diffs = self._fk_opts_fixture({"initially": "deferred"}, {})
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
initially="DEFERRED",
deferrable=True,
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
initially=None,
)
@config.requirements.fk_deferrable
@config.requirements.fk_initially
def test_add_initially_immediate_plus_deferrable(self):
diffs = self._fk_opts_fixture(
{}, {"initially": "immediate", "deferrable": True}
)
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
initially=None,
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
initially="immediate",
deferrable=True,
)
@config.requirements.fk_deferrable
@config.requirements.fk_initially
def test_remove_initially_immediate_plus_deferrable(self):
diffs = self._fk_opts_fixture(
{"initially": "immediate", "deferrable": True}, {}
)
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
initially=None, # immediate is the default
deferrable=True,
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
initially=None,
deferrable=None,
)
@config.requirements.fk_initially
@config.requirements.fk_deferrable
def test_add_initially_deferrable_nochange_one(self):
diffs = self._fk_opts_fixture(
{"deferrable": True, "initially": "immediate"},
{"deferrable": True, "initially": "immediate"},
)
eq_(diffs, [])
@config.requirements.fk_initially
@config.requirements.fk_deferrable
def test_add_initially_deferrable_nochange_two(self):
diffs = self._fk_opts_fixture(
{"deferrable": True, "initially": "deferred"},
{"deferrable": True, "initially": "deferred"},
)
eq_(diffs, [])
@config.requirements.fk_initially
@config.requirements.fk_deferrable
def test_add_initially_deferrable_nochange_three(self):
diffs = self._fk_opts_fixture(
{"deferrable": None, "initially": "deferred"},
{"deferrable": None, "initially": "deferred"},
)
eq_(diffs, [])
@config.requirements.fk_deferrable
def test_add_deferrable(self):
diffs = self._fk_opts_fixture({}, {"deferrable": True})
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
deferrable=None,
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
deferrable=True,
)
@config.requirements.fk_deferrable_is_reflected
def test_remove_deferrable(self):
diffs = self._fk_opts_fixture({"deferrable": True}, {})
self._assert_fk_diff(
diffs[0],
"remove_fk",
"user",
["tid"],
"some_table",
["id"],
deferrable=True,
conditional_name="servergenerated",
)
self._assert_fk_diff(
diffs[1],
"add_fk",
"user",
["tid"],
"some_table",
["id"],
deferrable=None,
)