import sys from sqlalchemy import Column from sqlalchemy import ForeignKey from sqlalchemy import ForeignKeyConstraint from sqlalchemy import func from sqlalchemy import Index from sqlalchemy import Integer from sqlalchemy import MetaData from sqlalchemy import Numeric from sqlalchemy import String from sqlalchemy import Table from sqlalchemy import UniqueConstraint from alembic.testing import assertions from alembic.testing import config from alembic.testing import engines from alembic.testing import eq_ from alembic.testing import TestBase from alembic.testing.env import staging_env from alembic.util import sqla_compat from ._autogen_fixtures import AutogenFixtureTest py3k = sys.version_info >= (3,) class NoUqReflection(object): __requires__ = () def setUp(self): staging_env() self.bind = eng = engines.testing_engine() def unimpl(*arg, **kw): raise NotImplementedError() eng.dialect.get_unique_constraints = unimpl def test_add_ix_on_table_create(self): return super(NoUqReflection, self).test_add_ix_on_table_create() def test_add_idx_non_col(self): return super(NoUqReflection, self).test_add_idx_non_col() class AutogenerateUniqueIndexTest(AutogenFixtureTest, TestBase): reports_unique_constraints = True reports_unique_constraints_as_indexes = False __requires__ = ("unique_constraint_reflection",) __only_on__ = "sqlite" def test_index_flag_becomes_named_unique_constraint(self): m1 = MetaData() m2 = MetaData() Table( "user", m1, Column("id", Integer, primary_key=True), Column("name", String(50), nullable=False, index=True), Column("a1", String(10), server_default="x"), ) Table( "user", m2, Column("id", Integer, primary_key=True), Column("name", String(50), nullable=False), Column("a1", String(10), server_default="x"), UniqueConstraint("name", name="uq_user_name"), ) diffs = self._fixture(m1, m2) if self.reports_unique_constraints: eq_(diffs[0][0], "add_constraint") eq_(diffs[0][1].name, "uq_user_name") eq_(diffs[1][0], "remove_index") eq_(diffs[1][1].name, "ix_user_name") else: eq_(diffs[0][0], "remove_index") eq_(diffs[0][1].name, "ix_user_name") def test_add_unique_constraint(self): m1 = MetaData() m2 = MetaData() Table( "address", m1, Column("id", Integer, primary_key=True), Column("email_address", String(100), nullable=False), Column("qpr", String(10), index=True), ) Table( "address", m2, Column("id", Integer, primary_key=True), Column("email_address", String(100), nullable=False), Column("qpr", String(10), index=True), UniqueConstraint("email_address", name="uq_email_address"), ) diffs = self._fixture(m1, m2) if self.reports_unique_constraints: eq_(diffs[0][0], "add_constraint") eq_(diffs[0][1].name, "uq_email_address") else: eq_(diffs, []) def test_unique_flag_nothing_changed(self): m1 = MetaData() m2 = MetaData() Table( "unq_idx", m1, Column("id", Integer, primary_key=True), Column("x", String(20)), Index("x", "x", unique=True), ) Table( "unq_idx", m2, Column("id", Integer, primary_key=True), Column("x", String(20)), Index("x", "x", unique=True), ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_index_becomes_unique(self): m1 = MetaData() m2 = MetaData() Table( "order", m1, Column("order_id", Integer, primary_key=True), Column("amount", Numeric(10, 2), nullable=True), Column("user_id", Integer), UniqueConstraint( "order_id", "user_id", name="order_order_id_user_id_unique" ), Index("order_user_id_amount_idx", "user_id", "amount"), ) Table( "order", m2, Column("order_id", Integer, primary_key=True), Column("amount", Numeric(10, 2), nullable=True), Column("user_id", Integer), UniqueConstraint( "order_id", "user_id", name="order_order_id_user_id_unique" ), Index( "order_user_id_amount_idx", "user_id", "amount", unique=True ), ) diffs = self._fixture(m1, m2) eq_(diffs[0][0], "remove_index") eq_(diffs[0][1].name, "order_user_id_amount_idx") eq_(diffs[0][1].unique, False) eq_(diffs[1][0], "add_index") eq_(diffs[1][1].name, "order_user_id_amount_idx") eq_(diffs[1][1].unique, True) def test_mismatch_db_named_col_flag(self): m1 = MetaData() m2 = MetaData() Table( "item", m1, Column("x", Integer), UniqueConstraint("x", name="db_generated_name"), ) # test mismatch between unique=True and # named uq constraint Table("item", m2, Column("x", Integer, unique=True)) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_new_table_added(self): m1 = MetaData() m2 = MetaData() Table( "extra", m2, Column("foo", Integer, index=True), Column("bar", Integer), Index("newtable_idx", "bar"), ) diffs = self._fixture(m1, m2) eq_(diffs[0][0], "add_table") eq_(diffs[1][0], "add_index") eq_( sqla_compat._get_constraint_final_name( diffs[1][1], config.db.dialect ), "ix_extra_foo", ) eq_(diffs[2][0], "add_index") eq_(diffs[2][1].name, "newtable_idx") def test_named_cols_changed(self): m1 = MetaData() m2 = MetaData() Table( "col_change", m1, Column("x", Integer), Column("y", Integer), UniqueConstraint("x", name="nochange"), ) Table( "col_change", m2, Column("x", Integer), Column("y", Integer), UniqueConstraint("x", "y", name="nochange"), ) diffs = self._fixture(m1, m2) if self.reports_unique_constraints: eq_(diffs[0][0], "remove_constraint") eq_(diffs[0][1].name, "nochange") eq_(diffs[1][0], "add_constraint") eq_(diffs[1][1].name, "nochange") else: eq_(diffs, []) def test_nothing_changed_one(self): m1 = MetaData() m2 = MetaData() Table( "nothing_changed", m1, Column("x", String(20), unique=True, index=True), ) Table( "nothing_changed", m2, Column("x", String(20), unique=True, index=True), ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_nothing_changed_implicit_uq_w_naming_conv(self): m1 = MetaData( naming_convention={ "ix": "ix_%(column_0_label)s", "uq": "uq_%(column_0_label)s", } ) m2 = MetaData( naming_convention={ "ix": "ix_%(column_0_label)s", "uq": "uq_%(column_0_label)s", } ) Table( "nothing_changed", m1, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("x", String(20), unique=True), mysql_engine="InnoDB", ) Table( "nothing_changed", m2, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("x", String(20), unique=True), mysql_engine="InnoDB", ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_nothing_uq_changed_labels_were_truncated(self): m1 = MetaData( naming_convention={ "ix": "index_%(table_name)s_%(column_0_label)s", "uq": "unique_%(table_name)s_%(column_0_label)s", } ) m2 = MetaData( naming_convention={ "ix": "index_%(table_name)s_%(column_0_label)s", "uq": "unique_%(table_name)s_%(column_0_label)s", } ) Table( "nothing_changed", m1, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("a_long_name", String(20), unique=True), mysql_engine="InnoDB", ) Table( "nothing_changed", m2, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("a_long_name", String(20), unique=True), mysql_engine="InnoDB", ) diffs = self._fixture(m1, m2, max_identifier_length=30) eq_(diffs, []) def test_nothing_ix_changed_labels_were_truncated(self): m1 = MetaData( naming_convention={ "ix": "index_%(table_name)s_%(column_0_label)s", "uq": "unique_%(table_name)s_%(column_0_label)s", } ) m2 = MetaData( naming_convention={ "ix": "index_%(table_name)s_%(column_0_label)s", "uq": "unique_%(table_name)s_%(column_0_label)s", } ) Table( "nothing_changed", m1, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("a_particularly_long_column_name", String(20), index=True), mysql_engine="InnoDB", ) Table( "nothing_changed", m2, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("a_particularly_long_column_name", String(20), index=True), mysql_engine="InnoDB", ) diffs = self._fixture(m1, m2, max_identifier_length=30) eq_(diffs, []) def test_nothing_changed_uq_w_mixed_case_nconv_name(self): m1 = MetaData( naming_convention={ "ix": "index_%(table_name)s_%(column_0_label)s", "uq": "unique_%(table_name)s_%(column_0_label)s", } ) m2 = MetaData( naming_convention={ "ix": "index_%(table_name)s_%(column_0_label)s", "uq": "unique_%(table_name)s_%(column_0_label)s", } ) Table( "NothingChanged", m1, Column("id", Integer, primary_key=True), Column("XCol", Integer), UniqueConstraint("XCol"), mysql_engine="InnoDB", ) Table( "NothingChanged", m2, Column("id", Integer, primary_key=True), Column("XCol", Integer), UniqueConstraint("XCol"), mysql_engine="InnoDB", ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_nothing_changed_uq_w_mixed_case_plain_name(self): m1 = MetaData() m2 = MetaData() Table( "nothing_changed", m1, Column("id", Integer, primary_key=True), Column("x", Integer), UniqueConstraint("x", name="SomeConstraint"), mysql_engine="InnoDB", ) Table( "nothing_changed", m2, Column("id", Integer, primary_key=True), Column("x", Integer), UniqueConstraint("x", name="SomeConstraint"), mysql_engine="InnoDB", ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_nothing_changed_ix_w_mixed_case_plain_name(self): m1 = MetaData() m2 = MetaData() Table( "nothing_changed", m1, Column("id", Integer, primary_key=True), Column("x", Integer), Index("SomeIndex", "x"), mysql_engine="InnoDB", ) Table( "nothing_changed", m2, Column("id", Integer, primary_key=True), Column("x", Integer), Index("SomeIndex", "x"), mysql_engine="InnoDB", ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_nothing_changed_ix_w_mixed_case_nconv_name(self): m1 = MetaData( naming_convention={ "ix": "index_%(table_name)s_%(column_0_label)s", "uq": "unique_%(table_name)s_%(column_0_label)s", } ) m2 = MetaData( naming_convention={ "ix": "index_%(table_name)s_%(column_0_label)s", "uq": "unique_%(table_name)s_%(column_0_label)s", } ) Table( "NothingChanged", m1, Column("id", Integer, primary_key=True), Column("XCol", Integer, index=True), mysql_engine="InnoDB", ) Table( "NothingChanged", m2, Column("id", Integer, primary_key=True), Column("XCol", Integer, index=True), mysql_engine="InnoDB", ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_nothing_changed_two(self): m1 = MetaData() m2 = MetaData() Table( "nothing_changed", m1, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("x", String(20), unique=True), mysql_engine="InnoDB", ) Table( "nothing_changed_related", m1, Column("id1", Integer), Column("id2", Integer), ForeignKeyConstraint( ["id1", "id2"], ["nothing_changed.id1", "nothing_changed.id2"] ), mysql_engine="InnoDB", ) Table( "nothing_changed", m2, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("x", String(20), unique=True), mysql_engine="InnoDB", ) Table( "nothing_changed_related", m2, Column("id1", Integer), Column("id2", Integer), ForeignKeyConstraint( ["id1", "id2"], ["nothing_changed.id1", "nothing_changed.id2"] ), mysql_engine="InnoDB", ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_nothing_changed_unique_w_colkeys(self): m1 = MetaData() m2 = MetaData() Table( "nothing_changed", m1, Column("x", String(20), key="nx"), UniqueConstraint("nx"), ) Table( "nothing_changed", m2, Column("x", String(20), key="nx"), UniqueConstraint("nx"), ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_nothing_changed_index_w_colkeys(self): m1 = MetaData() m2 = MetaData() Table( "nothing_changed", m1, Column("x", String(20), key="nx"), Index("foobar", "nx"), ) Table( "nothing_changed", m2, Column("x", String(20), key="nx"), Index("foobar", "nx"), ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_nothing_changed_index_named_as_column(self): m1 = MetaData() m2 = MetaData() Table( "nothing_changed", m1, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("x", String(20)), Index("x", "x"), ) Table( "nothing_changed", m2, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("x", String(20)), Index("x", "x"), ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_nothing_changed_implicit_fk_index_named(self): m1 = MetaData() m2 = MetaData() Table( "nothing_changed", m1, Column("id", Integer, primary_key=True), Column( "other_id", ForeignKey("nc2.id", name="fk_my_table_other_table"), nullable=False, ), Column("foo", Integer), mysql_engine="InnoDB", ) Table( "nc2", m1, Column("id", Integer, primary_key=True), mysql_engine="InnoDB", ) Table( "nothing_changed", m2, Column("id", Integer, primary_key=True), Column( "other_id", ForeignKey("nc2.id", name="fk_my_table_other_table"), nullable=False, ), Column("foo", Integer), mysql_engine="InnoDB", ) Table( "nc2", m2, Column("id", Integer, primary_key=True), mysql_engine="InnoDB", ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_nothing_changed_implicit_composite_fk_index_named(self): m1 = MetaData() m2 = MetaData() Table( "nothing_changed", m1, Column("id", Integer, primary_key=True), Column("other_id_1", Integer), Column("other_id_2", Integer), Column("foo", Integer), ForeignKeyConstraint( ["other_id_1", "other_id_2"], ["nc2.id1", "nc2.id2"], name="fk_my_table_other_table", ), mysql_engine="InnoDB", ) Table( "nc2", m1, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), mysql_engine="InnoDB", ) Table( "nothing_changed", m2, Column("id", Integer, primary_key=True), Column("other_id_1", Integer), Column("other_id_2", Integer), Column("foo", Integer), ForeignKeyConstraint( ["other_id_1", "other_id_2"], ["nc2.id1", "nc2.id2"], name="fk_my_table_other_table", ), mysql_engine="InnoDB", ) Table( "nc2", m2, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), mysql_engine="InnoDB", ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_new_idx_index_named_as_column(self): m1 = MetaData() m2 = MetaData() Table( "new_idx", m1, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("x", String(20)), ) idx = Index("x", "x") Table( "new_idx", m2, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("x", String(20)), idx, ) diffs = self._fixture(m1, m2) eq_(diffs, [("add_index", idx)]) def test_removed_idx_index_named_as_column(self): m1 = MetaData() m2 = MetaData() idx = Index("x", "x") Table( "new_idx", m1, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("x", String(20)), idx, ) Table( "new_idx", m2, Column("id1", Integer, primary_key=True), Column("id2", Integer, primary_key=True), Column("x", String(20)), ) diffs = self._fixture(m1, m2) eq_(diffs[0][0], "remove_index") def test_drop_table_w_indexes(self): m1 = MetaData() m2 = MetaData() t = Table( "some_table", m1, Column("id", Integer, primary_key=True), Column("x", String(20)), Column("y", String(20)), ) Index("xy_idx", t.c.x, t.c.y) Index("y_idx", t.c.y) diffs = self._fixture(m1, m2) eq_(diffs[0][0], "remove_index") eq_(diffs[1][0], "remove_index") eq_(diffs[2][0], "remove_table") eq_( set([diffs[0][1].name, diffs[1][1].name]), set(["xy_idx", "y_idx"]) ) def test_drop_table_w_uq_constraint(self): m1 = MetaData() m2 = MetaData() Table( "some_table", m1, Column("id", Integer, primary_key=True), Column("x", String(20)), Column("y", String(20)), UniqueConstraint("y", name="uq_y"), ) diffs = self._fixture(m1, m2) if self.reports_unique_constraints_as_indexes: # for MySQL this UQ will look like an index, so # make sure it at least sets it up correctly eq_(diffs[0][0], "remove_index") eq_(diffs[1][0], "remove_table") eq_(len(diffs), 2) constraints = [ c for c in diffs[1][1].constraints if isinstance(c, UniqueConstraint) ] eq_(len(constraints), 0) else: eq_(diffs[0][0], "remove_table") eq_(len(diffs), 1) constraints = [ c for c in diffs[0][1].constraints if isinstance(c, UniqueConstraint) ] if self.reports_unique_constraints: eq_(len(constraints), 1) def test_unnamed_cols_changed(self): m1 = MetaData() m2 = MetaData() Table( "col_change", m1, Column("x", Integer), Column("y", Integer), UniqueConstraint("x"), ) Table( "col_change", m2, Column("x", Integer), Column("y", Integer), UniqueConstraint("x", "y"), ) diffs = self._fixture(m1, m2) diffs = set( (cmd, ("x" in obj.name) if obj.name is not None else False) for cmd, obj in diffs ) if self.reports_unnamed_constraints: if self.reports_unique_constraints_as_indexes: eq_( diffs, set([("remove_index", True), ("add_constraint", False)]), ) else: eq_( diffs, set( [ ("remove_constraint", True), ("add_constraint", False), ] ), ) def test_remove_named_unique_index(self): m1 = MetaData() m2 = MetaData() Table( "remove_idx", m1, Column("x", Integer), Index("xidx", "x", unique=True), ) Table("remove_idx", m2, Column("x", Integer)) diffs = self._fixture(m1, m2) if self.reports_unique_constraints: diffs = set((cmd, obj.name) for cmd, obj in diffs) eq_(diffs, set([("remove_index", "xidx")])) else: eq_(diffs, []) def test_remove_named_unique_constraint(self): m1 = MetaData() m2 = MetaData() Table( "remove_idx", m1, Column("x", Integer), UniqueConstraint("x", name="xidx"), ) Table("remove_idx", m2, Column("x", Integer)) diffs = self._fixture(m1, m2) if self.reports_unique_constraints: diffs = set((cmd, obj.name) for cmd, obj in diffs) if self.reports_unique_constraints_as_indexes: eq_(diffs, set([("remove_index", "xidx")])) else: eq_(diffs, set([("remove_constraint", "xidx")])) else: eq_(diffs, []) def test_dont_add_uq_on_table_create(self): m1 = MetaData() m2 = MetaData() Table("no_uq", m2, Column("x", String(50), unique=True)) diffs = self._fixture(m1, m2) eq_(diffs[0][0], "add_table") eq_(len(diffs), 1) assert UniqueConstraint in set( type(c) for c in diffs[0][1].constraints ) def test_add_uq_ix_on_table_create(self): m1 = MetaData() m2 = MetaData() Table("add_ix", m2, Column("x", String(50), unique=True, index=True)) diffs = self._fixture(m1, m2) eq_(diffs[0][0], "add_table") eq_(len(diffs), 2) assert UniqueConstraint not in set( type(c) for c in diffs[0][1].constraints ) eq_(diffs[1][0], "add_index") eq_(diffs[1][1].unique, True) def test_add_ix_on_table_create(self): m1 = MetaData() m2 = MetaData() Table("add_ix", m2, Column("x", String(50), index=True)) diffs = self._fixture(m1, m2) eq_(diffs[0][0], "add_table") eq_(len(diffs), 2) assert UniqueConstraint not in set( type(c) for c in diffs[0][1].constraints ) eq_(diffs[1][0], "add_index") eq_(diffs[1][1].unique, False) def test_add_idx_non_col(self): m1 = MetaData() m2 = MetaData() Table("add_ix", m1, Column("x", String(50))) t2 = Table("add_ix", m2, Column("x", String(50))) Index("foo_idx", t2.c.x.desc()) diffs = self._fixture(m1, m2) eq_(diffs[0][0], "add_index") def test_unchanged_idx_non_col(self): m1 = MetaData() m2 = MetaData() t1 = Table("add_ix", m1, Column("x", String(50))) Index("foo_idx", t1.c.x.desc()) t2 = Table("add_ix", m2, Column("x", String(50))) Index("foo_idx", t2.c.x.desc()) diffs = self._fixture(m1, m2) eq_(diffs, []) # fails in the 0.8 series where we have truncation rules, # but no control over quoting. passes in 0.7.9 where we don't have # truncation rules either. dropping these ancient versions # is long overdue. def test_unchanged_case_sensitive_implicit_idx(self): m1 = MetaData() m2 = MetaData() Table("add_ix", m1, Column("regNumber", String(50), index=True)) Table("add_ix", m2, Column("regNumber", String(50), index=True)) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_unchanged_case_sensitive_explicit_idx(self): m1 = MetaData() m2 = MetaData() t1 = Table("add_ix", m1, Column("reg_number", String(50))) Index("regNumber_idx", t1.c.reg_number) t2 = Table("add_ix", m2, Column("reg_number", String(50))) Index("regNumber_idx", t2.c.reg_number) diffs = self._fixture(m1, m2) eq_(diffs, []) class PGUniqueIndexTest(AutogenerateUniqueIndexTest): reports_unnamed_constraints = True __only_on__ = "postgresql" __backend__ = True def test_idx_added_schema(self): m1 = MetaData() m2 = MetaData() Table("add_ix", m1, Column("x", String(50)), schema="test_schema") Table( "add_ix", m2, Column("x", String(50)), Index("ix_1", "x"), schema="test_schema", ) diffs = self._fixture(m1, m2, include_schemas=True) eq_(diffs[0][0], "add_index") eq_(diffs[0][1].name, "ix_1") def test_idx_unchanged_schema(self): m1 = MetaData() m2 = MetaData() Table( "add_ix", m1, Column("x", String(50)), Index("ix_1", "x"), schema="test_schema", ) Table( "add_ix", m2, Column("x", String(50)), Index("ix_1", "x"), schema="test_schema", ) diffs = self._fixture(m1, m2, include_schemas=True) eq_(diffs, []) def test_uq_added_schema(self): m1 = MetaData() m2 = MetaData() Table("add_uq", m1, Column("x", String(50)), schema="test_schema") Table( "add_uq", m2, Column("x", String(50)), UniqueConstraint("x", name="ix_1"), schema="test_schema", ) diffs = self._fixture(m1, m2, include_schemas=True) eq_(diffs[0][0], "add_constraint") eq_(diffs[0][1].name, "ix_1") def test_uq_unchanged_schema(self): m1 = MetaData() m2 = MetaData() Table( "add_uq", m1, Column("x", String(50)), UniqueConstraint("x", name="ix_1"), schema="test_schema", ) Table( "add_uq", m2, Column("x", String(50)), UniqueConstraint("x", name="ix_1"), schema="test_schema", ) diffs = self._fixture(m1, m2, include_schemas=True) eq_(diffs, []) @config.requirements.btree_gist def test_exclude_const_unchanged(self): from sqlalchemy.dialects.postgresql import TSRANGE, ExcludeConstraint m1 = MetaData() m2 = MetaData() Table( "add_excl", m1, Column("id", Integer, primary_key=True), Column("period", TSRANGE), ExcludeConstraint(("period", "&&"), name="quarters_period_excl"), ) Table( "add_excl", m2, Column("id", Integer, primary_key=True), Column("period", TSRANGE), ExcludeConstraint(("period", "&&"), name="quarters_period_excl"), ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_same_tname_two_schemas(self): m1 = MetaData() m2 = MetaData() Table("add_ix", m1, Column("x", String(50)), Index("ix_1", "x")) Table("add_ix", m2, Column("x", String(50)), Index("ix_1", "x")) Table("add_ix", m2, Column("x", String(50)), schema="test_schema") diffs = self._fixture(m1, m2, include_schemas=True) eq_(diffs[0][0], "add_table") eq_(len(diffs), 1) def test_uq_dropped(self): m1 = MetaData() m2 = MetaData() Table( "add_uq", m1, Column("id", Integer, primary_key=True), Column("name", String), UniqueConstraint("name", name="uq_name"), ) Table( "add_uq", m2, Column("id", Integer, primary_key=True), Column("name", String), ) diffs = self._fixture(m1, m2, include_schemas=True) eq_(diffs[0][0], "remove_constraint") eq_(diffs[0][1].name, "uq_name") eq_(len(diffs), 1) def test_functional_ix_one(self): m1 = MetaData() m2 = MetaData() t1 = Table( "foo", m1, Column("id", Integer, primary_key=True), Column("email", String(50)), ) Index("email_idx", func.lower(t1.c.email), unique=True) t2 = Table( "foo", m2, Column("id", Integer, primary_key=True), Column("email", String(50)), ) Index("email_idx", func.lower(t2.c.email), unique=True) with assertions.expect_warnings( "Skipped unsupported reflection", "autogenerate skipping functional index", ): diffs = self._fixture(m1, m2) eq_(diffs, []) def test_functional_ix_two(self): m1 = MetaData() m2 = MetaData() t1 = Table( "foo", m1, Column("id", Integer, primary_key=True), Column("email", String(50)), Column("name", String(50)), ) Index( "email_idx", func.coalesce(t1.c.email, t1.c.name).desc(), unique=True, ) t2 = Table( "foo", m2, Column("id", Integer, primary_key=True), Column("email", String(50)), Column("name", String(50)), ) Index( "email_idx", func.coalesce(t2.c.email, t2.c.name).desc(), unique=True, ) with assertions.expect_warnings( "Skipped unsupported reflection", "autogenerate skipping functional index", ): diffs = self._fixture(m1, m2) eq_(diffs, []) class MySQLUniqueIndexTest(AutogenerateUniqueIndexTest): reports_unnamed_constraints = True reports_unique_constraints_as_indexes = True __only_on__ = "mysql" __backend__ = True def test_removed_idx_index_named_as_column(self): try: super( MySQLUniqueIndexTest, self ).test_removed_idx_index_named_as_column() except IndexError: assert True else: assert False, "unexpected success" class OracleUniqueIndexTest(AutogenerateUniqueIndexTest): reports_unnamed_constraints = True reports_unique_constraints_as_indexes = True __only_on__ = "oracle" __backend__ = True class NoUqReflectionIndexTest(NoUqReflection, AutogenerateUniqueIndexTest): reports_unique_constraints = False __only_on__ = "sqlite" def test_unique_not_reported(self): m1 = MetaData() Table( "order", m1, Column("order_id", Integer, primary_key=True), Column("amount", Numeric(10, 2), nullable=True), Column("user_id", Integer), UniqueConstraint( "order_id", "user_id", name="order_order_id_user_id_unique" ), ) diffs = self._fixture(m1, m1) eq_(diffs, []) def test_remove_unique_index_not_reported(self): m1 = MetaData() Table( "order", m1, Column("order_id", Integer, primary_key=True), Column("amount", Numeric(10, 2), nullable=True), Column("user_id", Integer), Index("oid_ix", "order_id", "user_id", unique=True), ) m2 = MetaData() Table( "order", m2, Column("order_id", Integer, primary_key=True), Column("amount", Numeric(10, 2), nullable=True), Column("user_id", Integer), ) diffs = self._fixture(m1, m2) eq_(diffs, []) def test_remove_plain_index_is_reported(self): m1 = MetaData() Table( "order", m1, Column("order_id", Integer, primary_key=True), Column("amount", Numeric(10, 2), nullable=True), Column("user_id", Integer), Index("oid_ix", "order_id", "user_id"), ) m2 = MetaData() Table( "order", m2, Column("order_id", Integer, primary_key=True), Column("amount", Numeric(10, 2), nullable=True), Column("user_id", Integer), ) diffs = self._fixture(m1, m2) eq_(diffs[0][0], "remove_index") class NoUqReportsIndAsUqTest(NoUqReflectionIndexTest): """this test suite simulates the condition where: a. the dialect doesn't report unique constraints b. the dialect returns unique constraints within the indexes list. Currently the mssql dialect does this, but here we force this condition so that we can test the behavior regardless of if/when mssql supports unique constraint reflection. """ __only_on__ = "sqlite" @classmethod def _get_bind(cls): eng = config.db _get_unique_constraints = eng.dialect.get_unique_constraints _get_indexes = eng.dialect.get_indexes def unimpl(*arg, **kw): raise NotImplementedError() def get_indexes(self, connection, tablename, **kw): indexes = _get_indexes(self, connection, tablename, **kw) for uq in _get_unique_constraints( self, connection, tablename, **kw ): uq["unique"] = True indexes.append(uq) return indexes eng.dialect.get_unique_constraints = unimpl eng.dialect.get_indexes = get_indexes return eng class IncludeHooksTest(AutogenFixtureTest, TestBase): __backend__ = True def test_remove_connection_index(self): m1 = MetaData() m2 = MetaData() t1 = Table("t", m1, Column("x", Integer), Column("y", Integer)) Index("ix1", t1.c.x) Index("ix2", t1.c.y) Table("t", m2, Column("x", Integer), Column("y", Integer)) def include_object(object_, name, type_, reflected, compare_to): if type_ == "unique_constraint": return False return not ( isinstance(object_, Index) and type_ == "index" and reflected and name == "ix1" ) diffs = self._fixture(m1, m2, object_filters=include_object) eq_(diffs[0][0], "remove_index") eq_(diffs[0][1].name, "ix2") eq_(len(diffs), 1) @config.requirements.unique_constraint_reflection @config.requirements.reflects_unique_constraints_unambiguously def test_remove_connection_uq(self): m1 = MetaData() m2 = MetaData() Table( "t", m1, Column("x", Integer), Column("y", Integer), UniqueConstraint("x", name="uq1"), UniqueConstraint("y", name="uq2"), ) Table("t", m2, Column("x", Integer), Column("y", Integer)) def include_object(object_, name, type_, reflected, compare_to): if type_ == "index": return False return not ( isinstance(object_, UniqueConstraint) and type_ == "unique_constraint" and reflected and name == "uq1" ) diffs = self._fixture(m1, m2, object_filters=include_object) eq_(diffs[0][0], "remove_constraint") eq_(diffs[0][1].name, "uq2") eq_(len(diffs), 1) def test_add_metadata_index(self): m1 = MetaData() m2 = MetaData() Table("t", m1, Column("x", Integer)) t2 = Table("t", m2, Column("x", Integer)) Index("ix1", t2.c.x) Index("ix2", t2.c.x) def include_object(object_, name, type_, reflected, compare_to): return not ( isinstance(object_, Index) and type_ == "index" and not reflected and name == "ix1" ) diffs = self._fixture(m1, m2, object_filters=include_object) eq_(diffs[0][0], "add_index") eq_(diffs[0][1].name, "ix2") eq_(len(diffs), 1) @config.requirements.unique_constraint_reflection def test_add_metadata_unique(self): m1 = MetaData() m2 = MetaData() Table("t", m1, Column("x", Integer)) Table( "t", m2, Column("x", Integer), UniqueConstraint("x", name="uq1"), UniqueConstraint("x", name="uq2"), ) def include_object(object_, name, type_, reflected, compare_to): return not ( isinstance(object_, UniqueConstraint) and type_ == "unique_constraint" and not reflected and name == "uq1" ) diffs = self._fixture(m1, m2, object_filters=include_object) eq_(diffs[0][0], "add_constraint") eq_(diffs[0][1].name, "uq2") eq_(len(diffs), 1) def test_change_index(self): m1 = MetaData() m2 = MetaData() t1 = Table( "t", m1, Column("x", Integer), Column("y", Integer), Column("z", Integer), ) Index("ix1", t1.c.x) Index("ix2", t1.c.y) t2 = Table( "t", m2, Column("x", Integer), Column("y", Integer), Column("z", Integer), ) Index("ix1", t2.c.x, t2.c.y) Index("ix2", t2.c.x, t2.c.z) def include_object(object_, name, type_, reflected, compare_to): return not ( isinstance(object_, Index) and type_ == "index" and not reflected and name == "ix1" and isinstance(compare_to, Index) ) diffs = self._fixture(m1, m2, object_filters=include_object) eq_(diffs[0][0], "remove_index") eq_(diffs[0][1].name, "ix2") eq_(diffs[1][0], "add_index") eq_(diffs[1][1].name, "ix2") eq_(len(diffs), 2) @config.requirements.unique_constraint_reflection def test_change_unique(self): m1 = MetaData() m2 = MetaData() Table( "t", m1, Column("x", Integer), Column("y", Integer), Column("z", Integer), UniqueConstraint("x", name="uq1"), UniqueConstraint("y", name="uq2"), ) Table( "t", m2, Column("x", Integer), Column("y", Integer), Column("z", Integer), UniqueConstraint("x", "z", name="uq1"), UniqueConstraint("y", "z", name="uq2"), ) def include_object(object_, name, type_, reflected, compare_to): if type_ == "index": return False return not ( isinstance(object_, UniqueConstraint) and type_ == "unique_constraint" and not reflected and name == "uq1" and isinstance(compare_to, UniqueConstraint) ) diffs = self._fixture(m1, m2, object_filters=include_object) eq_(diffs[0][0], "remove_constraint") eq_(diffs[0][1].name, "uq2") eq_(diffs[1][0], "add_constraint") eq_(diffs[1][1].name, "uq2") eq_(len(diffs), 2) class TruncatedIdxTest(AutogenFixtureTest, TestBase): def setUp(self): self.bind = engines.testing_engine() self.bind.dialect.max_identifier_length = 30 def test_idx_matches_long(self): from alembic.operations.base import conv m1 = MetaData() Table( "q", m1, Column("id", Integer, primary_key=True), Column("data", Integer), Index( conv("idx_q_table_this_is_more_than_thirty_characters"), "data" ), ) diffs = self._fixture(m1, m1) eq_(diffs, [])