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from sqlalchemy.testing.requirements import Requirements from alembic import util from alembic.util import sqla_compat from ..testing import exclusions class SuiteRequirements(Requirements): @property def schemas(self): """Target database must support external schemas, and have one named 'test_schema'.""" return exclusions.open() @property def autocommit_isolation(self): """target database should support 'AUTOCOMMIT' isolation level""" return exclusions.closed() @property def materialized_views(self): """needed for sqlalchemy compat""" return exclusions.closed() @property def unique_constraint_reflection(self): def doesnt_have_check_uq_constraints(config): from sqlalchemy import inspect insp = inspect(config.db) try: insp.get_unique_constraints("x") except NotImplementedError: return True except TypeError: return True except Exception: pass return False return exclusions.skip_if(doesnt_have_check_uq_constraints) @property def sequences(self): """Target database must support SEQUENCEs.""" return exclusions.only_if( [lambda config: config.db.dialect.supports_sequences], "no sequence support", ) @property def foreign_key_match(self): return exclusions.open() @property def foreign_key_constraint_reflection(self): return exclusions.open() @property def check_constraints_w_enforcement(self): """Target database must support check constraints and also enforce them.""" return exclusions.open() @property def reflects_pk_names(self): return exclusions.closed() @property def reflects_fk_options(self): return exclusions.closed() @property def sqlalchemy_14(self): return exclusions.skip_if( lambda config: not util.sqla_14, "SQLAlchemy 1.4 or greater required", ) @property def sqlalchemy_1x(self): return exclusions.skip_if( lambda config: util.sqla_2, "SQLAlchemy 1.x test", ) @property def sqlalchemy_2(self): return exclusions.skip_if( lambda config: not util.sqla_2, "SQLAlchemy 2.x test", ) @property def asyncio(self): def go(config): try: import greenlet # noqa: F401 except ImportError: return False else: return True return self.sqlalchemy_14 + exclusions.only_if(go) @property def comments(self): return exclusions.only_if( lambda config: config.db.dialect.supports_comments ) @property def alter_column(self): return exclusions.open() @property def computed_columns(self): return exclusions.closed() @property def computed_columns_api(self): return exclusions.only_if( exclusions.BooleanPredicate(sqla_compat.has_computed) ) @property def computed_reflects_normally(self): return exclusions.only_if( exclusions.BooleanPredicate(sqla_compat.has_computed_reflection) ) @property def computed_reflects_as_server_default(self): return exclusions.closed() @property def computed_doesnt_reflect_as_server_default(self): return exclusions.closed() @property def autoincrement_on_composite_pk(self): return exclusions.closed() @property def fk_ondelete_is_reflected(self): return exclusions.closed() @property def fk_onupdate_is_reflected(self): return exclusions.closed() @property def fk_onupdate(self): return exclusions.open() @property def fk_ondelete_restrict(self): return exclusions.open() @property def fk_onupdate_restrict(self): return exclusions.open() @property def fk_ondelete_noaction(self): return exclusions.open() @property def fk_initially(self): return exclusions.closed() @property def fk_deferrable(self): return exclusions.closed() @property def fk_deferrable_is_reflected(self): return exclusions.closed() @property def fk_names(self): return exclusions.open() @property def integer_subtype_comparisons(self): return exclusions.open() @property def no_name_normalize(self): return exclusions.skip_if( lambda config: config.db.dialect.requires_name_normalize ) @property def identity_columns(self): return exclusions.closed() @property def identity_columns_alter(self): return exclusions.closed() @property def identity_columns_api(self): return exclusions.only_if( exclusions.BooleanPredicate(sqla_compat.has_identity) )
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