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import inspect
import sys
import types
import sqlalchemy as sa
import sqlalchemy.exceptions as sa_exc
from sqlalchemy.test import config, testing
from sqlalchemy.test.testing import resolve_artifact_names, adict
from sqlalchemy.test.engines import drop_all_tables
from sqlalchemy.util import function_named
from sqlalchemy.test.entities import BasicEntity, ComparableEntity
Entity = BasicEntity
class ORMTest(testing.TestBase, testing.AssertsExecutionResults):
__requires__ = ('subqueries',)
@classmethod
def teardown_class(cls):
sa.orm.session.Session.close_all()
sa.orm.clear_mappers()
# TODO: ensure mapper registry is empty
# TODO: ensure instrumentation registry is empty
class MappedTest(ORMTest):
# 'once', 'each', None
run_define_tables = 'once'
# 'once', 'each', None
run_setup_classes = 'once'
# 'once', 'each', None
run_setup_mappers = 'each'
# 'once', 'each', None
run_inserts = 'each'
# 'each', None
run_deletes = 'each'
metadata = None
_artifact_registries = ('tables', 'classes', 'other_artifacts')
tables = None
classes = None
other_artifacts = None
@classmethod
def setup_class(cls):
if cls.run_setup_classes == 'each':
assert cls.run_setup_mappers != 'once'
assert cls.run_deletes in (None, 'each')
if cls.run_inserts == 'once':
assert cls.run_deletes is None
assert not hasattr(cls, 'keep_mappers')
assert not hasattr(cls, 'keep_data')
if cls.tables is None:
cls.tables = adict()
if cls.classes is None:
cls.classes = adict()
if cls.other_artifacts is None:
cls.other_artifacts = adict()
if cls.metadata is None:
setattr(cls, 'metadata', sa.MetaData())
if cls.metadata.bind is None:
cls.metadata.bind = getattr(cls, 'engine', config.db)
if cls.run_define_tables == 'once':
cls.define_tables(cls.metadata)
cls.metadata.create_all()
cls.tables.update(cls.metadata.tables)
if cls.run_setup_classes == 'once':
baseline = subclasses(BasicEntity)
cls.setup_classes()
cls._register_new_class_artifacts(baseline)
if cls.run_setup_mappers == 'once':
baseline = subclasses(BasicEntity)
cls.setup_mappers()
cls._register_new_class_artifacts(baseline)
if cls.run_inserts == 'once':
cls._load_fixtures()
cls.insert_data()
def setup(self):
if self.run_define_tables == 'each':
self.tables.clear()
drop_all_tables(self.metadata)
self.metadata.clear()
self.define_tables(self.metadata)
self.metadata.create_all()
self.tables.update(self.metadata.tables)
if self.run_setup_classes == 'each':
self.classes.clear()
baseline = subclasses(BasicEntity)
self.setup_classes()
self._register_new_class_artifacts(baseline)
if self.run_setup_mappers == 'each':
baseline = subclasses(BasicEntity)
self.setup_mappers()
self._register_new_class_artifacts(baseline)
if self.run_inserts == 'each':
self._load_fixtures()
self.insert_data()
def teardown(self):
sa.orm.session.Session.close_all()
# some tests create mappers in the test bodies
# and will define setup_mappers as None -
# clear mappers in any case
if self.run_setup_mappers != 'once':
sa.orm.clear_mappers()
# no need to run deletes if tables are recreated on setup
if self.run_define_tables != 'each' and self.run_deletes:
for table in reversed(self.metadata.sorted_tables):
try:
table.delete().execute().close()
except sa.exc.DBAPIError, ex:
print >> sys.stderr, "Error emptying table %s: %r" % (
table, ex)
@classmethod
def teardown_class(cls):
for cl in cls.classes.values():
cls.unregister_class(cl)
ORMTest.teardown_class()
drop_all_tables(cls.metadata)
cls.metadata.bind = None
@classmethod
def define_tables(cls, metadata):
raise NotImplementedError()
@classmethod
def setup_classes(cls):
pass
@classmethod
def setup_mappers(cls):
pass
@classmethod
def fixtures(cls):
return {}
@classmethod
def insert_data(cls):
pass
def sql_count_(self, count, fn):
self.assert_sql_count(self.metadata.bind, fn, count)
def sql_eq_(self, callable_, statements, with_sequences=None):
self.assert_sql(self.metadata.bind,
callable_, statements, with_sequences)
@classmethod
def _register_new_class_artifacts(cls, baseline):
for class_ in subclasses(BasicEntity) - baseline:
cls.register_class(class_)
@classmethod
def register_class(cls, class_):
name = class_.__name__
if name[0].isupper:
setattr(cls, name, class_)
cls.classes[name] = class_
@classmethod
def unregister_class(cls, class_):
name = class_.__name__
if name[0].isupper:
delattr(cls, name)
del cls.classes[name]
@classmethod
def _load_fixtures(cls):
headers, rows = {}, {}
for table, data in cls.fixtures().iteritems():
if isinstance(table, basestring):
table = cls.tables[table]
headers[table] = data[0]
rows[table] = data[1:]
for table in cls.metadata.sorted_tables:
if table not in headers:
continue
table.bind.execute(
table.insert(),
[dict(zip(headers[table], column_values))
for column_values in rows[table]])
def subclasses(cls):
subs, process = set(), set(cls.__subclasses__())
while process:
cls = process.pop()
if cls not in subs:
subs.add(cls)
process |= set(cls.__subclasses__())
return subs
|
