def test_initialize_applications():
def apps():
return {'mine':MyApp, 'app': SimpleApp, 'app2': SimpleApp,
'obj':tuple}
def failing_apps():
return OrderedDict((('foo', SimpleApp), ('spam', lambda: 1/0)))
db = DB(DemoStorage())
initialize_applications(db, apps)
conn = db.open()
root = conn.root()
assert root['mine']() == "running !"
assert root['app']() == "simply running !"
assert root['app2']() == "simply running !"
assert isinstance(root['obj'], tuple)
transaction.abort()
conn.close()
# verify it's all or nothing
try:
initialize_applications(db, failing_apps)
except ZeroDivisionError:
pass
conn = db.open()
root = conn.root()
assert 'foo' not in root
conn.close()
def second_init():
with EntryPointMocker(['myapp=cromlech.zodb.tests.test_initialize:MyApp']):
db = DB(DemoStorage())
utils.initialize_applications(db)
conn = db.open()
app = conn.root()['myapp']
# again
utils.initialize_applications(db)
conn = db.open()
assert app is conn.root()['myapp']
def test_initialize():
with EntryPointMocker(['myapp=cromlech.zodb.tests.test_initialize:MyApp',
'yourapp=cromlech.zodb.tests.test_initialize:YourApp']):
db = DB(DemoStorage())
utils.initialize_applications(db)
conn = db.open()
assert 'myapp' in conn.root()
assert isinstance(conn.root()['myapp'], MyApp)
assert conn.root()['myapp']() == 'running !'
assert 'yourapp' in conn.root()
assert isinstance(conn.root()['yourapp'], YourApp)
assert conn.root()['yourapp']() == 'Also running !'
def test_same_name_fails():
with EntryPointMocker(['myapp=cromlech.zodb.tests.test_initialize:MyApp',
'myapp=cromlech.zodb.tests.test_initialize:MyApp']):
db = DB(DemoStorage())
with pytest.raises(KeyError):
utils.initialize_applications(db)
def test_no_implementation_fails():
with EntryPointMocker(
['myapp=cromlech.zodb.tests.test_initialize:NotExistingApp']):
db = DB(DemoStorage())
with pytest.raises(ImportError):
utils.initialize_applications(db)
