python-dependency-injector/examples/config_provider.py
2015-01-28 13:08:54 +02:00

67 lines
1.6 KiB
Python

"""
Config provider examples.
"""
from objects import AbstractCatalog
from objects.providers import Config, NewInstance
from objects.injections import InitArg
# Some example class.
class ObjectA(object):
def __init__(self, setting_one, setting_two, setting_three):
self.setting_one = setting_one
self.setting_two = setting_two
self.setting_three = setting_three
# Catalog of objects providers.
class Catalog(AbstractCatalog):
"""
Objects catalog.
"""
config = Config()
""" :type: (objects.Config) """
object_a = NewInstance(ObjectA,
InitArg('setting_one', config.SETTING_ONE),
InitArg('setting_two', config.SETTING_TWO),
InitArg('setting_three', config.GLOBAL.SETTING_THREE))
""" :type: (objects.Provider) -> ObjectA """
# Setting config value and making some tests.
Catalog.config.update_from({
'SETTING_ONE': 1,
'SETTING_TWO': 2,
'GLOBAL': {
'SETTING_THREE': 3
}
})
object_a1 = Catalog.object_a()
assert object_a1.setting_one == 1
assert object_a1.setting_two == 2
assert object_a1.setting_three == 3
# Changing config value one more time and making some tests.
Catalog.config.update_from({
'SETTING_ONE': 11,
'SETTING_TWO': 22,
'GLOBAL': {
'SETTING_THREE': 33
}
})
object_a2 = Catalog.object_a()
assert object_a2.setting_one == 11
assert object_a2.setting_two == 22
assert object_a2.setting_three == 33
assert object_a1.setting_one == 1
assert object_a1.setting_two == 2
assert object_a1.setting_three == 3