mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2024-11-22 09:36:48 +03:00
43 lines
1021 B
Python
43 lines
1021 B
Python
"""
|
|
Callable provider examples.
|
|
"""
|
|
|
|
from objects import AbstractCatalog
|
|
from objects.providers import Singleton, Callable
|
|
from objects.injections import Injection, InitArg, Attribute
|
|
|
|
import sqlite3
|
|
|
|
|
|
# Some example function.
|
|
def consuming_function(arg, db):
|
|
return arg, db
|
|
|
|
|
|
# Catalog of objects providers.
|
|
class Catalog(AbstractCatalog):
|
|
"""
|
|
Objects catalog.
|
|
"""
|
|
|
|
database = Singleton(sqlite3.Connection,
|
|
InitArg('database', ':memory:'),
|
|
Attribute('row_factory', sqlite3.Row))
|
|
""" :type: (objects.Provider) -> sqlite3.Connection """
|
|
|
|
consuming_function = Callable(consuming_function,
|
|
Injection('db', database))
|
|
""" :type: (objects.Provider) -> consuming_function """
|
|
|
|
|
|
# Some calls.
|
|
arg1, db1 = Catalog.consuming_function(1)
|
|
arg2, db2 = Catalog.consuming_function(2)
|
|
arg3, db3 = Catalog.consuming_function(3)
|
|
|
|
# Some asserts.
|
|
assert db1 is db2 is db3
|
|
assert arg1 == 1
|
|
assert arg2 == 2
|
|
assert arg3 == 3
|