Add example for config.from_value()

examples/providers/configuration/configuration_value.py

@@ -0,0 +1,24 @@
+"""`Configuration` provider values loading example."""
+
+from datetime import date
+
+from dependency_injector import containers, providers
+
+
+class Container(containers.DeclarativeContainer):
+
+    config = providers.Configuration()
+
+
+if __name__ == '__main__':
+    container = Container()
+
+    container.config.option1.from_value(date(2021, 6, 13))
+    container.config.option2.from_value(date(2021, 6, 14))
+
+    assert container.config() == {
+        'option1': date(2021, 6, 13),
+        'option2': date(2021, 6, 14),
+    }
+    assert container.config.option1() == date(2021, 6, 13)
+    assert container.config.option2() == date(2021, 6, 14)