public void nested_container_disposal()
{
var container = new Container(_ =>
{
// A SingletonThing scoped service
_.ForSingletonOf <IColorCache>().Use <ColorCache>();
// A transient scoped service
_.For <IColor>().Use <Green>();
// An AlwaysUnique scoped service
_.For <Purple>().AlwaysUnique();
});
ColorCache singleton = null;
Green nestedGreen = null;
Blue nestedBlue = null;
Purple nestedPurple = null;
using (var nested = container.GetNestedContainer())
{
// SingletonThing's are really built by the parent
singleton = nested.GetInstance <IColorCache>()
.ShouldBeOfType <ColorCache>();
nestedGreen = nested.GetInstance <IColor>()
.ShouldBeOfType <Green>();
nestedBlue = nested.GetInstance <Blue>();
nestedPurple = nested.GetInstance <Purple>();
}
// Transients created by the Nested Container
// are disposed
nestedGreen.WasDisposed.ShouldBeTrue();
nestedBlue.WasDisposed.ShouldBeTrue();
// Unique's created by the Nested Container
// are disposed
nestedPurple.WasDisposed.ShouldBeTrue();
// NOT disposed because it's owned by
// the parent container
singleton.WasDisposed.ShouldBeFalse();
}
public void build_nested_container_with_defaults()
{
var container = new Container(_ =>
{
_.For <Blue>().Use <Blue>();
_.For <IWidget>().Use <DefaultWidget>();
_.For <Rule>().Use <ARule>();
});
var nestedWidget = new AWidget();
var nestedBlue = new Blue();
var arguments = new TypeArguments().Set(nestedBlue).Set <IWidget>(nestedWidget);
var nested = container.GetNestedContainer(arguments);
nested.GetInstance <IWidget>().ShouldBeTheSameAs(nestedWidget);
nested.GetInstance <Blue>().ShouldBeTheSameAs(nestedBlue);
// fallback to the parent w/ no defaults
nested.GetInstance <Rule>().ShouldBeOfType <ARule>();
// main container is not corrupted by the nested registrations
container.GetInstance <IWidget>().ShouldBeOfType <DefaultWidget>();
}