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|
//! Scope configurator for a binding for types inside of a [`AsyncDIContainer`].
use std::marker::PhantomData;
use crate::di_container::asynchronous::binding::when_configurator::AsyncBindingWhenConfigurator;
use crate::di_container::BindingOptions;
use crate::errors::async_di_container::AsyncBindingScopeConfiguratorError;
use crate::interfaces::async_injectable::AsyncInjectable;
use crate::provider::r#async::{AsyncSingletonProvider, AsyncTransientTypeProvider};
use crate::ptr::ThreadsafeSingletonPtr;
use crate::util::use_double;
use_double!(crate::dependency_history::DependencyHistory);
use_double!(crate::di_container::asynchronous::AsyncDIContainer);
/// Scope configurator for a binding for type `Interface` inside a [`AsyncDIContainer`].
pub struct AsyncBindingScopeConfigurator<'di_container, Interface, Implementation>
where
Interface: 'static + ?Sized + Send + Sync,
Implementation: AsyncInjectable<AsyncDIContainer>,
{
di_container: &'di_container AsyncDIContainer,
dependency_history_factory: fn() -> DependencyHistory,
interface_phantom: PhantomData<Interface>,
implementation_phantom: PhantomData<Implementation>,
}
impl<'di_container, Interface, Implementation>
AsyncBindingScopeConfigurator<'di_container, Interface, Implementation>
where
Interface: 'static + ?Sized + Send + Sync,
Implementation: AsyncInjectable<AsyncDIContainer>,
{
pub(crate) fn new(
di_container: &'di_container AsyncDIContainer,
dependency_history_factory: fn() -> DependencyHistory,
) -> Self
{
Self {
di_container,
dependency_history_factory,
interface_phantom: PhantomData,
implementation_phantom: PhantomData,
}
}
/// Configures the binding to be in a transient scope.
///
/// This is the default.
pub async fn in_transient_scope(
self,
) -> AsyncBindingWhenConfigurator<'di_container, Interface>
{
self.set_in_transient_scope().await;
AsyncBindingWhenConfigurator::new(self.di_container)
}
/// Configures the binding to be in a singleton scope.
///
/// # Errors
/// Will return Err if resolving the implementation fails.
pub async fn in_singleton_scope(
self,
) -> Result<
AsyncBindingWhenConfigurator<'di_container, Interface>,
AsyncBindingScopeConfiguratorError,
>
{
let singleton: ThreadsafeSingletonPtr<Implementation> =
ThreadsafeSingletonPtr::from(
Implementation::resolve(
self.di_container,
(self.dependency_history_factory)(),
)
.await
.map_err(AsyncBindingScopeConfiguratorError::SingletonResolveFailed)?,
);
self.di_container
.set_binding::<Interface>(
BindingOptions::new(),
Box::new(AsyncSingletonProvider::new(singleton)),
)
.await;
Ok(AsyncBindingWhenConfigurator::new(self.di_container))
}
pub(crate) async fn set_in_transient_scope(&self)
{
self.di_container
.set_binding::<Interface>(
BindingOptions::new(),
Box::new(
AsyncTransientTypeProvider::<Implementation, AsyncDIContainer>::new(),
),
)
.await;
}
}
#[cfg(test)]
mod tests
{
use super::*;
use crate::dependency_history::MockDependencyHistory;
use crate::di_container::asynchronous::MockAsyncDIContainer;
use crate::test_utils::subjects_async;
#[tokio::test]
async fn in_transient_scope_works()
{
let mut di_container_mock = MockAsyncDIContainer::new();
di_container_mock
.expect_set_binding::<dyn subjects_async::IUserManager>()
.withf(|binding_options, _provider| binding_options.name.is_none())
.return_once(|_name, _provider| ())
.once();
let binding_scope_configurator =
AsyncBindingScopeConfigurator::<
dyn subjects_async::IUserManager,
subjects_async::UserManager,
>::new(&di_container_mock, MockDependencyHistory::new);
binding_scope_configurator.in_transient_scope().await;
}
#[tokio::test]
async fn in_singleton_scope_works()
{
let mut di_container_mock = MockAsyncDIContainer::new();
di_container_mock
.expect_set_binding::<dyn subjects_async::IUserManager>()
.withf(|binding_options, _provider| binding_options.name.is_none())
.return_once(|_name, _provider| ())
.once();
let binding_scope_configurator =
AsyncBindingScopeConfigurator::<
dyn subjects_async::IUserManager,
subjects_async::UserManager,
>::new(&di_container_mock, MockDependencyHistory::new);
assert!(binding_scope_configurator
.in_singleton_scope()
.await
.is_ok());
}
}
|
