refactor!: reorganize DI containers

BREAKING CHANGE: DIContainer, AsyncDIContainer & the binding structs have been relocated

1 files changed, 0 insertions, 1267 deletions

diff --git a/src/di_container.rs b/src/di_container.rs
deleted file mode 100644
index 2ed1e25..0000000
--- a/src/di_container.rs
+++ /dev/null
@@ -1,1267 +0,0 @@
-//! Dependency injection container.
-//!
-//! # Examples
-//! ```
-//! use std::collections::HashMap;
-//! use std::error::Error;
-//!
-//! use syrette::{injectable, DIContainer};
-//!
-//! trait IDatabaseService
-//! {
-//!     fn get_all_records(&self, table_name: String) -> HashMap<String, String>;
-//! }
-//!
-//! struct DatabaseService {}
-//!
-//! #[injectable(IDatabaseService)]
-//! impl DatabaseService
-//! {
-//!     fn new() -> Self
-//!     {
-//!         Self {}
-//!     }
-//! }
-//!
-//! impl IDatabaseService for DatabaseService
-//! {
-//!     fn get_all_records(&self, table_name: String) -> HashMap<String, String>
-//!     {
-//!         // Do stuff here
-//!         HashMap::<String, String>::new()
-//!     }
-//! }
-//!
-//! fn main() -> Result<(), Box<dyn Error>>
-//! {
-//!     let mut di_container = DIContainer::new();
-//!
-//!     di_container
-//!         .bind::<dyn IDatabaseService>()
-//!         .to::<DatabaseService>()
-//!         .map_err(|err| err.to_string())?;
-//!
-//!     let database_service = di_container
-//!         .get::<dyn IDatabaseService>()
-//!         .map_err(|err| err.to_string())?
-//!         .transient()?;
-//!
-//!     Ok(())
-//! }
-//! ```
-use std::any::type_name;
-use std::cell::RefCell;
-use std::marker::PhantomData;
-use std::rc::Rc;
-
-#[cfg(feature = "factory")]
-use crate::castable_factory::blocking::CastableFactory;
-use crate::di_container_binding_map::DIContainerBindingMap;
-use crate::errors::di_container::{
-    BindingBuilderError,
-    BindingScopeConfiguratorError,
-    BindingWhenConfiguratorError,
-    DIContainerError,
-};
-use crate::interfaces::injectable::Injectable;
-use crate::libs::intertrait::cast::{CastBox, CastRc};
-use crate::provider::blocking::{
-    IProvider,
-    Providable,
-    SingletonProvider,
-    TransientTypeProvider,
-};
-use crate::ptr::{SingletonPtr, SomePtr};
-
-/// When configurator for a binding for type 'Interface' inside a [`DIContainer`].
-pub struct BindingWhenConfigurator<Interface>
-where
-    Interface: 'static + ?Sized,
-{
-    di_container: Rc<DIContainer>,
-    interface_phantom: PhantomData<Interface>,
-}
-
-impl<Interface> BindingWhenConfigurator<Interface>
-where
-    Interface: 'static + ?Sized,
-{
-    fn new(di_container: Rc<DIContainer>) -> Self
-    {
-        Self {
-            di_container,
-            interface_phantom: PhantomData,
-        }
-    }
-
-    /// Configures the binding to have a name.
-    ///
-    /// # Errors
-    /// Will return Err if no binding for the interface already exists.
-    pub fn when_named(
-        &self,
-        name: &'static str,
-    ) -> Result<(), BindingWhenConfiguratorError>
-    {
-        let mut bindings_mut = self.di_container.bindings.borrow_mut();
-
-        let binding = bindings_mut.remove::<Interface>(None).map_or_else(
-            || {
-                Err(BindingWhenConfiguratorError::BindingNotFound(type_name::<
-                    Interface,
-                >(
-                )))
-            },
-            Ok,
-        )?;
-
-        bindings_mut.set::<Interface>(Some(name), binding);
-
-        Ok(())
-    }
-}
-
-/// Scope configurator for a binding for type 'Interface' inside a [`DIContainer`].
-pub struct BindingScopeConfigurator<Interface, Implementation>
-where
-    Interface: 'static + ?Sized,
-    Implementation: Injectable,
-{
-    di_container: Rc<DIContainer>,
-    interface_phantom: PhantomData<Interface>,
-    implementation_phantom: PhantomData<Implementation>,
-}
-
-impl<Interface, Implementation> BindingScopeConfigurator<Interface, Implementation>
-where
-    Interface: 'static + ?Sized,
-    Implementation: Injectable,
-{
-    fn new(di_container: Rc<DIContainer>) -> Self
-    {
-        Self {
-            di_container,
-            interface_phantom: PhantomData,
-            implementation_phantom: PhantomData,
-        }
-    }
-
-    /// Configures the binding to be in a transient scope.
-    ///
-    /// This is the default.
-    #[allow(clippy::must_use_candidate)]
-    pub fn in_transient_scope(&self) -> BindingWhenConfigurator<Interface>
-    {
-        let mut bindings_mut = self.di_container.bindings.borrow_mut();
-
-        bindings_mut.set::<Interface>(
-            None,
-            Box::new(TransientTypeProvider::<Implementation>::new()),
-        );
-
-        BindingWhenConfigurator::new(self.di_container.clone())
-    }
-
-    /// Configures the binding to be in a singleton scope.
-    ///
-    /// # Errors
-    /// Will return Err if resolving the implementation fails.
-    pub fn in_singleton_scope(
-        &self,
-    ) -> Result<BindingWhenConfigurator<Interface>, BindingScopeConfiguratorError>
-    {
-        let singleton: SingletonPtr<Implementation> = SingletonPtr::from(
-            Implementation::resolve(&self.di_container, Vec::new())
-                .map_err(BindingScopeConfiguratorError::SingletonResolveFailed)?,
-        );
-
-        let mut bindings_mut = self.di_container.bindings.borrow_mut();
-
-        bindings_mut.set::<Interface>(None, Box::new(SingletonProvider::new(singleton)));
-
-        Ok(BindingWhenConfigurator::new(self.di_container.clone()))
-    }
-}
-
-/// Binding builder for type `Interface` inside a [`DIContainer`].
-pub struct BindingBuilder<Interface>
-where
-    Interface: 'static + ?Sized,
-{
-    di_container: Rc<DIContainer>,
-    interface_phantom: PhantomData<Interface>,
-}
-
-impl<Interface> BindingBuilder<Interface>
-where
-    Interface: 'static + ?Sized,
-{
-    fn new(di_container: Rc<DIContainer>) -> Self
-    {
-        Self {
-            di_container,
-            interface_phantom: PhantomData,
-        }
-    }
-
-    /// Creates a binding of type `Interface` to type `Implementation` inside of the
-    /// associated [`DIContainer`].
-    ///
-    /// The scope of the binding is transient. But that can be changed by using the
-    /// returned [`BindingScopeConfigurator`]
-    ///
-    /// # Errors
-    /// Will return Err if the associated [`DIContainer`] already have a binding for
-    /// the interface.
-    ///
-    /// # Examples
-    /// ```
-    /// # use std::error::Error;
-    /// #
-    /// # use syrette::{DIContainer, injectable};
-    /// #
-    /// # trait Foo {}
-    /// #
-    /// # struct Bar {}
-    /// #
-    /// # #[injectable(Foo)]
-    /// # impl Bar {
-    /// #   fn new() -> Self
-    /// #   {
-    /// #       Self {}
-    /// #   }
-    /// # }
-    /// #
-    /// # impl Foo for Bar {}
-    /// #
-    /// # fn main() -> Result<(), Box<dyn Error>>
-    /// # {
-    /// # let mut di_container = DIContainer::new();
-    /// #
-    /// di_container.bind::<dyn Foo>().to::<Bar>();
-    /// #
-    /// # Ok(())
-    /// # }
-    /// ```
-    pub fn to<Implementation>(
-        &self,
-    ) -> Result<BindingScopeConfigurator<Interface, Implementation>, BindingBuilderError>
-    where
-        Implementation: Injectable,
-    {
-        {
-            let bindings = self.di_container.bindings.borrow();
-
-            if bindings.has::<Interface>(None) {
-                return Err(BindingBuilderError::BindingAlreadyExists(type_name::<
-                    Interface,
-                >(
-                )));
-            }
-        }
-
-        let binding_scope_configurator =
-            BindingScopeConfigurator::new(self.di_container.clone());
-
-        binding_scope_configurator.in_transient_scope();
-
-        Ok(binding_scope_configurator)
-    }
-
-    /// Creates a binding of factory type `Interface` to a factory inside of the
-    /// associated [`DIContainer`].
-    ///
-    /// # Errors
-    /// Will return Err if the associated [`DIContainer`] already have a binding for
-    /// the interface.
-    ///
-    /// # Examples
-    /// ```
-    /// # use std::error::Error;
-    /// #
-    /// # use syrette::{DIContainer, factory};
-    /// # use syrette::ptr::TransientPtr;
-    /// #
-    /// # trait ICustomerID {}
-    /// # trait ICustomer {}
-    /// #
-    /// # struct Customer
-    /// # {
-    /// #   name: String,
-    /// #   id: TransientPtr<dyn ICustomerID>
-    /// # }
-    /// #
-    /// # impl Customer {
-    /// #   fn new(name: String, id: TransientPtr<dyn ICustomerID>) -> Self
-    /// #   {
-    /// #       Self { name, id }
-    /// #   }
-    /// # }
-    /// #
-    /// # impl ICustomer for Customer {}
-    /// #
-    /// # #[factory]
-    /// # type ICustomerFactory = dyn Fn(String, u32) -> dyn ICustomer;
-    /// #
-    /// # #[factory]
-    /// # type ICustomerIDFactory = dyn Fn(u32) -> dyn ICustomerID;
-    /// #
-    /// # fn main() -> Result<(), Box<dyn Error>>
-    /// # {
-    /// # let mut di_container = DIContainer::new();
-    /// #
-    /// di_container
-    ///     .bind::<ICustomerFactory>()
-    ///     .to_factory(&|context| {
-    ///         Box::new(move |name, id| {
-    ///             let customer_id_factory = context
-    ///                 .get::<ICustomerIDFactory>()
-    ///                 .unwrap()
-    ///                 .factory()
-    ///                 .unwrap();
-    ///
-    ///             let customer_id = customer_id_factory(id);
-    ///
-    ///             let customer = TransientPtr::new(Customer::new(name, customer_id));
-    ///
-    ///             customer as TransientPtr<dyn ICustomer>
-    ///         })
-    ///     });
-    /// #
-    /// # Ok(())
-    /// # }
-    /// ```
-    #[cfg(feature = "factory")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "factory")))]
-    pub fn to_factory<Args, Return, Func>(
-        &self,
-        factory_func: &'static Func,
-    ) -> Result<BindingWhenConfigurator<Interface>, BindingBuilderError>
-    where
-        Args: 'static,
-        Return: 'static + ?Sized,
-        Interface: Fn<Args, Output = crate::ptr::TransientPtr<Return>>,
-        Func: Fn<(std::rc::Rc<DIContainer>,), Output = Box<Interface>>,
-    {
-        {
-            let bindings = self.di_container.bindings.borrow();
-
-            if bindings.has::<Interface>(None) {
-                return Err(BindingBuilderError::BindingAlreadyExists(type_name::<
-                    Interface,
-                >(
-                )));
-            }
-        }
-
-        let mut bindings_mut = self.di_container.bindings.borrow_mut();
-
-        let factory_impl = CastableFactory::new(factory_func);
-
-        bindings_mut.set::<Interface>(
-            None,
-            Box::new(crate::provider::blocking::FactoryProvider::new(
-                crate::ptr::FactoryPtr::new(factory_impl),
-                false,
-            )),
-        );
-
-        Ok(BindingWhenConfigurator::new(self.di_container.clone()))
-    }
-
-    /// Creates a binding of type `Interface` to a factory that takes no arguments
-    /// inside of the associated [`DIContainer`].
-    ///
-    /// # Errors
-    /// Will return Err if the associated [`DIContainer`] already have a binding for
-    /// the interface.
-    ///
-    /// # Examples
-    /// ```
-    /// # use std::error::Error;
-    /// #
-    /// # use syrette::{DIContainer, factory};
-    /// # use syrette::ptr::TransientPtr;
-    /// #
-    /// # trait IBuffer {}
-    /// #
-    /// # struct Buffer<const SIZE: usize>
-    /// # {
-    /// #   buf: [u8; SIZE]
-    /// # }
-    /// #
-    /// # impl<const SIZE: usize> Buffer<SIZE>
-    /// # {
-    /// #   fn new() -> Self
-    /// #   {
-    /// #       Self {
-    /// #           buf: [0; SIZE]
-    /// #       }
-    /// #   }
-    /// # }
-    /// #
-    /// # impl<const SIZE: usize> IBuffer for Buffer<SIZE> {}
-    /// #
-    /// # const BUFFER_SIZE: usize = 12;
-    /// #
-    /// # fn main() -> Result<(), Box<dyn Error>>
-    /// # {
-    /// # let mut di_container = DIContainer::new();
-    /// #
-    /// di_container.bind::<dyn IBuffer>().to_default_factory(&|_| {
-    ///     Box::new(|| {
-    ///         let buffer = TransientPtr::new(Buffer::<BUFFER_SIZE>::new());
-    ///
-    ///         buffer as TransientPtr<dyn IBuffer>
-    ///     })
-    /// });
-    /// #
-    /// # Ok(())
-    /// # }
-    /// ```
-    #[cfg(feature = "factory")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "factory")))]
-    pub fn to_default_factory<Return, FactoryFunc>(
-        &self,
-        factory_func: &'static FactoryFunc,
-    ) -> Result<BindingWhenConfigurator<Interface>, BindingBuilderError>
-    where
-        Return: 'static + ?Sized,
-        FactoryFunc: Fn<
-            (Rc<DIContainer>,),
-            Output = crate::ptr::TransientPtr<
-                dyn Fn<(), Output = crate::ptr::TransientPtr<Return>>,
-            >,
-        >,
-    {
-        {
-            let bindings = self.di_container.bindings.borrow();
-
-            if bindings.has::<Interface>(None) {
-                return Err(BindingBuilderError::BindingAlreadyExists(type_name::<
-                    Interface,
-                >(
-                )));
-            }
-        }
-
-        let mut bindings_mut = self.di_container.bindings.borrow_mut();
-
-        let factory_impl = CastableFactory::new(factory_func);
-
-        bindings_mut.set::<Interface>(
-            None,
-            Box::new(crate::provider::blocking::FactoryProvider::new(
-                crate::ptr::FactoryPtr::new(factory_impl),
-                true,
-            )),
-        );
-
-        Ok(BindingWhenConfigurator::new(self.di_container.clone()))
-    }
-}
-
-/// Dependency injection container.
-pub struct DIContainer
-{
-    bindings: RefCell<DIContainerBindingMap<dyn IProvider>>,
-}
-
-impl DIContainer
-{
-    /// Returns a new `DIContainer`.
-    #[must_use]
-    pub fn new() -> Rc<Self>
-    {
-        Rc::new(Self {
-            bindings: RefCell::new(DIContainerBindingMap::new()),
-        })
-    }
-
-    /// Returns a new [`BindingBuilder`] for the given interface.
-    #[must_use]
-    pub fn bind<Interface>(self: &mut Rc<Self>) -> BindingBuilder<Interface>
-    where
-        Interface: 'static + ?Sized,
-    {
-        BindingBuilder::<Interface>::new(self.clone())
-    }
-
-    /// Returns the type bound with `Interface`.
-    ///
-    /// # Errors
-    /// Will return `Err` if:
-    /// - No binding for `Interface` exists
-    /// - Resolving the binding for `Interface` fails
-    /// - Casting the binding for `Interface` fails
-    pub fn get<Interface>(self: &Rc<Self>) -> Result<SomePtr<Interface>, DIContainerError>
-    where
-        Interface: 'static + ?Sized,
-    {
-        self.get_bound::<Interface>(Vec::new(), None)
-    }
-
-    /// Returns the type bound with `Interface` and the specified name.
-    ///
-    /// # Errors
-    /// Will return `Err` if:
-    /// - No binding for `Interface` with name `name` exists
-    /// - Resolving the binding for `Interface` fails
-    /// - Casting the binding for `Interface` fails
-    pub fn get_named<Interface>(
-        self: &Rc<Self>,
-        name: &'static str,
-    ) -> Result<SomePtr<Interface>, DIContainerError>
-    where
-        Interface: 'static + ?Sized,
-    {
-        self.get_bound::<Interface>(Vec::new(), Some(name))
-    }
-
-    #[doc(hidden)]
-    pub fn get_bound<Interface>(
-        self: &Rc<Self>,
-        dependency_history: Vec<&'static str>,
-        name: Option<&'static str>,
-    ) -> Result<SomePtr<Interface>, DIContainerError>
-    where
-        Interface: 'static + ?Sized,
-    {
-        let binding_providable =
-            self.get_binding_providable::<Interface>(name, dependency_history)?;
-
-        self.handle_binding_providable(binding_providable)
-    }
-
-    fn handle_binding_providable<Interface>(
-        self: &Rc<Self>,
-        binding_providable: Providable,
-    ) -> Result<SomePtr<Interface>, DIContainerError>
-    where
-        Interface: 'static + ?Sized,
-    {
-        match binding_providable {
-            Providable::Transient(transient_binding) => Ok(SomePtr::Transient(
-                transient_binding.cast::<Interface>().map_err(|_| {
-                    DIContainerError::CastFailed {
-                        interface: type_name::<Interface>(),
-                        binding_kind: "transient",
-                    }
-                })?,
-            )),
-            Providable::Singleton(singleton_binding) => Ok(SomePtr::Singleton(
-                singleton_binding.cast::<Interface>().map_err(|_| {
-                    DIContainerError::CastFailed {
-                        interface: type_name::<Interface>(),
-                        binding_kind: "singleton",
-                    }
-                })?,
-            )),
-            #[cfg(feature = "factory")]
-            Providable::Factory(factory_binding) => {
-                use crate::interfaces::factory::IFactory;
-
-                let factory = factory_binding
-                    .cast::<dyn IFactory<(Rc<DIContainer>,), Interface>>()
-                    .map_err(|_| DIContainerError::CastFailed {
-                        interface: type_name::<Interface>(),
-                        binding_kind: "factory",
-                    })?;
-
-                Ok(SomePtr::Factory(factory(self.clone()).into()))
-            }
-            #[cfg(feature = "factory")]
-            Providable::DefaultFactory(factory_binding) => {
-                use crate::interfaces::factory::IFactory;
-                use crate::ptr::TransientPtr;
-
-                let default_factory = factory_binding
-                    .cast::<dyn IFactory<
-                        (Rc<DIContainer>,),
-                        dyn Fn<(), Output = TransientPtr<Interface>>,
-                    >>()
-                    .map_err(|_| DIContainerError::CastFailed {
-                        interface: type_name::<Interface>(),
-                        binding_kind: "default factory",
-                    })?;
-
-                Ok(SomePtr::Transient(default_factory(self.clone())()))
-            }
-        }
-    }
-
-    fn get_binding_providable<Interface>(
-        self: &Rc<Self>,
-        name: Option<&'static str>,
-        dependency_history: Vec<&'static str>,
-    ) -> Result<Providable, DIContainerError>
-    where
-        Interface: 'static + ?Sized,
-    {
-        self.bindings
-            .borrow()
-            .get::<Interface>(name)
-            .map_or_else(
-                || {
-                    Err(DIContainerError::BindingNotFound {
-                        interface: type_name::<Interface>(),
-                        name,
-                    })
-                },
-                Ok,
-            )?
-            .provide(self, dependency_history)
-            .map_err(|err| DIContainerError::BindingResolveFailed {
-                reason: err,
-                interface: type_name::<Interface>(),
-            })
-    }
-}
-
-#[cfg(test)]
-mod tests
-{
-    use std::error::Error;
-
-    use mockall::mock;
-
-    use super::*;
-    use crate::errors::injectable::InjectableError;
-    use crate::provider::blocking::IProvider;
-    use crate::ptr::TransientPtr;
-
-    mod subjects
-    {
-        //! Test subjects.
-
-        use std::fmt::Debug;
-        use std::rc::Rc;
-
-        use syrette_macros::declare_interface;
-
-        use super::DIContainer;
-        use crate::interfaces::injectable::Injectable;
-        use crate::ptr::TransientPtr;
-
-        pub trait IUserManager
-        {
-            fn add_user(&self, user_id: i128);
-
-            fn remove_user(&self, user_id: i128);
-        }
-
-        pub struct UserManager {}
-
-        impl UserManager
-        {
-            pub fn new() -> Self
-            {
-                Self {}
-            }
-        }
-
-        impl IUserManager for UserManager
-        {
-            fn add_user(&self, _user_id: i128)
-            {
-                // ...
-            }
-
-            fn remove_user(&self, _user_id: i128)
-            {
-                // ...
-            }
-        }
-
-        use crate as syrette;
-
-        declare_interface!(UserManager -> IUserManager);
-
-        impl Injectable for UserManager
-        {
-            fn resolve(
-                _di_container: &Rc<DIContainer>,
-                _dependency_history: Vec<&'static str>,
-            ) -> Result<TransientPtr<Self>, crate::errors::injectable::InjectableError>
-            where
-                Self: Sized,
-            {
-                Ok(TransientPtr::new(Self::new()))
-            }
-        }
-
-        pub trait INumber
-        {
-            fn get(&self) -> i32;
-
-            fn set(&mut self, number: i32);
-        }
-
-        impl PartialEq for dyn INumber
-        {
-            fn eq(&self, other: &Self) -> bool
-            {
-                self.get() == other.get()
-            }
-        }
-
-        impl Debug for dyn INumber
-        {
-            fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result
-            {
-                f.write_str(format!("{}", self.get()).as_str())
-            }
-        }
-
-        pub struct Number
-        {
-            pub num: i32,
-        }
-
-        impl Number
-        {
-            pub fn new() -> Self
-            {
-                Self { num: 0 }
-            }
-        }
-
-        impl INumber for Number
-        {
-            fn get(&self) -> i32
-            {
-                self.num
-            }
-
-            fn set(&mut self, number: i32)
-            {
-                self.num = number;
-            }
-        }
-
-        declare_interface!(Number -> INumber);
-
-        impl Injectable for Number
-        {
-            fn resolve(
-                _di_container: &Rc<DIContainer>,
-                _dependency_history: Vec<&'static str>,
-            ) -> Result<TransientPtr<Self>, crate::errors::injectable::InjectableError>
-            where
-                Self: Sized,
-            {
-                Ok(TransientPtr::new(Self::new()))
-            }
-        }
-    }
-
-    #[test]
-    fn can_bind_to() -> Result<(), Box<dyn Error>>
-    {
-        let mut di_container = DIContainer::new();
-
-        assert_eq!(di_container.bindings.borrow().count(), 0);
-
-        di_container
-            .bind::<dyn subjects::IUserManager>()
-            .to::<subjects::UserManager>()?;
-
-        assert_eq!(di_container.bindings.borrow().count(), 1);
-
-        Ok(())
-    }
-
-    #[test]
-    fn can_bind_to_transient() -> Result<(), Box<dyn Error>>
-    {
-        let mut di_container = DIContainer::new();
-
-        assert_eq!(di_container.bindings.borrow().count(), 0);
-
-        di_container
-            .bind::<dyn subjects::IUserManager>()
-            .to::<subjects::UserManager>()?
-            .in_transient_scope();
-
-        assert_eq!(di_container.bindings.borrow().count(), 1);
-
-        Ok(())
-    }
-
-    #[test]
-    fn can_bind_to_transient_when_named() -> Result<(), Box<dyn Error>>
-    {
-        let mut di_container = DIContainer::new();
-
-        assert_eq!(di_container.bindings.borrow().count(), 0);
-
-        di_container
-            .bind::<dyn subjects::IUserManager>()
-            .to::<subjects::UserManager>()?
-            .in_transient_scope()
-            .when_named("regular")?;
-
-        assert_eq!(di_container.bindings.borrow().count(), 1);
-
-        Ok(())
-    }
-
-    #[test]
-    fn can_bind_to_singleton() -> Result<(), Box<dyn Error>>
-    {
-        let mut di_container = DIContainer::new();
-
-        assert_eq!(di_container.bindings.borrow().count(), 0);
-
-        di_container
-            .bind::<dyn subjects::IUserManager>()
-            .to::<subjects::UserManager>()?
-            .in_singleton_scope()?;
-
-        assert_eq!(di_container.bindings.borrow().count(), 1);
-
-        Ok(())
-    }
-
-    #[test]
-    fn can_bind_to_singleton_when_named() -> Result<(), Box<dyn Error>>
-    {
-        let mut di_container = DIContainer::new();
-
-        assert_eq!(di_container.bindings.borrow().count(), 0);
-
-        di_container
-            .bind::<dyn subjects::IUserManager>()
-            .to::<subjects::UserManager>()?
-            .in_singleton_scope()?
-            .when_named("cool")?;
-
-        assert_eq!(di_container.bindings.borrow().count(), 1);
-
-        Ok(())
-    }
-
-    #[test]
-    #[cfg(feature = "factory")]
-    fn can_bind_to_factory() -> Result<(), Box<dyn Error>>
-    {
-        use crate as syrette;
-        use crate::factory;
-
-        #[factory]
-        type IUserManagerFactory = dyn Fn() -> dyn subjects::IUserManager;
-
-        let mut di_container = DIContainer::new();
-
-        assert_eq!(di_container.bindings.borrow().count(), 0);
-
-        di_container
-            .bind::<IUserManagerFactory>()
-            .to_factory(&|_| {
-                Box::new(move || {
-                    let user_manager: TransientPtr<dyn subjects::IUserManager> =
-                        TransientPtr::new(subjects::UserManager::new());
-
-                    user_manager
-                })
-            })?;
-
-        assert_eq!(di_container.bindings.borrow().count(), 1);
-
-        Ok(())
-    }
-
-    #[test]
-    #[cfg(feature = "factory")]
-    fn can_bind_to_factory_when_named() -> Result<(), Box<dyn Error>>
-    {
-        use crate as syrette;
-        use crate::factory;
-
-        #[factory]
-        type IUserManagerFactory = dyn Fn() -> dyn subjects::IUserManager;
-
-        let mut di_container = DIContainer::new();
-
-        assert_eq!(di_container.bindings.borrow().count(), 0);
-
-        di_container
-            .bind::<IUserManagerFactory>()
-            .to_factory(&|_| {
-                Box::new(move || {
-                    let user_manager: TransientPtr<dyn subjects::IUserManager> =
-                        TransientPtr::new(subjects::UserManager::new());
-
-                    user_manager
-                })
-            })?
-            .when_named("awesome")?;
-
-        assert_eq!(di_container.bindings.borrow().count(), 1);
-
-        Ok(())
-    }
-
-    #[test]
-    fn can_get() -> Result<(), Box<dyn Error>>
-    {
-        mock! {
-            Provider {}
-
-            impl IProvider for Provider
-            {
-                fn provide(
-                    &self,
-                    di_container: &Rc<DIContainer>,
-                    dependency_history: Vec<&'static str>,
-                ) -> Result<Providable, InjectableError>;
-            }
-        }
-
-        let di_container = DIContainer::new();
-
-        let mut mock_provider = MockProvider::new();
-
-        mock_provider.expect_provide().returning(|_, _| {
-            Ok(Providable::Transient(TransientPtr::new(
-                subjects::UserManager::new(),
-            )))
-        });
-
-        di_container
-            .bindings
-            .borrow_mut()
-            .set::<dyn subjects::IUserManager>(None, Box::new(mock_provider));
-
-        di_container
-            .get::<dyn subjects::IUserManager>()?
-            .transient()?;
-
-        Ok(())
-    }
-
-    #[test]
-    fn can_get_named() -> Result<(), Box<dyn Error>>
-    {
-        mock! {
-            Provider {}
-
-            impl IProvider for Provider
-            {
-                fn provide(
-                    &self,
-                    di_container: &Rc<DIContainer>,
-                    dependency_history: Vec<&'static str>,
-                ) -> Result<Providable, InjectableError>;
-            }
-        }
-
-        let di_container = DIContainer::new();
-
-        let mut mock_provider = MockProvider::new();
-
-        mock_provider.expect_provide().returning(|_, _| {
-            Ok(Providable::Transient(TransientPtr::new(
-                subjects::UserManager::new(),
-            )))
-        });
-
-        di_container
-            .bindings
-            .borrow_mut()
-            .set::<dyn subjects::IUserManager>(Some("special"), Box::new(mock_provider));
-
-        di_container
-            .get_named::<dyn subjects::IUserManager>("special")?
-            .transient()?;
-
-        Ok(())
-    }
-
-    #[test]
-    fn can_get_singleton() -> Result<(), Box<dyn Error>>
-    {
-        mock! {
-            Provider {}
-
-            impl IProvider for Provider
-            {
-                fn provide(
-                    &self,
-                    di_container: &Rc<DIContainer>,
-                    dependency_history: Vec<&'static str>,
-                ) -> Result<Providable, InjectableError>;
-            }
-        }
-
-        let di_container = DIContainer::new();
-
-        let mut mock_provider = MockProvider::new();
-
-        let mut singleton = SingletonPtr::new(subjects::Number::new());
-
-        SingletonPtr::get_mut(&mut singleton).unwrap().num = 2820;
-
-        mock_provider
-            .expect_provide()
-            .returning_st(move |_, _| Ok(Providable::Singleton(singleton.clone())));
-
-        di_container
-            .bindings
-            .borrow_mut()
-            .set::<dyn subjects::INumber>(None, Box::new(mock_provider));
-
-        let first_number_rc = di_container.get::<dyn subjects::INumber>()?.singleton()?;
-
-        assert_eq!(first_number_rc.get(), 2820);
-
-        let second_number_rc =
-            di_container.get::<dyn subjects::INumber>()?.singleton()?;
-
-        assert_eq!(first_number_rc.as_ref(), second_number_rc.as_ref());
-
-        Ok(())
-    }
-
-    #[test]
-    fn can_get_singleton_named() -> Result<(), Box<dyn Error>>
-    {
-        mock! {
-            Provider {}
-
-            impl IProvider for Provider
-            {
-                fn provide(
-                    &self,
-                    di_container: &Rc<DIContainer>,
-                    dependency_history: Vec<&'static str>,
-                ) -> Result<Providable, InjectableError>;
-            }
-        }
-
-        let di_container = DIContainer::new();
-
-        let mut mock_provider = MockProvider::new();
-
-        let mut singleton = SingletonPtr::new(subjects::Number::new());
-
-        SingletonPtr::get_mut(&mut singleton).unwrap().num = 2820;
-
-        mock_provider
-            .expect_provide()
-            .returning_st(move |_, _| Ok(Providable::Singleton(singleton.clone())));
-
-        di_container
-            .bindings
-            .borrow_mut()
-            .set::<dyn subjects::INumber>(Some("cool"), Box::new(mock_provider));
-
-        let first_number_rc = di_container
-            .get_named::<dyn subjects::INumber>("cool")?
-            .singleton()?;
-
-        assert_eq!(first_number_rc.get(), 2820);
-
-        let second_number_rc = di_container
-            .get_named::<dyn subjects::INumber>("cool")?
-            .singleton()?;
-
-        assert_eq!(first_number_rc.as_ref(), second_number_rc.as_ref());
-
-        Ok(())
-    }
-
-    #[test]
-    #[cfg(feature = "factory")]
-    fn can_get_factory() -> Result<(), Box<dyn Error>>
-    {
-        use crate::ptr::FactoryPtr;
-
-        trait IUserManager
-        {
-            fn add_user(&mut self, user_id: i128);
-
-            fn remove_user(&mut self, user_id: i128);
-        }
-
-        struct UserManager
-        {
-            users: Vec<i128>,
-        }
-
-        impl UserManager
-        {
-            fn new(users: Vec<i128>) -> Self
-            {
-                Self { users }
-            }
-        }
-
-        impl IUserManager for UserManager
-        {
-            fn add_user(&mut self, user_id: i128)
-            {
-                self.users.push(user_id);
-            }
-
-            fn remove_user(&mut self, user_id: i128)
-            {
-                let user_index =
-                    self.users.iter().position(|user| *user == user_id).unwrap();
-
-                self.users.remove(user_index);
-            }
-        }
-
-        type FactoryFunc = dyn Fn<
-            (std::rc::Rc<DIContainer>,),
-            Output = Box<
-                dyn Fn<(Vec<i128>,), Output = crate::ptr::TransientPtr<dyn IUserManager>>,
-            >,
-        >;
-
-        use crate as syrette;
-
-        #[crate::factory]
-        type IUserManagerFactory = dyn Fn(Vec<i128>) -> dyn IUserManager;
-
-        mock! {
-            Provider {}
-
-            impl IProvider for Provider
-            {
-                fn provide(
-                    &self,
-                    di_container: &Rc<DIContainer>,
-                    dependency_history: Vec<&'static str>,
-                ) -> Result<Providable, InjectableError>;
-            }
-        }
-
-        let di_container = DIContainer::new();
-
-        let factory_func: &'static FactoryFunc = &|_: Rc<DIContainer>| {
-            Box::new(move |users| {
-                let user_manager: TransientPtr<dyn IUserManager> =
-                    TransientPtr::new(UserManager::new(users));
-
-                user_manager
-            })
-        };
-
-        let mut mock_provider = MockProvider::new();
-
-        mock_provider.expect_provide().returning_st(|_, _| {
-            Ok(Providable::Factory(FactoryPtr::new(CastableFactory::new(
-                factory_func,
-            ))))
-        });
-
-        di_container
-            .bindings
-            .borrow_mut()
-            .set::<IUserManagerFactory>(None, Box::new(mock_provider));
-
-        di_container.get::<IUserManagerFactory>()?.factory()?;
-
-        Ok(())
-    }
-
-    #[test]
-    #[cfg(feature = "factory")]
-    fn can_get_factory_named() -> Result<(), Box<dyn Error>>
-    {
-        use crate::ptr::FactoryPtr;
-
-        trait IUserManager
-        {
-            fn add_user(&mut self, user_id: i128);
-
-            fn remove_user(&mut self, user_id: i128);
-        }
-
-        struct UserManager
-        {
-            users: Vec<i128>,
-        }
-
-        impl UserManager
-        {
-            fn new(users: Vec<i128>) -> Self
-            {
-                Self { users }
-            }
-        }
-
-        impl IUserManager for UserManager
-        {
-            fn add_user(&mut self, user_id: i128)
-            {
-                self.users.push(user_id);
-            }
-
-            fn remove_user(&mut self, user_id: i128)
-            {
-                let user_index =
-                    self.users.iter().position(|user| *user == user_id).unwrap();
-
-                self.users.remove(user_index);
-            }
-        }
-
-        type FactoryFunc = dyn Fn<
-            (std::rc::Rc<DIContainer>,),
-            Output = Box<
-                dyn Fn<(Vec<i128>,), Output = crate::ptr::TransientPtr<dyn IUserManager>>,
-            >,
-        >;
-
-        use crate as syrette;
-
-        #[crate::factory]
-        type IUserManagerFactory = dyn Fn(Vec<i128>) -> dyn IUserManager;
-
-        mock! {
-            Provider {}
-
-            impl IProvider for Provider
-            {
-                fn provide(
-                    &self,
-                    di_container: &Rc<DIContainer>,
-                    dependency_history: Vec<&'static str>,
-                ) -> Result<Providable, InjectableError>;
-            }
-        }
-
-        let di_container = DIContainer::new();
-
-        let factory_func: &'static FactoryFunc = &|_: Rc<DIContainer>| {
-            Box::new(move |users| {
-                let user_manager: TransientPtr<dyn IUserManager> =
-                    TransientPtr::new(UserManager::new(users));
-
-                user_manager
-            })
-        };
-
-        let mut mock_provider = MockProvider::new();
-
-        mock_provider.expect_provide().returning_st(|_, _| {
-            Ok(Providable::Factory(FactoryPtr::new(CastableFactory::new(
-                factory_func,
-            ))))
-        });
-
-        di_container
-            .bindings
-            .borrow_mut()
-            .set::<IUserManagerFactory>(Some("special"), Box::new(mock_provider));
-
-        di_container
-            .get_named::<IUserManagerFactory>("special")?
-            .factory()?;
-
-        Ok(())
-    }
-}