Struct DependencyOverrides 

pub struct DependencyOverrides { /* private fields */ }

Dependency override registry (primarily for testing).

Implementations

impl DependencyOverrides

pub fn new() -> Self

Create an empty overrides registry.

pub fn insert<T, F, Fut>(&self, f: F)

where T: FromDependency, F: Fn(&RequestContext, &mut Request) -> Fut + Send + Sync + 'static, Fut: Future<Output = Result<T, T::Error>> + Send + 'static,

Register an override resolver for a dependency type.

pub fn insert_value<T>(&self, value: T)

where T: FromDependency,

Register a fixed override value for a dependency type.

pub fn clear(&self)

Clear all overrides.

pub async fn resolve<T>( &self, ctx: &RequestContext, req: &mut Request, ) -> Option<Result<T, T::Error>>

where T: FromDependency,

Resolve an override if one exists for T.

Type Safety

The override is looked up by TypeId::of::<T>(), which should guarantee that the stored closure returns the correct types. If a type mismatch occurs despite the TypeId matching:

• In debug builds: panics via debug_assert! to catch bugs early
• In release builds: returns None to fall back to normal resolution

pub fn len(&self) -> usize

Return the number of overrides registered.

pub fn is_empty(&self) -> bool

Returns true if no overrides are registered.

Trait Implementations

impl Debug for DependencyOverrides

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DependencyOverrides

fn default() -> Self

Returns the “default value” for a type.