diff options
Diffstat (limited to 'vendor/tracing-subscriber/tests/layer_filters/downcast_raw.rs')
-rw-r--r-- | vendor/tracing-subscriber/tests/layer_filters/downcast_raw.rs | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/vendor/tracing-subscriber/tests/layer_filters/downcast_raw.rs b/vendor/tracing-subscriber/tests/layer_filters/downcast_raw.rs deleted file mode 100644 index b5f7e35ce..000000000 --- a/vendor/tracing-subscriber/tests/layer_filters/downcast_raw.rs +++ /dev/null @@ -1,68 +0,0 @@ -use tracing::Subscriber; -use tracing_subscriber::filter::Targets; -use tracing_subscriber::prelude::*; -use tracing_subscriber::Layer; - -#[test] -fn downcast_ref_to_inner_layer_and_filter() { - // Test that a filtered layer gives downcast_ref access to - // both the layer and the filter. - - struct WrappedLayer; - - impl<S> Layer<S> for WrappedLayer - where - S: Subscriber, - S: for<'lookup> tracing_subscriber::registry::LookupSpan<'lookup>, - { - } - - let layer = WrappedLayer; - let filter = Targets::new().with_default(tracing::Level::INFO); - let registry = tracing_subscriber::registry().with(layer.with_filter(filter)); - let dispatch = tracing::dispatcher::Dispatch::new(registry); - - // The filter is available - assert!(dispatch.downcast_ref::<Targets>().is_some()); - // The wrapped layer is available - assert!(dispatch.downcast_ref::<WrappedLayer>().is_some()); -} - -#[test] -fn forward_downcast_raw_to_layer() { - // Test that a filtered layer still gives its wrapped layer a chance to - // return a custom struct from downcast_raw. - // https://github.com/tokio-rs/tracing/issues/1618 - - struct WrappedLayer { - with_context: WithContext, - } - - struct WithContext; - - impl<S> Layer<S> for WrappedLayer - where - S: Subscriber, - S: for<'lookup> tracing_subscriber::registry::LookupSpan<'lookup>, - { - unsafe fn downcast_raw(&self, id: std::any::TypeId) -> Option<*const ()> { - match id { - id if id == std::any::TypeId::of::<Self>() => Some(self as *const _ as *const ()), - id if id == std::any::TypeId::of::<WithContext>() => { - Some(&self.with_context as *const _ as *const ()) - } - _ => None, - } - } - } - - let layer = WrappedLayer { - with_context: WithContext, - }; - let filter = Targets::new().with_default(tracing::Level::INFO); - let registry = tracing_subscriber::registry().with(layer.with_filter(filter)); - let dispatch = tracing::dispatcher::Dispatch::new(registry); - - // Types from a custom implementation of `downcast_raw` are available - assert!(dispatch.downcast_ref::<WithContext>().is_some()); -} |