[illicit] Guard returned from lookups impls Debug.

Cargo.toml

@@ -18,7 +18,7 @@ edition = "2018"
 [dependencies]
 dyn-cache = { path = "dyn-cache", version = "0.11.0"}
 futures = "0.3.5"
-illicit = { path = "illicit", version = "1.1.0"}
+illicit = { path = "illicit", version = "1.1.1"}
 parking_lot = "0.11"
 scopeguard = "1"
 topo = { path = "topo", version = "0.13.0"}

dom/Cargo.toml

@@ -28,7 +28,7 @@ webdom = ["augdom/webdom", "raf", "wasm-bindgen-futures"]
 [dependencies]
 augdom = { path = "augdom", version = "0.2.0-pre"}
 futures = "0.3.5"
-illicit = { path = "../illicit", version = "1.1.0"}
+illicit = { path = "../illicit", version = "1.1.1"}
 moxie = { path = "../", version = "0.3.0-pre"}
 paste = "1.0.0"
 scopeguard = "1"

dyn-cache/Cargo.toml

@@ -17,7 +17,7 @@ edition = "2018"
 downcast-rs = "1.1.1"
 hash_hasher = "2.0.3"
 hashbrown = "0.8.0"
-illicit = { path = "../illicit", version = "1.1.0"}
+illicit = { path = "../illicit", version = "1.1.1"}
 parking_lot = "0.11.0"
 paste = "1.0.0"
 

illicit/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "illicit"
-version = "1.1.0"
+version = "1.1.1"
 description = "An implicit thread-local environment which is indexed by type."
 categories = ["rust-patterns"]
 keywords = ["context", "environment", "global", "singleton"]

illicit/src/anon_rc.rs

@@ -32,7 +32,9 @@ impl AnonRc {
         }
     }
 
-    pub(crate) fn downcast_deref<T: 'static>(self) -> Option<impl Deref<Target = T> + 'static> {
+    pub(crate) fn downcast_deref<T: Debug + 'static>(
+        self,
+    ) -> Option<impl Deref<Target = T> + Debug + 'static> {
         OwningRef::new(self.inner)
             .try_map(|anon| {
                 let res: Result<&T, &str> = anon.downcast_ref().ok_or("invalid cast");

illicit/src/lib.rs

@@ -241,9 +241,9 @@ thread_local! {
 /// ```
 /// assert!(illicit::get::<String>().is_err());
 /// ```
-pub fn get<E>() -> Result<impl Deref<Target = E> + 'static, GetFailed>
+pub fn get<E>() -> Result<impl Deref<Target = E> + Debug + 'static, GetFailed>
 where
-    E: Any + 'static,
+    E: Any + Debug + 'static,
 {
     let key = TypeId::of::<E>();
     let anon = CURRENT_SCOPE.with(|current| {
@@ -279,7 +279,7 @@ where
 #[track_caller]
 pub fn expect<E>() -> impl Deref<Target = E> + 'static
 where
-    E: Any + 'static,
+    E: Any + Debug + 'static,
 {
     get().unwrap()
 }
@@ -351,7 +351,16 @@ pub struct Layer {
 impl Default for Layer {
     #[track_caller]
     fn default() -> Self {
-        Self::new()
+        let mut values = Vec::new();
+        let mut depth = 0;
+
+        CURRENT_SCOPE.with(|current| {
+            let current = current.borrow();
+            depth = current.depth + 1;
+            values = current.values.clone();
+        });
+
+        Self { values, depth }
     }
 }
 
@@ -368,16 +377,7 @@ impl Layer {
     /// values.
     #[track_caller]
     pub fn new() -> Self {
-        let mut values = Vec::new();
-        let mut depth = 0;
-
-        CURRENT_SCOPE.with(|current| {
-            let current = current.borrow();
-            depth = current.depth + 1;
-            values = current.values.clone();
-        });
-
-        Self { values, depth }
+        Self::default()
     }
 
     /// Adds the new item and returns the modified layer.
@@ -589,11 +589,8 @@ mod tests {
 
     #[test]
     fn failure_error() {
-        if let Err(e) = get::<u8>() {
-            assert_display_snapshot!(e);
-        } else {
-            panic!("got a u8 from the environment when we shouldn't have");
-        }
+        let e = get::<u8>().unwrap_err();
+        assert_display_snapshot!(e);
     }
 
     #[test]

topo/Cargo.toml

@@ -15,7 +15,7 @@ edition = "2018"
 
 [dependencies]
 dyn-cache = { path = "../dyn-cache", version = "0.11.0"}
-illicit = { path = "../illicit", version = "1.1.0"}
+illicit = { path = "../illicit", version = "1.1.1"}
 once_cell = "1.4.0"
 parking_lot = "0.11.0"
 topo-macro = { path = "macro", version = "0.10.0"}