chore: checkpoint before Python removal

vendor/dyn-clone/tests/macros.rs

@@ -0,0 +1,57 @@
+#![allow(clippy::extra_unused_type_parameters)]
+
+use dyn_clone::{clone_trait_object, DynClone};
+
+fn assert_clone<T: Clone>() {}
+
+#[test]
+fn test_plain() {
+    trait Trait: DynClone {}
+
+    clone_trait_object!(Trait);
+
+    assert_clone::<Box<dyn Trait>>();
+    assert_clone::<Box<dyn Trait + Send>>();
+    assert_clone::<Box<dyn Trait + Sync>>();
+    assert_clone::<Box<dyn Trait + Send + Sync>>();
+}
+
+#[test]
+fn test_type_parameter() {
+    trait Trait<T>: DynClone {}
+
+    clone_trait_object!(<T> Trait<T>);
+
+    assert_clone::<Box<dyn Trait<u32>>>();
+}
+
+#[test]
+fn test_generic_bound() {
+    trait Trait<T: PartialEq<T>, U>: DynClone {}
+
+    clone_trait_object!(<T: PartialEq<T>, U> Trait<T, U>);
+
+    assert_clone::<Box<dyn Trait<u32, ()>>>();
+}
+
+#[test]
+fn test_where_clause() {
+    trait Trait<T>: DynClone
+    where
+        T: Clone,
+    {
+    }
+
+    clone_trait_object!(<T> Trait<T> where T: Clone);
+
+    assert_clone::<Box<dyn Trait<u32>>>();
+}
+
+#[test]
+fn test_lifetime() {
+    trait Trait<'a>: DynClone {}
+
+    clone_trait_object!(<'a> Trait<'a>);
+
+    assert_clone::<Box<dyn Trait>>();
+}