add tests

src/test/ui/const-generics/expose-default-substs-param-env.rs

@@ -0,0 +1,9 @@
+// build-pass
+
+#![feature(generic_const_exprs)]
+#![allow(unused_braces, incomplete_features)]
+
+pub trait Foo<const N: usize> {}
+pub trait Bar: Foo<{ 1 }> { }
+
+fn main() {}

src/test/ui/const-generics/issues/issue-89334.rs

@@ -0,0 +1,16 @@
+// build-pass
+
+#![feature(generic_const_exprs)]
+#![allow(unused_braces, incomplete_features)]
+
+pub trait AnotherTrait{
+    const ARRAY_SIZE: usize;
+}
+pub trait Shard<T: AnotherTrait>:
+    AsMut<[[u8; T::ARRAY_SIZE]]>
+where
+    [(); T::ARRAY_SIZE]: Sized
+{
+}
+
+fn main() {}