Move /src/test to /tests

tests/ui/const-generics/unify_with_nested_expr.rs

@@ -0,0 +1,18 @@
+#![feature(generic_const_exprs)]
+#![allow(incomplete_features)]
+
+fn foo<const N: usize>()
+where
+    [(); N + 1 + 1]:,
+{
+    bar();
+    //~^ ERROR: type annotations
+}
+
+fn bar<const N: usize>()
+where
+    [(); N + 1]:,
+{
+}
+
+fn main() {}