Add tests

src/test/ui-fulldeps/internal-lints/pass_ty_by_ref.rs

+// compile-flags: -Z unstable-options
+
+#![feature(rustc_private)]
+#![deny(ty_pass_by_reference)]
+#![allow(unused)]
+
+extern crate rustc;
+
+use rustc::ty::{Ty, TyCtxt};
+
+fn ty_by_ref(
+    ty_val: Ty<'_>,
+    ty_ref: &Ty<'_>, //~ ERROR passing `Ty<'_>` by reference
+    ty_ctxt_val: TyCtxt<'_, '_, '_>,
+    ty_ctxt_ref: &TyCtxt<'_, '_, '_>, //~ ERROR passing `TyCtxt<'_, '_, '_>` by reference
+) {
+}
+
+fn ty_multi_ref(ty_multi: &&Ty<'_>, ty_ctxt_multi: &&&&TyCtxt<'_, '_, '_>) {}
+//~^ ERROR passing `Ty<'_>` by reference
+//~^^ ERROR passing `TyCtxt<'_, '_, '_>` by reference
+
+trait T {
+    fn ty_by_ref_in_trait(
+        ty_val: Ty<'_>,
+        ty_ref: &Ty<'_>, //~ ERROR passing `Ty<'_>` by reference
+        ty_ctxt_val: TyCtxt<'_, '_, '_>,
+        ty_ctxt_ref: &TyCtxt<'_, '_, '_>, //~ ERROR passing `TyCtxt<'_, '_, '_>` by reference
+    );
+
+    fn ty_multi_ref_in_trait(ty_multi: &&Ty<'_>, ty_ctxt_multi: &&&&TyCtxt<'_, '_, '_>);
+    //~^ ERROR passing `Ty<'_>` by reference
+    //~^^ ERROR passing `TyCtxt<'_, '_, '_>` by reference
+}
+
+struct Foo;
+
+impl T for Foo {
+    fn ty_by_ref_in_trait(
+        ty_val: Ty<'_>,
+        ty_ref: &Ty<'_>,
+        ty_ctxt_val: TyCtxt<'_, '_, '_>,
+        ty_ctxt_ref: &TyCtxt<'_, '_, '_>,
+    ) {
+    }
+
+    fn ty_multi_ref_in_trait(ty_multi: &&Ty<'_>, ty_ctxt_multi: &&&&TyCtxt<'_, '_, '_>) {}
+}
+
+impl Foo {
+    fn ty_by_ref_assoc(
+        ty_val: Ty<'_>,
+        ty_ref: &Ty<'_>, //~ ERROR passing `Ty<'_>` by reference
+        ty_ctxt_val: TyCtxt<'_, '_, '_>,
+        ty_ctxt_ref: &TyCtxt<'_, '_, '_>, //~ ERROR passing `TyCtxt<'_, '_, '_>` by reference
+    ) {
+    }
+
+    fn ty_multi_ref_assoc(ty_multi: &&Ty<'_>, ty_ctxt_multi: &&&&TyCtxt<'_, '_, '_>) {}
+    //~^ ERROR passing `Ty<'_>` by reference
+    //~^^ ERROR passing `TyCtxt<'_, '_, '_>` by reference
+}
+
+fn main() {}

src/test/ui-fulldeps/internal-lints/qualified_ty_ty_ctxt.rs

+// compile-flags: -Z unstable-options
+
+#![feature(rustc_private)]
+#![deny(usage_of_qualified_ty)]
+#![allow(unused)]
+
+extern crate rustc;
+
+use rustc::ty::{self, Ty, TyCtxt};
+
+macro_rules! qualified_macro {
+    ($a:ident) => {
+        fn ty_in_macro(
+            ty_q: ty::Ty<'_>,
+            ty: Ty<'_>,
+            ty_ctxt_q: ty::TyCtxt<'_, '_, '_>,
+            ty_ctxt: TyCtxt<'_, '_, '_>,
+        ) {
+            println!("{}", stringify!($a));
+        }
+    };
+}
+
+fn ty_qualified(
+    ty_q: ty::Ty<'_>, //~ ERROR usage of qualified `ty::Ty<'_>`
+    ty: Ty<'_>,
+    ty_ctxt_q: ty::TyCtxt<'_, '_, '_>, //~ ERROR usage of qualified `ty::TyCtxt<'_, '_, '_>`
+    ty_ctxt: TyCtxt<'_, '_, '_>,
+) {
+}
+
+
+fn main() {
+    qualified_macro!(a);
+}