--- /dev/null
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// compile-flags: --test
+
+#![test] //~ ERROR only functions may be used as tests
--- /dev/null
+error: only functions may be used as tests
+ --> $DIR/issue-28134.rs:13:1
+ |
+LL | #![test] //~ ERROR only functions may be used as tests
+ | ^^^^^^^^
+
+error: aborting due to previous error
+