Add attributes for trait and methods as well

src/test/rustdoc/trait-attributes.rs

@@ -0,0 +1,32 @@
+// 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.
+
+#![crate_name = "foo"]
+
+// ignore-tidy-linelength
+
+pub trait Foo {
+    // @has foo/trait.Foo.html '//h3[@id="tymethod.foo"]//div[@class="docblock attributes"]' '#[must_use]'
+    #[must_use]
+    fn foo();
+}
+
+#[must_use]
+pub struct Bar;
+
+impl Bar {
+    // @has foo/struct.Bar.html '//h4[@id="method.bar"]//div[@class="docblock attributes"]' '#[must_use]'
+    #[must_use]
+    pub fn bar() {}
+
+    // @has foo/struct.Bar.html '//h4[@id="method.bar2"]//div[@class="docblock attributes"]' '#[must_use]'
+    #[must_use]
+    pub fn bar2() {}
+}