Use #[doc(hidden)] instead of #[allow(missing_docs)] on the const generated for #[test]

Author: ogoffart

compiler/rustc_builtin_macros/src/test.rs

@@ -277,8 +277,8 @@ pub(crate) fn expand_test_or_bench(
                 cx.attr_nested_word(sym::cfg, sym::test, attr_sp),
                 // #[rustc_test_marker = "test_case_sort_key"]
                 cx.attr_name_value_str(sym::rustc_test_marker, test_path_symbol, attr_sp),
-                // #[allow(missing_docs)]
-                cx.attr_nested_word(sym::allow, sym::missing_docs, attr_sp),
+                // #[doc(hidden)]
+                cx.attr_nested_word(sym::doc, sym::hidden, attr_sp),
             ],
             // const $ident: test::TestDescAndFn =
             ast::ItemKind::Const(

tests/pretty/tests-are-sorted.pp

@@ -12,7 +12,7 @@
 extern crate test;
 #[cfg(test)]
 #[rustc_test_marker = "m_test"]
-#[allow(missing_docs)]
+#[doc(hidden)]
 pub const m_test: test::TestDescAndFn =
     test::TestDescAndFn {
         desc: test::TestDesc {
@@ -37,7 +37,7 @@
 extern crate test;
 #[cfg(test)]
 #[rustc_test_marker = "z_test"]
-#[allow(missing_docs)]
+#[doc(hidden)]
 pub const z_test: test::TestDescAndFn =
     test::TestDescAndFn {
         desc: test::TestDesc {
@@ -63,7 +63,7 @@
 extern crate test;
 #[cfg(test)]
 #[rustc_test_marker = "a_test"]
-#[allow(missing_docs)]
+#[doc(hidden)]
 pub const a_test: test::TestDescAndFn =
     test::TestDescAndFn {
         desc: test::TestDesc {