From 98aa20b0a7ee519b23f37d76c1d093f50c43d863 Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume.gomez@huawei.com>
Date: Tue, 12 Dec 2023 14:27:35 +0100
Subject: [PATCH] Add test for `rustX` codeblock attribute

---
 tests/rustdoc-ui/lints/check-attr.rs     |  8 ++++++++
 tests/rustdoc-ui/lints/check-attr.stderr | 13 ++++++++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/tests/rustdoc-ui/lints/check-attr.rs b/tests/rustdoc-ui/lints/check-attr.rs
index 0b3f7bedda5cf..38f5b3851d03d 100644
--- a/tests/rustdoc-ui/lints/check-attr.rs
+++ b/tests/rustdoc-ui/lints/check-attr.rs
@@ -39,3 +39,11 @@ pub fn foobar() {}
 /// boo
 /// ```
 pub fn b() {}
+
+/// b
+//~^ ERROR
+///
+/// ```rust2018
+/// boo
+/// ```
+pub fn c() {}
diff --git a/tests/rustdoc-ui/lints/check-attr.stderr b/tests/rustdoc-ui/lints/check-attr.stderr
index f66e63ab727ea..cd2f1eea7ce45 100644
--- a/tests/rustdoc-ui/lints/check-attr.stderr
+++ b/tests/rustdoc-ui/lints/check-attr.stderr
@@ -171,5 +171,16 @@ LL | | /// ```
    |
    = help: the code block will either not be tested if not marked as a rust one or the code will be wrapped inside a main function
 
-error: aborting due to 12 previous errors
+error: unknown attribute `rust2018`. Did you mean `edition2018`?
+  --> $DIR/check-attr.rs:43:1
+   |
+LL | / /// b
+LL | |
+LL | | ///
+LL | | /// ```rust2018
+LL | | /// boo
+LL | | /// ```
+   | |_______^
+
+error: aborting due to 13 previous errors