From 9b8a6b97e5fc08a8f5a1aedc803e1f7b44dd50b5 Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume.gomez@huawei.com>
Date: Sun, 27 Feb 2022 12:07:54 +0100
Subject: [PATCH] Add test to ensure that links to impls are correctly
generated
---
src/test/rustdoc/issue-78701.rs | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
create mode 100644 src/test/rustdoc/issue-78701.rs
diff --git a/src/test/rustdoc/issue-78701.rs b/src/test/rustdoc/issue-78701.rs
new file mode 100644
index 00000000000..796d553fac4
--- /dev/null
+++ b/src/test/rustdoc/issue-78701.rs
@@ -0,0 +1,20 @@
+#![crate_name = "foo"]
+
+// This test ensures that if a blanket impl has the same ID as another impl, it'll
+// link to the blanket impl and not the other impl. Basically, we're checking if
+// the ID is correctly derived.
+
+// @has 'foo/struct.AnotherStruct.html'
+// @count - '//*[@class="sidebar"]//a[@href="#impl-AnAmazingTrait"]' 1
+// @count - '//*[@class="sidebar"]//a[@href="#impl-AnAmazingTrait-1"]' 1
+
+pub trait Something {}
+
+pub trait AnAmazingTrait {}
+
+impl<T: Something> AnAmazingTrait for T {}
+
+pub struct AnotherStruct<T>(T);
+
+impl<T: Something> Something for AnotherStruct<T> {}
+impl AnAmazingTrait for AnotherStruct<()> {}