From d9ea7bc98d760b1bfabf192bbadf7e73df0ade68 Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume.gomez@huawei.com>
Date: Mon, 14 Feb 2022 21:42:36 +0100
Subject: [PATCH] Add test for duplicated macros in the sidebar

---
 src/test/rustdoc-gui/duplicate-macro-reexport.goml | 14 ++++++++++++++
 src/test/rustdoc-gui/src/test_docs/lib.rs          |  3 +++
 src/test/rustdoc-gui/src/test_docs/macros.rs       |  4 ++++
 3 files changed, 21 insertions(+)
 create mode 100644 src/test/rustdoc-gui/duplicate-macro-reexport.goml
 create mode 100644 src/test/rustdoc-gui/src/test_docs/macros.rs

diff --git a/src/test/rustdoc-gui/duplicate-macro-reexport.goml b/src/test/rustdoc-gui/duplicate-macro-reexport.goml
new file mode 100644
index 00000000000..c79b3a220c4
--- /dev/null
+++ b/src/test/rustdoc-gui/duplicate-macro-reexport.goml
@@ -0,0 +1,14 @@
+// This test ensures that there is no macro duplicates in the sidebar.
+goto: file://|DOC_PATH|/test_docs/macro.a.html
+// Waiting for the elements in the sidebar to be rendered.
+wait-for: ".sidebar-elems .others .macro"
+// Check there is only one macro named "a" listed in the sidebar.
+assert-count: (
+    "//*[@class='sidebar-elems']//*[@class='others']/*[@class='block macro']//li/a[text()='a']",
+    1,
+)
+// Check there is only one macro named "b" listed in the sidebar.
+assert-count: (
+    "//*[@class='sidebar-elems']//*[@class='others']/*[@class='block macro']//li/a[text()='b']",
+    1,
+)
diff --git a/src/test/rustdoc-gui/src/test_docs/lib.rs b/src/test/rustdoc-gui/src/test_docs/lib.rs
index 2068d1d6f39..348b1a65c78 100644
--- a/src/test/rustdoc-gui/src/test_docs/lib.rs
+++ b/src/test/rustdoc-gui/src/test_docs/lib.rs
@@ -271,3 +271,6 @@ impl EmptyTrait1 for HasEmptyTraits {}
 impl EmptyTrait2 for HasEmptyTraits {}
 #[doc(cfg(feature = "some-feature"))]
 impl EmptyTrait3 for HasEmptyTraits {}
+
+mod macros;
+pub use macros::*;
diff --git a/src/test/rustdoc-gui/src/test_docs/macros.rs b/src/test/rustdoc-gui/src/test_docs/macros.rs
new file mode 100644
index 00000000000..07b2b97926d
--- /dev/null
+++ b/src/test/rustdoc-gui/src/test_docs/macros.rs
@@ -0,0 +1,4 @@
+#[macro_export]
+macro_rules! a{ () => {}}
+#[macro_export]
+macro_rules! b{ () => {}}