1 files changed, 87 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/manual_non_exhaustive_enum.rs b/src/tools/clippy/tests/ui/manual_non_exhaustive_enum.rs
new file mode 100644
index 000000000..03b2433f6
--- /dev/null
+++ b/src/tools/clippy/tests/ui/manual_non_exhaustive_enum.rs
@@ -0,0 +1,87 @@
+#![feature(lint_reasons)]
+#![warn(clippy::manual_non_exhaustive)]
+#![allow(unused)]
+
+enum E {
+    A,
+    B,
+    #[doc(hidden)]
+    _C,
+}
+
+// user forgot to remove the marker
+#[non_exhaustive]
+enum Ep {
+    A,
+    B,
+    #[doc(hidden)]
+    _C,
+}
+
+// marker variant does not have doc hidden attribute, should be ignored
+enum NoDocHidden {
+    A,
+    B,
+    _C,
+}
+
+// name of variant with doc hidden does not start with underscore, should be ignored
+enum NoUnderscore {
+    A,
+    B,
+    #[doc(hidden)]
+    C,
+}
+
+// variant with doc hidden is not unit, should be ignored
+enum NotUnit {
+    A,
+    B,
+    #[doc(hidden)]
+    _C(bool),
+}
+
+// variant with doc hidden is the only one, should be ignored
+enum OnlyMarker {
+    #[doc(hidden)]
+    _A,
+}
+
+// variant with multiple markers, should be ignored
+enum MultipleMarkers {
+    A,
+    #[doc(hidden)]
+    _B,
+    #[doc(hidden)]
+    _C,
+}
+
+// already non_exhaustive and no markers, should be ignored
+#[non_exhaustive]
+enum NonExhaustive {
+    A,
+    B,
+}
+
+// marked is used, don't lint
+enum UsedHidden {
+    #[doc(hidden)]
+    _A,
+    B,
+    C,
+}
+fn foo(x: &mut UsedHidden) {
+    if matches!(*x, UsedHidden::B) {
+        *x = UsedHidden::_A;
+    }
+}
+
+#[expect(clippy::manual_non_exhaustive)]
+enum ExpectLint {
+    A,
+    B,
+    #[doc(hidden)]
+    _C,
+}
+
+fn main() {}