1 files changed, 44 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/single_char_lifetime_names.rs b/src/tools/clippy/tests/ui/single_char_lifetime_names.rs
new file mode 100644
index 000000000..69c5b236f
--- /dev/null
+++ b/src/tools/clippy/tests/ui/single_char_lifetime_names.rs
@@ -0,0 +1,44 @@
+#![warn(clippy::single_char_lifetime_names)]
+#![allow(clippy::let_unit_value)]
+
+// Lifetimes should only be linted when they're introduced
+struct DiagnosticCtx<'a, 'b>
+where
+    'a: 'b,
+{
+    _source: &'a str,
+    _unit: &'b (),
+}
+
+// Only the lifetimes on the `impl`'s generics should be linted
+impl<'a, 'b> DiagnosticCtx<'a, 'b> {
+    fn new(source: &'a str, unit: &'b ()) -> DiagnosticCtx<'a, 'b> {
+        Self {
+            _source: source,
+            _unit: unit,
+        }
+    }
+}
+
+// No lifetimes should be linted here
+impl<'src, 'unit> DiagnosticCtx<'src, 'unit> {
+    fn new_pass(source: &'src str, unit: &'unit ()) -> DiagnosticCtx<'src, 'unit> {
+        Self {
+            _source: source,
+            _unit: unit,
+        }
+    }
+}
+
+// Only 'a should be linted here
+fn split_once<'a>(base: &'a str, other: &'_ str) -> (&'a str, Option<&'a str>) {
+    base.split_once(other)
+        .map(|(left, right)| (left, Some(right)))
+        .unwrap_or((base, None))
+}
+
+fn main() {
+    let src = "loop {}";
+    let unit = ();
+    DiagnosticCtx::new(src, &unit);
+}