1 files changed, 22 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/unnecessary_owned_empty_strings.rs b/src/tools/clippy/tests/ui/unnecessary_owned_empty_strings.rs
new file mode 100644
index 000000000..0cbdc151e
--- /dev/null
+++ b/src/tools/clippy/tests/ui/unnecessary_owned_empty_strings.rs
@@ -0,0 +1,22 @@
+// run-rustfix
+
+#![warn(clippy::unnecessary_owned_empty_strings)]
+
+fn ref_str_argument(_value: &str) {}
+
+#[allow(clippy::ptr_arg)]
+fn ref_string_argument(_value: &String) {}
+
+fn main() {
+    // should be linted
+    ref_str_argument(&String::new());
+
+    // should be linted
+    ref_str_argument(&String::from(""));
+
+    // should not be linted
+    ref_str_argument("");
+
+    // should not be linted
+    ref_string_argument(&String::new());
+}