1 files changed, 7 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/format_push_string.rs b/src/tools/clippy/tests/ui/format_push_string.rs
new file mode 100644
index 000000000..4db13d650
--- /dev/null
+++ b/src/tools/clippy/tests/ui/format_push_string.rs
@@ -0,0 +1,7 @@
+#![warn(clippy::format_push_string)]
+
+fn main() {
+    let mut string = String::new();
+    string += &format!("{:?}", 1234);
+    string.push_str(&format!("{:?}", 5678));
+}