1 files changed, 18 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/unused_format_specs.rs b/src/tools/clippy/tests/ui/unused_format_specs.rs
new file mode 100644
index 000000000..ee192a000
--- /dev/null
+++ b/src/tools/clippy/tests/ui/unused_format_specs.rs
@@ -0,0 +1,18 @@
+// run-rustfix
+
+#![warn(clippy::unused_format_specs)]
+#![allow(unused)]
+
+fn main() {
+    let f = 1.0f64;
+    println!("{:.}", 1.0);
+    println!("{f:.} {f:.?}");
+
+    println!("{:.}", 1);
+}
+
+fn should_not_lint() {
+    let f = 1.0f64;
+    println!("{:.1}", 1.0);
+    println!("{f:.w$} {f:.*?}", 3, w = 2);
+}