Fix for #23150

1 files changed, 17 insertions, 0 deletions

diff --git a/src/libcoretest/fmt/float.rs b/src/libcoretest/fmt/float.rs
new file mode 100644
index 00000000000..6b14fa8be8e
--- /dev/null
+++ b/src/libcoretest/fmt/float.rs
@@ -0,0 +1,17 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#[test]
+fn test_format_float() {
+    assert!("1" == format!("{:.0}", 1.0f64));
+    assert!("9" == format!("{:.0}", 9.4f64));
+    assert!("10" == format!("{:.0}", 9.9f64));
+    assert!("9.9" == format!("{:.1}", 9.85f64));
+}