1 files changed, 18 insertions, 0 deletions
diff --git a/tests/ui/macros/concat-rpass.rs b/tests/ui/macros/concat-rpass.rs
new file mode 100644
index 000000000..0c30a39d6
--- /dev/null
+++ b/tests/ui/macros/concat-rpass.rs
@@ -0,0 +1,18 @@
+// run-pass
+
+pub fn main() {
+    assert_eq!(format!(concat!("foo", "bar", "{}"), "baz"), "foobarbaz".to_string());
+    assert_eq!(format!(concat!()), "".to_string());
+    // check trailing comma is allowed in concat
+    assert_eq!(concat!("qux", "quux",).to_string(), "quxquux".to_string());
+
+    assert_eq!(
+        concat!(1, 2, 3, 4f32, 4.0, 'a', true),
+        "12344.0atrue"
+    );
+
+    assert!(match "12344.0atrue" {
+        concat!(1, 2, 3, 4f32, 4.0, 'a', true) => true,
+        _ => false
+    })
+}