1 files changed, 14 insertions, 0 deletions
diff --git a/third_party/rust/regex/tests/shortest_match.rs b/third_party/rust/regex/tests/shortest_match.rs
new file mode 100644
index 0000000000..f8b4fed156
--- /dev/null
+++ b/third_party/rust/regex/tests/shortest_match.rs
@@ -0,0 +1,14 @@
+macro_rules! shortmat {
+    ($name:ident, $re:expr, $text:expr, $shortest_match:expr) => {
+        #[test]
+        fn $name() {
+            let text = text!($text);
+            let re = regex!($re);
+            assert_eq!($shortest_match, re.shortest_match(text));
+        }
+    };
+}
+
+shortmat!(t01, r"a+", r"aa", Some(1));
+// Test that the reverse suffix optimization gets it right.
+shortmat!(t02, r".*(?:abcd)+", r"abcdabcd", Some(4));