1 files changed, 11 insertions, 0 deletions
diff --git a/src/util/str.rs b/src/util/str.rs
index 84604bc..c3185a0 100644
--- a/src/util/str.rs
+++ b/src/util/str.rs
@@ -27,6 +27,17 @@ pub fn is_ascii_alnum(c: char) -> bool {
 mod test {
     use super::{is_ascii_alnum, lower_ascii_letter};
 
+    /// Generate a test function `$name` which asserts that `$left` and `$right`
+    /// are equal.
+    macro_rules! test_eq {
+        ($name:ident, $left:expr, $right:expr) => {
+            #[test]
+            fn $name() {
+                assert_eq!($left, $right);
+            }
+        }
+    }
+
     test_eq!(lower_letter_a_is_a, lower_ascii_letter('a'), Some('a'));
     test_eq!(lower_letter_A_is_a, lower_ascii_letter('A'), Some('a'));
     test_eq!(lower_letter_symbol_is_None, lower_ascii_letter('!'), None);