Rewrite Reverse String Tests using Macro (#811)

chore(tests): rewrite tests using macro

src/string/reverse.rs

@@ -1,3 +1,12 @@
+/// Reverses the given string.
+///
+/// # Arguments
+///
+/// * `text` - A string slice that holds the string to be reversed.
+///
+/// # Returns
+///
+/// * A new `String` that is the reverse of the input string.
 pub fn reverse(text: &str) -> String {
     text.chars().rev().collect()
 }
@@ -6,18 +15,26 @@ pub fn reverse(text: &str) -> String {
 mod tests {
     use super::*;
 
-    #[test]
-    fn test_simple() {
-        assert_eq!(reverse("racecar"), "racecar");
+    macro_rules! test_cases {
+        ($($name:ident: $test_case:expr,)*) => {
+            $(
+                #[test]
+                fn $name() {
+                    let (input, expected) = $test_case;
+                    assert_eq!(reverse(input), expected);
+                }
+            )*
+        };
     }
 
-    #[test]
-    fn test_assymetric() {
-        assert_eq!(reverse("abcdef"), "fedcba")
-    }
-
-    #[test]
-    fn test_sentence() {
-        assert_eq!(reverse("step on no pets"), "step on no pets");
+    test_cases! {
+        test_simple_palindrome: ("racecar", "racecar"),
+        test_non_palindrome: ("abcdef", "fedcba"),
+        test_sentence_with_spaces: ("step on no pets", "step on no pets"),
+        test_empty_string: ("", ""),
+        test_single_character: ("a", "a"),
+        test_leading_trailing_spaces: ("  hello  ", "  olleh  "),
+        test_unicode_characters: ("你好", "好你"),
+        test_mixed_content: ("a1b2c3!", "!3c2b1a"),
     }
 }