Adding latest + tests

src/hands.rs

@@ -0,0 +1,22 @@
+pub fn handify(input: &str) -> String {
+    let input = input.to_uppercase();
+    let input = input.replace(" ", " 👏 ");
+    println!("{:?}", input.split_whitespace().collect::<Vec<&str>>());
+    input
+}
+
+#[test]
+fn handify_test_no_trailing_spaces() {
+    let input = "hello world";
+    assert_eq!(handify(input), "HELLO 👏 WORLD");
+}
+
+#[test]
+// NOTE: Failing because of trailing whitespace
+fn handify_test_with_trailing_spaces() {
+    let input = " hello world ";
+    assert_eq!(handify(input), "👏 HELLO 👏 WORLD 👏")
+}
+
+// TODO: trim leading + tailing white space
+// TODO: handle an empty string