diff --git a/src/main.rs b/src/main.rs
index 54ab73b..bc9abe5 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,19 +2,42 @@
 fn main() {
 
     let args = vec![
-        "string1",
-        "string2",
+        "01|15|59, 1|47|16, 01|17|20, 1|32|34, 2|17|17",
+        "02|15|59, 2|47|16, 02|17|20, 2|32|34, 2|17|17, 2|22|00, 2|31|41",
     ];
 
     println!();
 
     for arg in args {
-        println!("{}",func(&arg));
+        println!("{:?}\n{:?}\n", arg, stati(arg));
     };
 
     println!();
 }
 
-fn func(s: &str) -> String {
+fn stati(s: &str) -> String {
     s.into()
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn dotest(strg: &str, exp: &str) -> () {
+        println!(" str: {:?};", strg);
+        let ans = stati(strg);
+        println!(" actual:\n{:?};", ans);
+        println!("expect:\n{:?};", exp);
+        println!(" {};", ans == exp);
+        assert_eq!(ans, exp);
+        println!("{};", "-");
+    }
+
+    #[test]
+    fn basic_tests() {
+        dotest("01|15|59, 1|47|16, 01|17|20, 1|32|34, 2|17|17",
+                "Range: 01|01|18 Average: 01|38|05 Median: 01|32|34");
+        dotest("02|15|59, 2|47|16, 02|17|20, 2|32|34, 2|17|17, 2|22|00, 2|31|41",
+                "Range: 00|31|17 Average: 02|26|18 Median: 02|22|00");
+    }
+}