add pi to min/max

tests/command.rs

@@ -0,0 +1,13 @@
+use std::process::Command;
+use std::env;
+
+pub fn get_command() -> Command {
+    let exe = env::current_exe().unwrap();
+    let path = exe.to_str().unwrap();
+    let cmd = if path.contains("release") {
+        "./target/release/wham"
+    } else {
+        "./target/debug/wham"
+    };
+    Command::new(cmd)
+}