add: test helper binaries

src/bin/test-helper/dummy.rs

@@ -0,0 +1,11 @@
+use std::{env, thread, time};
+
+
+fn main() {
+    let myi: u64;
+    let args: Vec<String> = env::args().collect();
+    if args.len() > 1 {
+        myi = args[1].parse().unwrap();
+        thread::sleep(time::Duration::from_secs(myi));
+    }
+}

src/bin/test-helper/spawner.rs

@@ -0,0 +1,15 @@
+use std::error::Error;
+use std::process::Command;
+use std::env;
+
+fn main() -> Result<(), Box<dyn Error>> {
+    let args: Vec<String> = env::args().collect();
+    if args.len() > 1 {
+        let x: u64 = args[1].parse()?;
+        for _i in 0..x {
+            // println!("spawning {}", _i);
+            Command::new("/usr/local/bin/dummy").arg("10").spawn()?;
+        }
+    }
+    Ok(())
+}