test: check for relay health after startup

tests/integration_test.rs

@@ -1,12 +1,20 @@
 use anyhow::Result;
+use log::*;
 use std::thread;
 use std::time::Duration;
 
 mod common;
 
-#[test]
-fn startup() -> Result<()> {
+#[tokio::test]
+async fn start_and_stop() -> Result<()> {
+    // this will be the common pattern for acquiring a new relay:
+    // start a fresh relay, on a port to-be-provided back to us:
     let relay = common::start_relay()?;
+    // wait for the relay's webserver to start up and deliver a page:
+    common::wait_for_healthy_relay(&relay).await?;
+
+    let relay = common::start_relay()?;
+    let port = relay.port;
     // just make sure we can startup and shut down.
     // if we send a shutdown message before the server is listening,
     // we will get a SendError.  Keep sending until someone is
@@ -25,5 +33,15 @@ fn startup() -> Result<()> {
     // wait for relay to shutdown
     let thread_join = relay.handle.join();
     assert!(thread_join.is_ok());
+    // assert that port is now available.
+    assert!(common::port_is_available(port));
+    Ok(())
+}
+
+#[tokio::test]
+async fn relay_home_page() -> Result<()> {
+    // get a relay and wait for startup...
+    let relay = common::start_relay()?;
+    common::wait_for_healthy_relay(&relay).await?;
     Ok(())
 }