add 'stop' test

api.w

@@ -1,9 +1,11 @@
 interface IWorkload {
-  /** starts the workload */
+  /** starts the container */
   inflight start(): void;
 
-  /** stops containers */
+  /** stops the container */
   inflight stop(): void;
+
+  /** if `port` is specified, this includes the external url of the container */
   inflight url(): str?;
 }
 

test/containers.test.w

@@ -12,10 +12,32 @@ let hello = new containers.Workload(
   }
 );
 
-test "workload started" {
+let getBody = inflight (): str? => {
   if let url = hello.url() {
-    assert(http.get(url).body?.contains(message) ?? false);
-  } else {
-    assert(false);
+    return http.get(url).body;
   }
+
+  return nil;
+};
+
+
+test "container started automatically and port exposed" {
+  let body = getBody();
+  assert(body?.contains(message) ?? false);
+}
+
+test "container stopped after stop() is called" {
+  assert(getBody()?);
+
+  // stop the container and check that there is no body
+  hello.stop();
+
+  // check that we can't reach the container
+  let var error = false;
+  try {
+    getBody();
+  } catch {
+    error = true;
+  }
+  assert(error);
 }