well...almost done with engine options

tests/lib.rs

@@ -92,6 +92,13 @@ fn engine_option_string() {
       option_data: option_data1,
     };
 
-    let expected = "option name hash type spin default 1 min 1 max 128";
+    let expected = "option name hash type spin default 1 min 1 max 128\n";
     assert_eq!(o.option_string(), expected);
 }
+
+#[test]
+fn send_available_engine_options() {
+  // This should send two to three options and check the string in the
+  // buffer to make sure it's correct.
+  assert_eq!(true, false);
+}