refactor to work as a lib

tests/test_config.rs

@@ -0,0 +1,20 @@
+use dns_config;
+
+#[test]
+fn test_config() {
+    let zone_data =
+        dns_config::ServerZonesConnection::get_config(&"config_template.toml".to_string()).unwrap();
+    assert_eq!(zone_data.root_domain, "root.domain.example");
+    assert_eq!(
+        zone_data.servers_data.get(1).unwrap().conection_str,
+        "udp://192.168.1.1:53"
+    );
+    assert_eq!(
+        zone_data.servers_data.get(0).unwrap().key,
+        "key 0 in base64"
+    );
+    assert_eq!(
+        zone_data.servers_data.get(1).unwrap().key_name,
+        "key 1 name"
+    );
+}