diff --git a/src/lib.rs b/src/lib.rs
index 182d096..c52f468 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -216,7 +216,14 @@ fn get_tree() {
 
 #[test]
 fn get_marks() {
-    // todo!()
+    let mut sway = Sway::new(env!("SWAYSOCK")).unwrap();
+    sway.run_command("unmark").unwrap();
+    sway.run_command("mark test").unwrap();
+    match sway.get_marks() {
+        Ok(response) => assert_eq!(response.into_iter().nth(0).unwrap(), "test"),
+        Err(e) => panic!("{}", e.to_string()),
+    }
+    sway.run_command("unmark").unwrap();
 }
 
 #[test]