diff --git a/src/string/tests.rs b/src/string/tests.rs
index b021970..744effe 100644
--- a/src/string/tests.rs
+++ b/src/string/tests.rs
@@ -11,3 +11,14 @@ fn data_getter() {
     let data = _s.get_data();
     assert!(data.is_empty());
 }
+
+#[test]
+fn data_setter() {
+    let mut _data: Vec<char> = vec!['H', 'U', 'G'];
+    let mut _s: Str = Str::new();
+    _s.set_data(&_data);
+    let _d = _s.get_data();
+    assert_eq!(_d[0], 'H');
+    assert_eq!(_d[1], 'U');
+    assert_eq!(_d[2], 'G');
+}