diff --git a/src/string.rs b/src/string.rs
index 02f24e0..6db8bd0 100644
--- a/src/string.rs
+++ b/src/string.rs
@@ -1,3 +1,6 @@
 mod my_str_strict;
 
 pub use my_str_strict::Str;
+
+#[cfg(test)]
+mod tests;
diff --git a/src/string/tests.rs b/src/string/tests.rs
new file mode 100644
index 0000000..e98d4d9
--- /dev/null
+++ b/src/string/tests.rs
@@ -0,0 +1,6 @@
+use super::Str;
+
+#[test]
+fn createdsucsessfuly() {
+    let _s: Str = Str::new();
+}