feat: add tests

__std/misc/src/bin/trait_struct_test.rs

@@ -0,0 +1,26 @@
+use std::ops::Deref;
+
+trait WithName {
+    fn get_name(&self) -> &str;
+}
+
+struct Human {
+    name: String,
+}
+
+impl Human {
+    fn new(name: String) -> Self {
+        Self { name }
+    }
+}
+
+impl WithName for Human {
+    fn get_name(&self) -> &str {
+        self.name.deref()
+    }
+}
+
+fn main() {
+    let with_name = Human::new("Hatter".into());
+    println!("With name: {}", with_name.get_name());
+}