chore: add test coverage

src/apps/v1/roles/roles_enum.rs

@@ -0,0 +1,19 @@
+use std::fmt;
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum RolesEnum {
+	Admin,
+	Student,
+	Staf,
+}
+
+impl fmt::Display for RolesEnum {
+	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+		let roles_str = match self {
+			RolesEnum::Admin => "Admin",
+			RolesEnum::Student => "Student",
+			RolesEnum::Staf => "Staf",
+		};
+		write!(f, "{}", roles_str)
+	}
+}