// tests/default/executable.rs use event_handlers_types::traits::Executable; struct DummyExecutable; impl Executable for DummyExecutable { fn execute(&mut self) -> Result<(), String> { Ok(()) } } #[test] fn executable_should_execute_successfully() { // Arrange let mut executable = DummyExecutable; // Act let result = executable.execute(); // Assert assert!(result.is_ok()); }