Macro sewup_derive::ewasm_assert_eq

ewasm_assert_eq!() { /* proc-macro */ }

helps you assert output from the handle of a contract with Vec<u8>.

#[ewasm_test]
mod tests {
    use super::*;

    #[ewasm_test]
    fn test_execute_basic_operations() {
        ewasm_assert_eq!(handler_fn(), vec![74, 111, 118, 121]);
    }
}

Besides, you can run the handler as a block chan user with by syntax

ewasm_assert_eq!(handler_fn() by "eD5897cCEa7aee785D31cdcA87Cf59D1D041aAFC", vec![74, 111, 118, 121]);