plonky2/evm/src/cpu/kernel/tests/ripemd.rs

use anyhow::Result;
use ethereum_types::U256;

use crate::cpu::kernel::aggregator::combined_kernel;
use crate::cpu::kernel::interpreter::run_with_kernel;

#[test]
fn test_ripemd() -> Result<()> {
    let input: Vec<u32> = vec![
        26, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e,
        0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a,
    ];

    let kernel = combined_kernel();
    let stack_input: Vec<U256> = input.iter().map(|&x| U256::from(x as u32)).rev().collect();
    let stack_output = run_with_kernel(&kernel, kernel.global_labels["ripemd_alt"], stack_input)?;
    let actual: String = stack_output
        .stack()
        .iter()
        .map(|&x| format!("{:x}", x))
        .rev()
        .collect();

    let expected = "f71c27109c692c1b56bbdceb5b9d2865b3708dbc";
    assert_eq!(expected, actual);

    Ok(())
}