solana/cli/src/test_utils.rs

use solana_client::rpc_client::RpcClient;
use solana_sdk::pubkey::Pubkey;
use std::{thread::sleep, time::Duration};

pub fn check_balance(expected_balance: u64, client: &RpcClient, pubkey: &Pubkey) {
    (0..5).for_each(|tries| {
        let balance = client.get_balance(pubkey).unwrap();
        if balance == expected_balance {
            return;
        }
        if tries == 4 {
            assert_eq!(balance, expected_balance);
        }
        sleep(Duration::from_millis(500));
    });
}