ethers-rs/ethers-etherscan/tests/it/main.rs

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//! Etherscan integration tests
#![cfg(not(target_arch = "wasm32"))]
use ethers_core::types::Chain;
use ethers_etherscan::{errors::EtherscanError, Client};
use std::{
future::Future,
time::{Duration, Instant},
};
mod account;
mod contract;
mod gas;
mod transaction;
mod verify;
mod version;
#[tokio::test]
async fn check_wrong_etherscan_api_key() {
let client = Client::new(Chain::Mainnet, "ABCDEFG").unwrap();
let resp = client
.contract_source_code("0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413".parse().unwrap())
.await
.unwrap_err();
assert!(matches!(resp, EtherscanError::InvalidApiKey));
}
/// Calls the function with a new Etherscan Client.
pub async fn run_with_client<F, Fut, T>(chain: Chain, f: F) -> T
where
F: FnOnce(Client) -> Fut,
Fut: Future<Output = T>,
{
init_tracing();
let (client, duration) = match Client::new_from_env(chain) {
Ok(c) => (c, rate_limit(chain, true)),
Err(_) => {
(Client::builder().chain(chain).unwrap().build().unwrap(), rate_limit(chain, false))
}
};
run_at_least_duration(duration, f(client)).await
}
#[track_caller]
fn rate_limit(chain: Chain, key: bool) -> Duration {
match (chain, key) {
// Rate limit with an API key is 5 call per second.
(_, true) => Duration::from_millis(250),
// Rate limit without an API key is 1 call every 5 seconds.
// (Chain::Mainnet, false) => Duration::from_millis(5100),
(Chain::Mainnet, false) => panic!("ETHERSCAN_API_KEY is not set"),
// Ignore other chains since we don't have more than 1 test with each.
(_, false) => Duration::ZERO,
}
}
async fn run_at_least_duration<T>(duration: Duration, block: impl Future<Output = T>) -> T {
let start = Instant::now();
let output = block.await;
let elapsed = start.elapsed();
if elapsed < duration {
tokio::time::sleep(duration - elapsed).await;
}
output
}
#[track_caller]
fn init_tracing() {
let _ = tracing_subscriber::fmt()
.with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
.try_init();
}