run each etherscan test at least 200ms

ethers-etherscan/Cargo.toml

@@ -22,7 +22,7 @@ serde-aux = { version = "3.0.1", default-features = false }
 thiserror = "1.0.29"
 
 [dev-dependencies]
-tokio = { version = "1.5", features = ["macros", "rt-multi-thread"] }
+tokio = { version = "1.5", features = ["macros", "rt-multi-thread", "time"] }
 serial_test = "0.5.1"
 
 [package.metadata.docs.rs]

ethers-etherscan/src/contract.rs

@@ -1,8 +1,11 @@
-use crate::{Client, Response, Result};
-use ethers_core::abi::{Abi, Address};
-use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 
+use serde::{Deserialize, Serialize};
+
+use ethers_core::abi::{Abi, Address};
+
+use crate::{Client, Response, Result};
+
 /// Arguments for verifying contracts
 #[derive(Debug, Clone, Serialize)]
 pub struct VerifyContract {
@@ -251,39 +254,49 @@ impl Client {
 
 #[cfg(test)]
 mod tests {
-    use crate::{contract::VerifyContract, Client};
-    use ethers_core::types::Chain;
+    use std::time::Duration;
 
     use serial_test::serial;
 
+    use ethers_core::types::Chain;
+
+    use crate::{contract::VerifyContract, tests::run_at_least_duration, Client};
+
     #[tokio::test]
     #[serial]
     #[ignore]
     async fn can_fetch_contract_abi() {
+        run_at_least_duration(Duration::from_millis(200), async {
             let client = Client::new_from_env(Chain::Mainnet).unwrap();
 
             let _abi = client
                 .contract_abi("0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413".parse().unwrap())
                 .await
                 .unwrap();
+        })
+        .await;
     }
 
     #[tokio::test]
     #[serial]
     #[ignore]
     async fn can_fetch_contract_source_code() {
+        run_at_least_duration(Duration::from_millis(200), async {
             let client = Client::new_from_env(Chain::Mainnet).unwrap();
 
             let _meta = client
                 .contract_source_code("0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413".parse().unwrap())
                 .await
                 .unwrap();
+        })
+        .await
     }
 
     #[tokio::test]
     #[serial]
     #[ignore]
     async fn can_verify_contract() {
+        run_at_least_duration(Duration::from_millis(200), async {
             // TODO this needs further investigation
 
             // https://etherscan.io/address/0x9e744c9115b74834c0f33f4097f40c02a9ac5c33#code
@@ -301,5 +314,6 @@ mod tests {
                     .runs(200);
 
             let _resp = client.submit_contract_verification(&contract).await;
+        }).await
     }
 }

ethers-etherscan/src/gas.rs

@@ -70,35 +70,46 @@ impl Client {
 
 #[cfg(test)]
 mod tests {
+    use std::time::Duration;
+
     use serial_test::serial;
 
     use ethers_core::types::Chain;
 
+    use crate::tests::run_at_least_duration;
+
     use super::*;
 
     #[tokio::test]
     #[serial]
     async fn gas_estimate_success() {
+        run_at_least_duration(Duration::from_millis(200), async {
             let client = Client::new_from_env(Chain::Mainnet).unwrap();
 
             let result = client.gas_estimate(2000000000u32.into()).await;
 
             assert!(result.is_ok());
+        })
+        .await
     }
 
     #[tokio::test]
     #[serial]
     async fn gas_estimate_error() {
+        run_at_least_duration(Duration::from_millis(200), async {
             let client = Client::new_from_env(Chain::Mainnet).unwrap();
 
             let err = client.gas_estimate(7123189371829732819379218u128.into()).await.unwrap_err();
 
             assert!(matches!(err, EtherscanError::GasEstimationFailed));
+        })
+        .await
     }
 
     #[tokio::test]
     #[serial]
     async fn gas_oracle_success() {
+        run_at_least_duration(Duration::from_millis(200), async {
             let client = Client::new_from_env(Chain::Mainnet).unwrap();
 
             let result = client.gas_oracle().await;
@@ -113,5 +124,7 @@ mod tests {
             assert!(oracle.last_block > 0);
             assert!(oracle.suggested_base_fee > 0.0);
             assert!(oracle.gas_used_ratio.len() > 0);
+        })
+        .await
     }
 }

ethers-etherscan/src/lib.rs

@@ -78,8 +78,7 @@ impl Client {
             Chain::Mainnet | Chain::Ropsten | Chain::Kovan | Chain::Rinkeby | Chain::Goerli => {
                 std::env::var("ETHERSCAN_API_KEY")?
             }
-            Chain::XDai => String::default(),
-            chain => return Err(EtherscanError::ChainNotSupported(chain)),
+            _ => String::default(),
         };
         Self::new(chain, api_key)
     }
@@ -176,6 +175,11 @@ struct Query<'a, T: Serialize> {
 
 #[cfg(test)]
 mod tests {
+    use std::{
+        future::Future,
+        time::{Duration, SystemTime},
+    };
+
     use ethers_core::types::Chain;
 
     use crate::{Client, EtherscanError};
@@ -187,4 +191,12 @@ mod tests {
         assert!(matches!(err, EtherscanError::ChainNotSupported(_)));
         assert_eq!(err.to_string(), "chain XDai not supported");
     }
+
+    pub async fn run_at_least_duration(duration: Duration, block: impl Future) {
+        let start = SystemTime::now();
+        block.await;
+        if let Some(sleep) = duration.checked_sub(start.elapsed().unwrap()) {
+            tokio::time::sleep(sleep).await;
+        }
+    }
 }

ethers-etherscan/src/transaction.rs

@@ -52,15 +52,18 @@ impl Client {
 
 #[cfg(test)]
 mod tests {
+    use std::time::Duration;
+
     use serial_test::serial;
 
-    use crate::Chain;
+    use crate::{tests::run_at_least_duration, Chain};
 
     use super::*;
 
     #[tokio::test]
     #[serial]
     async fn check_contract_execution_status_success() {
+        run_at_least_duration(Duration::from_millis(200), async {
             let client = Client::new_from_env(Chain::Mainnet).unwrap();
 
             let status = client
@@ -70,11 +73,14 @@ mod tests {
                 .await;
 
             assert!(status.is_ok());
+        })
+        .await
     }
 
     #[tokio::test]
     #[serial]
     async fn check_contract_execution_status_error() {
+        run_at_least_duration(Duration::from_millis(200), async {
             let client = Client::new_from_env(Chain::Mainnet).unwrap();
 
             let err = client
@@ -86,11 +92,14 @@ mod tests {
 
             assert!(matches!(err, EtherscanError::ExecutionFailed(_)));
             assert_eq!(err.to_string(), "contract execution call failed: Bad jump destination");
+        })
+        .await
     }
 
     #[tokio::test]
     #[serial]
     async fn check_transaction_receipt_status_success() {
+        run_at_least_duration(Duration::from_millis(200), async {
             let client = Client::new_from_env(Chain::Mainnet).unwrap();
 
             let success = client
@@ -100,11 +109,14 @@ mod tests {
                 .await;
 
             assert!(success.is_ok());
+        })
+        .await
     }
 
     #[tokio::test]
     #[serial]
     async fn check_transaction_receipt_status_failed() {
+        run_at_least_duration(Duration::from_millis(200), async {
             let client = Client::new_from_env(Chain::Mainnet).unwrap();
 
             let err = client
@@ -115,5 +127,7 @@ mod tests {
                 .unwrap_err();
 
             assert!(matches!(err, EtherscanError::TransactionReceiptFailed));
+        })
+        .await
     }
 }