Add RPC eth_symbol test (eip-3014)

rpc/src/v1/impls/eth.rs

@@ -597,6 +597,11 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM, T: StateInfo + 'static> Eth for EthClient<
  Ok(self.client.signing_chain_id().map(U64::from))
  }
 
+ fn symbol(&self) -> Result<String> {
+ // TODO: symbol should be configurable
+ Ok("ETH".to_string())
+ }
+
  fn hashrate(&self) -> Result<U256> {
  Ok(self.external_miner.hashrate())
  }

rpc/src/v1/impls/light/eth.rs

@@ -266,6 +266,11 @@ where
  Ok(self.client.signing_chain_id().map(U64::from))
  }
 
+ fn symbol(&self) -> Result<String> {
+ // TODO: symbol should be configurable
+ Ok("ETH".to_string())
+ }
+
  fn hashrate(&self) -> Result<U256> {
  Ok(Default::default())
  }

rpc/src/v1/tests/mocked/eth.rs

@@ -187,6 +187,15 @@ fn rpc_eth_chain_id() {
  assert_eq!(tester.io.handle_request_sync(request), Some(response.to_owned()));
 }
 
+#[test]
+fn rpc_eth_symbol() {
+ let tester = EthTester::default();
+ let request = r#"{"jsonrpc": "2.0", "method": "eth_symbol", "params": [], "id": 1}"#;
+ let response = r#"{"jsonrpc":"2.0","result":null,"id":1}"#;
+
+ assert_eq!(tester.io.handle_request_sync(request), Some(response.to_owned()));
+}
+
 #[test]
 fn rpc_eth_hashrate() {
  let tester = EthTester::default();

rpc/src/v1/traits/eth.rs

@@ -54,6 +54,10 @@ pub trait Eth {
  #[rpc(name = "eth_chainId")]
  fn chain_id(&self) -> Result<Option<U64>>;
 
+ /// Returns native coin symbol.
+ #[rpc(name = "eth_symbol")]
+ fn symbol(&self) -> Result<String>;
+
  /// Returns current gas_price.
  #[rpc(name = "eth_gasPrice")]
  fn gas_price(&self) -> BoxFuture<U256>;