// Copyright 2015, 2016 Ethcore (UK) Ltd.
// This file is part of Parity.

// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with Parity.  If not, see <http://www.gnu.org/licenses/>.

use std::str::FromStr;
use std::collections::HashMap;
use std::sync::{Arc, RwLock};
use jsonrpc_core::IoHandler;
use util::hash::{Address, H256, FixedHash};
use util::numbers::{Uint, U256};
use ethcore::client::{TestBlockChainClient, EachBlockWith, Executed, TransactionId};
use ethcore::log_entry::{LocalizedLogEntry, LogEntry};
use ethcore::receipt::LocalizedReceipt;
use ethcore::transaction::{Transaction, Action};
use v1::{Eth, EthClient};
use v1::tests::helpers::{TestAccount, TestAccountProvider, TestSyncProvider, Config, TestMinerService, TestExternalMiner};

fn blockchain_client() -> Arc<TestBlockChainClient> {
	let client = TestBlockChainClient::new();
	Arc::new(client)
}

fn accounts_provider() -> Arc<TestAccountProvider> {
	let mut accounts = HashMap::new();
	accounts.insert(Address::from(1), TestAccount::new("test"));
	let ap = TestAccountProvider::new(accounts);
	Arc::new(ap)
}

fn sync_provider() -> Arc<TestSyncProvider> {
	Arc::new(TestSyncProvider::new(Config {
		network_id: U256::from(3),
		num_peers: 120,
	}))
}

fn miner_service() -> Arc<TestMinerService> {
	Arc::new(TestMinerService::default())
}

struct EthTester {
	pub client: Arc<TestBlockChainClient>,
	pub sync: Arc<TestSyncProvider>,
	pub accounts_provider: Arc<TestAccountProvider>,
	miner: Arc<TestMinerService>,
	hashrates: Arc<RwLock<HashMap<H256, U256>>>,
	pub io: IoHandler,
}

impl Default for EthTester {
	fn default() -> Self {
		let client = blockchain_client();
		let sync = sync_provider();
		let ap = accounts_provider();
		let miner = miner_service();
		let hashrates = Arc::new(RwLock::new(HashMap::new()));
		let external_miner = TestExternalMiner::new(hashrates.clone());
		let eth = EthClient::new_with_external_miner(&client, &sync, &ap, &miner, external_miner).to_delegate();
		let io = IoHandler::new();
		io.add_delegate(eth);
		EthTester {
			client: client,
			sync: sync,
			accounts_provider: ap,
			miner: miner,
			io: io,
			hashrates: hashrates,
		}
	}
}

#[test]
fn rpc_eth_protocol_version() {
	let request = r#"{"jsonrpc": "2.0", "method": "eth_protocolVersion", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","result":"63","id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
#[ignore]
fn rpc_eth_syncing() {
	unimplemented!()
}

#[test]
fn rpc_eth_hashrate() {
	let tester = EthTester::default();
	tester.hashrates.write().unwrap().insert(H256::from(0), U256::from(0xfffa));
	tester.hashrates.write().unwrap().insert(H256::from(0), U256::from(0xfffb));
	tester.hashrates.write().unwrap().insert(H256::from(1), U256::from(0x1));

	let request = r#"{"jsonrpc": "2.0", "method": "eth_hashrate", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0xfffc","id":1}"#;

	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_submit_hashrate() {
	let tester = EthTester::default();

	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_submitHashrate",
		"params": [
			"0x0000000000000000000000000000000000000000000000000000000000500000",
			"0x59daa26581d0acd1fce254fb7e85952f4c09d0915afd33d3886cd914bc7d283c"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":true,"id":1}"#;

	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
	assert_eq!(tester.hashrates.read().unwrap().get(&H256::from("0x59daa26581d0acd1fce254fb7e85952f4c09d0915afd33d3886cd914bc7d283c")).cloned(),
		Some(U256::from(0x500_000)));
}

#[test]
#[ignore]
fn rpc_eth_author() {
	unimplemented!()
}

#[test]
fn rpc_eth_mining() {
	let tester = EthTester::default();

	let request = r#"{"jsonrpc": "2.0", "method": "eth_mining", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","result":false,"id":1}"#;
	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));

	tester.hashrates.write().unwrap().insert(H256::from(1), U256::from(0x1));

	let request = r#"{"jsonrpc": "2.0", "method": "eth_mining", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","result":true,"id":1}"#;
	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_gas_price() {
	let request = r#"{"jsonrpc": "2.0", "method": "eth_gasPrice", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0x04a817c800","id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_accounts() {
	let request = r#"{"jsonrpc": "2.0", "method": "eth_accounts", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","result":["0x0000000000000000000000000000000000000001"],"id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_block_number() {
	let tester = EthTester::default();
	tester.client.add_blocks(10, EachBlockWith::Nothing);

	let request = r#"{"jsonrpc": "2.0", "method": "eth_blockNumber", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0x0a","id":1}"#;

	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_balance() {
	let tester = EthTester::default();
	tester.client.set_balance(Address::from(1), U256::from(5));

	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_getBalance",
		"params": ["0x0000000000000000000000000000000000000001", "latest"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0x05","id":1}"#;

	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_storage_at() {
	let tester = EthTester::default();
	tester.client.set_storage(Address::from(1), H256::from(4), H256::from(7));

	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_getStorageAt",
		"params": ["0x0000000000000000000000000000000000000001", "0x4", "latest"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0x07","id":1}"#;

	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_transaction_count() {
	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_getTransactionCount",
		"params": ["0x0000000000000000000000000000000000000001", "latest"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0x00","id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_block_transaction_count_by_hash() {
	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_getBlockTransactionCountByHash",
		"params": ["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":null,"id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_transaction_count_by_number() {
	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_getBlockTransactionCountByNumber",
		"params": ["latest"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0x00","id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_transaction_count_by_number_pending() {
	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_getBlockTransactionCountByNumber",
		"params": ["pending"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0x01","id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_pending_transaction_by_hash() {
	use util::*;
	use ethcore::transaction::*;

	let tester = EthTester::default();
	{
		let tx: SignedTransaction = decode(&FromHex::from_hex("f85f800182520894095e7baea6a6c7c4c2dfeb977efac326af552d870a801ba048b55bfa915ac795c431978d8a6a992b628d557da5ff759b307d495a36649353a0efffd310ac743f371de3b9f7f9cb56c0b28ad43601b4ab949f53faa07bd2c804").unwrap());
		tester.miner.pending_transactions.lock().unwrap().insert(H256::zero(), tx);
	}

	let response = r#"{"jsonrpc":"2.0","result":{"blockHash":null,"blockNumber":null,"from":"0x0f65fe9276bc9a24ae7083ae28e2660ef72df99e","gas":"0x5208","gasPrice":"0x01","hash":"0x41df922fd0d4766fcc02e161f8295ec28522f329ae487f14d811e4b64c8d6e31","input":"0x","nonce":"0x00","to":"0x095e7baea6a6c7c4c2dfeb977efac326af552d87","transactionIndex":null,"value":"0x0a"},"id":1}"#;
	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_getTransactionByHash",
		"params": ["0x0000000000000000000000000000000000000000000000000000000000000000"],
		"id": 1
	}"#;
	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}


#[test]
fn rpc_eth_uncle_count_by_block_hash() {
	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_getUncleCountByBlockHash",
		"params": ["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":null,"id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_uncle_count_by_block_number() {
	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_getUncleCountByBlockNumber",
		"params": ["latest"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0x00","id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_code() {
	let tester = EthTester::default();
	tester.client.set_code(Address::from(1), vec![0xff, 0x21]);

	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_getCode",
		"params": ["0x0000000000000000000000000000000000000001", "latest"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0xff21","id":1}"#;

	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_call() {
	let tester = EthTester::default();
	tester.client.set_execution_result(Executed {
		gas: U256::zero(),
		gas_used: U256::from(0xff30),
		refunded: U256::from(0x5),
		cumulative_gas_used: U256::zero(),
		logs: vec![],
		contracts_created: vec![],
		output: vec![0x12, 0x34, 0xff],
		trace: None,
	});

	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_call",
		"params": [{
			"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
			"to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
			"gas": "0x76c0",
			"gasPrice": "0x9184e72a000",
			"value": "0x9184e72a",
			"data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"
		},
		"latest"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0x1234ff","id":1}"#;

	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_call_default_block() {
	let tester = EthTester::default();
	tester.client.set_execution_result(Executed {
		gas: U256::zero(),
		gas_used: U256::from(0xff30),
		refunded: U256::from(0x5),
		cumulative_gas_used: U256::zero(),
		logs: vec![],
		contracts_created: vec![],
		output: vec![0x12, 0x34, 0xff],
		trace: None,
	});

	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_call",
		"params": [{
			"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
			"to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
			"gas": "0x76c0",
			"gasPrice": "0x9184e72a000",
			"value": "0x9184e72a",
			"data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"
		}],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0x1234ff","id":1}"#;

	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_estimate_gas() {
	let tester = EthTester::default();
	tester.client.set_execution_result(Executed {
		gas: U256::zero(),
		gas_used: U256::from(0xff30),
		refunded: U256::from(0x5),
		cumulative_gas_used: U256::zero(),
		logs: vec![],
		contracts_created: vec![],
		output: vec![0x12, 0x34, 0xff],
		trace: None,
	});

	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_estimateGas",
		"params": [{
			"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
			"to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
			"gas": "0x76c0",
			"gasPrice": "0x9184e72a000",
			"value": "0x9184e72a",
			"data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"
		},
		"latest"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0xff35","id":1}"#;

	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_estimate_gas_default_block() {
	let tester = EthTester::default();
	tester.client.set_execution_result(Executed {
		gas: U256::zero(),
		gas_used: U256::from(0xff30),
		refunded: U256::from(0x5),
		cumulative_gas_used: U256::zero(),
		logs: vec![],
		contracts_created: vec![],
		output: vec![0x12, 0x34, 0xff],
		trace: None,
	});

	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_estimateGas",
		"params": [{
			"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
			"to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
			"gas": "0x76c0",
			"gasPrice": "0x9184e72a000",
			"value": "0x9184e72a",
			"data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"
		}],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":"0xff35","id":1}"#;

	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_send_transaction() {
	let account = TestAccount::new("123");
	let address = account.address();
	let secret = account.secret.clone();

	let tester = EthTester::default();
	tester.accounts_provider.accounts.write().unwrap().insert(address.clone(), account);
	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_sendTransaction",
		"params": [{
			"from": ""#.to_owned() + format!("0x{:?}", address).as_ref() + r#"",
			"to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
			"gas": "0x76c0",
			"gasPrice": "0x9184e72a000",
			"value": "0x9184e72a"
		}],
		"id": 1
	}"#;

	let t = Transaction {
		nonce: U256::zero(),
		gas_price: U256::from(0x9184e72a000u64),
		gas: U256::from(0x76c0),
		action: Action::Call(Address::from_str("d46e8dd67c5d32be8058bb8eb970870f07244567").unwrap()),
		value: U256::from(0x9184e72au64),
		data: vec![]
	}.sign(&secret);

	let response = r#"{"jsonrpc":"2.0","result":""#.to_owned() + format!("0x{:?}", t.hash()).as_ref() + r#"","id":1}"#;

	assert_eq!(tester.io.handle_request(request.as_ref()), Some(response));

	tester.miner.last_nonces.write().unwrap().insert(address.clone(), U256::zero());

	let t = Transaction {
		nonce: U256::one(),
		gas_price: U256::from(0x9184e72a000u64),
		gas: U256::from(0x76c0),
		action: Action::Call(Address::from_str("d46e8dd67c5d32be8058bb8eb970870f07244567").unwrap()),
		value: U256::from(0x9184e72au64),
		data: vec![]
	}.sign(&secret);

	let response = r#"{"jsonrpc":"2.0","result":""#.to_owned() + format!("0x{:?}", t.hash()).as_ref() + r#"","id":1}"#;

	assert_eq!(tester.io.handle_request(request.as_ref()), Some(response));
}

#[test]
#[ignore]
fn rpc_eth_send_raw_transaction() {
	unimplemented!()
}

#[test]
#[ignore]
fn rpc_eth_sign() {
	unimplemented!()
}

#[test]
fn rpc_eth_transaction_receipt() {
	let receipt = LocalizedReceipt {
		transaction_hash: H256::zero(),
		transaction_index: 0,
		block_hash: H256::from_str("ed76641c68a1c641aee09a94b3b471f4dc0316efe5ac19cf488e2674cf8d05b5").unwrap(),
		block_number: 0x4510c,
		cumulative_gas_used: U256::from(0x20),
		gas_used: U256::from(0x10),
		contract_address: None,
		logs: vec![LocalizedLogEntry {
			entry: LogEntry {
				address: Address::from_str("33990122638b9132ca29c723bdf037f1a891a70c").unwrap(),
				topics: vec![
					H256::from_str("a6697e974e6a320f454390be03f74955e8978f1a6971ea6730542e37b66179bc").unwrap(),
					H256::from_str("4861736852656700000000000000000000000000000000000000000000000000").unwrap()
				],
				data: vec![],
			},
			block_hash: H256::from_str("ed76641c68a1c641aee09a94b3b471f4dc0316efe5ac19cf488e2674cf8d05b5").unwrap(),
			block_number: 0x4510c,
			transaction_hash: H256::new(),
			transaction_index: 0,
			log_index: 1,
		}]
	};

	let hash = H256::from_str("b903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238").unwrap();
	let tester = EthTester::default();
	tester.client.set_transaction_receipt(TransactionId::Hash(hash), receipt);

	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_getTransactionReceipt",
		"params": ["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":{"blockHash":"0xed76641c68a1c641aee09a94b3b471f4dc0316efe5ac19cf488e2674cf8d05b5","blockNumber":"0x04510c","contractAddress":null,"cumulativeGasUsed":"0x20","gasUsed":"0x10","logs":[{"address":"0x33990122638b9132ca29c723bdf037f1a891a70c","blockHash":"0xed76641c68a1c641aee09a94b3b471f4dc0316efe5ac19cf488e2674cf8d05b5","blockNumber":"0x04510c","data":"0x","logIndex":"0x01","topics":["0xa6697e974e6a320f454390be03f74955e8978f1a6971ea6730542e37b66179bc","0x4861736852656700000000000000000000000000000000000000000000000000"],"transactionHash":"0x0000000000000000000000000000000000000000000000000000000000000000","transactionIndex":"0x00"}],"transactionHash":"0x0000000000000000000000000000000000000000000000000000000000000000","transactionIndex":"0x00"},"id":1}"#;

	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_transaction_receipt_null() {
	let tester = EthTester::default();

	let request = r#"{
		"jsonrpc": "2.0",
		"method": "eth_getTransactionReceipt",
		"params": ["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],
		"id": 1
	}"#;
	let response = r#"{"jsonrpc":"2.0","result":null,"id":1}"#;

	assert_eq!(tester.io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_compilers() {
	let request = r#"{"jsonrpc": "2.0", "method": "eth_getCompilers", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","result":[],"id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_compile_lll() {
	let request = r#"{"jsonrpc": "2.0", "method": "eth_compileLLL", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","error":{"code":-32603,"message":"Internal error","data":null},"id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_compile_solidity() {
	let request = r#"{"jsonrpc": "2.0", "method": "eth_compileSolidity", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","error":{"code":-32603,"message":"Internal error","data":null},"id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn rpc_eth_compile_serpent() {
	let request = r#"{"jsonrpc": "2.0", "method": "eth_compileSerpent", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","error":{"code":-32603,"message":"Internal error","data":null},"id":1}"#;

	assert_eq!(EthTester::default().io.handle_request(request), Some(response.to_owned()));
}

#[test]
fn returns_no_work_if_cant_mine() {
	let eth_tester = EthTester::default();
	eth_tester.client.set_queue_size(10);

	let request = r#"{"jsonrpc": "2.0", "method": "eth_getWork", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","result":["","",""],"id":1}"#;

	assert_eq!(eth_tester.io.handle_request(request), Some(response.to_owned()));
}

#[ignore]
// enable once TestMinerService supports the mining API.
#[test]
fn returns_error_if_can_mine_and_no_closed_block() {
	use ethsync::{SyncState};

	let eth_tester = EthTester::default();
	eth_tester.sync.status.write().unwrap().state = SyncState::Idle;

	let request = r#"{"jsonrpc": "2.0", "method": "eth_getWork", "params": [], "id": 1}"#;
	let response = r#"{"jsonrpc":"2.0","error":{"code":-32603,"message":"Internal error","data":null},"id":1}"#;

	assert_eq!(eth_tester.io.handle_request(request), Some(response.to_owned()));
}