// Copyright 2020 Parity Technologies (UK) Ltd.
// This file is part of Polkadot.

// Polkadot 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.

// Polkadot 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 Polkadot.  If not, see <http://www.gnu.org/licenses/>.

use polkadot_test_service::*;
use service::TaskExecutor;
use sp_keyring::Sr25519Keyring::{Alice, Bob};

#[substrate_test_utils::test]
async fn call_function_actually_work(task_executor: TaskExecutor) {
	let alice = run_test_node(task_executor, Alice, || {}, Vec::new());

	let function = polkadot_test_runtime::Call::Balances(pallet_balances::Call::transfer(
		Default::default(),
		1,
	));
	let output = alice.call_function(function, Bob).await.unwrap();

	let res = output.result.expect("return value expected");
	let json = serde_json::from_str::<serde_json::Value>(res.as_str()).expect("valid JSON");
	let object = json.as_object().expect("JSON is an object");
	assert!(object.contains_key("jsonrpc"), "key jsonrpc exists");
	let result = object.get("result");
	let result = result.expect("key result exists");
	assert_eq!(
		result.as_str().map(|x| x.starts_with("0x")),
		Some(true),
		"result starts with 0x"
	);

	alice.task_manager.clean_shutdown().await;
}
