text: // Copyright 2020 The Grin Developers
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  use self::core::genesis;
  use grin_core as core;
  use grin_util as util;
  
  mod chain_test_helper;
  
  use self::chain_test_helper::{clean_output_dir, init_chain, mine_chain};
  
  #[test]
  fn data_files() {
  	util::init_test_logger();
  
  	let chain_dir = ".grin_df";
  	clean_output_dir(chain_dir);
  
  	// Mine a few blocks on a new chain.
  	{
  		let chain = mine_chain(chain_dir, 4);
  		chain.validate(false).unwrap();
  		assert_eq!(chain.head().unwrap().height, 3);
  	};
  
  	// Now reload the chain from existing data files and check it is valid.
  	{
  		let chain = init_chain(chain_dir, genesis::genesis_dev());
  		chain.validate(false).unwrap();
  		assert_eq!(chain.head().unwrap().height, 3);
  	}
  
  	// Cleanup chain directory
  	clean_output_dir(chain_dir);
  }
  