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check_known now takes total_difficulty into consideration #3298
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// 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. | ||
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mod chain_test_helper; | ||
use self::chain_test_helper::{clean_output_dir, init_chain, mine_chain}; | ||
use chain::ErrorKind; | ||
use chain::Tip; | ||
use grin_chain as chain; | ||
use grin_core::core::hash::Hashed; | ||
use grin_util as util; | ||
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#[test] | ||
fn check_known() { | ||
let chain_dir = ".grin.check_known"; | ||
util::init_test_logger(); | ||
clean_output_dir(chain_dir); | ||
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// mine some blocks | ||
let (latest, genesis) = { | ||
let chain = mine_chain(chain_dir, 3); | ||
let genesis = chain | ||
.get_block(&chain.get_header_by_height(0).unwrap().hash()) | ||
.unwrap(); | ||
let head = chain.head().unwrap(); | ||
let latest = chain.get_block(&head.last_block_h).unwrap(); | ||
(latest, genesis) | ||
}; | ||
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// attempt to reprocess latest block | ||
{ | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. why do we need a lexical scope here and below? There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. We cannot call |
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let chain = init_chain(chain_dir, genesis.clone()); | ||
let res = chain.process_block(latest.clone(), chain::Options::NONE); | ||
assert_eq!( | ||
res.unwrap_err().kind(), | ||
ErrorKind::Unfit("already known in head".to_string()).into() | ||
); | ||
} | ||
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// attempt to reprocess genesis block | ||
{ | ||
let chain = init_chain(chain_dir, genesis.clone()); | ||
let res = chain.process_block(genesis.clone(), chain::Options::NONE); | ||
assert_eq!( | ||
res.unwrap_err().kind(), | ||
ErrorKind::Unfit("already known in store".to_string()).into() | ||
); | ||
} | ||
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// reset chain head to earlier state | ||
{ | ||
let chain = init_chain(chain_dir, genesis.clone()); | ||
let store = chain.store(); | ||
let batch = store.batch().unwrap(); | ||
let head_header = chain.head_header().unwrap(); | ||
let prev = batch.get_previous_header(&head_header).unwrap(); | ||
batch.save_body_head(&Tip::from_header(&prev)).unwrap(); | ||
batch.commit().unwrap(); | ||
} | ||
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// reprocess latest block and check the updated head | ||
{ | ||
let chain = init_chain(chain_dir, genesis.clone()); | ||
let head = chain | ||
.process_block(latest.clone(), chain::Options::NONE) | ||
.unwrap(); | ||
assert_eq!(head, Some(Tip::from_header(&latest.header))); | ||
} | ||
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clean_output_dir(chain_dir); | ||
} |
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for my education - why do we need a lexical scope here?
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See above.