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Merge pull request #387 from ethcore/coverage-effort

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Ethash unit tests final
This commit is contained in:
Gav Wood 2016-02-09 13:59:48 +01:00
commit 1ae4da46b3
1 changed files with 54 additions and 0 deletions
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54
ethcore/src/ethereum/ethash.rs
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@ -175,6 +175,11 @@ impl Engine for Ethash {
}
fn verify_block_family(&self, header: &Header, parent: &Header, _block: Option<&[u8]>) -> result::Result<(), Error> {
// we should not calculate difficulty for genesis blocks
if header.number() == 0 {
return Err(From::from(BlockError::RidiculousNumber(OutOfBounds { min: Some(1), max: None, found: header.number() })));
}
// Check difficulty is correct given the two timestamps.
let expected_difficulty = self.calculate_difficuty(header, parent);
if header.difficulty != expected_difficulty {
@ -439,7 +444,56 @@ mod tests {
Err(_) => { panic!("should be invalid proof-of-work fail (got {:?})", verify_result); },
_ => { panic!("Should be error, got Ok"); },
}
}
#[test]
fn can_verify_block_family_genesis_fail() {
let engine = Ethash::new_test(new_morden());
let header: Header = Header::default();
let parent_header: Header = Header::default();
let verify_result = engine.verify_block_family(&header, &parent_header, None);
match verify_result {
Err(Error::Block(BlockError::RidiculousNumber(_))) => {},
Err(_) => { panic!("should be invalid block number fail (got {:?})", verify_result); },
_ => { panic!("Should be error, got Ok"); },
}
}
#[test]
fn can_verify_block_family_difficulty_fail() {
let engine = Ethash::new_test(new_morden());
let mut header: Header = Header::default();
header.set_number(2);
let mut parent_header: Header = Header::default();
parent_header.set_number(1);
let verify_result = engine.verify_block_family(&header, &parent_header, None);
match verify_result {
Err(Error::Block(BlockError::InvalidDifficulty(_))) => {},
Err(_) => { panic!("should be invalid difficulty fail (got {:?})", verify_result); },
_ => { panic!("Should be error, got Ok"); },
}
}
#[test]
fn can_verify_block_family_gas_fail() {
let engine = Ethash::new_test(new_morden());
let mut header: Header = Header::default();
header.set_number(2);
header.set_difficulty(U256::from_str("0000000000000000000000000000000000000000000000000000000000020000").unwrap());
let mut parent_header: Header = Header::default();
parent_header.set_number(1);
let verify_result = engine.verify_block_family(&header, &parent_header, None);
match verify_result {
Err(Error::Block(BlockError::InvalidGasLimit(_))) => {},
Err(_) => { panic!("should be invalid difficulty fail (got {:?})", verify_result); },
_ => { panic!("Should be error, got Ok"); },
}
}
// TODO: difficulty test