Merge pull request #382 from ethcore/coverage-effort

Coverage effort [in progress]

ethcore/src/ethereum/ethash.rs

@@ -23,8 +23,6 @@ use spec::*;
 use engine::*;
 use evm::Schedule;
 use evm::Factory;
-#[cfg(test)]
-use tests::helpers::*;
 
 /// Engine using Ethash proof-of-work consensus algorithm, suitable for Ethereum
 /// mainnet chains in the Olympic, Frontier and Homestead eras.
@@ -49,6 +47,17 @@ impl Ethash {
 		})
 	}
 
+	#[cfg(test)]
+	fn new_test(spec: Spec) -> Ethash {
+		Ethash {
+			spec: spec,
+			pow: EthashManager::new(),
+			factory: Factory::default(),
+			u64_params: RwLock::new(HashMap::new()),
+			u256_params: RwLock::new(HashMap::new())
+		}
+	}
+
 	fn u64_param(&self, name: &str) -> u64 {
 		*self.u64_params.write().unwrap().entry(name.to_owned()).or_insert_with(||
 			self.spec().engine_params.get(name).map_or(0u64, |a| decode(&a)))
@@ -123,6 +132,11 @@ impl Engine for Ethash {
 
 	fn verify_block_basic(&self, header: &Header, _block: Option<&[u8]>) -> result::Result<(), Error> {
 		// check the seal fields.
+		if header.seal.len() != self.seal_fields() {
+			return Err(From::from(BlockError::InvalidSealArity(
+				Mismatch { expected: self.seal_fields(), found: header.seal.len() }
+			)));
+		}
 		try!(UntrustedRlp::new(&header.seal[0]).as_val::<H256>());
 		try!(UntrustedRlp::new(&header.seal[1]).as_val::<H64>());
 
@@ -143,6 +157,11 @@ impl Engine for Ethash {
 	}
 
 	fn verify_block_unordered(&self, header: &Header, _block: Option<&[u8]>) -> result::Result<(), Error> {
+		if header.seal.len() != self.seal_fields() {
+			return Err(From::from(BlockError::InvalidSealArity(
+				Mismatch { expected: self.seal_fields(), found: header.seal.len() }
+			)));
+		}
 		let result = self.pow.compute_light(header.number as u64, &Ethash::to_ethash(header.bare_hash()), header.nonce().low_u64());
 		let mix = Ethash::from_ethash(result.mix_hash);
 		let difficulty = Ethash::boundary_to_difficulty(&Ethash::from_ethash(result.value));
@@ -242,9 +261,19 @@ impl Header {
 	}
 }
 
-#[test]
+#[cfg(test)]
-fn on_close_block() {
+mod tests {
+	extern crate ethash;
+
+	use common::*;
+	use block::*;
+	use engine::*;
+	use tests::helpers::*;
 	use super::*;
+	use super::super::new_morden;
+
+	#[test]
+	fn on_close_block() {
 		let engine = new_morden().to_engine().unwrap();
 		let genesis_header = engine.spec().genesis_header();
 		let mut db_result = get_temp_journal_db();
@@ -254,11 +283,10 @@ fn on_close_block() {
 		let b = OpenBlock::new(engine.deref(), db, &genesis_header, &last_hashes, Address::zero(), vec![]);
 		let b = b.close();
 		assert_eq!(b.state().balance(&Address::zero()), U256::from_str("4563918244f40000").unwrap());
-}
+	}
 
-#[test]
+	#[test]
-fn on_close_block_with_uncle() {
+	fn on_close_block_with_uncle() {
-	use super::*;
 		let engine = new_morden().to_engine().unwrap();
 		let genesis_header = engine.spec().genesis_header();
 		let mut db_result = get_temp_journal_db();
@@ -274,6 +302,146 @@ fn on_close_block_with_uncle() {
 		let b = b.close();
 		assert_eq!(b.state().balance(&Address::zero()), U256::from_str("478eae0e571ba000").unwrap());
 		assert_eq!(b.state().balance(&uncle_author), U256::from_str("3cb71f51fc558000").unwrap());
+	}
+
+	#[test]
+	fn has_valid_metadata() {
+		let engine = Ethash::new_boxed(new_morden());
+		assert!(!engine.name().is_empty());
+		assert!(engine.version().major >= 1);
+	}
+
+	#[test]
+	fn can_return_params() {
+		let engine = Ethash::new_test(new_morden());
+		assert!(engine.u64_param("durationLimit") > 0);
+		assert!(engine.u256_param("minimumDifficulty") > U256::zero());
+	}
+
+	#[test]
+	fn can_return_factory() {
+		let engine = Ethash::new_test(new_morden());
+		engine.vm_factory();
+	}
+
+	#[test]
+	fn can_return_schedule() {
+		let engine = Ethash::new_test(new_morden());
+		let schedule = engine.schedule(&EnvInfo {
+			number: 10000000,
+			author: x!(0),
+			timestamp: 0,
+			difficulty: x!(0),
+			last_hashes: vec![],
+			gas_used: x!(0),
+			gas_limit: x!(0)
+		});
+
+		assert!(schedule.stack_limit > 0);
+
+		let schedule = engine.schedule(&EnvInfo {
+			number: 100,
+			author: x!(0),
+			timestamp: 0,
+			difficulty: x!(0),
+			last_hashes: vec![],
+			gas_used: x!(0),
+			gas_limit: x!(0)
+		});
+
+		assert!(!schedule.have_delegate_call);
+	}
+
+	#[test]
+	fn can_do_seal_verification_fail() {
+		let engine = Ethash::new_test(new_morden());
+		let header: Header = Header::default();
+
+		let verify_result = engine.verify_block_basic(&header, None);
+
+		match verify_result {
+			Err(Error::Block(BlockError::InvalidSealArity(_))) => {},
+			Err(_) => { panic!("should be block seal-arity mismatch error (got {:?})", verify_result); },
+			_ => { panic!("Should be error, got Ok"); },
+		}
+	}
+
+	#[test]
+	fn can_do_difficulty_verification_fail() {
+		let engine = Ethash::new_test(new_morden());
+		let mut header: Header = Header::default();
+		header.set_seal(vec![rlp::encode(&H256::zero()).to_vec(), rlp::encode(&H64::zero()).to_vec()]);
+
+		let verify_result = engine.verify_block_basic(&header, None);
+
+		match verify_result {
+			Err(Error::Block(BlockError::DifficultyOutOfBounds(_))) => {},
+			Err(_) => { panic!("should be block difficulty error (got {:?})", verify_result); },
+			_ => { panic!("Should be error, got Ok"); },
+		}
+	}
+
+	#[test]
+	fn can_do_proof_of_work_verification_fail() {
+		let engine = Ethash::new_test(new_morden());
+		let mut header: Header = Header::default();
+		header.set_seal(vec![rlp::encode(&H256::zero()).to_vec(), rlp::encode(&H64::zero()).to_vec()]);
+		header.set_difficulty(U256::from_str("ffffffffffffffffffffffffffffffffffffffffffffaaaaaaaaaaaaaaaaaaaa").unwrap());
+
+		let verify_result = engine.verify_block_basic(&header, None);
+
+		match verify_result {
+			Err(Error::Block(BlockError::InvalidProofOfWork(_))) => {},
+			Err(_) => { panic!("should be invalid proof of work error (got {:?})", verify_result); },
+			_ => { panic!("Should be error, got Ok"); },
+		}
+	}
+
+	#[test]
+	fn can_do_seal_unordered_verification_fail() {
+		let engine = Ethash::new_test(new_morden());
+		let header: Header = Header::default();
+
+		let verify_result = engine.verify_block_unordered(&header, None);
+
+		match verify_result {
+			Err(Error::Block(BlockError::InvalidSealArity(_))) => {},
+			Err(_) => { panic!("should be block seal-arity mismatch error (got {:?})", verify_result); },
+			_ => { panic!("Should be error, got Ok"); },
+		}
+	}
+
+	#[test]
+	fn can_do_seal256_verification_fail() {
+		let engine = Ethash::new_test(new_morden());
+		let mut header: Header = Header::default();
+		header.set_seal(vec![rlp::encode(&H256::zero()).to_vec(), rlp::encode(&H64::zero()).to_vec()]);
+		let verify_result = engine.verify_block_unordered(&header, None);
+
+		match verify_result {
+			Err(Error::Block(BlockError::MismatchedH256SealElement(_))) => {},
+			Err(_) => { panic!("should be invalid 256-bit seal fail (got {:?})", verify_result); },
+			_ => { panic!("Should be error, got Ok"); },
+		}
+	}
+
+	#[test]
+	fn can_do_proof_of_work_unordered_verification_fail() {
+		let engine = Ethash::new_test(new_morden());
+		let mut header: Header = Header::default();
+		header.set_seal(vec![rlp::encode(&H256::from("b251bd2e0283d0658f2cadfdc8ca619b5de94eca5742725e2e757dd13ed7503d")).to_vec(), rlp::encode(&H64::zero()).to_vec()]);
+		header.set_difficulty(U256::from_str("ffffffffffffffffffffffffffffffffffffffffffffaaaaaaaaaaaaaaaaaaaa").unwrap());
+
+		let verify_result = engine.verify_block_unordered(&header, None);
+
+		match verify_result {
+			Err(Error::Block(BlockError::InvalidProofOfWork(_))) => {},
+			Err(_) => { panic!("should be invalid proof-of-work fail (got {:?})", verify_result); },
+			_ => { panic!("Should be error, got Ok"); },
+		}
+
+	}
+
+	// TODO: difficulty test
 }
 
-// TODO: difficulty test

ethcore/src/evm/factory.rs

@@ -159,11 +159,13 @@ macro_rules! evm_test_ignore(
 		#[test]
 		#[ignore]
 		#[cfg(feature = "jit")]
+		#[cfg(feature = "ignored-tests")]
 		fn $name_jit() {
 			$name_test(Factory::new(VMType::Jit));
 		}
 		#[test]
 		#[ignore]
+		#[cfg(feature = "ignored-tests")]
 		fn $name_int() {
 			$name_test(Factory::new(VMType::Interpreter));
 		}

ethcore/src/executive.rs

@@ -360,6 +360,7 @@ impl<'a> Executive<'a> {
 }
 
 #[cfg(test)]
+#[allow(dead_code)]
 mod tests {
 	use super::*;
 	use common::*;
@@ -599,6 +600,7 @@ mod tests {
 	}
 
 	// test is incorrect, mk
+	// TODO: fix (preferred) or remove
 	evm_test_ignore!{test_aba_calls: test_aba_calls_jit, test_aba_calls_int}
 	fn test_aba_calls(factory: Factory) {
 		// 60 00 - push 0
@@ -659,6 +661,7 @@ mod tests {
 	}
 
 	// test is incorrect, mk
+	// TODO: fix (preferred) or remove
 	evm_test_ignore!{test_recursive_bomb1: test_recursive_bomb1_jit, test_recursive_bomb1_int}
 	fn test_recursive_bomb1(factory: Factory) {
 		// 60 01 - push 1
@@ -704,6 +707,7 @@ mod tests {
 	}
 
 	// test is incorrect, mk
+	// TODO: fix (preferred) or remove
 	evm_test_ignore!{test_transact_simple: test_transact_simple_jit, test_transact_simple_int}
 	fn test_transact_simple(factory: Factory) {
 		let keypair = KeyPair::create().unwrap();
@@ -902,5 +906,4 @@ mod tests {
 			}
 		}
 	}
-
 }

ethcore/src/json_tests/mod.rs

@@ -20,7 +20,6 @@ mod test_common;
 mod transaction;
 mod executive;
 mod state;
-mod client;
 mod chain;
 mod homestead_state;
 mod homestead_chain;

ethcore/src/tests/client.rs

@@ -15,8 +15,8 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use client::{BlockChainClient,Client};
-use super::test_common::*;
 use tests::helpers::*;
+use common::*;
 
 #[test]
 fn created() {

ethcore/src/tests/helpers.rs

@@ -14,7 +14,6 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-#[cfg(feature = "json-tests")]
 use client::{BlockChainClient, Client};
 use std::env;
 use common::*;
@@ -134,7 +133,6 @@ pub fn create_test_block_with_data(header: &Header, transactions: &[&SignedTrans
 	rlp.out()
 }
 
-#[cfg(feature = "json-tests")]
 pub fn generate_dummy_client(block_number: u32) -> GuardedTempResult<Arc<Client>> {
 	let dir = RandomTempPath::new();
 
@@ -174,7 +172,6 @@ pub fn generate_dummy_client(block_number: u32) -> GuardedTempResult<Arc<Client>
 	}
 }
 
-#[cfg(feature = "json-tests")]
 pub fn get_test_client_with_blocks(blocks: Vec<Bytes>) -> GuardedTempResult<Arc<Client>> {
 	let dir = RandomTempPath::new();
 	let client = Client::new(get_test_spec(), dir.as_path(), IoChannel::disconnected()).unwrap();
@@ -271,7 +268,6 @@ pub fn get_good_dummy_block() -> Bytes {
 	create_test_block(&block_header)
 }
 
-#[cfg(feature = "json-tests")]
 pub fn get_bad_state_dummy_block() -> Bytes {
 	let mut block_header = Header::new();
 	let test_spec = get_test_spec();

ethcore/src/tests/mod.rs

@@ -15,3 +15,4 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 pub mod helpers;
+mod client;