Merge pull request #2 from hammeWang/master

add tests about verifying mixhash computation

Author: sorpaas

Cargo.toml

@@ -13,6 +13,9 @@ rlp = { version = "0.4", default-features = false }
 byteorder = { version = "1", default-features = false }
 sha3 = { version = "0.8", default-features = false }
 
+[dev-dependencies]
+hex-literal = "0.2.1"
+
 [features]
 default = ["std"]
 std = [

src/lib.rs

@@ -308,3 +308,20 @@ pub fn get_seedhash(epoch: usize) -> H256 {
     }
     H256::from_slice(s.as_ref())
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::{LightDAG, EthereumPatch};
+    use hex_literal::*;
+    use ethereum_types::{H256, H64};
+
+    #[test]
+    fn hashimoto_should_work() {
+        type DAG = LightDAG<EthereumPatch>;
+        let light_dag = DAG::new(0x8947a9.into());
+        // bare_hash of block#8996777 on ethereum mainnet
+        let partial_header_hash = H256::from(hex!("3c2e6623b1de8862a927eeeef2b6b25dea6e1d9dad88dca3c239be3959dc384a"));
+        let mixh = light_dag.hashimoto(partial_header_hash, H64::from(hex!("a5d3d0ccc8bb8a29"))).0;
+        assert_eq!(mixh, H256::from(hex!("543bc0769f7d5df30e7633f4a01552c2cee7baace8a6da37fddaa19e49e81209")));
+    }
+}