mocking for http tests

Signed-off-by: Sally MacFarlane <[email protected]>

Author: macfarla

ethereum/api/src/test/java/org/hyperledger/besu/ethereum/api/jsonrpc/JsonRpcHttpServiceLoginTest.java

@@ -18,9 +18,11 @@
 import static java.util.concurrent.TimeUnit.MINUTES;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.util.Lists.list;
+import static org.mockito.Mockito.lenient;
 import static org.mockito.Mockito.mock;
 
 import org.hyperledger.besu.config.StubGenesisConfigOptions;
+import org.hyperledger.besu.datatypes.Hash;
 import org.hyperledger.besu.ethereum.ProtocolContext;
 import org.hyperledger.besu.ethereum.api.ApiConfiguration;
 import org.hyperledger.besu.ethereum.api.graphql.GraphQLConfiguration;
@@ -37,6 +39,8 @@
 import org.hyperledger.besu.ethereum.api.query.BlockchainQueries;
 import org.hyperledger.besu.ethereum.blockcreation.PoWMiningCoordinator;
 import org.hyperledger.besu.ethereum.chain.BadBlockManager;
+import org.hyperledger.besu.ethereum.chain.Blockchain;
+import org.hyperledger.besu.ethereum.core.Block;
 import org.hyperledger.besu.ethereum.core.MiningConfiguration;
 import org.hyperledger.besu.ethereum.core.Synchronizer;
 import org.hyperledger.besu.ethereum.eth.EthProtocol;
@@ -131,6 +135,13 @@ public static void initServerAndClient() throws Exception {
     final StubGenesisConfigOptions genesisConfigOptions =
         new StubGenesisConfigOptions().constantinopleBlock(0).chainId(CHAIN_ID);
 
+    // mocks so that genesis hash is populated
+    Blockchain blockchain = mock(Blockchain.class);
+    Block block = mock(Block.class);
+    lenient().when(blockchainQueries.getBlockchain()).thenReturn(blockchain);
+    lenient().when(blockchain.getGenesisBlock()).thenReturn(block);
+    lenient().when(block.getHash()).thenReturn(Hash.EMPTY);
+
     rpcMethods =
         new JsonRpcMethodsFactory()
             .methods(