Smart contract acceptance test (#296)

* Upgrade Web3j to 3.6.0

* Correcting ErrorProne exclusion regex

* Deploying the simple storage contract

* Web3j to 4.0.1

* Verifying the transaction receipt

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/dsl/condition/eth/EthGetTransactionReceiptEquals.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018 ConsenSys AG.
+ *
+ * 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.
+ */
+package tech.pegasys.pantheon.tests.acceptance.dsl.condition.eth;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import tech.pegasys.pantheon.tests.acceptance.dsl.condition.Condition;
+import tech.pegasys.pantheon.tests.acceptance.dsl.node.Node;
+import tech.pegasys.pantheon.tests.acceptance.dsl.transaction.eth.EthGetTransactionReceiptTransaction;
+
+import java.util.Optional;
+
+import org.web3j.protocol.core.methods.response.TransactionReceipt;
+
+public class EthGetTransactionReceiptEquals implements Condition {
+
+  private final EthGetTransactionReceiptTransaction transaction;
+  private final TransactionReceipt expectedReceipt;
+
+  public EthGetTransactionReceiptEquals(
+      final EthGetTransactionReceiptTransaction transaction,
+      final TransactionReceipt expectedReceipt) {
+    this.transaction = transaction;
+    this.expectedReceipt = expectedReceipt;
+  }
+
+  @Override
+  public void verify(final Node node) {
+    final Optional<TransactionReceipt> response = node.execute(transaction);
+
+    assertThat(response.isPresent()).isTrue();
+    assertThat(response.get()).isEqualTo(expectedReceipt);
+  }
+}

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/dsl/jsonrpc/Eth.java

@@ -14,6 +14,7 @@ package tech.pegasys.pantheon.tests.acceptance.dsl.jsonrpc;
 
 import tech.pegasys.pantheon.ethereum.core.Hash;
 import tech.pegasys.pantheon.tests.acceptance.dsl.condition.Condition;
+import tech.pegasys.pantheon.tests.acceptance.dsl.condition.eth.EthGetTransactionReceiptEquals;
 import tech.pegasys.pantheon.tests.acceptance.dsl.condition.eth.ExpectEthAccountsException;
 import tech.pegasys.pantheon.tests.acceptance.dsl.condition.eth.ExpectEthGetTransactionReceiptIsAbsent;
 import tech.pegasys.pantheon.tests.acceptance.dsl.condition.eth.ExpectEthGetWorkException;
@@ -21,6 +22,8 @@ import tech.pegasys.pantheon.tests.acceptance.dsl.condition.eth.ExpectSuccessful
 import tech.pegasys.pantheon.tests.acceptance.dsl.condition.eth.SanityCheckEthGetWorkValues;
 import tech.pegasys.pantheon.tests.acceptance.dsl.transaction.eth.EthTransactions;
 
+import org.web3j.protocol.core.methods.response.TransactionReceipt;
+
 public class Eth {
 
   private final EthTransactions transactions;
@@ -50,4 +53,10 @@ public class Eth {
     return new ExpectEthGetTransactionReceiptIsAbsent(
         transactions.getTransactionReceipt(transactionHash));
   }
+
+  public Condition expectTransactionReceipt(
+      final String transactionHash, final TransactionReceipt receipt) {
+    return new EthGetTransactionReceiptEquals(
+        transactions.getTransactionReceipt(transactionHash), receipt);
+  }
 }

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/dsl/transaction/DeploySmartContractTransaction.java

@@ -30,7 +30,7 @@ public class DeploySmartContractTransaction<T extends Contract> implements Trans
 
   private final Class<T> clazz;
 
-  public DeploySmartContractTransaction(final Class<T> clazz) {
+  DeploySmartContractTransaction(final Class<T> clazz) {
     this.clazz = clazz;
   }
 

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/web3j/DeploySmartContractAcceptanceTest.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2018 ConsenSys AG.
+ *
+ * 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.
+ */
+package tech.pegasys.pantheon.tests.web3j;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import tech.pegasys.pantheon.tests.acceptance.dsl.AcceptanceTestBase;
+import tech.pegasys.pantheon.tests.acceptance.dsl.node.PantheonNode;
+import tech.pegasys.pantheon.tests.web3j.generated.SimpleStorage;
+
+import java.util.Optional;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.web3j.protocol.core.methods.response.TransactionReceipt;
+
+public class DeploySmartContractAcceptanceTest extends AcceptanceTestBase {
+
+  private PantheonNode minerNode;
+
+  @Before
+  public void setUp() throws Exception {
+    minerNode = pantheon.createMinerNode("miner-node");
+    cluster.start(minerNode);
+  }
+
+  @Test
+  public void deployContractReceiptMustMatchEthGetTransactionReceipt() {
+    final SimpleStorage contract =
+        minerNode.execute(transactions.createSmartContract(SimpleStorage.class));
+    assertThat(contract).isNotNull();
+
+    final Optional<TransactionReceipt> receipt = contract.getTransactionReceipt();
+    assertThat(receipt).isNotNull();
+    assertThat(receipt.isPresent()).isTrue();
+
+    final TransactionReceipt transactionReceipt = receipt.get();
+    assertThat(transactionReceipt.getTransactionHash()).isNotNull();
+
+    // Contract transaction has no 'to' address or contract address
+    assertThat(transactionReceipt.getTo()).isNull();
+    assertThat(transactionReceipt.getContractAddress()).isNotBlank();
+
+    minerNode.verify(
+        eth.expectTransactionReceipt(transactionReceipt.getTransactionHash(), transactionReceipt));
+  }
+}

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/web3j/EventEmitter.sol

@@ -10,11 +10,12 @@
  * 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.
  */
-pragma solidity ^0.4.0;
+pragma solidity >=0.4.0 <0.6.0;
+
 // compile with:
 // solc EventEmitter.sol --bin --abi --optimize --overwrite -o .
 // then create web3j wrappers with:
-// web3j solidity generate ./generated/EventEmitter.bin ./generated/EventEmitter.abi -o ../../../../../ -p tech.pegasys.pantheon.tests.web3j.generated
+// web3j solidity generate -b ./generated/EventEmitter.bin -a ./generated/EventEmitter.abi -o ../../../../../ -p tech.pegasys.pantheon.tests.web3j.generated
 contract EventEmitter {
     address owner;
     event stored(address _to, uint _amount);
@@ -31,11 +32,11 @@ contract EventEmitter {
         _sender = msg.sender;
     }
 
-    function value()  constant public  returns (uint) {
+    function value()  view public  returns (uint) {
         return _value;
     }
 
-    function sender() constant public returns (address) {
+    function sender() view public returns (address) {
         return _sender;
     }
 }

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/web3j/EventEmitterAcceptanceTest.java

@@ -13,6 +13,7 @@
 package tech.pegasys.pantheon.tests.web3j;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 
@@ -24,11 +25,12 @@ import tech.pegasys.pantheon.tests.web3j.generated.EventEmitter.StoredEventRespo
 import java.math.BigInteger;
 import java.util.concurrent.atomic.AtomicBoolean;
 
+import io.reactivex.Flowable;
+import io.reactivex.disposables.Disposable;
 import org.junit.Before;
 import org.junit.Test;
 import org.web3j.protocol.core.methods.request.EthFilter;
 import org.web3j.protocol.core.methods.response.TransactionReceipt;
-import rx.Observable;
 
 /*
  * This class is based around the EventEmitter solidity contract
@@ -48,17 +50,20 @@ public class EventEmitterAcceptanceTest extends AcceptanceTestBase {
     final EventEmitter eventEmitter =
         node.execute(transactions.createSmartContract(EventEmitter.class));
 
-    final Observable<StoredEventResponse> storedEventResponseObservable =
+    final Flowable<StoredEventResponse> storedEventResponseObservable =
-        eventEmitter.storedEventObservable(new EthFilter());
+        eventEmitter.storedEventFlowable(new EthFilter());
 
     final AtomicBoolean subscriptionReceived = new AtomicBoolean(false);
 
+    final Disposable subscription =
         storedEventResponseObservable.subscribe(
             storedEventResponse -> {
               subscriptionReceived.set(true);
               assertEquals(BigInteger.valueOf(12), storedEventResponse._amount);
             });
 
+    assertFalse(subscription.isDisposed());
+
     final TransactionReceipt receipt = eventEmitter.store(BigInteger.valueOf(12)).send();
 
     assertNotNull(receipt);

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/web3j/SimpleStorage.sol

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2018 ConsenSys AG.
+ *
+ * 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.
+ */
+pragma solidity >=0.4.0 <0.6.0;
+
+// compile with:
+// solc SimpleStorage.sol --bin --abi --optimize --overwrite -o .
+// then create web3j wrappers with:
+// web3j solidity generate -b ./generated/SimpleStorage.bin -a ./generated/SimpleStorage.abi -o ../../../../../ -p tech.pegasys.pantheon.tests.web3j.generated
+contract SimpleStorage {
+    uint data;
+
+    function set(uint value) public {
+        data = value;
+    }
+
+    function get() public view returns (uint) {
+        return data;
+    }
+}

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/web3j/generated/EventEmitter.bin

@@ -1 +1 @@
-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

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/web3j/generated/EventEmitter.java

@@ -18,6 +18,7 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 
+import io.reactivex.Flowable;
 import org.web3j.abi.EventEncoder;
 import org.web3j.abi.TypeReference;
 import org.web3j.abi.datatypes.Address;
@@ -34,8 +35,7 @@ import org.web3j.protocol.core.methods.response.Log;
 import org.web3j.protocol.core.methods.response.TransactionReceipt;
 import org.web3j.tx.Contract;
 import org.web3j.tx.TransactionManager;
-import rx.Observable;
+import org.web3j.tx.gas.ContractGasProvider;
-import rx.functions.Func1;
 
 /**
  * Auto generated code.
@@ -46,12 +46,12 @@ import rx.functions.Func1;
  * or the org.web3j.codegen.SolidityFunctionWrapperGenerator in the <a
  * href="https://github.com/web3j/web3j/tree/master/codegen">codegen module</a> to update.
  *
- * <p>Generated with web3j version 3.5.0.
+ * <p>Generated with web3j version 4.0.1.
  */
 @SuppressWarnings("rawtypes")
 public class EventEmitter extends Contract {
   private static final String BINARY =
-      "608060405234801561001057600080fd5b5060008054600160a060020a03191633179055610187806100326000396000f3006080604052600436106100565763ffffffff7c01000000000000000000000000000000000000000000000000000000006000350416633fa4f245811461005b5780636057361d1461008257806367e404ce1461009c575b600080fd5b34801561006757600080fd5b506100706100da565b60408051918252519081900360200190f35b34801561008e57600080fd5b5061009a6004356100e0565b005b3480156100a857600080fd5b506100b161013f565b6040805173ffffffffffffffffffffffffffffffffffffffff9092168252519081900360200190f35b60025490565b604080513381526020810183905281517fc9db20adedc6cf2b5d25252b101ab03e124902a73fcb12b753f3d1aaa2d8f9f5929181900390910190a16002556001805473ffffffffffffffffffffffffffffffffffffffff191633179055565b60015473ffffffffffffffffffffffffffffffffffffffff16905600a165627a7a72305820f958aea7922a9538be4c34980ad3171806aad2d3fedb62682cef2ca4e1f1f3120029";
+      "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";
 
   public static final String FUNC_VALUE = "value";
 
@@ -63,26 +63,44 @@ public class EventEmitter extends Contract {
       new Event(
           "stored",
           Arrays.<TypeReference<?>>asList(
-              new TypeReference<Address>() {}, new TypeReference<Uint256>() {}));
+              new TypeReference<Address>() {}, new TypeReference<Uint256>() {}));;
 
+  @Deprecated
   protected EventEmitter(
-      final String contractAddress,
+      String contractAddress,
-      final Web3j web3j,
+      Web3j web3j,
-      final Credentials credentials,
+      Credentials credentials,
-      final BigInteger gasPrice,
+      BigInteger gasPrice,
-      final BigInteger gasLimit) {
+      BigInteger gasLimit) {
     super(BINARY, contractAddress, web3j, credentials, gasPrice, gasLimit);
   }
 
   protected EventEmitter(
-      final String contractAddress,
+      String contractAddress,
-      final Web3j web3j,
+      Web3j web3j,
-      final TransactionManager transactionManager,
+      Credentials credentials,
-      final BigInteger gasPrice,
+      ContractGasProvider contractGasProvider) {
-      final BigInteger gasLimit) {
+    super(BINARY, contractAddress, web3j, credentials, contractGasProvider);
+  }
+
+  @Deprecated
+  protected EventEmitter(
+      String contractAddress,
+      Web3j web3j,
+      TransactionManager transactionManager,
+      BigInteger gasPrice,
+      BigInteger gasLimit) {
     super(BINARY, contractAddress, web3j, transactionManager, gasPrice, gasLimit);
   }
 
+  protected EventEmitter(
+      String contractAddress,
+      Web3j web3j,
+      TransactionManager transactionManager,
+      ContractGasProvider contractGasProvider) {
+    super(BINARY, contractAddress, web3j, transactionManager, contractGasProvider);
+  }
+
   public RemoteCall<BigInteger> value() {
     final Function function =
         new Function(
@@ -92,7 +110,7 @@ public class EventEmitter extends Contract {
     return executeRemoteCallSingleValueReturn(function, BigInteger.class);
   }
 
-  public RemoteCall<TransactionReceipt> store(final BigInteger _amount) {
+  public RemoteCall<TransactionReceipt> store(BigInteger _amount) {
     final Function function =
         new Function(
             FUNC_STORE,
@@ -110,30 +128,12 @@ public class EventEmitter extends Contract {
     return executeRemoteCallSingleValueReturn(function, String.class);
   }
 
-  public static RemoteCall<EventEmitter> deploy(
+  public List<StoredEventResponse> getStoredEvents(TransactionReceipt transactionReceipt) {
-      final Web3j web3j,
+    List<Contract.EventValuesWithLog> valueList =
-      final Credentials credentials,
-      final BigInteger gasPrice,
-      final BigInteger gasLimit) {
-    return deployRemoteCall(EventEmitter.class, web3j, credentials, gasPrice, gasLimit, BINARY, "");
-  }
-
-  public static RemoteCall<EventEmitter> deploy(
-      final Web3j web3j,
-      final TransactionManager transactionManager,
-      final BigInteger gasPrice,
-      final BigInteger gasLimit) {
-    return deployRemoteCall(
-        EventEmitter.class, web3j, transactionManager, gasPrice, gasLimit, BINARY, "");
-  }
-
-  public List<StoredEventResponse> getStoredEvents(final TransactionReceipt transactionReceipt) {
-    final List<Contract.EventValuesWithLog> valueList =
         extractEventParametersWithLog(STORED_EVENT, transactionReceipt);
-    final ArrayList<StoredEventResponse> responses =
+    ArrayList<StoredEventResponse> responses = new ArrayList<StoredEventResponse>(valueList.size());
-        new ArrayList<StoredEventResponse>(valueList.size());
+    for (Contract.EventValuesWithLog eventValues : valueList) {
-    for (final Contract.EventValuesWithLog eventValues : valueList) {
+      StoredEventResponse typedResponse = new StoredEventResponse();
-      final StoredEventResponse typedResponse = new StoredEventResponse();
       typedResponse.log = eventValues.getLog();
       typedResponse._to = (String) eventValues.getNonIndexedValues().get(0).getValue();
       typedResponse._amount = (BigInteger) eventValues.getNonIndexedValues().get(1).getValue();
@@ -142,16 +142,16 @@ public class EventEmitter extends Contract {
     return responses;
   }
 
-  public Observable<StoredEventResponse> storedEventObservable(final EthFilter filter) {
+  public Flowable<StoredEventResponse> storedEventFlowable(EthFilter filter) {
     return web3j
-        .ethLogObservable(filter)
+        .ethLogFlowable(filter)
         .map(
-            new Func1<Log, StoredEventResponse>() {
+            new io.reactivex.functions.Function<Log, StoredEventResponse>() {
               @Override
-              public StoredEventResponse call(final Log log) {
+              public StoredEventResponse apply(Log log) {
-                final Contract.EventValuesWithLog eventValues =
+                Contract.EventValuesWithLog eventValues =
                     extractEventParametersWithLog(STORED_EVENT, log);
-                final StoredEventResponse typedResponse = new StoredEventResponse();
+                StoredEventResponse typedResponse = new StoredEventResponse();
                 typedResponse.log = log;
                 typedResponse._to = (String) eventValues.getNonIndexedValues().get(0).getValue();
                 typedResponse._amount =
@@ -161,31 +161,77 @@ public class EventEmitter extends Contract {
             });
   }
 
-  public Observable<StoredEventResponse> storedEventObservable(
+  public Flowable<StoredEventResponse> storedEventFlowable(
-      final DefaultBlockParameter startBlock, final DefaultBlockParameter endBlock) {
+      DefaultBlockParameter startBlock, DefaultBlockParameter endBlock) {
-    final EthFilter filter = new EthFilter(startBlock, endBlock, getContractAddress());
+    EthFilter filter = new EthFilter(startBlock, endBlock, getContractAddress());
     filter.addSingleTopic(EventEncoder.encode(STORED_EVENT));
-    return storedEventObservable(filter);
+    return storedEventFlowable(filter);
   }
 
+  @Deprecated
   public static EventEmitter load(
-      final String contractAddress,
+      String contractAddress,
-      final Web3j web3j,
+      Web3j web3j,
-      final Credentials credentials,
+      Credentials credentials,
-      final BigInteger gasPrice,
+      BigInteger gasPrice,
-      final BigInteger gasLimit) {
+      BigInteger gasLimit) {
     return new EventEmitter(contractAddress, web3j, credentials, gasPrice, gasLimit);
   }
 
+  @Deprecated
   public static EventEmitter load(
-      final String contractAddress,
+      String contractAddress,
-      final Web3j web3j,
+      Web3j web3j,
-      final TransactionManager transactionManager,
+      TransactionManager transactionManager,
-      final BigInteger gasPrice,
+      BigInteger gasPrice,
-      final BigInteger gasLimit) {
+      BigInteger gasLimit) {
     return new EventEmitter(contractAddress, web3j, transactionManager, gasPrice, gasLimit);
   }
 
+  public static EventEmitter load(
+      String contractAddress,
+      Web3j web3j,
+      Credentials credentials,
+      ContractGasProvider contractGasProvider) {
+    return new EventEmitter(contractAddress, web3j, credentials, contractGasProvider);
+  }
+
+  public static EventEmitter load(
+      String contractAddress,
+      Web3j web3j,
+      TransactionManager transactionManager,
+      ContractGasProvider contractGasProvider) {
+    return new EventEmitter(contractAddress, web3j, transactionManager, contractGasProvider);
+  }
+
+  public static RemoteCall<EventEmitter> deploy(
+      Web3j web3j, Credentials credentials, ContractGasProvider contractGasProvider) {
+    return deployRemoteCall(
+        EventEmitter.class, web3j, credentials, contractGasProvider, BINARY, "");
+  }
+
+  public static RemoteCall<EventEmitter> deploy(
+      Web3j web3j, TransactionManager transactionManager, ContractGasProvider contractGasProvider) {
+    return deployRemoteCall(
+        EventEmitter.class, web3j, transactionManager, contractGasProvider, BINARY, "");
+  }
+
+  @Deprecated
+  public static RemoteCall<EventEmitter> deploy(
+      Web3j web3j, Credentials credentials, BigInteger gasPrice, BigInteger gasLimit) {
+    return deployRemoteCall(EventEmitter.class, web3j, credentials, gasPrice, gasLimit, BINARY, "");
+  }
+
+  @Deprecated
+  public static RemoteCall<EventEmitter> deploy(
+      Web3j web3j,
+      TransactionManager transactionManager,
+      BigInteger gasPrice,
+      BigInteger gasLimit) {
+    return deployRemoteCall(
+        EventEmitter.class, web3j, transactionManager, gasPrice, gasLimit, BINARY, "");
+  }
+
   public static class StoredEventResponse {
     public Log log;
 

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/web3j/generated/SimpleStorage.abi

@@ -0,0 +1 @@
+[{"constant":false,"inputs":[{"name":"value","type":"uint256"}],"name":"set","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"get","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"}]

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/web3j/generated/SimpleStorage.bin

@@ -0,0 +1 @@
+608060405234801561001057600080fd5b5060d08061001f6000396000f3fe60806040526004361060485763ffffffff7c010000000000000000000000000000000000000000000000000000000060003504166360fe47b18114604d5780636d4ce63c146075575b600080fd5b348015605857600080fd5b50607360048036036020811015606d57600080fd5b50356099565b005b348015608057600080fd5b506087609e565b60408051918252519081900360200190f35b600055565b6000549056fea165627a7a72305820cb1d0935d14b589300b12fcd0ab849a7e9019c81da24d6daa4f6b2f003d1b0180029

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/web3j/generated/SimpleStorage.java

@@ -0,0 +1,169 @@
+/*
+ * Copyright 2018 ConsenSys AG.
+ *
+ * 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.
+ */
+package tech.pegasys.pantheon.tests.web3j.generated;
+
+import java.math.BigInteger;
+import java.util.Arrays;
+import java.util.Collections;
+
+import org.web3j.abi.TypeReference;
+import org.web3j.abi.datatypes.Function;
+import org.web3j.abi.datatypes.Type;
+import org.web3j.abi.datatypes.generated.Uint256;
+import org.web3j.crypto.Credentials;
+import org.web3j.protocol.Web3j;
+import org.web3j.protocol.core.RemoteCall;
+import org.web3j.protocol.core.methods.response.TransactionReceipt;
+import org.web3j.tx.Contract;
+import org.web3j.tx.TransactionManager;
+import org.web3j.tx.gas.ContractGasProvider;
+
+/**
+ * Auto generated code.
+ *
+ * <p><strong>Do not modify!</strong>
+ *
+ * <p>Please use the <a href="https://docs.web3j.io/command_line.html">web3j command line tools</a>,
+ * or the org.web3j.codegen.SolidityFunctionWrapperGenerator in the <a
+ * href="https://github.com/web3j/web3j/tree/master/codegen">codegen module</a> to update.
+ *
+ * <p>Generated with web3j version 4.0.1.
+ */
+@SuppressWarnings("rawtypes")
+public class SimpleStorage extends Contract {
+  private static final String BINARY =
+      "608060405234801561001057600080fd5b5060d08061001f6000396000f3fe60806040526004361060485763ffffffff7c010000000000000000000000000000000000000000000000000000000060003504166360fe47b18114604d5780636d4ce63c146075575b600080fd5b348015605857600080fd5b50607360048036036020811015606d57600080fd5b50356099565b005b348015608057600080fd5b506087609e565b60408051918252519081900360200190f35b600055565b6000549056fea165627a7a72305820cb1d0935d14b589300b12fcd0ab849a7e9019c81da24d6daa4f6b2f003d1b0180029";
+
+  public static final String FUNC_SET = "set";
+
+  public static final String FUNC_GET = "get";
+
+  @Deprecated
+  protected SimpleStorage(
+      String contractAddress,
+      Web3j web3j,
+      Credentials credentials,
+      BigInteger gasPrice,
+      BigInteger gasLimit) {
+    super(BINARY, contractAddress, web3j, credentials, gasPrice, gasLimit);
+  }
+
+  protected SimpleStorage(
+      String contractAddress,
+      Web3j web3j,
+      Credentials credentials,
+      ContractGasProvider contractGasProvider) {
+    super(BINARY, contractAddress, web3j, credentials, contractGasProvider);
+  }
+
+  @Deprecated
+  protected SimpleStorage(
+      String contractAddress,
+      Web3j web3j,
+      TransactionManager transactionManager,
+      BigInteger gasPrice,
+      BigInteger gasLimit) {
+    super(BINARY, contractAddress, web3j, transactionManager, gasPrice, gasLimit);
+  }
+
+  protected SimpleStorage(
+      String contractAddress,
+      Web3j web3j,
+      TransactionManager transactionManager,
+      ContractGasProvider contractGasProvider) {
+    super(BINARY, contractAddress, web3j, transactionManager, contractGasProvider);
+  }
+
+  public RemoteCall<TransactionReceipt> set(BigInteger value) {
+    final Function function =
+        new Function(
+            FUNC_SET,
+            Arrays.<Type>asList(new org.web3j.abi.datatypes.generated.Uint256(value)),
+            Collections.<TypeReference<?>>emptyList());
+    return executeRemoteCallTransaction(function);
+  }
+
+  public RemoteCall<BigInteger> get() {
+    final Function function =
+        new Function(
+            FUNC_GET,
+            Arrays.<Type>asList(),
+            Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {}));
+    return executeRemoteCallSingleValueReturn(function, BigInteger.class);
+  }
+
+  @Deprecated
+  public static SimpleStorage load(
+      String contractAddress,
+      Web3j web3j,
+      Credentials credentials,
+      BigInteger gasPrice,
+      BigInteger gasLimit) {
+    return new SimpleStorage(contractAddress, web3j, credentials, gasPrice, gasLimit);
+  }
+
+  @Deprecated
+  public static SimpleStorage load(
+      String contractAddress,
+      Web3j web3j,
+      TransactionManager transactionManager,
+      BigInteger gasPrice,
+      BigInteger gasLimit) {
+    return new SimpleStorage(contractAddress, web3j, transactionManager, gasPrice, gasLimit);
+  }
+
+  public static SimpleStorage load(
+      String contractAddress,
+      Web3j web3j,
+      Credentials credentials,
+      ContractGasProvider contractGasProvider) {
+    return new SimpleStorage(contractAddress, web3j, credentials, contractGasProvider);
+  }
+
+  public static SimpleStorage load(
+      String contractAddress,
+      Web3j web3j,
+      TransactionManager transactionManager,
+      ContractGasProvider contractGasProvider) {
+    return new SimpleStorage(contractAddress, web3j, transactionManager, contractGasProvider);
+  }
+
+  public static RemoteCall<SimpleStorage> deploy(
+      Web3j web3j, Credentials credentials, ContractGasProvider contractGasProvider) {
+    return deployRemoteCall(
+        SimpleStorage.class, web3j, credentials, contractGasProvider, BINARY, "");
+  }
+
+  @Deprecated
+  public static RemoteCall<SimpleStorage> deploy(
+      Web3j web3j, Credentials credentials, BigInteger gasPrice, BigInteger gasLimit) {
+    return deployRemoteCall(
+        SimpleStorage.class, web3j, credentials, gasPrice, gasLimit, BINARY, "");
+  }
+
+  public static RemoteCall<SimpleStorage> deploy(
+      Web3j web3j, TransactionManager transactionManager, ContractGasProvider contractGasProvider) {
+    return deployRemoteCall(
+        SimpleStorage.class, web3j, transactionManager, contractGasProvider, BINARY, "");
+  }
+
+  @Deprecated
+  public static RemoteCall<SimpleStorage> deploy(
+      Web3j web3j,
+      TransactionManager transactionManager,
+      BigInteger gasPrice,
+      BigInteger gasLimit) {
+    return deployRemoteCall(
+        SimpleStorage.class, web3j, transactionManager, gasPrice, gasLimit, BINARY, "");
+  }
+}

build.gradle

@@ -154,7 +154,7 @@ allprojects {
     ]
 
     options.errorprone {
-      excludedPaths '.*/(generated|.*ReferenceTest_.*)'
+      excludedPaths '.*/(generated/*.*|.*ReferenceTest_.*)'
       check('FutureReturnValueIgnored', CheckSeverity.OFF)
       check('InsecureCryptoUsage', CheckSeverity.WARN)
       check('FieldCanBeFinal', CheckSeverity.WARN)

gradle/versions.gradle

@@ -51,7 +51,7 @@ dependencyManagement {
     dependency('org.openjdk.jmh:jmh-core:1.21')
     dependency('org.openjdk.jmh:jmh-generator-annprocess:1.21')
 
-    dependency('org.web3j:core:3.5.0')
+    dependency('org.web3j:core:4.0.1')
     dependency("com.google.errorprone:error_prone_check_api:2.3.1")
     dependency("com.google.errorprone:error_prone_core:2.3.1")
     dependency("com.google.errorprone:error_prone_annotation:2.3.1")