Create unit tests for Web3ClientVersion (#194)

ethereum/jsonrpc/src/test/java/tech/pegasys/pantheon/ethereum/jsonrpc/internal/methods/Web3ClientVersionTest.java

@@ -0,0 +1,46 @@
+/*
+ * 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.ethereum.jsonrpc.internal.methods;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import tech.pegasys.pantheon.ethereum.jsonrpc.internal.JsonRpcRequest;
+import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcResponse;
+import tech.pegasys.pantheon.ethereum.jsonrpc.internal.response.JsonRpcSuccessResponse;
+
+import org.junit.Test;
+
+public class Web3ClientVersionTest {
+
+  private final String CLIENT_VERSION = "pantheon/1.0.0";
+  private final String JSON_RPC_VERSION = "2.0";
+  private final String ETH_METHOD = "web3_clientVersion";
+
+  private final Web3ClientVersion method = new Web3ClientVersion(CLIENT_VERSION);
+
+  @Test
+  public void shouldReturnCorrectMethodName() {
+    assertThat(method.getName()).isEqualTo(ETH_METHOD);
+  }
+
+  @Test
+  public void shouldReturnCorrectResult() {
+    final JsonRpcRequest request =
+        new JsonRpcRequest(JSON_RPC_VERSION, ETH_METHOD, new Object[] {});
+
+    final JsonRpcResponse expected = new JsonRpcSuccessResponse(request.getId(), CLIENT_VERSION);
+    final JsonRpcResponse actual = method.response(request);
+
+    assertThat(actual).isEqualToComparingFieldByFieldRecursively(expected);
+  }
+}