BAEL-1461: Combined modules and refactored

ethereum/src/test/java/com/baeldung/web3j/services/EthereumContractUnitTest.java

@@ -0,0 +1,33 @@
+package com.baeldung.web3j.services;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.concurrent.CompletableFuture;
+
+public class EthereumContractUnitTest {
+
+    private Web3Service web3Service;
+
+    @Before
+    public void setup() {
+        web3Service = new Web3Service();
+    }
+
+    @Test
+    public void testContract() {
+        CompletableFuture<String> result = web3Service.fromScratchContractExample();
+        assert (result instanceof CompletableFuture);
+    }
+
+    @Test
+    public void sendTx() {
+        CompletableFuture<String> result = web3Service.sendTx();
+        assert (result instanceof CompletableFuture);
+    }
+
+    @After
+    public void cleanup() {
+    }
+}