Merge branch 'future-vavr' of https://github.com/ahmedtawila/tutorials

vavr/src/main/java/com/baeldung/vavr/future/Tester.java

@@ -0,0 +1,22 @@
+package com.baeldung.vavr.future;
+
+import static org.junit.Assert.assertEquals;
+import org.junit.Test;
+
+import io.vavr.concurrent.Future;
+
+public class Tester {
+
+    @Test
+    public void start() {
+        Future<Integer> resultFuture = Future.of(() -> addOne(4));
+        Integer result = resultFuture.get();
+
+        assertEquals(5, (int) result);
+    }
+
+    public Integer addOne(Integer num) {
+        return num + 1;
+    }
+
+}

vavr/src/main/java/com/vavr/future/Tester.java

@@ -0,0 +1,57 @@
+package com.vavr.future;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.concurrent.ExecutorService;
+
+import org.junit.Test;
+
+import io.vavr.concurrent.Future;
+
+public class Tester {
+
+    @Test
+    public void whenAppendData_thenCorrect() {
+        String initialValue = "Welcome to ";
+        Future<String> resultFuture = Future.of(() -> appendData(initialValue));
+        String result = resultFuture.get();
+
+        assertEquals("Welcome to Baeldung!", result);
+    }
+
+    @Test
+    public void whenAppendData_thenSuccess() {
+        String initialValue = "Welcome to ";
+        Future<String> resultFuture = Future.of(() -> appendData(initialValue))
+            .onSuccess(finalResult -> System.out.println("Successfully Completed - Result: " + finalResult))
+            .onFailure(finalResult -> System.out.println("Failed - Result: " + finalResult));
+        String result = resultFuture.get();
+
+        assertEquals("Welcome to Baeldung!", result);
+    }
+
+    @Test
+    public void whenChainingCallbacks_thenCorrect() {
+        String initialValue = "Welcome to ";
+        Future<String> resultFuture = Future.of(() -> appendData(initialValue))
+            .andThen(finalResult -> System.out.println("Completed - 1: " + finalResult))
+            .andThen(finalResult -> System.out.println("Completed - 2: " + finalResult));
+        String result = resultFuture.get();
+
+        assertEquals("Welcome to Baeldung!", result);
+    }
+
+    @Test
+    public void whenCallAwait_thenCorrect() {
+        String initialValue = "Welcome to ";
+        Future<String> resultFuture = Future.of(() -> appendData(initialValue));
+        resultFuture = resultFuture.await();
+        String result = resultFuture.get();
+
+        assertEquals("Welcome to Baeldung!", result);
+    }
+
+    public String appendData(String initial) {
+        return initial + "Baeldung!";
+    }
+}