JIRA issue : BAEL-960. Collection Factory Methods for Vavr. User: ignaciogallego@gmail.com (#2517)

* New test class for the collections factory methods in vavr

* rename unit test for collection factory methods

vavr/src/test/java/com/baeldung/vavr/collections/CollectionFactoryMethodsUnitTest.java

@@ -0,0 +1,107 @@
+package com.baeldung.vavr.collections;
+
+import static io.vavr.API.Array;
+import static io.vavr.API.Failure;
+import static io.vavr.API.List;
+import static io.vavr.API.None;
+import static io.vavr.API.Some;
+import static io.vavr.API.Stream;
+import static io.vavr.API.Success;
+import static io.vavr.API.Tuple;
+import static io.vavr.API.Vector;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+import io.vavr.Tuple3;
+import io.vavr.collection.Array;
+import io.vavr.collection.List;
+import io.vavr.collection.Stream;
+import io.vavr.collection.Vector;
+import io.vavr.control.Option;
+import io.vavr.control.Try;
+
+public class CollectionFactoryMethodsUnitTest {
+
+    @Test
+    public void givenANoneOptionElement_whenCreated_thenCorrect() {
+        Option<Integer> none = None();
+        assertFalse(none == null);
+        assertEquals(none, Option.none());
+    }
+
+    @Test
+    public void givenASomeOptionElement_whenCreated_thenCorrect() {
+        Option<Integer> some = Some(1);
+        assertFalse(some == null);
+        assertTrue(some.contains(1));
+    }
+
+    @Test
+    public void givenATupleElement_whenCreated_thenCorrect() {
+        Tuple3<Character, String, Integer> tuple = Tuple('a', "chain", 2);
+        assertTrue(tuple!=null);
+        assertEquals(tuple._1(), new Character('a'));
+        assertEquals(tuple._2(), "chain");
+        assertEquals(tuple._3().intValue(), 2);
+    }
+
+    @Test
+    public void givenASuccessObject_whenEvaluated_thenSuccess() {
+        Try<Integer> integer = Success(55);
+        assertEquals(integer.get().intValue(), 55);
+    }
+    @Test
+    public void givenAFailureObject_whenEvaluated_thenExceptionThrown() {
+        Try<Integer> failure = Failure(new Exception("Exception X encapsulated here"));
+        
+        try {
+            Integer i = failure.get();// evaluate a failure raise the exception
+            System.out.println(i);// not executed
+        } catch (Exception e) {
+            assertEquals(e.getMessage(), "Exception X encapsulated here");
+        }
+    }
+    
+    @Test
+    public void givenAList_whenCreated_thenCorrect() {
+        List<Integer> list = List(1, 2, 3, 4, 5);
+        
+        assertEquals(list.size(), 5);
+        assertEquals(list.get(0).intValue(), 1);
+    }
+    
+    @Test
+    public void givenAnEmptyList_whenCreated_thenCorrect() {
+        List<Integer> empty = List();
+        
+        assertEquals(empty.size(), 0);
+        assertEquals(empty, List.empty());
+    }
+    
+    @Test
+    public void givenAnArray_whenCreated_thenCorrect() {
+        Array<Integer> array = Array(1, 2, 3, 4, 5);
+        
+        assertEquals(array.size(), 5);
+        assertEquals(array.get(0).intValue(), 1);
+    }
+    
+    @Test
+    public void givenAStream_whenCreated_thenCorrect() {
+        Stream<Integer> stream = Stream(1, 2, 3, 4, 5);
+        
+        assertEquals(stream.size(), 5);
+        assertEquals(stream.get(0).intValue(), 1);
+    }
+    
+    @Test
+    public void givenAVector_whenCreated_thenCorrect() {
+        Vector<Integer> vector = Vector(1, 2, 3, 4, 5);
+        
+        assertEquals(vector.size(), 5);
+        assertEquals(vector.get(0).intValue(), 1);
+    }
+}