JAVA-23082 Review log statements for projects - Week 16 - 2023 (moved-13) (conti-1)

core-java-modules/core-java-streams-2/src/test/java/com/baeldung/streams/StreamToImmutableUnitTest.java

@@ -1,57 +1,59 @@
 package com.baeldung.streams;
 
 import com.google.common.collect.ImmutableList;
-import org.junit.Test;
 
 import java.util.*;
 import java.util.stream.IntStream;
 
 import static java.util.stream.Collectors.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-public class StreamToImmutableUnitTest {
+import org.junit.jupiter.api.Test;
+
+class StreamToImmutableUnitTest {
 
     @Test
-    public void whenUsingCollectingToImmutableSet_thenSuccess() {
+    void whenUsingCollectingToImmutableSet_thenSuccess() {
         List<String> givenList = Arrays.asList("a", "b", "c");
         List<String> result = givenList.stream()
             .collect(collectingAndThen(toSet(), ImmutableList::copyOf));
 
-        System.out.println(result.getClass());
+        assertEquals("com.google.common.collect.RegularImmutableList", result.getClass().getName());
     }
 
     @Test
-    public void whenUsingCollectingToUnmodifiableList_thenSuccess() {
+    void whenUsingCollectingToUnmodifiableList_thenSuccess() {
         List<String> givenList = new ArrayList<>(Arrays.asList("a", "b", "c"));
         List<String> result = givenList.stream()
             .collect(collectingAndThen(toList(), Collections::unmodifiableList));
 
-        System.out.println(result.getClass());
+        assertEquals("java.util.Collections$UnmodifiableRandomAccessList", result.getClass().getName());
     }
 
     @Test
-    public void whenCollectToImmutableList_thenSuccess() {
+    void whenCollectToImmutableList_thenSuccess() {
         List<Integer> list = IntStream.range(0, 9)
             .boxed()
             .collect(ImmutableList.toImmutableList());
 
-        System.out.println(list.getClass());
+        assertEquals("com.google.common.collect.RegularImmutableList", list.getClass().getName());
     }
 
     @Test
-    public void whenCollectToMyImmutableListCollector_thenSuccess() {
+    void whenCollectToMyImmutableListCollector_thenSuccess() {
         List<String> givenList = Arrays.asList("a", "b", "c", "d");
         List<String> result = givenList.stream()
             .collect(MyImmutableListCollector.toImmutableList());
 
-        System.out.println(result.getClass());
+        assertEquals("java.util.Collections$UnmodifiableRandomAccessList", result.getClass().getName());
     }
 
     @Test
-    public void whenPassingSupplier_thenSuccess() {
+    void whenPassingSupplier_thenSuccess() {
         List<String> givenList = Arrays.asList("a", "b", "c", "d");
         List<String> result = givenList.stream()
             .collect(MyImmutableListCollector.toImmutableList(LinkedList::new));
 
-        System.out.println(result.getClass());
+        assertEquals("java.util.Collections$UnmodifiableList", result.getClass().getName());
     }
 }