java 8 new tests and quick maven upgrades

core-java-8/src/test/java/org/baeldung/java8/Java8CollectionCleanupUnitTest.java

@@ -0,0 +1,41 @@
+package org.baeldung.java8;
+
+import static org.hamcrest.Matchers.hasSize;
+import static org.junit.Assert.assertThat;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.junit.Test;
+
+import com.google.common.collect.Lists;
+
+public class Java8CollectionCleanupUnitTest {
+
+    // tests -
+
+    @Test
+    public void givenListContainsNulls_whenFilteringParallel_thenCorrect() {
+        final List<Integer> list = Lists.newArrayList(null, 1, 2, null, 3, null);
+        final List<Integer> listWithoutNulls = list.parallelStream().filter(i -> i != null).collect(Collectors.toList());
+
+        assertThat(listWithoutNulls, hasSize(3));
+    }
+
+    @Test
+    public void givenListContainsNulls_whenFilteringSerial_thenCorrect() {
+        final List<Integer> list = Lists.newArrayList(null, 1, 2, null, 3, null);
+        final List<Integer> listWithoutNulls = list.stream().filter(i -> i != null).collect(Collectors.toList());
+
+        assertThat(listWithoutNulls, hasSize(3));
+    }
+
+    @Test
+    public void givenListContainsDuplicates_whenRemovingDuplicatesWithJava8_thenCorrect() {
+        final List<Integer> listWithDuplicates = Lists.newArrayList(1, 1, 2, 2, 3, 3);
+        final List<Integer> listWithoutDuplicates = listWithDuplicates.parallelStream().distinct().collect(Collectors.toList());
+
+        assertThat(listWithoutDuplicates, hasSize(3));
+    }
+
+}

core-java-8/src/test/java/org/baeldung/java8/Java8SortUnitTest.java

@@ -1,6 +1,5 @@
 package org.baeldung.java8;
 
-import static org.baeldung.java8.entity.Human.compareByNameThenAge;
 import static org.hamcrest.Matchers.equalTo;
 
 import java.util.Collections;