Add list assertions example

core-java/src/test/java/org/baeldung/java/lists/ListAssertJTest.java

@@ -0,0 +1,25 @@
+package org.baeldung.java.lists;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class ListAssertJTest {
+
+    private final List<String> list1 = Arrays.asList("1", "2", "3", "4");
+    private final List<String> list2 = Arrays.asList("1", "2", "3", "4");
+    private final List<String> list3 = Arrays.asList("1", "2", "4", "3");
+
+    @Test
+    public void whenTestingForEquality_ShouldBeEqual() throws Exception {
+        assertThat(list1)
+          .isEqualTo(list2)
+          .isNotEqualTo(list3);
+
+        assertThat(list1.equals(list2)).isTrue();
+        assertThat(list1.equals(list3)).isFalse();
+    }
+}

core-java/src/test/java/org/baeldung/java/lists/ListJUnitTest.java

@@ -0,0 +1,21 @@
+package org.baeldung.java.lists;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class ListJUnitTest {
+
+    private final List<String> list1 = Arrays.asList("1", "2", "3", "4");
+    private final List<String> list2 = Arrays.asList("1", "2", "3", "4");
+    private final List<String> list3 = Arrays.asList("1", "2", "4", "3");
+
+    @Test
+    public void whenTestingForEquality_ShouldBeEqual() throws Exception {
+        Assert.assertEquals(list1, list2);
+        Assert.assertNotSame(list1, list2);
+        Assert.assertNotEquals(list1, list3);
+    }
+}

core-java/src/test/java/org/baeldung/java/lists/ListTestNGTest.java

@@ -0,0 +1,21 @@
+package org.baeldung.java.lists;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class ListTestNGTest {
+
+    private final List<String> list1 = Arrays.asList("1", "2", "3", "4");
+    private final List<String> list2 = Arrays.asList("1", "2", "3", "4");
+    private final List<String> list3 = Arrays.asList("1", "2", "4", "3");
+
+    @Test
+    public void whenTestingForEquality_ShouldBeEqual() throws Exception {
+        Assert.assertEquals(list1, list2);
+        Assert.assertNotSame(list1, list2);
+        Assert.assertNotEquals(list1, list3);
+    }
+}