test: linked list node

assignment/src/test/java/appointmentplanner/customlist/CustomListNodeTest.java

@@ -0,0 +1,41 @@
+
+package appointmentplanner.customlist;
+
+import static org.assertj.core.api.Assertions.*;
+import org.junit.jupiter.api.Test;
+
+public class CustomListNodeTest {
+
+  @Test
+  void newListNode_shouldCreaeteNotNullNodeObject() {
+    CustomLinkedListNode<String> node = new CustomLinkedListNode<>(null, "item1");
+    assertThat(node).isNotNull();
+  }
+
+  @Test
+  void setNext_shouldSetNextNodeSuccessfully() {
+    CustomLinkedListNode<String> node1 = new CustomLinkedListNode<>(null, "item1");
+    CustomLinkedListNode<String> node2 = new CustomLinkedListNode<>(null, "item2");
+
+    node1.setNext(node2);
+
+    assertThat(node1.getNext()).isEqualTo(node2);
+  }
+
+  @Test
+  void getItem_shouldReturnSetItemSuccessfully() {
+    CustomLinkedListNode<String> node = new CustomLinkedListNode<>(null, "item1");
+    assertThat(node.getItem()).isEqualTo("item1");
+  }
+
+  @Test
+  void getNext_shouldReturnSetNextNodeSuccessfully() {
+    CustomLinkedListNode<String> node1 = new CustomLinkedListNode<>(null, "item1");
+    CustomLinkedListNode<String> node2 = new CustomLinkedListNode<>(null, "item2");
+
+    node1.setNext(node2);
+
+    assertThat(node1.getNext()).isEqualTo(node2);
+  }
+
+}