feat: implement addOrUpdateListItem method

tests/ListItemRequest.spec.ts

@@ -0,0 +1,33 @@
+import { ListItemRequest } from '../src/models/ListItemRequest';
+import { expect } from 'chai';
+
+describe('ListItemRequest', function () {
+  it('should be defined', function () {
+    expect(ListItemRequest).to.not.be.undefined;
+  });
+
+  it('should have a constructor with 5 parameters', function () {
+    expect(ListItemRequest).to.have.property('constructor');
+    expect(ListItemRequest).to.have.lengthOf(5);
+  });
+
+  it('should have a constructor that takes a listId, id, name, numericValue, and color and sets the listId, id, name, numericValue, and color properties', function () {
+    const listId = 1;
+    const id = '1';
+    const name = 'name';
+    const numericValue = 1;
+    const color = 'color';
+    const listItemRequest = new ListItemRequest(
+      listId,
+      id,
+      name,
+      numericValue,
+      color
+    );
+    expect(listItemRequest).to.have.property('listId', listId);
+    expect(listItemRequest).to.have.property('id', id);
+    expect(listItemRequest).to.have.property('name', name);
+    expect(listItemRequest).to.have.property('numericValue', numericValue);
+    expect(listItemRequest).to.have.property('color', color);
+  });
+});