test: Add tests cases for DpInstance component

Author: Jasenkoo

src/packages/components/DpInstance/__tests__/DpInstance.spec.ts

@@ -0,0 +1,18 @@
+import { describe, expect, it } from 'vitest';
+import { mount } from '@vue/test-utils';
+import { DpInstance } from '@packages/components/DpInstance';
+
+// Logic in this component is covered by other tests
+describe('DpInstance', () => {
+    it('Should render component', () => {
+        const wrapper = mount(DpInstance);
+
+        expect(wrapper.html()).toContain('<div>');
+    });
+
+    it('Should render component as custom HTML tag', () => {
+        const wrapper = mount(DpInstance, { props: { as: 'section' } });
+
+        expect(wrapper.html()).toContain('<section>');
+    });
+});