Add unit test

Author: pearmini

test/unit/dom/p5.MediaElement.js

@@ -2,10 +2,12 @@ import { vi } from 'vitest';
 import { mockP5, mockP5Prototype } from '../../js/mocks';
 import { default as media, MediaElement } from '../../../src/dom/p5.MediaElement';
 import { Element } from '../../../src/dom/p5.Element';
+import { default as pixels } from '../../../src/image/pixels';
 
 suite('p5.MediaElement', () => {
   beforeAll(() => {
     media(mockP5, mockP5Prototype);
+    pixels(mockP5, mockP5Prototype);
     navigator.mediaDevices.getUserMedia = vi.fn()
       .mockResolvedValue("stream-value");
   });
@@ -235,4 +237,22 @@ suite('p5.MediaElement', () => {
       assert.isTrue(testElement.elt.playsInline);
     });
   });
+
+  suite("p5.MediaElement.copy", function () {
+    beforeAll(() => {
+      globalThis.p5 = { prototype: mockP5Prototype };
+    });
+
+    afterAll(() => {
+      delete globalThis.p5;
+      document.body.innerHTML = "";
+    });
+
+    test('should not throw an error', function() {
+      const testElement = mockP5Prototype.createVideo('/test/unit/assets/nyan_cat.gif');
+      assert.doesNotThrow(() => {
+        testElement.copy(0, 0, 10, 10, 0, 0, 10, 10);
+      });
+    });
+  })
 });