@spearwolf/twopoint5d/lib/utils/findRootNode.spec.js

a library to create 2.5d realtime graphics and pixelart with three.js

import { Object3D } from 'three';
import { describe, expect, it } from 'vitest';
import { findRootNode } from './findRootNode.js';
describe('findRootNode', () => {
    it('should return the root node when given a child node', () => {
        const rootNode = new Object3D();
        const childNode = new Object3D();
        rootNode.add(childNode);
        const result = findRootNode(childNode);
        expect(result).toBe(rootNode);
    });
    it('should return the root node when given a grandchild node', () => {
        const rootNode = new Object3D();
        const childNode = new Object3D();
        rootNode.add(childNode);
        const grandchildNode = new Object3D();
        childNode.add(grandchildNode);
        const result = findRootNode(grandchildNode);
        expect(result).toBe(rootNode);
    });
    it('should return the same node when given a root node', () => {
        const rootNode = new Object3D();
        const result = findRootNode(rootNode);
        expect(result).toBe(rootNode);
    });
    it('should return the node itself when given a node without a parent', () => {
        const node = new Object3D();
        const result = findRootNode(node);
        expect(result).toBe(node);
    });
});
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