lmao

mock_render.js

const { expect } = require('chai');
const { Vector3 } = require('three');

describe('lookup', function callback() {
    it('does not crash', function callback() {
        const jsdom = new (require('jsdom')).JSDOM();
        const canvas = jsdom.window.document.createElement('canvas');
        global.window = jsdom.window;
        global.document = jsdom.window.document;
        
        const THREE = require('three');
        
        const width = 400, height = 200;
        const context = require('gl')(200, 400);
        const renderer = new THREE.WebGLRenderer({
            antialias: true, 
            canvas, context
        });
    
        renderer.sortObjects = false;
        renderer.setClearColor(0xffffff);
        renderer.setSize(width, height, false);
        camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 10 );
        camera.position.z = 1;
    
        scene = new THREE.Scene();
    
        geometry = new THREE.BoxGeometry( 0.2, 0.2, 0.2 );
        material = new THREE.MeshNormalMaterial();
    
        mesh = new THREE.Mesh( geometry, material );
        scene.add( mesh );

        const points = [
            new Vector3(1,3,4),
            new Vector3(3,5,7),
            new Vector3(9,4,3),
            new Vector3(1,3,2),
        ];
        
        const line = new THREE.Line(new THREE.BufferGeometry().setFromPoints(points), new THREE.LineBasicMaterial({ color: 0x666fff }));
        scene.add(line);
        
        const wf = new THREE.LineSegments(new THREE.WireframeGeometry(new THREE.SphereBufferGeometry( 100, 100, 100 )));
        scene.add(wf);

        renderer.setSize( window.innerWidth, window.innerHeight );
        window.document.body.appendChild( renderer.domElement );
        
        renderer.render(scene, camera);
        let recursive = {};
        recursive.r = recursive;
        recursive.obj = { m : {}, r : recursive};
        recursive.obj.m.r = recursive.obj;
        recursive.toJSON = function () {
            return this;
        };
        expect(scene.children).to.include.members([wf, recursive, mesh]);
        wf.removeFromScene();
        expect(scene.children).to.include(wf);
    });
});