Projets
/
map-generator


			
				
					
						
						
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							const { JSDOM } = require('jsdom');

describe('MG.geom utilities', () => {
  beforeAll(() => {
    // préparer un window global minimal
    const dom = new JSDOM(`<!doctype html><html><body></body></html>`);
    global.window = dom.window;
    global.document = dom.window.document;
    global.window.MG = global.window.MG || {};
    // injecter l'implémentation à tester depuis le fichier source
    const geomSrc = require('fs').readFileSync(require('path').resolve(__dirname, '../../public/assets/js/core/geom.js'), 'utf8');
    // exécuter le code pour qu'il attache window.MG.geom
    const fn = new Function('window', 'document', geomSrc + '\n return window.MG.geom;');
    const geom = fn(global.window, global.document);
    global.window.MG.geom = geom;
  });

  test('axialToPixel returns expected values for simple coords', () => {
    const size = 10;
    const p00 = global.window.MG.geom.axialToPixel(size, 0, 0);
    expect(p00.x).toBeCloseTo(0);
    expect(p00.y).toBeCloseTo(0);

    const p10 = global.window.MG.geom.axialToPixel(size, 1, 0);
    expect(p10.x).toBeGreaterThan(0);
    expect(p10.y).toBeCloseTo(0);

    const p01 = global.window.MG.geom.axialToPixel(size, 0, 1);
    expect(p01.y).toBeGreaterThan(0);
  });

  test('computeZoom clamps values', () => {
    expect(global.window.MG.geom.computeZoom(1, 10)).toBeLessThanOrEqual(5);
    expect(global.window.MG.geom.computeZoom(0.01, 0.01)).toBeGreaterThanOrEqual(0.1);
  });

  test('computePanOffset adds deltas', () => {
    const off = { x: 5, y: 7 };
    const r = global.window.MG.geom.computePanOffset(off, 3, -2);
    expect(r.x).toBe(8);
    expect(r.y).toBe(5);
  });
});