webamp/js/__tests__/skinSprites-test.js

import skinSprites from '../skinSprites';

const getNames = (arr) => arr.map((item) => item.name);

const spriteFiles = skinSprites.filter((file) => file.sprites);

describe('skinSprites', () => {
  it('each spritSheet has a unique name', () => {
    const spriteSheetNames = getNames(skinSprites);
    const seenNames = [];
    spriteSheetNames.forEach((name) => {
      expect(seenNames).not.toContain(name);
      seenNames.push(name);
    });
  });
  it('each sprite has a unique name', () => {
    let spriteNames = [];
    spriteFiles.forEach((spriteSheet) => {
      spriteNames = spriteNames.concat(
        getNames(spriteSheet.sprites)
      );
    });
    const seenNames = [];
    spriteNames.forEach((name) => {
      expect(seenNames).not.toContain(name);
      seenNames.push(name);
    });
  });
  it('each sprite has the needed properties', () => {
    spriteFiles.forEach((spriteSheet) => {
      spriteSheet.sprites.forEach((sprite) => {
        expect(typeof sprite.name).toBe('string');
        expect(typeof sprite.x).toBe('number');
        expect(typeof sprite.y).toBe('number');
        expect(typeof sprite.height).toBe('number');
        expect(typeof sprite.width).toBe('number');
      });
    });
  });
});