describe('genDiff simple answer tree', () => {
  test('genDiffTree JSON vs answer', () => {
    const actual = genDiff('__tests__/__fixtures__/input/beforeTree.json',
      '__tests__/__fixtures__/input/afterTree.json', 'simple');
    const expected = fs.readFileSync('__tests__/__fixtures__/answer/answerTree.txt', 'utf8').trim();