Romez/backend-project-lvl2

import { promises as fs } from 'fs';
import path from 'path';
import genDiff from '../src';

const dataSet = [
  ['.json', 'pretty'],
  ['.yml', 'pretty'],
  ['.ini', 'pretty'],
  ['.json', 'plain'],
  ['.yml', 'plain'],
  ['.ini', 'plain'],
  ['.json', 'json'],
  ['.yml', 'json'],
  ['.ini', 'json'],
];

describe.each(dataSet)('%s, %s', (ext, format) => {
  const dir = path.resolve(__dirname, '__fixtures__');

  const beforePath = path.format({ dir, name: 'before', ext });
  const afterPath = path.format({ dir, name: 'after', ext });

  test('genDiff', async () => {
    const expectedPath = path.format({ dir, name: `result-${format}.txt` });
    const expected = await fs.readFile(expectedPath, 'utf8');

    const result = genDiff(beforePath, afterPath, { format, keyOnly: false });
    expect(result).toMatch(expected);
  });

  test('getDiff only keys', async () => {
    const expectedPath = path.format({ dir, name: `result-${format}-key-only.txt` });
    const expected = await fs.readFile(expectedPath, 'utf8');

    const result = genDiff(beforePath, afterPath, { format, keyOnly: true });

    expect(result).toMatch(expected);
  });
});