runTest = (fileName, testDir, format) => {
    /* eslint-disable */
    const fileExtension = getFileExtension(format);
    const input = require(`./${testDir}/input/${fileName}.in.dbml`);
    const output = require(`./${testDir}/output/${fileName}.out.${fileExtension}`);
    const res = exporter.export(input, format);

    expect(res).toBe(output);
    /* eslint-enable */
  }
@param {string} format = [json|mysql|postgres]