Function setup

benchmark/test_runner/run-single-test-file.js:22–26

(numberOfTestFiles)

}

function setup(numberOfTestFiles) {
  tmpdir.refresh();
  const dirPath = getTestDirPath(numberOfTestFiles);
  makeTestDirWithFiles(dirPath, numberOfTestFiles);
}

/**
 * This benchmark evaluates the overhead of running a single test file under different