function copyFixture(fixtureName, dest) {
  const fixtureSource = resolveFixturePath(fixtureName);
  fs.mkdirSync(path.dirname(dest), { recursive: true });
  fs.cpSync(fixtureSource, dest);
}
Synchronously copy a fixture to the given destination file path.
Creates parent directories of the destination path if necessary.

@param {string} fixtureName - Relative path from __dirname to fixture, or absolute path
@param {*} dest - Destination directory