Function runClockRewindCheck

app/src/Licensing/OfflineSelfTest.cpp:142–160

* @brief Confirms the monotonic floor pins now to a previously observed future time. */

 * @brief Confirms the monotonic floor pins now to a previously observed future time.
 */
[[nodiscard]] static int runClockRewindCheck()
{
  QSettings settings(QStringLiteral("SerialStudioSelfTest"), QStringLiteral("OfflineClock"));
  settings.clear();

  Licensing::SimpleCrypt crypt(0x0123456789abcdefULL);
  crypt.setIntegrityProtectionMode(Licensing::SimpleCrypt::ProtectionHash);

  const auto future = QDateTime::currentDateTime().addYears(5);
  settings.beginGroup("licensing");
  settings.setValue("lastSeen", crypt.encryptToString(future.toString(Qt::RFC2822Date)));
  settings.endGroup();

  const auto floored = Licensing::MonotonicClock::nowFloored(settings, crypt);
  settings.clear();

  return expect("clock floored to previously observed future (rewind blocked)",
                floored >= future.addSecs(-60));
}

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// Entry point