testRunner.js

const testRunner = async (req, next) => {
  testResults.database = await databaseTest();
  if (testResults.database.message !== 'OK') {
    testResults.status = 500;
  }
  testResults.network = await networkTest();
  if (testResults.network.message !== 'OK') {
    testResults.status = 500;
  }
  // etc...
};