Function testConnection

test/manual/socks5.test.ts:299–312

(connectionString, clientOptions)

});

async function testConnection(connectionString, clientOptions) {
  const client = new MongoClient(connectionString, clientOptions);
  let topologyType;
  client.on('topologyDescriptionChanged', ev => (topologyType = ev.newDescription.type));

  try {
    await client.connect();
    await client.db('admin').command({ hello: 1 });
    await client.db('test').collection('test').findOne({});
  } finally {
    await client.close();
  }
  return topologyType;
}