text: const { createBenchmark, createConnection } = require('../common');
  
  const { Request, TYPES } = require('../../src/tedious');
  
  const bench = createBenchmark(main, {
    n: [10, 100],
    size: [
      10,
      1024,
      1024 * 1024,
      10 * 1024 * 1024
    ]
  });
  
  function main({ n, size }) {
    createConnection(function(connection) {
      const buf = Buffer.alloc(size);
      buf.fill('x');
  
      let i = 0;
  
      bench.start();
  
      (function cb() {
        const request = new Request('SELECT DATALENGTH(@value)', (err) => {
          if (err) {
            throw err;
          }
  
          if (i++ === n) {
            bench.end(n);
  
            connection.close();
  
            return;
          }
  
          cb();
        });
  
        request.addParameter('value', TYPES.VarBinary, buf);
  
        connection.execSql(request);
      })();
    });
  }
  