mariadb-connector-nodejs/test/integration/test-big-query.js

"use strict";

const base = require("../base.js");
const assert = require("chai").assert;

describe("Big query", function() {
  const testSize = 16 * 1024 * 1024 + 800; // more than one packet
  let maxAllowedSize, buf;

  before(function(done) {
    shareConn.query("SELECT @@max_allowed_packet as t", function(err, results) {
      if (err) {
        done(err);
      } else {
        maxAllowedSize = results[0].t;
        if (testSize < maxAllowedSize) {
          buf = Buffer.alloc(testSize);
          for (let i = 0; i < buf.length; i++) {
            buf[i] = 97 + i % 10;
          }
        }
        done();
      }
    });
  });

  it("parameter bigger than packet size", function(done) {
    if (maxAllowedSize <= testSize) this.skip();
    this.timeout(10000); //can take some time
    shareConn.query("CREATE TEMPORARY TABLE bigParameter (b longblob)");
    shareConn.query("insert into bigParameter(b) values(?)", [buf], function(err) {
      if (err) {
        done(err);
      } else {
        shareConn.query("SELECT * from bigParameter", function(err, rows) {
          if (err) {
            throw done(err);
          } else {
            assert.deepEqual(rows[0].b, buf);
            done();
          }
        });
      }
    });
  });
});