memcached/test/memcached-add.test.js

A fully featured Memcached API client, supporting both single and clustered Memcached servers through consistent hashing and failover/failure. Memcached is rewrite of nMemcached, which will be deprecated in the near future.

'use strict';

/**
 * Test dependencies
 */
var assert = require('assert')
  , fs = require('fs')
  , common = require('./common')
  , Memcached = require('../');

global.testnumbers = global.testnumbers || +(Math.random(10) * 1000000).toFixed();

/**
 * Expresso test suite for all `add` related
 * memcached commands
 */
describe('Memcached ADD', function () {
  /**
   * Make sure that adding a key which already exists returns an error.
   */
  it('fail to add an already existing key', function (done) {
    var memcached = new Memcached(common.servers.single)
        , message = common.alphabet(256)
        , testnr = ++global.testnumbers
        , callbacks = 0;

      memcached.set('test:' + testnr, message, 1000, function (error, ok) {
        ++callbacks;

        assert.ok(!error);
        ok.should.be.true;

        memcached.add('test:' + testnr, message, 1000, function (error, answer) {
          ++callbacks;

          assert.ok(error);

          memcached.end(); // close connections
          assert.equal(callbacks, 2);
          done();
        });
      });
  });
});