bdb-fork-grimen/test/test_cursor.js

Berkeley DB(5.X) bindings for node

// Copyright 2011 Mark Cavage <mcavage@gmail.com> All rights reserved.
var assert = require('assert');
var Buffer = require('buffer').Buffer;
var exec  = require('child_process').exec;
var fs = require('fs');
var BDB = require('..');
var helper = require('./helper');

// setup
var env_location = "/tmp/" + helper.uuid();
fs.mkdirSync(env_location, 0750);

process.on('uncaughtException', function(err) {
  console.log(err.message + ':\n' + err.stack);
  exec("rm -fr " + env_location, function(err, stdout, stderr) {});
});

var env = new BDB.DbEnv();
var stat = env.openSync({home:env_location});
assert.equal(0, stat.code, stat.message);

var db = new BDB.Db(env);
stat = db.openSync({env: env, file: helper.uuid()});
assert.equal(0, stat.code, stat.message);

var key = new Buffer(helper.uuid());
var val = new Buffer(helper.uuid());
db.put({key: key, val: val}, function(res) {
  assert.equal(0, res.code, res.message);
  db.cursorGet({key: key}, function(res, objects) {
    if (res.code != 0 && res.code != BDB.FLAGS.DB_NOTFOUND) {
      assert.ok(false, 'Return code failure');
    }
    assert.ok(objects, "no data from get");
    assert.equal(1, objects.length, "wrong number of objects: " +
		 objects.length);

    assert.equal(key.toString(encoding='utf8'),
		 objects[0].key.toString(encoding='utf8'),
		 "key mismatch");

    assert.equal(val.toString(encoding='utf8'),
		 objects[0].value.toString(encoding='utf8'),
		 "val mismatch");

    exec("rm -fr " + env_location, function(err, stdout, stderr) {});
    console.log('test_cursor: PASSED');
  });
});