// Copyright 2011 Mark Cavage, Inc.  All rights reserved.

var test = require('tap').test;

var asn1 = require('asn1');


///--- Globals

var BerReader = asn1.BerReader;
var BerWriter = asn1.BerWriter;
var Attribute;
var Change;


///--- Tests

test('load library', function (t) {
  Attribute = require('../lib/index').Attribute;
  Change = require('../lib/index').Change;
  t.ok(Attribute);
  t.ok(Change);
  t.end();
});


test('new no args', function (t) {
  t.ok(new Change());
  t.end();
});


test('new with args', function (t) {
  var change = new Change({
    operation: 0x00,
    modification: new Attribute({
      type: 'cn',
      vals: ['foo', 'bar']
    })
  });
  t.ok(change);

  t.equal(change.operation, 'add');
  t.equal(change.modification.type, 'cn');
  t.equal(change.modification.vals.length, 2);
  t.equal(change.modification.vals[0], 'foo');
  t.equal(change.modification.vals[1], 'bar');

  t.end();
});


test('GH-31 (multiple attributes per Change)', function (t) {
  try {
    t.notOk(new Change({
      operation: 'replace',
      modification: {
        cn: 'foo',
        sn: 'bar'
      }
    }), 'should have thrown');
  } catch (e) {
    t.ok(e);
    t.end();
  }
});


test('toBer', function (t) {
  var change = new Change({
    operation: 'Add',
    modification: new Attribute({
      type: 'cn',
      vals: ['foo', 'bar']
    })
  });
  t.ok(change);

  var ber = new BerWriter();
  change.toBer(ber);
  var reader = new BerReader(ber.buffer);
  t.ok(reader.readSequence());
  t.equal(reader.readEnumeration(), 0x00);
  t.ok(reader.readSequence());
  t.equal(reader.readString(), 'cn');
  t.equal(reader.readSequence(), 0x31); // lber set
  t.equal(reader.readString(), 'foo');
  t.equal(reader.readString(), 'bar');
  t.end();
});


test('parse', function (t) {
  var ber = new BerWriter();
  ber.startSequence();
  ber.writeEnumeration(0x00);
  ber.startSequence();
  ber.writeString('cn');
  ber.startSequence(0x31);
  ber.writeStringArray(['foo', 'bar']);
  ber.endSequence();
  ber.endSequence();
  ber.endSequence();

  var change = new Change();
  t.ok(change);
  t.ok(change.parse(new BerReader(ber.buffer)));

  t.equal(change.operation, 'add');
  t.equal(change.modification.type, 'cn');
  t.equal(change.modification.vals.length, 2);
  t.equal(change.modification.vals[0], 'foo');
  t.equal(change.modification.vals[1], 'bar');

  t.end();
});