1 // Copyright (C) 2011-2021 Internet Systems Consortium, Inc. ("ISC")
2 //
3 // This Source Code Form is subject to the terms of the Mozilla Public
4 // License, v. 2.0. If a copy of the MPL was not distributed with this
5 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
6
7 /// \brief Test of QidGenerator
8 ///
9
10 #include <config.h>
11
12 #include <gtest/gtest.h>
13
14 #include <dns/qid_gen.h>
15
16 using namespace isc::dns;
17
18 // Tests the operation of the Qid generator
19
20 // Check that getInstance returns a singleton
TEST(QidGenerator,singleton)21 TEST(QidGenerator, singleton) {
22 QidGenerator& g1 = QidGenerator::getInstance();
23 QidGenerator& g2 = QidGenerator::getInstance();
24
25 EXPECT_TRUE(&g1 == &g2);
26 }
27
TEST(QidGenerator,generate)28 TEST(QidGenerator, generate) {
29 // We'll assume that cryptolink's generator is 'good enough', and won't
30 // do full statistical checking here. Let's just call it the xkcd
31 // test (http://xkcd.com/221/), and check if three consecutive
32 // generates are not all the same.
33 uint16_t one, two, three;
34 QidGenerator& gen = QidGenerator::getInstance();
35 one = gen.generateQid();
36 two = gen.generateQid();
37 three = gen.generateQid();
38 ASSERT_FALSE((one == two) && (one == three));
39 }
40