1 //
2 // Copyright (c) 2017 James E. King III
3 //
4 // Distributed under the Boost Software License, Version 1.0.
5 // (See accompanying file LICENSE_1_0.txt or copy at
6 // https://www.boost.org/LICENSE_1_0.txt)
7 //
8 // Positive and negative testing for detail::random_provider
9 //
10
11 #include <boost/array.hpp>
12 #include <boost/cstdint.hpp>
13 #include <boost/detail/lightweight_test.hpp>
14
15 // The mock needs to load first for posix system call redirection to work properly
16 #include "mock_random.hpp"
17 #include <boost/uuid/detail/random_provider.hpp>
18 #include <boost/uuid/uuid.hpp>
19 #include <boost/uuid/uuid_io.hpp>
20 #include <limits>
21 #include <string.h>
22
23
main(int,char * [])24 int main(int, char*[])
25 {
26 #if !defined(BOOST_UUID_TEST_RANDOM_MOCK) // Positive Testing
27
28 boost::uuids::detail::random_provider provider;
29 boost::array<unsigned int, 2> ints;
30
31 // test generator()
32 ints[0] = 0;
33 ints[1] = 0;
34 provider.generate(ints.begin(), ints.end());
35 BOOST_TEST_NE(ints[0], ints[1]);
36
37 // test name()
38 BOOST_TEST_GT(strlen(provider.name()), 4u);
39
40 // test get_random_bytes()
41 char buf1[64];
42 char buf2[64];
43 provider.get_random_bytes(buf1, 64);
44 provider.get_random_bytes(buf2, 64);
45 BOOST_TEST_NE(0, memcmp(buf1, buf2, 64));
46
47 #else // Negative Testing
48
49 if (expectations_capable())
50 {
51 // Test fail acquiring context if the provider supports it
52 if (provider_acquires_context())
53 {
54 expect_next_call_success(false);
55 BOOST_TEST_THROWS(boost::uuids::detail::random_provider(),
56 boost::uuids::entropy_error);
57 BOOST_TEST(expectations_met());
58 }
59
60 // Test fail acquiring entropy
61 if (provider_acquires_context())
62 {
63 expect_next_call_success(true);
64 }
65 expect_next_call_success(false);
66 // 4 is important for the posix negative test (partial read) to work properly
67 // as it sees a size of 4, returns 1, causing a 2nd loop to read 3 more bytes...
68 char buf[4];
69 BOOST_TEST_THROWS(boost::uuids::detail::random_provider().get_random_bytes(buf, 4),
70 boost::uuids::entropy_error);
71 BOOST_TEST(expectations_met());
72 }
73
74 #endif
75
76 return boost::report_errors();
77 }
78