1 ///////////////////////////////////////////////////////////////////////////////
2 // test_assert.cpp
3 //
4 // Copyright 2008 Eric Niebler. Distributed under the Boost
5 // Software License, Version 1.0. (See accompanying file
6 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7
8 #include <iostream>
9 #include <boost/xpressive/xpressive_static.hpp>
10 #include <boost/xpressive/regex_actions.hpp>
11 #include <boost/test/unit_test.hpp>
12
13 using namespace boost::xpressive;
14
three_or_six(ssub_match const & sub)15 bool three_or_six(ssub_match const &sub)
16 {
17 return sub.length() == 3 || sub.length() == 6;
18 }
19
20 ///////////////////////////////////////////////////////////////////////////////
21 // test1
22 // simple custom assert that checks the length of a matched sub-expression
test1()23 void test1()
24 {
25 std::string str("foo barbaz fink");
26 // match words of 3 characters or 6 characters.
27 sregex rx = (bow >> +_w >> eow)[ check(&three_or_six) ] ;
28
29 sregex_iterator first(str.begin(), str.end(), rx), last;
30 BOOST_CHECK_EQUAL(std::distance(first, last), 2);
31 }
32
33 ///////////////////////////////////////////////////////////////////////////////
34 // test2
35 // same as above, but using a lambda
test2()36 void test2()
37 {
38 std::string str("foo barbaz fink");
39 // match words of 3 characters or 6 characters.
40 sregex rx = (bow >> +_w >> eow)[ check(length(_)==3 || length(_)==6) ] ;
41
42 sregex_iterator first(str.begin(), str.end(), rx), last;
43 BOOST_CHECK_EQUAL(std::distance(first, last), 2);
44 }
45
46 ///////////////////////////////////////////////////////////////////////////////
47 // test3
48 // more complicated use of custom assertions to validate a date
test3()49 void test3()
50 {
51 int const days_per_month[] =
52 {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 31, 31};
53
54 mark_tag month(1), day(2);
55 // find a valid date of the form month/day/year.
56 sregex date =
57 (
58 // Month must be between 1 and 12 inclusive
59 (month= _d >> !_d) [ check(as<int>(_) >= 1
60 && as<int>(_) <= 12) ]
61 >> '/'
62 // Day must be between 1 and 31 inclusive
63 >> (day= _d >> !_d) [ check(as<int>(_) >= 1
64 && as<int>(_) <= 31) ]
65 >> '/'
66 // Only consider years between 1970 and 2038
67 >> (_d >> _d >> _d >> _d) [ check(as<int>(_) >= 1970
68 && as<int>(_) <= 2038) ]
69 )
70 // Ensure the month actually has that many days.
71 [ check( ref(days_per_month)[as<int>(month)-1] >= as<int>(day) ) ]
72 ;
73
74 smatch what;
75 std::string str("99/99/9999 2/30/2006 2/28/2006");
76
77 BOOST_REQUIRE(regex_search(str, what, date));
78 BOOST_CHECK_EQUAL(what[0], "2/28/2006");
79 }
80
81 using namespace boost::unit_test;
82
83 ///////////////////////////////////////////////////////////////////////////////
84 // init_unit_test_suite
85 //
init_unit_test_suite(int argc,char * argv[])86 test_suite* init_unit_test_suite( int argc, char* argv[] )
87 {
88 test_suite *test = BOOST_TEST_SUITE("test_assert");
89 test->add(BOOST_TEST_CASE(&test1));
90 test->add(BOOST_TEST_CASE(&test2));
91 test->add(BOOST_TEST_CASE(&test3));
92 return test;
93 }
94
95