1// Copyright 2020 Peter Dimov
2// Distributed under the Boost Software License, Version 1.0.
3// https://www.boost.org/LICENSE_1_0.txt
4
5#if defined(_MSC_VER) && _MSC_VER == 1900
6# pragma warning(disable: 4552) // '<<': operator has no effect; expected operator with side-effect
7#endif
8
9#include <boost/lambda2.hpp>
10#include <boost/core/lightweight_test.hpp>
11
12#define TEST_UNARY(Op) \
13 BOOST_TEST_EQ( (Op _1)( 0 ), Op 0 ); \
14 BOOST_TEST_EQ( (Op _1)( 1 ), Op 1 ); \
15 BOOST_TEST_EQ( (Op _1)( 5 ), Op 5 ); \
16 BOOST_TEST_EQ( (Op (Op _1))( 5 ), Op (Op 5) ); \
17 BOOST_TEST_EQ( ((Op _1) + (Op _2))( 1, 2 ), (Op 1) + (Op 2) ); \
18 BOOST_TEST_EQ( ((Op _1) && (Op _2))( 1, 2 ), (Op 1) && (Op 2) );
19
20#define TEST_BINARY(Op) \
21 BOOST_TEST_EQ( (_1 Op _2)( 0, 1 ), 0 Op 1 ); \
22 BOOST_TEST_EQ( (_1 Op _2)( 3, 5 ), 3 Op 5 ); \
23 BOOST_TEST_EQ( (_1 Op 2)( 1, 2 ), 1 Op 2 ); \
24 BOOST_TEST_EQ( (1 Op _2)( 1, 2 ), 1 Op 2 ); \
25 BOOST_TEST_EQ( ((_1 Op _2) + (_3 Op _4))( 1, 2, 3, 4 ), (1 Op 2) + (3 Op 4) );
26
27int main()
28{
29 using namespace boost::lambda2;
30
31 TEST_BINARY(+)
32 TEST_BINARY(-)
33 TEST_BINARY(*)
34 TEST_BINARY(/)
35 TEST_BINARY(%)
36 TEST_UNARY(-)
37
38 TEST_BINARY(==)
39 TEST_BINARY(!=)
40 TEST_BINARY(>)
41 TEST_BINARY(<)
42 TEST_BINARY(>=)
43 TEST_BINARY(<=)
44
45 TEST_BINARY(&&)
46 TEST_BINARY(||)
47 TEST_UNARY(!)
48
49 TEST_BINARY(&)
50 TEST_BINARY(|)
51 TEST_BINARY(^)
52 TEST_UNARY(~)
53
54#if defined(_MSC_VER) && _MSC_VER == 1900 && !defined(_DEBUG)
55
56 // prevents crash in TEST_BINARY(/)
57 // no idea why
58
59 BOOST_TEST_EQ( (_1 / _2)( 0, 1 ), 0 / 1 );
60
61#endif
62
63 TEST_BINARY(<<)
64 TEST_BINARY(>>)
65
66 TEST_UNARY(+)
67
68 return boost::report_errors();
69}
70

source code of boost/libs/lambda2/test/lambda2_test.cpp