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git.proxmox.com Git - ceph.git/blob - ceph/src/boost/libs/contract/test/call_if/true_.cpp
2 // Copyright (C) 2008-2018 Lorenzo Caminiti
3 // Distributed under the Boost Software License, Version 1.0 (see accompanying
4 // file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
5 // See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
7 // Test call_if with true condition and non-void result type.
9 #include "../detail/oteststream.hpp"
10 #include <boost/contract/call_if.hpp>
11 #include <boost/bind.hpp>
12 #include <boost/type_traits/has_equal_to.hpp>
13 #include <boost/detail/lightweight_test.hpp>
17 boost::contract::test::detail::oteststream out
;
20 typedef bool result_type
; // Test non-void result type.
22 template<typename L
, typename R
>
23 result_type
operator()(L left
, R right
) const {
24 return left
== right
; // Requires operator==.
28 struct x
{}; // Doest not have operator==.
31 std::ostringstream ok
;
33 out
<< std::boolalpha
;
38 boost::contract::call_if
<boost::has_equal_to
<int> >(
39 boost::bind(eq(), 123, 456) // False.
40 ) // Test no else (not called).
42 ok
.str(""); ok
<< false << std::endl
;
43 BOOST_TEST(out
.eq(ok
.str()));
47 boost::contract::call_if
<boost::has_equal_to
<int> >(
48 boost::bind(eq(), 123, 123) // True.
49 ).else_([] { return false; }) // Test else not called.
51 ok
.str(""); ok
<< true << std::endl
;
52 BOOST_TEST(out
.eq(ok
.str()));
55 out
<< // Test "..._c".
56 boost::contract::call_if_c
<boost::has_equal_to
<int>::value
>(
57 boost::bind(eq(), 123, 123) // True.
58 ).else_( // Test else not called.
59 boost::bind(eq(), x1
, x2
) // Compiler-error... but not called.
62 ok
.str(""); ok
<< true << std::endl
;
63 BOOST_TEST(out
.eq(ok
.str()));
65 return boost::report_errors();