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Document BOOST_TEST_TRAIT_SAME

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Peter Dimov
2019-02-06 18:12:25 +02:00
parent 7f96d56eff
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doc/lightweight_test.qbk
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@ -1,7 +1,7 @@
[/
Copyright 2010, 2011 Beman Dawes
Copyright 2013 Ion Gaztanaga
Copyright 2014, 2017 Peter Dimov
Copyright 2014-2019 Peter Dimov
Copyright 2017 Kohei Takahashi
Distributed under the Boost Software License, Version 1.0.
@ -253,6 +253,7 @@ return a boolean value.
``
#define BOOST_TEST_TRAIT_TRUE((Trait)) /*unspecified*/
#define BOOST_TEST_TRAIT_FALSE((Trait)) /*unspecified*/
#define BOOST_TEST_TRAIT_SAME(Type1, Type2) /*unspecified*/
``
[endsect]
@ -280,6 +281,20 @@ message containing `Trait`. Note the double set of parentheses.
[endsect]
[section BOOST_TEST_TRAIT_SAME]
``
BOOST_TEST_TRAIT_SAME(Type1, Type2)
``
If the two types are not the same, increases the error count and outputs a
message containing them. This macro requires that the compiler supports
variadic macros and `__VA_ARGS__`. (Note that unlike `BOOST_TEST_TRAIT_TRUE`
and `BOOST_TEST_TRAIT_FALSE`, this macro only requires a single set of
parentheses.)
[endsect]
[section Example]
``
@ -297,6 +312,8 @@ int main()
{
BOOST_TEST_TRAIT_TRUE(( is_same<X<int, long>::type, int> ));
BOOST_TEST_TRAIT_SAME( X<int, long>::type, int );
return boost::report_errors();
}
``