diff options
Diffstat (limited to 'test/std/utilities/optional/optional.relops/less_equal.pass.cpp')
-rw-r--r-- | test/std/utilities/optional/optional.relops/less_equal.pass.cpp | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/test/std/utilities/optional/optional.relops/less_equal.pass.cpp b/test/std/utilities/optional/optional.relops/less_equal.pass.cpp new file mode 100644 index 000000000000..a7d594dd34a2 --- /dev/null +++ b/test/std/utilities/optional/optional.relops/less_equal.pass.cpp @@ -0,0 +1,70 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// UNSUPPORTED: c++98, c++03, c++11, c++14 +// <optional> + +// template <class T> constexpr bool operator<= (const optional<T>& x, const optional<T>& y); + +#include <optional> + +using std::optional; + +struct X +{ + int i_; + + constexpr X(int i) : i_(i) {} +}; + +constexpr bool operator <= ( const X &lhs, const X &rhs ) + { return lhs.i_ <= rhs.i_ ; } + +int main() +{ + { + typedef optional<X> O; + + constexpr O o1; // disengaged + constexpr O o2; // disengaged + constexpr O o3{1}; // engaged + constexpr O o4{2}; // engaged + constexpr O o5{1}; // engaged + + static_assert ( (o1 <= o1), "" ); + static_assert ( (o1 <= o2), "" ); + static_assert ( (o1 <= o3), "" ); + static_assert ( (o1 <= o4), "" ); + static_assert ( (o1 <= o5), "" ); + + static_assert ( (o2 <= o1), "" ); + static_assert ( (o2 <= o2), "" ); + static_assert ( (o2 <= o3), "" ); + static_assert ( (o2 <= o4), "" ); + static_assert ( (o2 <= o5), "" ); + + static_assert ( !(o3 <= o1), "" ); + static_assert ( !(o3 <= o2), "" ); + static_assert ( (o3 <= o3), "" ); + static_assert ( (o3 <= o4), "" ); + static_assert ( (o3 <= o5), "" ); + + static_assert ( !(o4 <= o1), "" ); + static_assert ( !(o4 <= o2), "" ); + static_assert ( !(o4 <= o3), "" ); + static_assert ( (o4 <= o4), "" ); + static_assert ( !(o4 <= o5), "" ); + + static_assert ( !(o5 <= o1), "" ); + static_assert ( !(o5 <= o2), "" ); + static_assert ( (o5 <= o3), "" ); + static_assert ( (o5 <= o4), "" ); + static_assert ( (o5 <= o5), "" ); + } +} |