Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 95 insertions, 0 deletions

diff --git a/src/boost/libs/hof/test/repeat_while.cpp b/src/boost/libs/hof/test/repeat_while.cpp
new file mode 100644
index 00000000..3b1d9fc1
--- /dev/null
+++ b/src/boost/libs/hof/test/repeat_while.cpp
@@ -0,0 +1,95 @@
+/*=============================================================================
+    Copyright (c) 2017 Paul Fultz II
+    repeat_while.cpp
+    Distributed under the Boost Software License, Version 1.0. (See accompanying
+    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+==============================================================================*/
+#include <boost/hof/repeat_while.hpp>
+#include <boost/hof/reveal.hpp>
+#include "test.hpp"
+
+// TODO: Test default construction, and static initialization
+
+struct increment_constant
+{
+    template<class T>
+    constexpr std::integral_constant<int, T::value + 1> operator()(T) const noexcept
+    {
+        return std::integral_constant<int, T::value + 1>();
+    }
+};
+
+struct increment
+{
+    template<class T>
+    constexpr T operator()(T x) const noexcept
+    {
+        return x + 1;
+    }
+};
+
+struct not_6_constant
+{
+    template<class T>
+    constexpr std::integral_constant<bool, (T::value != 6)> 
+    operator()(T) const noexcept
+    {
+        return std::integral_constant<bool, (T::value != 6)>();
+    }
+};
+
+struct not_6
+{
+    template<class T>
+    constexpr bool operator()(T x) const noexcept
+    {
+        return x != 6;
+    }
+};
+
+struct not_limit
+{
+    template<class T>
+    constexpr bool operator()(T x) const
+    {
+        return x != (BOOST_HOF_RECURSIVE_CONSTEXPR_DEPTH+4);
+    }
+};
+
+#if BOOST_HOF_HAS_NOEXCEPT_DEDUCTION
+BOOST_HOF_TEST_CASE()
+{
+    static_assert(noexcept(boost::hof::repeat_while(not_6())(increment())(1)), "noexcept repeat_while");
+    static_assert(noexcept(boost::hof::repeat_while(not_6_constant())(increment_constant())(std::integral_constant<int, 1>())), "noexcept repeat_while");
+}
+#endif
+
+BOOST_HOF_TEST_CASE()
+{
+    static_assert
+    (
+        std::is_same<
+            std::integral_constant<int, 6>, 
+            decltype(boost::hof::repeat_while(not_6_constant())(increment_constant())(std::integral_constant<int, 1>()))
+        >::value,
+        "Error"
+    );
+
+    std::integral_constant<int, 6> x = boost::hof::repeat_while(not_6_constant())(increment_constant())(std::integral_constant<int, 1>());
+    boost::hof::test::unused(x);
+}
+
+BOOST_HOF_TEST_CASE()
+{
+    BOOST_HOF_STATIC_TEST_CHECK(boost::hof::repeat_while(not_6())(increment())(1) == 6);
+    BOOST_HOF_TEST_CHECK(boost::hof::repeat_while(not_6())(increment())(1) == 6);
+    BOOST_HOF_TEST_CHECK(boost::hof::reveal(boost::hof::repeat_while(not_6())(increment()))(1) == 6);
+}
+
+BOOST_HOF_TEST_CASE()
+{
+    BOOST_HOF_TEST_CHECK(boost::hof::repeat_while(not_limit())(increment())(1) == BOOST_HOF_RECURSIVE_CONSTEXPR_DEPTH+4);
+#if BOOST_HOF_HAS_RELAXED_CONSTEXPR
+    BOOST_HOF_STATIC_TEST_CHECK(boost::hof::repeat_while(not_limit())(increment())(1) == BOOST_HOF_RECURSIVE_CONSTEXPR_DEPTH+4);
+#endif
+}