1 files changed, 59 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/string/cnstr.c_str.cpp b/src/boost/libs/hana/test/string/cnstr.c_str.cpp
new file mode 100644
index 000000000..e118f04f2
--- /dev/null
+++ b/src/boost/libs/hana/test/string/cnstr.c_str.cpp
@@ -0,0 +1,59 @@
+// Copyright Louis Dionne 2013-2017
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include <boost/hana/assert.hpp>
+#include <boost/hana/core/to.hpp>
+#include <boost/hana/equal.hpp>
+#include <boost/hana/ext/std/integral_constant.hpp>
+#include <boost/hana/integral_constant.hpp>
+#include <boost/hana/string.hpp>
+
+#include <type_traits>
+namespace hana = boost::hana;
+
+
+constexpr char const empty[] = "";
+constexpr char const a[] = "a";
+constexpr char const ab[] = "ab";
+constexpr char const abc[] = "abc";
+constexpr char const abcd[] = "abcd";
+
+int main() {
+    {
+        auto string = hana::to<hana::string_tag>(hana::integral_constant<char const*, empty>{});
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(string, hana::string_c<>));
+    }
+
+    {
+        auto string = hana::to<hana::string_tag>(hana::integral_constant<char const*, a>{});
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(string, hana::string_c<'a'>));
+    }
+
+    {
+        auto string = hana::to<hana::string_tag>(hana::integral_constant<char const*, ab>{});
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(string, hana::string_c<'a', 'b'>));
+    }
+
+    {
+        auto string = hana::to<hana::string_tag>(hana::integral_constant<char const*, abc>{});
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(string, hana::string_c<'a', 'b', 'c'>));
+    }
+
+    {
+        auto string = hana::to<hana::string_tag>(hana::integral_constant<char const*, abcd>{});
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(string, hana::string_c<'a', 'b', 'c', 'd'>));
+    }
+
+    // Make sure it also works with std::integral_constant, for example
+    {
+        auto string = hana::to<hana::string_tag>(std::integral_constant<char const*, abcd>{});
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(string, hana::string_c<'a', 'b', 'c', 'd'>));
+    }
+
+    // Make sure the `to_string` shortcut works
+    {
+        auto string = hana::to_string(hana::integral_constant<char const*, abcd>{});
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(string, hana::string_c<'a', 'b', 'c', 'd'>));
+    }
+}