1 files changed, 53 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/assert/constant.cpp b/src/boost/libs/hana/test/assert/constant.cpp
new file mode 100644
index 00000000..3eca58c1
--- /dev/null
+++ b/src/boost/libs/hana/test/assert/constant.cpp
@@ -0,0 +1,53 @@
+// 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 <support/cnumeric.hpp>
+namespace hana = boost::hana;
+
+
+template <bool value>
+auto constant_bool() { return make_cnumeric<bool, value>(); }
+
+template <bool value>
+constexpr auto constexpr_constant_bool() { return make_cnumeric<bool, value>(); }
+
+
+// Make sure it works at global scope
+BOOST_HANA_CONSTANT_ASSERT(constant_bool<true>());
+BOOST_HANA_CONSTANT_ASSERT_MSG(constant_bool<true>(), "message");
+
+// Make sure it works at namespace scope
+namespace ns {
+    BOOST_HANA_CONSTANT_ASSERT(constant_bool<true>());
+    BOOST_HANA_CONSTANT_ASSERT_MSG(constant_bool<true>(), "message");
+}
+
+// Make sure it works in a constexpr context
+constexpr bool constexpr_context() {
+    BOOST_HANA_CONSTANT_ASSERT(constexpr_constant_bool<true>());
+    BOOST_HANA_CONSTANT_ASSERT_MSG(constexpr_constant_bool<true>(), "message");
+    return true;
+}
+static_assert(constexpr_context(), "");
+
+
+int main() {
+    // Make sure it works at function scope
+    BOOST_HANA_CONSTANT_ASSERT(constant_bool<true>());
+    BOOST_HANA_CONSTANT_ASSERT_MSG(constant_bool<true>(), "message");
+
+    // Make sure it works inside a lambda
+    auto lambda = []{
+        BOOST_HANA_CONSTANT_ASSERT(constant_bool<true>());
+        BOOST_HANA_CONSTANT_ASSERT_MSG(constant_bool<true>(), "message");
+    };
+    lambda();
+
+    // Make sure we can reference a local variable
+    auto yes = constant_bool<true>();
+    BOOST_HANA_CONSTANT_ASSERT(yes);
+    BOOST_HANA_CONSTANT_ASSERT_MSG(yes, "message");
+}