1 files changed, 47 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/detail/first_unsatisfied_index.cpp b/src/boost/libs/hana/test/detail/first_unsatisfied_index.cpp
new file mode 100644
index 000000000..dd2eff55d
--- /dev/null
+++ b/src/boost/libs/hana/test/detail/first_unsatisfied_index.cpp
@@ -0,0 +1,47 @@
+// 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/detail/first_unsatisfied_index.hpp>
+
+#include <boost/hana/not_equal.hpp>
+#include <laws/base.hpp>
+
+#include <type_traits>
+namespace hana = boost::hana;
+using hana::test::ct_eq;
+
+
+struct poison {
+    poison() = default;
+    poison(poison const&) = delete;
+};
+
+int main() {
+    auto predicate = [](auto x) {
+        static_assert(!std::is_same<poison, decltype(x)>::value, "");
+        return hana::not_equal(x, ct_eq<9>{});
+    };
+
+    using Find = hana::detail::first_unsatisfied_index<decltype(predicate)>;
+
+    static_assert(decltype(Find{}())::value == 0, "");
+
+    static_assert(decltype(Find{}(ct_eq<9>{}))::value == 0, "");
+    static_assert(decltype(Find{}(ct_eq<0>{}))::value == 1, "");
+
+    static_assert(decltype(Find{}(ct_eq<9>{}, poison{}))::value == 0, "");
+    static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<9>{}))::value == 1, "");
+    static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<1>{}))::value == 2, "");
+
+    static_assert(decltype(Find{}(ct_eq<9>{}, poison{}, poison{}))::value == 0, "");
+    static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<9>{}, poison{}))::value == 1, "");
+    static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<1>{}, ct_eq<9>{}))::value == 2, "");
+    static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}))::value == 3, "");
+
+    static_assert(decltype(Find{}(ct_eq<9>{}, poison{}, poison{}, poison{}))::value == 0, "");
+    static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<9>{}, poison{}, poison{}))::value == 1, "");
+    static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<1>{}, ct_eq<9>{}, poison{}))::value == 2, "");
+    static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<9>{}))::value == 3, "");
+    static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}))::value == 4, "");
+}