import quincy beta 17.1.0

[ceph.git] / ceph / src / boost / libs / leaf / test / capture_result_state_test.cpp

diff --git a/ceph/src/boost/libs/leaf/test/capture_result_state_test.cpp b/ceph/src/boost/libs/leaf/test/capture_result_state_test.cpp
new file mode 100644 (file)
index 0000000..be8b132
--- /dev/null
+++ b/ceph/src/boost/libs/leaf/test/capture_result_state_test.cpp
@@ -0,0 +1,66 @@
+// Copyright (c) 2018-2020 Emil Dotchevski and Reverge Studios, Inc.
+
+// 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/leaf/capture.hpp>
+#include <boost/leaf/result.hpp>
+#include <boost/leaf/handle_errors.hpp>
+#include "lightweight_test.hpp"
+
+namespace leaf = boost::leaf;
+
+int count = 0;
+
+template <int>
+struct info
+{
+    info() noexcept
+    {
+        ++count;
+    }
+
+    info( info const & ) noexcept
+    {
+        ++count;
+    }
+
+    ~info() noexcept
+    {
+        --count;
+    }
+};
+
+int main()
+{
+    auto error_handlers = std::make_tuple(
+        []( info<1>, info<3> )
+        {
+            return 42;
+        },
+        []
+        {
+            return -42;
+        } );
+
+    {
+        auto r = leaf::capture(
+            leaf::make_shared_context(error_handlers),
+            []() -> leaf::result<int>
+            {
+                return leaf::new_error( info<1>{}, info<3>{} );
+            } );
+        BOOST_TEST_EQ(count, 2);
+
+        int answer = leaf::try_handle_all(
+            [&r]
+            {
+                return std::move(r);
+            },
+            error_handlers);
+        BOOST_TEST_EQ(answer, 42);
+    }
+    BOOST_TEST_EQ(count, 0);
+
+    return boost::report_errors();
+}