import quincy beta 17.1.0

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

diff --git a/ceph/src/boost/libs/leaf/test/defer_nested_new_error_result_test.cpp b/ceph/src/boost/libs/leaf/test/defer_nested_new_error_result_test.cpp
new file mode 100644 (file)
index 0000000..232eecb
--- /dev/null
+++ b/ceph/src/boost/libs/leaf/test/defer_nested_new_error_result_test.cpp
@@ -0,0 +1,59 @@
+// 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/on_error.hpp>
+#include <boost/leaf/handle_errors.hpp>
+#include <boost/leaf/result.hpp>
+#include "lightweight_test.hpp"
+
+namespace leaf = boost::leaf;
+
+template <int A>
+struct info
+{
+    int value;
+};
+
+leaf::error_id f0()
+{
+    auto load = leaf::on_error( [] { return info<0>{-1}; } );
+    return leaf::new_error( info<1>{-1} );
+}
+
+leaf::error_id f1()
+{
+    auto load = leaf::on_error( [] { return info<0>{0}; }, [] { return info<1>{1}; }, [] { return info<2>{2}; } );
+    (void) f0();
+    return leaf::new_error();
+}
+
+leaf::error_id f2()
+{
+    return f1().load( info<3>{3} );
+}
+
+int main()
+{
+    int r = leaf::try_handle_all(
+        []() -> leaf::result<int>
+        {
+            return f2();
+        },
+        []( info<0> i0, info<1> i1, info<2> i2, info<3> i3 )
+        {
+            BOOST_TEST_EQ(i0.value, 0);
+            BOOST_TEST_EQ(i1.value, 1);
+            BOOST_TEST_EQ(i2.value, 2);
+            BOOST_TEST_EQ(i3.value, 3);
+            return 1;
+        },
+        []
+        {
+            return 2;
+        } );
+    BOOST_TEST_EQ(r, 1);
+
+    return boost::report_errors();
+}