--- /dev/null
+// 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/detail/config.hpp>
+#ifdef BOOST_LEAF_NO_EXCEPTIONS
+
+#include <iostream>
+
+int main()
+{
+ std::cout << "Unit test not applicable." << std::endl;
+ return 0;
+}
+
+#else
+
+#include <boost/leaf/handle_errors.hpp>
+#include <boost/leaf/pred.hpp>
+#include <boost/leaf/result.hpp>
+#include "lightweight_test.hpp"
+
+namespace leaf = boost::leaf;
+
+template <int> struct info { int value; };
+
+struct my_exception: std::exception
+{
+ int value;
+
+ my_exception():
+ value(0)
+ {
+ }
+
+ my_exception(int v):
+ value(v)
+ {
+ }
+};
+
+int main()
+{
+ {
+ leaf::result<int> r = leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ return 42;
+ },
+ []
+ {
+ return 1;
+ } );
+ BOOST_TEST(r);
+ BOOST_TEST_EQ(r.value(), 42);
+ }
+ {
+ leaf::result<int> r = leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ throw leaf::exception( my_exception(), info<1>{1} );
+ },
+ []( my_exception const &, info<1> const & x )
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ return 1;
+ } );
+ BOOST_TEST(r);
+ BOOST_TEST_EQ(r.value(), 1);
+ }
+ {
+ leaf::result<int> r = leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ throw leaf::exception( info<1>{1} );
+ },
+ []( info<1> const & x )
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ return 1;
+ } );
+ BOOST_TEST(r);
+ BOOST_TEST_EQ(r.value(), 1);
+ }
+ {
+ leaf::result<int> r = leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ return leaf::new_error( info<1>{1} );
+ },
+ []( info<1> const & x )
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ return 1;
+ } );
+ BOOST_TEST(r);
+ BOOST_TEST_EQ(r.value(), 1);
+ }
+
+ ///////////////////////////
+
+ {
+ auto error_handlers = std::make_tuple(
+ []( my_exception const &, info<1> const & x ) -> leaf::result<int>
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ return 1;
+ },
+ []( info<1> const & x ) -> leaf::result<int>
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ return 2;
+ } );
+ {
+ leaf::result<int> r = leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ return 42;
+ },
+ error_handlers );
+ BOOST_TEST(r);
+ BOOST_TEST_EQ(r.value(), 42);
+ }
+ {
+ leaf::result<int> r = leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ throw leaf::exception( my_exception(), info<1>{1} );
+ },
+ error_handlers );
+ BOOST_TEST(r);
+ BOOST_TEST_EQ(r.value(), 1);
+ }
+ {
+ leaf::result<int> r = leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ throw leaf::exception( info<1>{1} );
+ },
+ error_handlers );
+ BOOST_TEST(r);
+ BOOST_TEST_EQ(r.value(), 2);
+ }
+ {
+ leaf::result<int> r = leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ return leaf::new_error( info<1>{1} );
+ },
+ error_handlers );
+ BOOST_TEST(r);
+ BOOST_TEST_EQ(r.value(), 2);
+ }
+ }
+
+ ///////////////////////////
+
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ return 42;
+ },
+ []
+ {
+ return 1;
+ } );
+ BOOST_TEST_EQ(r, 42);
+ }
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ throw leaf::exception( my_exception(), info<1>{1} );
+ },
+ []( my_exception const &, info<1> const & x )
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ return 1;
+ },
+ []
+ {
+ return 2;
+ } );
+ BOOST_TEST_EQ(r, 1);
+ }
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ throw leaf::exception( info<1>{1} );
+ },
+ []( info<1> const & x )
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ return 1;
+ },
+ []
+ {
+ return 2;
+ } );
+ BOOST_TEST_EQ(r, 1);
+ }
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ return leaf::new_error( info<1>{1} );
+ },
+ []( info<1> const & x )
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ return 1;
+ },
+ []
+ {
+ return 2;
+ } );
+ BOOST_TEST_EQ(r, 1);
+ }
+
+ ///////////////////////////
+
+ {
+ auto error_handlers = std::make_tuple(
+ []( my_exception const &, info<1> const & x )
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ return 1;
+ },
+ []( info<1> const & x )
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ return 2;
+ },
+ []
+ {
+ return 1;
+ } );
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ return 42;
+ },
+ error_handlers );
+ BOOST_TEST_EQ(r, 42);
+ }
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ throw leaf::exception( my_exception(), info<1>{1} );
+ },
+ error_handlers );
+ BOOST_TEST_EQ(r, 1);
+ }
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ throw leaf::exception( info<1>{1} );
+ },
+ error_handlers );
+ BOOST_TEST_EQ(r, 2);
+ }
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ return leaf::new_error( info<1>{1} );
+ },
+ error_handlers );
+ BOOST_TEST_EQ(r, 2);
+ }
+ }
+
+ ///////////////////////////
+
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ return leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ return leaf::new_error( info<1>{1} );
+ },
+ []( info<1> const & ) -> int
+ {
+ BOOST_LEAF_THROW_EXCEPTION(my_exception());
+ },
+ []
+ {
+ return 1;
+ } );
+ },
+ []( my_exception const &, info<1> )
+ {
+ return 2;
+ },
+ []( my_exception const & )
+ {
+ return 3;
+ },
+ []
+ {
+ return 4;
+ } );
+
+ BOOST_TEST_EQ(r, 3);
+ }
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ return leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ return leaf::new_error( info<1>{1} );
+ },
+ []( info<1> const & x ) -> int
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ BOOST_LEAF_THROW_EXCEPTION();
+ },
+ []
+ {
+ return 1;
+ } );
+ },
+ []( my_exception const &, info<1> )
+ {
+ return 2;
+ },
+ []( my_exception const & )
+ {
+ return 3;
+ },
+ []
+ {
+ return 4;
+ } );
+
+ BOOST_TEST_EQ(r, 4);
+ }
+
+ ///////////////////////////
+
+ {
+ auto error_handlers = std::make_tuple(
+ []( info<1> const & x ) -> int
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ BOOST_LEAF_THROW_EXCEPTION(my_exception());
+ },
+ []
+ {
+ return 1;
+ } );
+ int r = leaf::try_handle_all(
+ [&]() -> leaf::result<int>
+ {
+ return leaf::try_handle_all(
+ [&]() -> leaf::result<int>
+ {
+ return leaf::new_error( info<1>{1} );
+ },
+ error_handlers );
+ },
+ []( my_exception const &, info<1> )
+ {
+ return 2;
+ },
+ []( my_exception const & )
+ {
+ return 3;
+ },
+ []
+ {
+ return 4;
+ } );
+
+ BOOST_TEST_EQ(r, 3);
+ }
+ {
+ auto error_handlers = std::make_tuple(
+ []( info<1> const & x ) -> int
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ BOOST_LEAF_THROW_EXCEPTION();
+ },
+ []
+ {
+ return 1;
+ } );
+ int r = leaf::try_handle_all(
+ [&]() -> leaf::result<int>
+ {
+ return leaf::try_handle_all(
+ [&]() -> leaf::result<int>
+ {
+ return leaf::new_error( info<1>{1} );
+ },
+ error_handlers );
+ },
+ []( my_exception const &, info<1> )
+ {
+ return 2;
+ },
+ []( my_exception const & )
+ {
+ return 3;
+ },
+ []
+ {
+ return 4;
+ } );
+
+ BOOST_TEST_EQ(r, 4);
+ }
+
+ ///////////////////////////
+
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ return leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ return leaf::new_error( info<1>{1} );
+ },
+ []( info<1> const & x ) -> int
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ BOOST_LEAF_THROW_EXCEPTION(my_exception());
+ },
+ []
+ {
+ return 1;
+ } );
+ },
+ []( my_exception const &, info<1> )
+ {
+ return 3;
+ },
+ []( my_exception const & )
+ {
+ return 4;
+ },
+ []
+ {
+ return 5;
+ } );
+
+ BOOST_TEST_EQ(r, 4);
+ }
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ return leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ return leaf::new_error( info<1>{1} );
+ },
+ []( info<1> const & x ) -> int
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ BOOST_LEAF_THROW_EXCEPTION();
+ },
+ []
+ {
+ return 1;
+ } );
+ },
+ []( my_exception const &, info<1> )
+ {
+ return 3;
+ },
+ []( my_exception const & )
+ {
+ return 4;
+ },
+ []
+ {
+ return 5;
+ } );
+
+ BOOST_TEST_EQ(r, 5);
+ }
+
+ ///////////////////////////
+
+ {
+ auto error_handlers = std::make_tuple(
+ []( info<1> const & x ) -> leaf::result<int>
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ BOOST_LEAF_THROW_EXCEPTION(my_exception());
+ },
+ []() -> leaf::result<int>
+ {
+ return 1;
+ } );
+ int r = leaf::try_handle_all(
+ [&]() -> leaf::result<int>
+ {
+ return leaf::try_handle_some(
+ [&]() -> leaf::result<int>
+ {
+ return leaf::new_error( info<1>{1} );
+ },
+ error_handlers );
+ },
+ []( my_exception const &, info<1> )
+ {
+ return 3;
+ },
+ []( my_exception const & )
+ {
+ return 4;
+ },
+ []
+ {
+ return 5;
+ } );
+
+ BOOST_TEST_EQ(r, 4);
+ }
+ {
+ auto error_handlers = std::make_tuple(
+ []( info<1> const & x ) -> leaf::result<int>
+ {
+ BOOST_TEST_EQ(x.value, 1);
+ BOOST_LEAF_THROW_EXCEPTION();
+ },
+ []() -> leaf::result<int>
+ {
+ return 1;
+ } );
+ int r = leaf::try_handle_all(
+ [&]() -> leaf::result<int>
+ {
+ return leaf::try_handle_some(
+ [&]() -> leaf::result<int>
+ {
+ return leaf::new_error( info<1>{1} );
+ },
+ error_handlers );
+ },
+ []( my_exception const &, info<1> )
+ {
+ return 3;
+ },
+ []( my_exception const & )
+ {
+ return 4;
+ },
+ []
+ {
+ return 5;
+ } );
+
+ BOOST_TEST_EQ(r, 5);
+ }
+
+ //////////////////////////////////////
+
+ // match_value<> with exceptions, try_handle_some
+ {
+ leaf::result<int> r = leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ throw leaf::exception( my_exception(42) );
+ },
+ []( leaf::match_value<my_exception, 42> m )
+ {
+ return m.matched.value;
+ } );
+ BOOST_TEST(r);
+ BOOST_TEST_EQ(r.value(), 42);
+ }
+ {
+ leaf::result<int> r = leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ throw my_exception(42);
+ },
+ []( leaf::match_value<my_exception, 42> m )
+ {
+ return m.matched.value;
+ } );
+ BOOST_TEST(r);
+ BOOST_TEST_EQ(r.value(), 42);
+ }
+ {
+ leaf::result<int> r = leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ throw leaf::exception( my_exception(42) );
+ },
+ []( leaf::match_value<my_exception, 41> m )
+ {
+ return m.matched.value;
+ },
+ []( leaf::error_info const & unmatched )
+ {
+ return unmatched.error();
+ } );
+ BOOST_TEST(!r);
+ }
+ {
+ leaf::result<int> r = leaf::try_handle_some(
+ []() -> leaf::result<int>
+ {
+ throw my_exception(42);
+ },
+ []( leaf::match_value<my_exception, 41> m )
+ {
+ return m.matched.value;
+ },
+ []( leaf::error_info const & unmatched )
+ {
+ return unmatched.error();
+ } );
+ BOOST_TEST(!r);
+ }
+
+ //////////////////////////////////////
+
+ // match_value<> with exceptions, try_handle_all
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ throw leaf::exception( my_exception(42) );
+ },
+ []( leaf::match_value<my_exception, 42> m )
+ {
+ return m.matched.value;
+ },
+ []
+ {
+ return -1;
+ } );
+ BOOST_TEST_EQ(r, 42);
+ }
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ throw my_exception(42);
+ },
+ []( leaf::match_value<my_exception, 42> m )
+ {
+ return m.matched.value;
+ },
+ []
+ {
+ return -1;
+ } );
+ BOOST_TEST_EQ(r, 42);
+ }
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ throw leaf::exception( my_exception(42) );
+ },
+ []( leaf::match_value<my_exception, 41> m )
+ {
+ return m.matched.value;
+ },
+ []
+ {
+ return -1;
+ } );
+ BOOST_TEST_EQ(r, -1);
+ }
+ {
+ int r = leaf::try_handle_all(
+ []() -> leaf::result<int>
+ {
+ throw my_exception(42);
+ },
+ []( leaf::match_value<my_exception, 41> m )
+ {
+ return m.matched.value;
+ },
+ []
+ {
+ return -1;
+ } );
+ BOOST_TEST_EQ(r, -1);
+ }
+
+ return boost::report_errors();
+}
+
+#endif
projects / ceph.git / blobdiff