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119 lines
3.2 KiB
C++
119 lines
3.2 KiB
C++
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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// test_variant.cpp
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// test of non-intrusive serialization of variant types
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//
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// copyright (c) 2005
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// troy d. straszheim <troy@resophonic.com>
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// http://www.resophonic.com
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//
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org for updates, documentation, and revision history.
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//
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// thanks to Robert Ramey and Peter Dimov.
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//
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#include <fstream>
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#include <cstdio> // remove
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#include <boost/config.hpp>
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#if defined(BOOST_NO_STDC_NAMESPACE)
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namespace std{
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using ::remove;
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}
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#endif
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#include <boost/test/floating_point_comparison.hpp>
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#include "test_tools.hpp"
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#include <boost/preprocessor/stringize.hpp>
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#include BOOST_PP_STRINGIZE(BOOST_ARCHIVE_TEST)
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#include <boost/serialization/nvp.hpp>
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#include "throw_exception.hpp"
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#include <boost/archive/archive_exception.hpp>
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#include "A.hpp"
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#include <boost/serialization/variant.hpp>
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#include <iostream>
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template <class T>
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void test_type(const T& gets_written){
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const char * testfile = boost::archive::tmpnam(NULL);
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BOOST_REQUIRE(testfile != NULL);
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{
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test_ostream os(testfile, TEST_STREAM_FLAGS);
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test_oarchive oa(os);
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oa << boost::serialization::make_nvp("written", gets_written);
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}
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T got_read;
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{
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test_istream is(testfile, TEST_STREAM_FLAGS);
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test_iarchive ia(is);
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ia >> boost::serialization::make_nvp("written", got_read);
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}
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BOOST_CHECK_EQUAL(gets_written, got_read);
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std::remove(testfile);
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}
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//
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// this verifies that if you try to read in a variant from a file
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// whose "which" is illegal for the one in memory (that is, you're
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// reading in to a different variant than you wrote out to) the load()
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// operation will throw. One could concievably add checking for
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// sequence length as well, but this would add size to the archive for
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// dubious benefit.
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//
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void do_bad_read()
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{
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boost::variant<bool, float, int, std::string> big_variant;
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big_variant = std::string("adrenochrome");
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const char * testfile = boost::archive::tmpnam(NULL);
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BOOST_REQUIRE(testfile != NULL);
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{
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test_ostream os(testfile, TEST_STREAM_FLAGS);
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test_oarchive oa(os);
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oa << BOOST_SERIALIZATION_NVP(big_variant);
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}
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boost::variant<bool, float, int> little_variant;
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{
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test_istream is(testfile, TEST_STREAM_FLAGS);
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test_iarchive ia(is);
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bool exception_invoked = false;
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BOOST_TRY {
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ia >> BOOST_SERIALIZATION_NVP(little_variant);
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} BOOST_CATCH (boost::archive::archive_exception e) {
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BOOST_CHECK(boost::archive::archive_exception::stream_error == e.code);
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exception_invoked = true;
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}
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BOOST_CHECK(exception_invoked);
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}
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}
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int test_main( int /* argc */, char* /* argv */[] )
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{
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{
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boost::variant<bool, int, float, double, A, std::string> v;
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v = false;
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test_type(v);
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v = 1;
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test_type(v);
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v = (float) 2.3;
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test_type(v);
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v = (double) 6.4;
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test_type(v);
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v = std::string("we can't stop here, this is Bat Country");
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test_type(v);
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v = A();
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test_type(v);
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}
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do_bad_read();
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return EXIT_SUCCESS;
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}
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// EOF
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