fmt/test/module-test.cc

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2021-05-14 15:14:09 +00:00
// Formatting library for C++ - module tests
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
//
// Copyright (c) 2021 - present, Daniela Engert
// All Rights Reserved
// {fmt} module.
import fmt;
// check for macros leaking from BMI
static bool macro_leaked =
#if defined(FMT_CORE_H_) || defined(FMT_FORMAT_H)
true;
#else
false;
#endif
#include "gtest/gtest.h"
// an implicitly exported namespace must be visible [module.interface]/2.2
TEST(module_test, namespace) {
using namespace fmt;
ASSERT_TRUE(true);
}
namespace detail {
bool oops_detail_namespace_is_visible;
}
namespace fmt {
bool namespace_detail_invisible() {
#if defined(FMT_HIDE_MODULE_BUGS) && \
defined(_MSC_FULL_VER) && _MSC_FULL_VER <= 192930036
// bug in msvc 16.10-pre4:
// the namespace is visible even when it is neither
// implicitly nor explicitly exported
return true;
#else
using namespace detail;
// this fails to compile if fmt::detail is visible
return !oops_detail_namespace_is_visible;
#endif
}
} // namespace fmt
// the non-exported namespace 'detail' must be invisible [module.interface]/2
TEST(module_test, detail_namespace) {
EXPECT_TRUE(fmt::namespace_detail_invisible());
}
// macros must not be imported from a *named* module [cpp.import]/5.1
TEST(module_test, macros) {
#if defined(FMT_HIDE_MODULE_BUGS) && \
defined(_MSC_FULL_VER) && _MSC_FULL_VER <= 192930036
// bug in msvc 16.10-pre4:
// include-guard macros leak from BMI
// and even worse: they cannot be #undef-ined
macro_leaked = false;
#endif
EXPECT_FALSE(macro_leaked);
}