forked from OSchip/llvm-project
116 lines
2.8 KiB
C++
116 lines
2.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03, c++11
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// <experimental/any>
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// template <class Value> any(Value &&)
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// Test construction from a value.
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// Concerns:
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// ---------
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// 1. The value is properly move/copied depending on the value category.
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// 2. Both small and large values are properly handled.
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#include <experimental/any>
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#include <cassert>
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#include "experimental_any_helpers.h"
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#include "count_new.hpp"
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#include "test_macros.h"
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using std::experimental::any;
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using std::experimental::any_cast;
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template <class Type>
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void test_copy_value_throws()
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{
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#if !defined(TEST_HAS_NO_EXCEPTIONS)
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assert(Type::count == 0);
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{
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Type const t(42);
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assert(Type::count == 1);
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try {
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any const a2(t);
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assert(false);
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} catch (my_any_exception const &) {
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// do nothing
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} catch (...) {
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assert(false);
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}
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assert(Type::count == 1);
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assert(t.value == 42);
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}
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assert(Type::count == 0);
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#endif
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}
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void test_move_value_throws()
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{
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#if !defined(TEST_HAS_NO_EXCEPTIONS)
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assert(throws_on_move::count == 0);
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{
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throws_on_move v;
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assert(throws_on_move::count == 1);
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try {
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any const a(std::move(v));
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assert(false);
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} catch (my_any_exception const &) {
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// do nothing
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} catch (...) {
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assert(false);
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}
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assert(throws_on_move::count == 1);
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}
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assert(throws_on_move::count == 0);
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#endif
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}
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template <class Type>
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void test_copy_move_value() {
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// constructing from a small type should perform no allocations.
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DisableAllocationGuard g(isSmallType<Type>()); ((void)g);
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assert(Type::count == 0);
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Type::reset();
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{
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Type t(42);
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assert(Type::count == 1);
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any a(t);
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assert(Type::count == 2);
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assert(Type::copied == 1);
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assert(Type::moved == 0);
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assertContains<Type>(a, 42);
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}
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assert(Type::count == 0);
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Type::reset();
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{
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Type t(42);
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assert(Type::count == 1);
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any a(std::move(t));
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assert(Type::count == 2);
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assert(Type::copied == 0);
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assert(Type::moved == 1);
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assertContains<Type>(a, 42);
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}
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}
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int main() {
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test_copy_move_value<small>();
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test_copy_move_value<large>();
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test_copy_value_throws<small_throws_on_copy>();
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test_copy_value_throws<large_throws_on_copy>();
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test_move_value_throws();
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} |