forked from OSchip/llvm-project
177 lines
4.0 KiB
C++
177 lines
4.0 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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// any& operator=(any const &);
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// Test value copy and move assignment.
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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 LHS, class RHS>
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void test_assign_value() {
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assert(LHS::count == 0);
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assert(RHS::count == 0);
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LHS::reset();
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RHS::reset();
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{
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any lhs(LHS(1));
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any const rhs(RHS(2));
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assert(LHS::count == 1);
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assert(RHS::count == 1);
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assert(RHS::copied == 0);
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lhs = rhs;
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assert(RHS::copied == 1);
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assert(LHS::count == 0);
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assert(RHS::count == 2);
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assertContains<RHS>(lhs, 2);
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assertContains<RHS>(rhs, 2);
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}
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assert(LHS::count == 0);
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assert(RHS::count == 0);
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LHS::reset();
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RHS::reset();
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{
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any lhs(LHS(1));
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any rhs(RHS(2));
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assert(LHS::count == 1);
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assert(RHS::count == 1);
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assert(RHS::moved == 1);
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lhs = std::move(rhs);
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assert(RHS::moved >= 1);
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assert(RHS::copied == 0);
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assert(LHS::count == 0);
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assert(RHS::count == 1);
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assertContains<RHS>(lhs, 2);
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assertEmpty<RHS>(rhs);
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}
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assert(LHS::count == 0);
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assert(RHS::count == 0);
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}
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template <class RHS>
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void test_assign_value_empty() {
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assert(RHS::count == 0);
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RHS::reset();
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{
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any lhs;
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RHS rhs(42);
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assert(RHS::count == 1);
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assert(RHS::copied == 0);
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lhs = rhs;
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assert(RHS::count == 2);
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assert(RHS::copied == 1);
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assert(RHS::moved >= 0);
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assertContains<RHS>(lhs, 42);
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}
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assert(RHS::count == 0);
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RHS::reset();
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{
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any lhs;
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RHS rhs(42);
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assert(RHS::count == 1);
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assert(RHS::moved == 0);
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lhs = std::move(rhs);
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assert(RHS::count == 2);
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assert(RHS::copied == 0);
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assert(RHS::moved >= 1);
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assertContains<RHS>(lhs, 42);
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}
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assert(RHS::count == 0);
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RHS::reset();
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}
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template <class Tp, bool Move = false>
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void test_assign_throws() {
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#if !defined(TEST_HAS_NO_EXCEPTIONS)
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auto try_throw=
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[](any& lhs, auto&& rhs) {
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try {
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Move ? lhs = std::move(rhs)
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: lhs = rhs;
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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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};
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// const lvalue to empty
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{
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any lhs;
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Tp rhs(1);
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assert(Tp::count == 1);
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try_throw(lhs, rhs);
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assert(Tp::count == 1);
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assertEmpty<Tp>(lhs);
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}
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{
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any lhs((small(2)));
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Tp rhs(1);
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assert(small::count == 1);
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assert(Tp::count == 1);
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try_throw(lhs, rhs);
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assert(small::count == 1);
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assert(Tp::count == 1);
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assertContains<small>(lhs, 2);
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}
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{
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any lhs((large(2)));
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Tp rhs(1);
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assert(large::count == 1);
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assert(Tp::count == 1);
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try_throw(lhs, rhs);
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assert(large::count == 1);
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assert(Tp::count == 1);
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assertContains<large>(lhs, 2);
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}
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#endif
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}
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int main() {
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test_assign_value<small1, small2>();
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test_assign_value<large1, large2>();
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test_assign_value<small, large>();
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test_assign_value<large, small>();
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test_assign_value_empty<small>();
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test_assign_value_empty<large>();
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test_assign_throws<small_throws_on_copy>();
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test_assign_throws<large_throws_on_copy>();
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test_assign_throws<throws_on_move, /* Move = */ true>();
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} |