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llvm/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_move.pass.cpp 

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03

// <forward_list>

// forward_list& operator=(forward_list&& x);

#include <forward_list>
#include <cassert>
#include <iterator>

#include "test_macros.h"
#include "test_allocator.h"
#include "MoveOnly.h"
#include "min_allocator.h"

int main(int, char**)
{
    {
        typedef MoveOnly T;
        typedef test_allocator<T> A;
        typedef std::forward_list<T, A> C;
        T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        T t1[] = {10, 11, 12, 13};
        typedef std::move_iterator<T*> I;
        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
        C c1(I(std::begin(t1)), I(std::end(t1)), A(10));
        c1 = std::move(c0);
        int n = 0;
        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
            assert(*i == n);
        assert(n == 10);
        assert(c1.get_allocator() == A(10));
        assert(c0.empty());
    }
    {
        typedef MoveOnly T;
        typedef test_allocator<T> A;
        typedef std::forward_list<T, A> C;
        T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        T t1[] = {10, 11, 12, 13};
        typedef std::move_iterator<T*> I;
        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
        C c1(I(std::begin(t1)), I(std::end(t1)), A(11));
        c1 = std::move(c0);
        int n = 0;
        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
            assert(*i == n);
        assert(n == 10);
        assert(c1.get_allocator() == A(11));
        assert(!c0.empty());
    }
    {
        typedef MoveOnly T;
        typedef test_allocator<T> A;
        typedef std::forward_list<T, A> C;
        T t0[] = {10, 11, 12, 13};
        T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        typedef std::move_iterator<T*> I;
        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
        C c1(I(std::begin(t1)), I(std::end(t1)), A(10));
        c1 = std::move(c0);
        int n = 0;
        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
            assert(*i == 10+n);
        assert(n == 4);
        assert(c1.get_allocator() == A(10));
        assert(c0.empty());
    }
    {
        typedef MoveOnly T;
        typedef test_allocator<T> A;
        typedef std::forward_list<T, A> C;
        T t0[] = {10, 11, 12, 13};
        T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        typedef std::move_iterator<T*> I;
        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
        C c1(I(std::begin(t1)), I(std::end(t1)), A(11));
        c1 = std::move(c0);
        int n = 0;
        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
            assert(*i == 10+n);
        assert(n == 4);
        assert(c1.get_allocator() == A(11));
        assert(!c0.empty());
    }

    {
        typedef MoveOnly T;
        typedef other_allocator<T> A;
        typedef std::forward_list<T, A> C;
        T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        T t1[] = {10, 11, 12, 13};
        typedef std::move_iterator<T*> I;
        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
        C c1(I(std::begin(t1)), I(std::end(t1)), A(10));
        c1 = std::move(c0);
        int n = 0;
        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
            assert(*i == n);
        assert(n == 10);
        assert(c1.get_allocator() == A(10));
        assert(c0.empty());
    }
    {
        typedef MoveOnly T;
        typedef other_allocator<T> A;
        typedef std::forward_list<T, A> C;
        T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        T t1[] = {10, 11, 12, 13};
        typedef std::move_iterator<T*> I;
        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
        C c1(I(std::begin(t1)), I(std::end(t1)), A(11));
        c1 = std::move(c0);
        int n = 0;
        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
            assert(*i == n);
        assert(n == 10);
        assert(c1.get_allocator() == A(10));
        assert(c0.empty());
    }
    {
        typedef MoveOnly T;
        typedef other_allocator<T> A;
        typedef std::forward_list<T, A> C;
        T t0[] = {10, 11, 12, 13};
        T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        typedef std::move_iterator<T*> I;
        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
        C c1(I(std::begin(t1)), I(std::end(t1)), A(10));
        c1 = std::move(c0);
        int n = 0;
        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
            assert(*i == 10+n);
        assert(n == 4);
        assert(c1.get_allocator() == A(10));
        assert(c0.empty());
    }
    {
        typedef MoveOnly T;
        typedef other_allocator<T> A;
        typedef std::forward_list<T, A> C;
        T t0[] = {10, 11, 12, 13};
        T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        typedef std::move_iterator<T*> I;
        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
        C c1(I(std::begin(t1)), I(std::end(t1)), A(11));
        c1 = std::move(c0);
        int n = 0;
        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
            assert(*i == 10+n);
        assert(n == 4);
        assert(c1.get_allocator() == A(10));
        assert(c0.empty());
    }
    {
        typedef MoveOnly T;
        typedef min_allocator<T> A;
        typedef std::forward_list<T, A> C;
        T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        T t1[] = {10, 11, 12, 13};
        typedef std::move_iterator<T*> I;
        C c0(I(std::begin(t0)), I(std::end(t0)), A());
        C c1(I(std::begin(t1)), I(std::end(t1)), A());
        c1 = std::move(c0);
        int n = 0;
        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
            assert(*i == n);
        assert(n == 10);
        assert(c1.get_allocator() == A());
        assert(c0.empty());
    }
    {
        typedef MoveOnly T;
        typedef min_allocator<T> A;
        typedef std::forward_list<T, A> C;
        T t0[] = {10, 11, 12, 13};
        T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        typedef std::move_iterator<T*> I;
        C c0(I(std::begin(t0)), I(std::end(t0)), A());
        C c1(I(std::begin(t1)), I(std::end(t1)), A());
        c1 = std::move(c0);
        int n = 0;
        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
            assert(*i == 10+n);
        assert(n == 4);
        assert(c1.get_allocator() == A());
        assert(c0.empty());
    }

  return 0;
}