GSL/tests/bounds_tests.cpp

///////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2015 Microsoft Corporation. All rights reserved.
//
// This code is licensed under the MIT License (MIT).
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
///////////////////////////////////////////////////////////////////////////////

#include <UnitTest++/UnitTest++.h>

#include <gsl/multi_span>

#include <vector>

using namespace std;
using namespace gsl;

namespace
{
void use(std::ptrdiff_t&) {}
}

SUITE(bounds_test)
{
    TEST(basic_bounds)
    {
        for (auto point : static_bounds<dynamic_range, 3, 4>{2}) {
            for (decltype(point)::size_type j = 0;
                 j < static_cast<decltype(point)::size_type>(decltype(point)::rank); j++)
            {
                use(j);
                use(point[static_cast<std::size_t>(j)]);
            }
        }
    }

    TEST(bounds_basic)
    {
        static_bounds<3, 4, 5> b;
        const auto a = b.slice();
        (void) a;
        static_bounds<4, dynamic_range, 2> x{4};
        x.slice().slice();
    }

    TEST(arrayview_iterator)
    {
        static_bounds<4, dynamic_range, 2> bounds{3};

        const auto itr = bounds.begin();
        (void) itr;
#ifdef CONFIRM_COMPILATION_ERRORS
        multi_span<int, 4, dynamic_range, 2> av(nullptr, bounds);

        auto itr2 = av.cbegin();

        for (auto& v : av) {
            v = 4;
        }
        fill(av.begin(), av.end(), 0);
#endif
    }

    TEST(bounds_convertible)
    {
        static_bounds<7, 4, 2> b1;
        static_bounds<7, dynamic_range, 2> b2 = b1;
        (void) b2;
#ifdef CONFIRM_COMPILATION_ERRORS
        static_bounds<7, dynamic_range, 1> b4 = b2;
#endif

        static_bounds<dynamic_range, dynamic_range, dynamic_range> b3 = b1;
        static_bounds<7, 4, 2> b4 = b3;
        (void) b4;

        static_bounds<dynamic_range> b11;

        static_bounds<dynamic_range> b5;
        static_bounds<34> b6;

        b5 = static_bounds<20>();
        CHECK_THROW(b6 = b5, fail_fast);
        b5 = static_bounds<34>();
        b6 = b5;

        CHECK(b5 == b6);
        CHECK(b5.size() == b6.size());
    }
}

int main(int, const char* []) { return UnitTest::RunAllTests(); }