// Copyright (C) 2018 Jonathan Müller <jonathanmueller.dev@gmail.com>

// This file is subject to the license terms in the LICENSE file

// found in the top-level directory of this distribution.

#include <foonathan/array/array_view.hpp>

#include <catch.hpp>

using namespace foonathan::array;

TEST_CASE("array_view", "[view]")

{

// no need to test much, most is already handled by block_view

const int carray[] = {1, 2, 3};

int array[] = {1, 2, 3};

SECTION("creation")

{

array_view<const int> cview;

SECTION("non-const")

{

cview = make_array_view(array);

}

SECTION("const")

{

cview = make_array_view(carray);

}

REQUIRE(cview[0] == 1);

REQUIRE(cview[1] == 2);

REQUIRE(cview[2] == 3);

REQUIRE(cview.front() == 1);

REQUIRE(cview.back() == 3);

}

array_view<int> view = make_array_view(array);

view[1] = 42;

REQUIRE(array[1] == 42);

SECTION("slice")

{

array_view<int> slice_view = view.slice(1u, 1u);

REQUIRE(slice_view.size() == 1u);

REQUIRE(slice_view.data() == array + 1);

slice_view = view.slice(view.begin() + 1, 1u);

REQUIRE(slice_view.size() == 1u);

REQUIRE(slice_view.data() == array + 1);

}

}