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// Copyright 2009 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#include "../catch.hpp"
#include "rkcommon/utility/ArrayView.h"
#include <numeric>
using rkcommon::utility::ArrayView;
// Helper functions ///////////////////////////////////////////////////////////
template <typename T>
inline void verify_empty(const ArrayView<T> &v)
{
// NOTE: implicitly tests data(), size(), begin(), cbegin(), and
// operator bool()
REQUIRE(!v);
REQUIRE(v.data() == nullptr);
REQUIRE(v.size() == 0);
REQUIRE(v.begin() == nullptr);
REQUIRE(v.cbegin() == nullptr);
}
template <typename T>
inline void verify_N(const ArrayView<T> &v, int N)
{
REQUIRE(N > 0);
// NOTE: implicitly tests data(), size(), begin(), cbegin(), operator bool(),
// and operator[]
REQUIRE(v);
REQUIRE(v.data() != nullptr);
REQUIRE(v.begin() != nullptr);
REQUIRE(v.cbegin() != nullptr);
REQUIRE(v.size() == size_t(N));
for (int i = 0; i < N; ++i)
REQUIRE(v[i] == i);
}
template <typename T, int SIZE>
inline std::array<T, SIZE> make_test_array()
{
std::array<T, SIZE> a = {};
std::iota(a.begin(), a.end(), 0);
return a;
}
template <typename T>
inline std::vector<T> make_test_vector(int N)
{
std::vector<T> v(N);
std::iota(v.begin(), v.end(), 0);
return v;
}
// Tests //////////////////////////////////////////////////////////////////////
TEST_CASE("ArrayView construction", "[ArrayView]")
{
ArrayView<int> view;
verify_empty(view);
SECTION("Construct from a std::array")
{
auto array = make_test_array<int, 5>();
ArrayView<int> view2(array);
verify_N(view2, 5);
SECTION("Assign from std::array")
{
view = array;
verify_N(view, 5);
}
}
SECTION("Construct from a std::vector")
{
auto vector = make_test_vector<int>(5);
ArrayView<int> view2(vector);
verify_N(view2, 5);
SECTION("Assign from std::vector")
{
view = vector;
verify_N(view, 5);
}
}
}
TEST_CASE("ArrayView::reset", "[ArrayView]")
{
ArrayView<int> view;
auto vector = make_test_vector<int>(5);
view = vector;
verify_N(view, 5);
SECTION("ArrayView::reset with no arguments")
{
view.reset();
verify_empty(view);
}
SECTION("ArrayView::reset with arguments")
{
auto array = make_test_array<int, 10>();
view.reset(array.data(), array.size());
verify_N(view, 10);
}
}
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