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// -----------------------------------------------------------------------------------------------------
// Copyright (c) 2006-2020, Knut Reinert & Freie Universität Berlin
// Copyright (c) 2016-2020, Knut Reinert & MPI für molekulare Genetik
// This file may be used, modified and/or redistributed under the terms of the 3-clause BSD-License
// shipped with this file and also available at: https://github.com/seqan/seqan3/blob/master/LICENSE.md
// -----------------------------------------------------------------------------------------------------
#include <iostream>
#include <gtest/gtest.h>
#include <seqan3/alphabet/nucleotide/dna5.hpp>
#include <seqan3/range/concept.hpp>
#include <seqan3/range/views/as_const.hpp>
#include <seqan3/range/views/complement.hpp>
#include <seqan3/range/views/to.hpp>
#include <seqan3/range/views/to_lower.hpp>
#include <seqan3/std/algorithm>
#include <seqan3/std/ranges>
#include <seqan3/test/expect_range_eq.hpp>
using seqan3::operator""_dna5;
TEST(view_as_const, basic)
{
std::string vec{"ACTTTGATA"};
// pipe notation
auto v = vec | seqan3::views::as_const;
EXPECT_RANGE_EQ(vec, v);
// function notation
auto v2(seqan3::views::as_const(vec));
EXPECT_RANGE_EQ(vec, v2);
// combinability
seqan3::dna5_vector vec2{"ACGTA"_dna5};
seqan3::dna5_vector v3 = vec2
| seqan3::views::complement
| seqan3::views::as_const
| seqan3::views::to<std::vector>;
EXPECT_EQ("TGCAT"_dna5, v3);
}
TEST(view_as_const, concepts)
{
std::string vec{"ACTTTGATA"};
auto v1 = vec | seqan3::views::as_const;
EXPECT_TRUE(std::ranges::input_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::forward_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::bidirectional_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::random_access_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::view<decltype(v1)>);
EXPECT_TRUE(std::ranges::sized_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::common_range<decltype(v1)>);
EXPECT_TRUE(seqan3::const_iterable_range<decltype(v1)>);
EXPECT_FALSE((std::ranges::output_range<decltype(v1), char>));
EXPECT_TRUE((std::is_same_v<decltype(v1[0]), char const &>));
auto v2 = vec | seqan3::views::to_lower | seqan3::views::as_const; // to_lower generates values
EXPECT_TRUE(std::ranges::input_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::forward_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::bidirectional_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::random_access_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::view<decltype(v1)>);
EXPECT_TRUE(std::ranges::sized_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::common_range<decltype(v1)>);
EXPECT_TRUE(seqan3::const_iterable_range<decltype(v1)>);
EXPECT_FALSE((std::ranges::output_range<decltype(v1), char>));
EXPECT_TRUE((std::is_same_v<decltype(v2[0]), char>)); // don't add const-ness to values
}
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