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// SPDX-FileCopyrightText: 2006-2025 Knut Reinert & Freie Universität Berlin
// SPDX-FileCopyrightText: 2016-2025 Knut Reinert & MPI für molekulare Genetik
// SPDX-License-Identifier: BSD-3-Clause
#include <gtest/gtest.h>
#include <iostream>
#include <ranges>
#include <seqan3/alphabet/detail/debug_stream_alphabet.hpp>
#include <seqan3/alphabet/mask/masked.hpp>
#include <seqan3/alphabet/quality/aliases.hpp>
#include <seqan3/alphabet/views/complement.hpp>
#include <seqan3/alphabet/views/to_char.hpp>
#include <seqan3/test/expect_range_eq.hpp>
#include <seqan3/utility/range/concept.hpp>
#include <seqan3/utility/views/elements.hpp>
#include <seqan3/utility/views/zip.hpp>
using seqan3::operator""_dna4;
using seqan3::operator""_phred42;
TEST(view_get, basic)
{
// TODO remove const-ness from input vector once alphabet_proxy's complement doesnt cause ICE
std::vector<seqan3::dna4q> const qv{{'A'_dna4, '!'_phred42},
{'C'_dna4, '"'_phred42},
{'G'_dna4, '#'_phred42},
{'T'_dna4, '$'_phred42}};
//functor
EXPECT_RANGE_EQ("ACGT"_dna4, seqan3::views::elements<0>(qv));
EXPECT_RANGE_EQ("!\"#$"_phred42, seqan3::views::elements<1>(qv));
// pipe notation
EXPECT_RANGE_EQ("ACGT"_dna4, qv | seqan3::views::elements<0>);
EXPECT_RANGE_EQ("!\"#$"_phred42, qv | seqan3::views::elements<1>);
// combinability
EXPECT_RANGE_EQ("TGCA"_dna4, qv | seqan3::views::elements<0> | seqan3::views::complement);
}
TEST(view_get, advanced)
{
// TODO remove const-ness from input vector once alphabet_proxy inherits it's alphabet
std::vector<seqan3::qualified<seqan3::masked<seqan3::dna4>, seqan3::phred42>> const t{
{{'A'_dna4, seqan3::mask::masked}, '!'_phred42},
{{'C'_dna4, seqan3::mask::unmasked}, '"'_phred42},
{{'G'_dna4, seqan3::mask::masked}, '#'_phred42},
{{'T'_dna4, seqan3::mask::unmasked}, '$'_phred42}};
// functor notation
std::vector<seqan3::masked<seqan3::dna4>> expected_sequence{{'A'_dna4, seqan3::mask::masked},
{'C'_dna4, seqan3::mask::unmasked},
{'G'_dna4, seqan3::mask::masked},
{'T'_dna4, seqan3::mask::unmasked}};
EXPECT_RANGE_EQ(expected_sequence, seqan3::views::elements<0>(t));
EXPECT_RANGE_EQ("!\"#$"_phred42, seqan3::views::elements<1>(t));
EXPECT_RANGE_EQ("ACGT"_dna4, seqan3::views::elements<0>(seqan3::views::elements<0>(t)));
// pipe notation
EXPECT_RANGE_EQ(expected_sequence, t | seqan3::views::elements<0>);
EXPECT_RANGE_EQ("!\"#$"_phred42, t | seqan3::views::elements<1>);
EXPECT_RANGE_EQ("ACGT"_dna4, t | seqan3::views::elements<0> | seqan3::views::elements<0>);
// combinability
EXPECT_RANGE_EQ(expected_sequence | std::views::reverse, t | seqan3::views::elements<0> | std::views::reverse);
EXPECT_RANGE_EQ("$#\"!"_phred42, t | seqan3::views::elements<1> | std::views::reverse);
EXPECT_RANGE_EQ("TGCA"_dna4, t | seqan3::views::elements<0> | seqan3::views::elements<0> | std::views::reverse);
}
TEST(view_get, pair_range)
{
std::vector<std::pair<int, int>> pair_range{{0, 1}, {1, 2}, {2, 3}, {3, 4}};
// functor notation
EXPECT_RANGE_EQ((std::vector{0, 1, 2, 3}), seqan3::views::elements<0>(pair_range));
EXPECT_RANGE_EQ((std::vector{1, 2, 3, 4}), seqan3::views::elements<1>(pair_range));
// pipe notation
EXPECT_RANGE_EQ((std::vector{0, 1, 2, 3}), pair_range | seqan3::views::elements<0>);
EXPECT_RANGE_EQ((std::vector{1, 2, 3, 4}), pair_range | seqan3::views::elements<1>);
}
TEST(view_get, tuple_range)
{
std::vector<std::tuple<int, int>> tuple_range{{0, 1}, {1, 2}, {2, 3}, {3, 4}};
// functor notation
EXPECT_RANGE_EQ((std::vector{0, 1, 2, 3}), seqan3::views::elements<0>(tuple_range));
EXPECT_RANGE_EQ((std::vector{1, 2, 3, 4}), seqan3::views::elements<1>(tuple_range));
// pipe notation
EXPECT_RANGE_EQ((std::vector{0, 1, 2, 3}), tuple_range | seqan3::views::elements<0>);
EXPECT_RANGE_EQ((std::vector{1, 2, 3, 4}), tuple_range | seqan3::views::elements<1>);
}
TEST(view_get, concepts)
{
std::vector<std::tuple<int, int>> vec{{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}};
EXPECT_TRUE(std::ranges::input_range<decltype(vec)>);
EXPECT_TRUE(std::ranges::forward_range<decltype(vec)>);
EXPECT_TRUE(std::ranges::bidirectional_range<decltype(vec)>);
EXPECT_TRUE(std::ranges::random_access_range<decltype(vec)>);
EXPECT_FALSE(std::ranges::view<decltype(vec)>);
EXPECT_TRUE(std::ranges::sized_range<decltype(vec)>);
EXPECT_TRUE(std::ranges::common_range<decltype(vec)>);
EXPECT_TRUE(seqan3::const_iterable_range<decltype(vec)>);
EXPECT_TRUE((std::ranges::output_range<decltype(vec), std::tuple<int, int>>));
auto v1 = vec | seqan3::views::elements<0>;
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), std::tuple<int, int>>));
EXPECT_TRUE((std::ranges::output_range<decltype(v1), int>));
}
// https://github.com/seqan/seqan3/issues/745
TEST(view_get, nested_zip_view)
{
std::vector vec1{0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
auto get_view = seqan3::views::zip(seqan3::views::zip(vec1, vec1), vec1) | seqan3::views::elements<0>;
for (auto && elem : get_view)
std::get<0>(elem) = -1;
EXPECT_EQ(vec1[0], -1);
}
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