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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 <range/v3/algorithm/copy.hpp>
#include <range/v3/view/unique.hpp>
#include <seqan3/core/char_operations/predicate.hpp>
#include <seqan3/range/views/persist.hpp>
#include <seqan3/range/views/to.hpp>
#include <seqan3/range/concept.hpp>
#include <seqan3/std/concepts>
#include <seqan3/std/ranges>
// ============================================================================
// test templates
// ============================================================================
TEST(view_persist, delegate_to_view_all)
{
std::string vec{"foo"};
// pipe notation
auto v = vec | seqan3::views::persist;
EXPECT_EQ("foo", v | seqan3::views::to<std::string>);
// function notation
std::string v2 = seqan3::views::persist(vec) | seqan3::views::to<std::string>;
EXPECT_EQ("foo", v2);
// combinability
auto v3 = vec | seqan3::views::persist | ranges::views::unique;
EXPECT_EQ("fo", v3 | seqan3::views::to<std::string>);
std::string v3b = vec
| std::views::reverse
| seqan3::views::persist
| ranges::views::unique
| seqan3::views::to<std::string>;
EXPECT_EQ("of", v3b);
// store combined
auto a1 = seqan3::views::persist | ranges::views::unique;
auto v5 = vec | a1;
EXPECT_EQ("fo", v5 | seqan3::views::to<std::string>);
}
TEST(view_persist, wrap_temporary)
{
// pipe notation
auto v = std::string{"foo"} | seqan3::views::persist;
EXPECT_EQ("foo", v | seqan3::views::to<std::string>);
// function notation
std::string v2 = seqan3::views::persist(std::string{"foo"}) | seqan3::views::to<std::string>;
EXPECT_EQ("foo", v2);
// combinability
auto v3 = std::string{"foo"} | seqan3::views::persist | ranges::views::unique;
EXPECT_EQ("fo", v3 | seqan3::views::to<std::string>);
std::string v3b = std::string{"foo"}
| seqan3::views::persist
| std::views::filter(seqan3::is_char<'o'>)
| ranges::views::unique
| seqan3::views::to<std::string>;
EXPECT_EQ("o", v3b);
}
TEST(view_persist, const)
{
// inner const
using t = std::string const;
auto v = t{"foo"} | seqan3::views::persist;
EXPECT_EQ("foo", v | seqan3::views::to<std::string>);
// outer const
auto const & v2 = std::string{"foo"} | seqan3::views::persist;
EXPECT_EQ("foo", v2 | seqan3::views::to<std::string>);
// inner + outer const
using t = std::string const;
auto const & v3 = t{"foo"} | seqan3::views::persist;
EXPECT_EQ("foo", v3 | seqan3::views::to<std::string>);
}
TEST(view_persist, concepts)
{
EXPECT_TRUE(std::ranges::input_range<decltype(std::string{"foo"})>);
EXPECT_TRUE(std::ranges::forward_range<decltype(std::string{"foo"})>);
EXPECT_TRUE(std::ranges::bidirectional_range<decltype(std::string{"foo"})>);
EXPECT_TRUE(std::ranges::random_access_range<decltype(std::string{"foo"})>);
EXPECT_FALSE(std::ranges::view<decltype(std::string{"foo"})>);
EXPECT_TRUE(std::ranges::sized_range<decltype(std::string{"foo"})>);
EXPECT_TRUE(std::ranges::common_range<decltype(std::string{"foo"})>);
EXPECT_TRUE(seqan3::const_iterable_range<decltype(std::string{"foo"})>);
EXPECT_TRUE((std::ranges::output_range<decltype(std::string{"foo"}), char>));
auto v1 = std::string{"foo"} | seqan3::views::persist;
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_TRUE((std::ranges::output_range<decltype(v1), char>));
}
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