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// Copyright 2015, Tobias Hermann and the FunctionalPlus contributors.
// https://github.com/Dobiasd/FunctionalPlus
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
#include "doctest/doctest.h"
#include <fplus/fplus.hpp>
#include <vector>
namespace {
auto is_even = [](auto value)
{
return (value % 2 == 0);
};
auto is_even_size_t = [](auto value)
{
return ( value % 2 == 0 );
};
auto accept_with_index = [](std::size_t index, auto value)
{
return ( index % 2 == 0 ) && ( value >= 10 );
};
typedef std::vector<int> IntVector;
typedef std::vector<IntVector> IntVectors;
}
TEST_CASE("filter_test, keep_if")
{
const std::vector<int> v = { 1, 2, 3, 2, 4, 5 };
auto result = fplus::keep_if(is_even, v);
REQUIRE_EQ(result, std::vector<int>({2, 2, 4}));
const auto keep_evens = fplus::bind_1st_of_2(
fplus::keep_if<decltype(is_even), const IntVector&>, is_even);
REQUIRE_EQ(
fplus::transform(keep_evens, IntVectors({{1,3,4},{1,2}})),
IntVectors({{4},{2}}));
}
TEST_CASE("filter_test, keep_if_r_value")
{
auto result = fplus::keep_if(is_even, std::vector<int>({1,2,3,2,4,5}));
REQUIRE_EQ(result, std::vector<int>({2, 2, 4}));
}
TEST_CASE("filter_test, drop_if")
{
const std::vector<int> v = { 1, 2, 3, 2, 4, 5 };
auto result = fplus::drop_if(is_even, v);
REQUIRE_EQ(result, std::vector<int>({1, 3, 5}));
}
TEST_CASE("filter_test, without")
{
using namespace fplus;
typedef std::vector<int> Ints;
REQUIRE_EQ(without(1, Ints({1,2,3})), Ints({2,3}));
REQUIRE_EQ(without(5, Ints({1,2,3})), Ints({1,2,3}));
REQUIRE_EQ(without(5, Ints({})), Ints({}));
}
TEST_CASE("filter_test, keep_if_with_idx")
{
const std::vector<int> v = { 1, 20, 30, 4, 50, 60, 7 };
auto result = fplus::keep_if_with_idx(accept_with_index, v);
REQUIRE_EQ(result, std::vector<int>({30, 50}));
}
TEST_CASE("filter_test, drop_if_with_idx")
{
const std::vector<int> v = { 1, 20, 30, 4, 50, 60, 7 };
auto result = fplus::drop_if_with_idx(accept_with_index, v);
REQUIRE_EQ(result, std::vector<int>({1, 20, 4, 60, 7}));
}
TEST_CASE("filter_test, keep_by_idx")
{
const std::vector<int> v = { 11, 17, 3, 8, 49, 6 };
auto result = fplus::keep_by_idx(is_even_size_t, v);
REQUIRE_EQ(result, std::vector<int>({11, 3, 49}));
auto result_rvalue = fplus::keep_by_idx(is_even_size_t, std::vector<int>({ 11, 17, 3, 8, 49, 6 }));
REQUIRE_EQ(result_rvalue, std::vector<int>({11, 3, 49}));
}
TEST_CASE("filter_test, drop_by_idx")
{
const std::vector<int> v = { 11, 17, 3, 8, 49, 6 };
auto result = fplus::drop_by_idx(is_even_size_t, v);
REQUIRE_EQ(result, std::vector<int>({17, 8, 6}));
}
TEST_CASE("filter_test, keep_idxs")
{
const std::vector<int> v = { 1, 2, 3, 4, 5, 6, 7 };
const std::vector<std::size_t> indices = { 2, 5 };
auto result = fplus::keep_idxs(indices, v);
REQUIRE_EQ(result, std::vector<int>({3, 6}));
}
TEST_CASE("filter_test, drop_idx")
{
const std::vector<int> v = { 1, 2, 3, 4, 5, 6, 7 };
auto result = fplus::drop_idx(2, v);
REQUIRE_EQ(result, std::vector<int>({1, 2, 4, 5, 6, 7}));
}
TEST_CASE("filter_test, drop_idxs")
{
const std::vector<int> v = { 1, 2, 3, 4, 5, 6, 7 };
const std::vector<std::size_t> indices = { 2, 5 };
auto result = fplus::drop_idxs(indices, v);
REQUIRE_EQ(result, std::vector<int>({1, 2, 4, 5, 7}));
}
TEST_CASE("filter_test, justs")
{
using fplus::maybe;
using fplus::just;
using fplus::nothing;
const std::vector<maybe<int>> v = { just(1), nothing<int>(), just(2) };
auto result = fplus::justs(v);
REQUIRE_EQ(result, std::vector<int>({1, 2}));
}
TEST_CASE("filter_test, oks")
{
using fplus::ok;
using fplus::error;
const std::vector<fplus::result<int, std::string>> v = { ok<int, std::string>(1),
error<int>(std::string("abc")),
ok<int, std::string>(2) };
auto result = fplus::oks(v);
REQUIRE_EQ(result, std::vector<int>({1, 2}));
}
TEST_CASE("filter_test, errors")
{
using fplus::ok;
using fplus::error;
const std::vector<fplus::result<int, std::string>> v = { ok<int, std::string>(1),
error<int>(std::string("abc")),
ok<int, std::string>(2) };
auto result = fplus::errors(v);
REQUIRE_EQ(result, std::vector<std::string>({"abc"}));
}
TEST_CASE("filter_test, trim_left")
{
const std::vector<int> v = { 0, 0, 0, 5, 6, 7, 8, 6, 4 };
auto result = fplus::trim_left(0, v);
REQUIRE_EQ(result, std::vector<int>({5, 6, 7, 8, 6, 4}));
}
TEST_CASE("filter_test, trim_token_left")
{
const std::vector<int> v = { 0, 1, 2, 0, 1, 2, 7, 5, 9 };
const std::vector<int> token = { 0, 1, 2 };
auto result = fplus::trim_token_left(token, v);
REQUIRE_EQ(result, std::vector<int>({7, 5, 9}));
}
TEST_CASE("filter_test, trim_right_by")
{
const std::vector<int> v = { 0, 2, 4, 5, 6, 7, 8, 6, 4 };
auto result = fplus::trim_right_by(is_even, v);
REQUIRE_EQ(result, std::vector<int>({0, 2, 4, 5, 6, 7}));
}
TEST_CASE("filter_test, trim_right_by_trims_all")
{
const std::vector<int> v = { 4, 8 };
auto result = fplus::trim_right_by(is_even, v);
REQUIRE(result.empty());
}
TEST_CASE("filter_test, trim_right")
{
const std::vector<int> v = { 0, 2, 4, 5, 6, 7, 8, 4, 4 };
auto result = fplus::trim_right(4, v);
REQUIRE_EQ(result, std::vector<int>({0, 2, 4, 5, 6, 7, 8}));
}
TEST_CASE("filter_test, trim_token_right")
{
const std::vector<int> v = { 7, 5, 9, 0, 1, 2, 0, 1, 2 };
const std::vector<int> token = { 0, 1, 2 };
auto result = fplus::trim_token_right(token, v);
REQUIRE_EQ(result, std::vector<int>({7, 5, 9}));
}
TEST_CASE("filter_test, trim_by")
{
const std::vector<int> v = { 0, 2, 4, 5, 6, 7, 8, 6, 4 };
auto result = fplus::trim_by(is_even, v);
REQUIRE_EQ(result, std::vector<int>({5, 6, 7}));
}
TEST_CASE("filter_test, trim")
{
const std::vector<int> v = { 0, 2, 4, 5, 6, 7, 8, 0, 0 };
auto result = fplus::trim(0, v);
REQUIRE_EQ(result, std::vector<int>({2, 4, 5, 6, 7, 8}));
}
TEST_CASE("filter_test, trim_token")
{
const std::vector<int> v = { 0, 1, 7, 8, 9, 0, 1 };
const std::vector<int> token = { 0, 1 };
auto result = fplus::trim_token(token, v);
REQUIRE_EQ(result, std::vector<int>({7, 8, 9}));
}
TEST_CASE("filter_test, adjacent_keep_snd_if")
{
const std::vector<int> v = { 0, 1, 7, 8, 9, 0, 1 };
REQUIRE_EQ(fplus::adjacent_keep_snd_if(std::greater<>(), v), std::vector<int>({0,0}));
REQUIRE_EQ(fplus::adjacent_keep_snd_if(std::less<int>(), v), std::vector<int>({0,1,7,8,9,1}));
}
TEST_CASE("filter_test, adjacent_drop_snd_if")
{
const std::vector<int> v = { 0, 1, 7, 8, 9, 0, 1 };
REQUIRE_EQ(fplus::adjacent_drop_snd_if(std::less<>(), v), std::vector<int>({0,0}));
REQUIRE_EQ(fplus::adjacent_drop_snd_if(std::greater<int>(), v), std::vector<int>({0,1,7,8,9,1}));
}
TEST_CASE("filter_test, adjacent_drop_fst_if")
{
const std::vector<int> v = { 0, 1, 7, 8, 9, 0, 1 };
REQUIRE_EQ(fplus::adjacent_drop_fst_if(std::less<>(), v), std::vector<int>({9,1}));
REQUIRE_EQ(fplus::adjacent_drop_fst_if(std::greater<int>(), v), std::vector<int>({0,1,7,8,0,1}));
}
TEST_CASE("filter_test, adjacent_keep_fst_if")
{
const std::vector<int> v = { 0, 1, 7, 8, 9, 0, 1 };
REQUIRE_EQ(fplus::adjacent_keep_fst_if(std::greater<>(), v), std::vector<int>({9,1}));
REQUIRE_EQ(fplus::adjacent_keep_fst_if(std::less<int>(), v), std::vector<int>({0,1,7,8,0,1}));
}
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