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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>
namespace {
auto squareLambda = [](int x) -> int { return x*x; };
auto cubeLambda = [](int x) -> int { return x*x*x; };
typedef std::vector<int> IntVector;
typedef std::list<int> IntList;
typedef std::pair<int, int> IntPair;
typedef std::vector<IntPair> IntPairs;
IntVector xs = {1,2,2,3,2};
struct dummy
{
int i;
};
}
TEST_CASE("pairs_test, zip_with")
{
using namespace fplus;
const auto multiply = [](int x, int y){ return x * y; };
REQUIRE_EQ(zip_with(multiply, xs, xs), transform(squareLambda, xs));
const auto add = [](int x, int y){ return x + y; };
REQUIRE_EQ(zip_with(add, IntVector({1,2,3}), IntVector({1,2})), IntVector({2,4}));
REQUIRE_EQ(zip_with(add, IntVector({1,2}), IntVector({1,2,3})), IntVector({2,4}));
REQUIRE_EQ(zip_with(add, IntVector({1,2}), IntList({1,2,3})), IntVector({2,4}));
const auto add_generic = [](auto x, int y) {return x + y;};
REQUIRE_EQ(zip_with(add_generic, IntVector({1,2,3}), IntVector({1,2})), IntVector({2,4}));
REQUIRE_EQ(zip_with(std::plus<>{}, IntVector({1,2,3}), IntVector({1,2})), IntVector({2,4}));
}
TEST_CASE("pairs_test, zip_with_3")
{
using namespace fplus;
const auto multiply = [](int x, int y, int z){ return x * y * z; };
const auto multiply_generic = [](auto x, auto y, auto z){ return x * y * z; };
const auto cubed = transform(cubeLambda, xs);
REQUIRE_EQ(zip_with_3(multiply, xs, xs, xs), cubed);
REQUIRE_EQ(zip_with_3(multiply_generic, xs, xs, xs), cubed);
}
TEST_CASE("pairs_test, zip_with_defaults")
{
using namespace fplus;
const auto add = [](int x, int y){ return x + y; };
const auto add_generic = [](auto x, auto y){ return x + y; };
REQUIRE_EQ(zip_with_defaults(add, 6, 7, IntVector({1,2,3}), IntVector({1,2})), IntVector({2,4,10}));
REQUIRE_EQ(zip_with_defaults(add, 6, 7, IntVector({1,2}), IntVector({1,2,3})), IntVector({2,4,9}));
REQUIRE_EQ(zip_with_defaults(add_generic, 6, 7, IntVector({1,2}), IntVector({1,2,3})), IntVector({2,4,9}));
}
TEST_CASE("pairs_test, zip")
{
using namespace fplus;
auto xsZippedWithXs = zip(xs, xs);
REQUIRE_EQ(unzip(xsZippedWithXs).first, xs);
}
TEST_CASE("pairs_test, pair functions")
{
using namespace fplus;
IntPair intPair = std::make_pair(2, 3);
IntPairs intPairs = {{1,2}, {3,4}};
IntPairs intPairsSwapped = {{2,1}, {4,3}};
REQUIRE_EQ(fst(intPair), 2);
REQUIRE_EQ(snd(intPair), 3);
REQUIRE_EQ(swap_pair_elems(intPair), std::make_pair(3, 2));
REQUIRE_EQ(swap_pairs_elems(intPairs), intPairsSwapped);
REQUIRE_EQ(transform_fst(squareLambda, intPair), std::make_pair(4, 3));
REQUIRE_EQ(transform_snd(squareLambda, intPair), std::make_pair(2, 9));
REQUIRE_EQ(transform_fst([](auto i) { return i * i; }, intPair), std::make_pair(4, 3));
REQUIRE_EQ(transform_snd([](auto i) { return i * i; }, intPair), std::make_pair(2, 9));
REQUIRE_EQ(transform_pair(squareLambda, squareLambda, intPair), std::make_pair(4, 9));
typedef std::vector<std::pair<std::string, int>> StringIntPairs;
StringIntPairs stringIntPairs = {{"a", 1}, {"a", 2}, {"b", 6}, {"a", 4}};
auto stringIntPairsAsMapGrouped = pairs_to_map_grouped(stringIntPairs);
auto groupNames = transform(fst<std::string, int>, stringIntPairs);
auto groupNameToMedianMap = transform_map_values(median<std::vector<int>>, stringIntPairsAsMapGrouped);
auto getMedianValue = bind_1st_and_2nd_of_3(get_from_map_with_def<std::map<std::string, int>>, groupNameToMedianMap, 0);
auto groupMendianValues = transform(getMedianValue, groupNames);
auto stringIntPairsSndReplacedWithGroupMedian = zip(groupNames, groupMendianValues);
REQUIRE_EQ(stringIntPairsSndReplacedWithGroupMedian, StringIntPairs({{"a", 2}, {"a", 2}, {"b", 6}, {"a", 2}}));
const std::function<int(int)> double_int = [](int x) -> int {
return 2 * x;
};
REQUIRE_EQ(transform_pair(double_int, double_int, IntPair({2, 3})),
IntPair({4, 6}));
// Thanks to invoke, such code works.
// (I don't have a use case for it though)
dummy dumb;
dumb.i = 42;
auto p = std::make_pair(dumb, dumb);
auto result = transform_pair(&dummy::i, &dummy::i, p);
REQUIRE_EQ(result, std::make_pair(42, 42));
}
TEST_CASE("pairs_test, enumerate")
{
using namespace fplus;
REQUIRE_EQ(enumerate(xs), (std::vector<std::pair<std::size_t, int>>({{0,1}, {1,2}, {2,2}, {3,3}, {4,2}})));
}
TEST_CASE("pairs_test, adjacent_pairs")
{
using namespace fplus;
REQUIRE_EQ(adjacent_pairs(xs), IntPairs({{1,2},{2,3}}));
REQUIRE_EQ(adjacent_pairs(IntVector({1,2,2,3})), IntPairs({{1,2},{2,3}}));
}
TEST_CASE("pairs_test, overlapping_pairs")
{
using namespace fplus;
REQUIRE_EQ(overlapping_pairs(xs), IntPairs({{1,2},{2,2},{2,3},{3,2}}));
}
TEST_CASE("pairs_test, overlapping_pairs_cyclic")
{
using namespace fplus;
REQUIRE_EQ(overlapping_pairs_cyclic(xs), IntPairs({{1,2},{2,2},{2,3},{3,2},{2,1}}));
}
TEST_CASE("pairs_test, first_mismatch_idx_on")
{
using namespace fplus;
REQUIRE_EQ(first_mismatch_idx_on(is_even<int>, IntVector({1,2,3}), IntVector({3,5,3})), just<std::size_t>(1));
REQUIRE_EQ(first_mismatch_idx_on(is_even<int>, IntVector({1,2,3}), IntVector({1,5})), just<std::size_t>(1));
REQUIRE_EQ(first_mismatch_idx_on(is_even<int>, IntVector({1,2,3}), IntVector({1,6})), nothing<std::size_t>());
REQUIRE_EQ(first_mismatch_idx_on(is_even<int>, IntVector(), IntVector({1,2})), nothing<std::size_t>());
}
TEST_CASE("pairs_test, first_mismatch_on")
{
using namespace fplus;
REQUIRE_EQ(first_mismatch_on(is_even<int>, IntVector({1,2,3}), IntVector({3,5,3})), just(IntPair(2,5)));
REQUIRE_EQ(first_mismatch_on(is_even<int>, IntVector({1,2,3}), IntVector({1,5})), just(IntPair(2,5)));
REQUIRE_EQ(first_mismatch_on(is_even<int>, IntVector({1,2,3}), IntVector({1,6})), nothing<IntPair>());
REQUIRE_EQ(first_mismatch_on(is_even<int>, IntVector(), IntVector({1,2})), nothing<IntPair>());
}
TEST_CASE("pairs_test, first_mismatch_idx")
{
using namespace fplus;
REQUIRE_EQ(first_mismatch_idx(IntVector({1,2,3}), IntVector({1,4,3})), just<std::size_t>(1));
REQUIRE_EQ(first_mismatch_idx(IntVector({1,2,3}), IntVector({1,4})), just<std::size_t>(1));
REQUIRE_EQ(first_mismatch_idx(IntVector({1,2,3}), IntVector({1,2})), nothing<std::size_t>());
REQUIRE_EQ(first_mismatch_idx(IntVector(), IntVector({1,2})), nothing<std::size_t>());
}
TEST_CASE("pairs_test, first_mismatch")
{
using namespace fplus;
REQUIRE_EQ(first_mismatch(IntVector({1,2,3}), IntVector({1,4,3})), just(IntPair(2,4)));
REQUIRE_EQ(first_mismatch(IntVector({1,2,3}), IntVector({1,4})), just(IntPair(2,4)));
REQUIRE_EQ(first_mismatch(IntVector({1,2,3}), IntVector({1,2})), nothing<IntPair>());
REQUIRE_EQ(first_mismatch(IntVector(), IntVector({1,2})), nothing<IntPair>());
}
TEST_CASE("pairs_test, first_match_idx_on")
{
using namespace fplus;
REQUIRE_EQ(first_match_idx_on(is_even<int>, IntVector({1,2,3}), IntVector({2,4,3})), just<std::size_t>(1));
REQUIRE_EQ(first_match_idx_on(is_even<int>, IntVector(), IntVector({1,2})), nothing<std::size_t>());
}
TEST_CASE("pairs_test, first_match")
{
using namespace fplus;
REQUIRE_EQ(first_match(IntVector({1,2,3}), IntVector({5,2,3})), just(IntPair(2,2)));
REQUIRE_EQ(first_match(IntVector(), IntVector({1,2})), nothing<IntPair>());
}
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