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#include <immer/array.hpp>
#include <immer/flex_vector.hpp>
#include <immer/map.hpp>
#include <immer/set.hpp>
#include <immer/table.hpp>
#include <immer/vector.hpp>
#include <immer/algorithm.hpp>
#include <catch2/catch.hpp>
struct thing
{
int id = 0;
};
bool operator==(const thing& a, const thing& b) { return a.id == b.id; }
TEST_CASE("iteration exposes const")
{
auto do_check = [](auto v) {
using value_t = typename decltype(v)::value_type;
immer::for_each(v, [](auto&& x) {
static_assert(std::is_same<const value_t&, decltype(x)>::value, "");
});
};
do_check(immer::vector<int>{});
do_check(immer::flex_vector<int>{});
do_check(immer::array<int>{});
do_check(immer::map<int, int>{});
do_check(immer::set<int>{});
do_check(immer::table<thing>{});
}
TEST_CASE("chunked iteration exposes const")
{
auto do_check = [](auto v) {
using value_t = typename decltype(v)::value_type;
immer::for_each_chunk(v, [](auto a, auto b) {
static_assert(std::is_same<const value_t*, decltype(a)>::value, "");
static_assert(std::is_same<const value_t*, decltype(b)>::value, "");
});
};
do_check(immer::vector<int>{});
do_check(immer::flex_vector<int>{});
do_check(immer::array<int>{});
do_check(immer::map<int, int>{});
do_check(immer::set<int>{});
do_check(immer::table<thing>{});
}
TEST_CASE("accumulate")
{
auto do_check = [](auto v) {
using value_t = typename decltype(v)::value_type;
immer::accumulate(v, value_t{}, [](auto&& a, auto&& b) {
static_assert(std::is_same<value_t&&, decltype(a)>::value, "");
static_assert(std::is_same<const value_t&, decltype(b)>::value, "");
return std::move(a);
});
};
do_check(immer::vector<int>{});
do_check(immer::flex_vector<int>{});
do_check(immer::array<int>{});
do_check(immer::map<int, int>{});
do_check(immer::set<int>{});
do_check(immer::table<thing>{});
}
TEST_CASE("diffing exposes const")
{
auto do_check = [](auto v) {
using value_t = typename decltype(v)::value_type;
immer::diff(
v,
v,
[](auto&& x) {
static_assert(std::is_same<const value_t&, decltype(x)>::value,
"");
},
[](auto&& x) {
static_assert(std::is_same<const value_t&, decltype(x)>::value,
"");
},
[](auto&& x, auto&& y) {
static_assert(std::is_same<const value_t&, decltype(x)>::value,
"");
static_assert(std::is_same<const value_t&, decltype(y)>::value,
"");
});
};
do_check(immer::map<int, int>{});
do_check(immer::set<int>{});
do_check(immer::table<thing>{});
}
TEST_CASE("all_of")
{
auto do_check = [](auto v) {
using value_t = typename decltype(v)::value_type;
immer::all_of(v, [](auto&& x) {
static_assert(std::is_same<const value_t&, decltype(x)>::value, "");
return true;
});
};
do_check(immer::vector<int>{});
do_check(immer::flex_vector<int>{});
do_check(immer::array<int>{});
// not supported
// do_check(immer::map<int, int>{});
// do_check(immer::set<int>{});
// do_check(immer::table<thing>{});
}
TEST_CASE("update vectors")
{
auto do_check = [](auto v) {
if (false)
(void) v.update(0, [](auto&& x) {
using type_t = std::decay_t<decltype(x)>;
// vectors do copy first the whole array, and then move the
// copied value into the function
static_assert(std::is_same<type_t&&, decltype(x)>::value, "");
return x;
});
};
do_check(immer::vector<int>{});
do_check(immer::flex_vector<int>{});
do_check(immer::array<int>{});
}
TEST_CASE("update maps")
{
auto do_check = [](auto v) {
(void) v.update(0, [](auto&& x) {
using type_t = std::decay_t<decltype(x)>;
// for maps, we actually do not make a copy at all but pase the
// original instance directly, as const..
static_assert(std::is_same<const type_t&, decltype(x)>::value, "");
return x;
});
};
do_check(immer::map<int, int>{});
do_check(immer::table<thing>{});
}
TEST_CASE("update_if_exists maps")
{
auto do_check = [](auto v) {
(void) v.update_if_exists(0, [](auto&& x) {
using type_t = std::decay_t<decltype(x)>;
// for maps, we actually do not make a copy at all but pase the
// original instance directly, as const..
static_assert(std::is_same<const type_t&, decltype(x)>::value, "");
return x;
});
};
do_check(immer::map<int, int>{});
do_check(immer::table<thing>{});
}
TEST_CASE("update vectors move")
{
auto do_check = [](auto v) {
if (false)
(void) std::move(v).update(0, [](auto&& x) {
using type_t = std::decay_t<decltype(x)>;
// vectors do copy first the whole array, and then move the
// copied value into the function
static_assert(std::is_same<type_t&&, decltype(x)>::value, "");
return x;
});
};
do_check(immer::vector<int>{});
do_check(immer::flex_vector<int>{});
do_check(immer::array<int>{});
}
TEST_CASE("update maps move")
{
auto do_check = [](auto v) {
(void) std::move(v).update(0, [](auto&& x) {
using type_t = std::decay_t<decltype(x)>;
// for maps, we actually do not make a copy at all but pase the
// original instance directly, as const..
static_assert(std::is_same<const type_t&, decltype(x)>::value ||
std::is_same<type_t&&, decltype(x)>::value,
"");
return x;
});
};
do_check(immer::map<int, int>{});
do_check(immer::table<thing>{});
}
TEST_CASE("update_if_exists maps move")
{
auto do_check = [](auto v) {
(void) std::move(v).update_if_exists(0, [](auto&& x) {
using type_t = std::decay_t<decltype(x)>;
// for maps, we actually do not make a copy at all but pase the
// original instance directly, as const..
static_assert(std::is_same<const type_t&, decltype(x)>::value ||
std::is_same<type_t&&, decltype(x)>::value,
"");
return x;
});
};
do_check(immer::map<int, int>{});
do_check(immer::table<thing>{});
}
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