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#include <catch.hpp>
#include <iostream>
#include "../lib/bipartitions.hpp"
#include "../lib/ranked_bitvector.hpp"
#include "../lib/union_find.hpp"
namespace terraces {
namespace tests {
TEST_CASE("bipartition1", "[bipartition]") {
auto fl = utils::free_list{};
auto alloc = utils::stack_allocator<index_t>{fl, 4};
union_find u(4, alloc);
ranked_bitvector s{4, alloc};
s.set(0);
s.set(1);
s.set(2);
s.set(3);
s.update_ranks();
u.merge(0, 1);
u.compress();
bipartitions bip_it(s, u, alloc);
CHECK(bip_it.end_bip() == 4);
CHECK(bip_it.num_bip() == 3);
CHECK(bip_it.begin_bip() == 1);
auto set = bip_it.get_first_set(1, alloc);
CHECK(!set.get(0));
CHECK(!set.get(1));
CHECK(set.get(2));
CHECK(!set.get(3));
set = bip_it.get_first_set(2, alloc);
CHECK(!set.get(0));
CHECK(!set.get(1));
CHECK(!set.get(2));
CHECK(set.get(3));
set = bip_it.get_first_set(3, alloc);
CHECK(!set.get(0));
CHECK(!set.get(1));
CHECK(set.get(2));
CHECK(set.get(3));
CHECK(bip_it.end_bip() == 4);
CHECK(bip_it.num_bip() == 3);
}
} // namespace tests
} // namespace terraces
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