klotski/src/core_test/cases/all_cases.cc

#include "hash.h"
#include "cases_helper.h"
#include "common_code/common_code.h"

using klotski::cases::Ranges;
using klotski::codec::CommonCode;

static constexpr auto ALL_CASES_XXH3 = std::to_array<uint64_t>({
    0x71c8ff7a71c93da0, 0x2a5247ee8bfed666, 0xf4efc8fc692d58e2, 0x2d06800538d394c2,
    0xb3f7cc1b962d6944, 0x7e2792f8ab777faa, 0x4b8e78026cca8a27, 0x2d06800538d394c2,
    0x8acd688c5ab93c42, 0xedca5101ed81cc77, 0xe8dc9d30c91ce682, 0x2d06800538d394c2,
    0x2cdf6c14a7ce3e9a, 0xb9dd04a315583f5c, 0x19046e49c44ae90d, 0x2d06800538d394c2,
});

class AllCasesTest : public testing::Test, public Concurrent {
protected:
    void SetUp() override {
        Reset();
        EXPECT_FALSE(Available());
    }

    /// Whether all cases are ready.
    [[nodiscard]] static bool Available() {
        return AllCases::instance().is_available();
    }

    /// Reset all cases build state, note it is thread-unsafe.
    static void Reset() {
        exposer::AllCases_available_(AllCases::instance()) = false;
    }

    /// Verify that whether all cases data is correct.
    static void Verify() {
        const auto &all_cases = AllCases::instance().fetch();
        for (int head = 0; head < 16; ++head) {
            EXPECT_EQ(all_cases[head].size(), ALL_CASES_NUM[head]); // verify all cases size
            EXPECT_EQ(hash::xxh3(all_cases[head]), ALL_CASES_XXH3[head]); // verify all cases checksum
        }
    }
};

TEST_FF(AllCases, content) {
    auto verify = [](const uint64_t head) {
        auto &cases = AllCases::instance().fetch()[head];

        EXPECT_EQ(cases.size(), ALL_CASES_NUM[head]); // size verify
        EXPECT_EQ(hash::xxh3(cases), ALL_CASES_XXH3[head]); // checksum verify

        EXPECT_TRUE(std::ranges::is_sorted(cases.begin(), cases.end()));
        const auto match = std::ranges::adjacent_find(cases.begin(), cases.end());
        EXPECT_EQ(match, cases.end()); // no duplicates

        auto &all = BasicRanges::instance().fetch(); // subset verify
        EXPECT_TRUE(std::ranges::includes(all.begin(), all.end(), cases.begin(), cases.end()));

        for (const auto range : cases) {
            CommonCode::check(head << 32 | range); // release verify
        }
    };

    for (int head = 0; head < 16; ++head) {
        if (head % 4 != 3) {
            verify(head);
            continue;
        }
        EXPECT_EQ(AllCases::instance().fetch()[head].size(), 0);
    }
}

TEST_FF(AllCases, constant) {
    EXPECT_EQ(ALL_CASES_NUM_, 29334498);
    EXPECT_EQ(ALL_CASES_NUM.size(), 16);
    EXPECT_EQ(array_sum(ALL_CASES_NUM), ALL_CASES_NUM_);

    auto ranges = BasicRanges::instance().fetch();
    ranges.reverse();
    for (int head = 0; head < 16; ++head) {
        if (head % 4 == 3) {
            EXPECT_EQ(ALL_CASES_NUM[head], 0);
            continue;
        }
        Ranges release;
        ranges.derive(head, release);
        EXPECT_EQ(release.size(), ALL_CASES_NUM[head]);
    }
}

TEST_FF(AllCases, all_cases) {
    AllCases::instance().build();
    EXPECT_TRUE(Available());
    Verify();

    AllCases::instance().build();
    EXPECT_TRUE(Available());
    Verify();
}

TEST_FF(AllCases, all_cases_race) {
    racer_.Start([] {
        AllCases::instance().build();
    });
    EXPECT_FALSE(Available());
    racer_.Join();
    EXPECT_TRUE(Available());
    Verify();
}

TEST_FF(AllCases, all_cases_async) {
    condition_.clear();
    AllCases::instance().build_async(executor_.Entry(), [this] {
        EXPECT_FALSE(condition_.test_and_set());
        condition_.notify_all();
    });
    EXPECT_FALSE(Available());
    condition_.wait(false);
    EXPECT_TRUE(Available());
    Verify();

    condition_.clear();
    AllCases::instance().build_async(executor_.Entry(), [this] {
        EXPECT_FALSE(condition_.test_and_set());
        condition_.notify_all();
    });
    EXPECT_TRUE(Available());
    condition_.wait(false);
    EXPECT_TRUE(Available());
    Verify();
}

TEST_FF(AllCases, all_cases_async_race) {
    counter_.store(0);
    racer_.Start([this] {
        AllCases::instance().build_async(executor_.Entry(), [this] {
            counter_.fetch_add(1);
        });
    });
    EXPECT_FALSE(Available());
    racer_.Join();
    EXPECT_TRUE(Available());
    EXPECT_EQ(counter_.load(), racer_.RaceNum());
    Verify();
}

TEST_FF(AllCases, all_cases_async_block) {
    condition_.clear();
    serial_.Entry()([this] {
        AllCases::instance().build_async(serial_.Entry(), [this] {
            EXPECT_FALSE(condition_.test_and_set());
            condition_.notify_all();
        });
    });
    EXPECT_FALSE(Available());
    condition_.wait(false);
    EXPECT_TRUE(Available());
    Verify();
}