// IACore-OSS; The Core Library for All IA Open Source Projects
// Copyright (C) 2026 IAS (ias@iasoft.dev)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include <IACore/DataOps.hpp>

#include <IACore/IATest.hpp>

using namespace IACore;

// -----------------------------------------------------------------------------
// Test Block Definition
// -----------------------------------------------------------------------------

IAT_BEGIN_BLOCK(Core, DataOps)

bool TestCRC32() {
  {
    String s = "123456789";
    Span<const u8> span(reinterpret_cast<const u8 *>(s.data()), s.size());
    u32 result = DataOps::CRC32(span);

    IAT_CHECK_EQ(result, 0xE3069283);
  }

  {
    u32 result = DataOps::CRC32({});
    IAT_CHECK_EQ(result, 0U);
  }

  {
    std::vector<u8> buffer(33);
    for (size_t i = 1; i < 33; ++i)
      buffer[i] = (u8)i;

    std::vector<u8> refData(32);
    for (size_t i = 0; i < 32; ++i)
      refData[i] = (u8)(i + 1);

    u32 hashRef =
        DataOps::CRC32(Span<const u8>(refData.data(), refData.size()));

    u32 hashUnaligned = DataOps::CRC32(Span<const u8>(buffer.data() + 1, 32));

    IAT_CHECK_EQ(hashRef, hashUnaligned);
  }

  return TRUE;
}

bool TestHash_xxHash() {
  {
    String s = "123456789";
    u32 result = DataOps::Hash_xxHash(s);
    IAT_CHECK_EQ(result, 0x937bad67);
  }

  {
    String s = "The quick brown fox jumps over the lazy dog";
    u32 result = DataOps::Hash_xxHash(s);
    IAT_CHECK_EQ(result, 0xE85EA4DE);
  }

  {
    String s = "Test";
    u32 r1 = DataOps::Hash_xxHash(s);
    u32 r2 =
        DataOps::Hash_xxHash(Span<const u8>((const u8 *)s.data(), s.size()));
    IAT_CHECK_EQ(r1, r2);
  }

  return TRUE;
}

bool TestHash_FNV1A() {
  {
    String s = "123456789";
    u32 result =
        DataOps::Hash_FNV1A(Span<const u8>((const u8 *)s.data(), s.size()));
    IAT_CHECK_EQ(result, 0xbb86b11c);
  }

  {
    u32 result = DataOps::Hash_FNV1A(Span<const u8>{});
    IAT_CHECK_EQ(result, 0x811C9DC5);
  }

  return TRUE;
}

// -------------------------------------------------------------------------
// Registration
// -------------------------------------------------------------------------
IAT_BEGIN_TEST_LIST()
IAT_ADD_TEST(TestCRC32);
IAT_ADD_TEST(TestHash_FNV1A);
IAT_ADD_TEST(TestHash_xxHash);
IAT_END_TEST_LIST()

IAT_END_BLOCK()

IAT_REGISTER_ENTRY(Core, DataOps)