// SPDX-FileCopyrightText: 2019-2024 Connor McLaughlin <stenzek@gmail.com>
// SPDX-License-Identifier: CC-BY-NC-ND-4.0

#include "common/sha256_digest.h"

#include <gtest/gtest.h>

TEST(SHA256Digest, Simple)
{
  // https://github.com/B-Con/crypto-algorithms/blob/master/sha256_test.c

  static constexpr const char text1[] = "abc";
  static constexpr const char text2[] = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
  static constexpr const char text3[] = "aaaaaaaaaa";

  static constexpr SHA256Digest::Digest hash1 = {{0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea, 0x41, 0x41, 0x40,
                                                  0xde, 0x5d, 0xae, 0x22, 0x23, 0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17,
                                                  0x7a, 0x9c, 0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00, 0x15, 0xad}};
  static constexpr SHA256Digest::Digest hash2 = {{0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06, 0x38, 0xb8, 0xe5, 0xc0, 0x26,
                                                  0x93, 0x0c, 0x3e, 0x60, 0x39, 0xa3, 0x3c, 0xe4, 0x59, 0x64, 0xff,
                                                  0x21, 0x67, 0xf6, 0xec, 0xed, 0xd4, 0x19, 0xdb, 0x06, 0xc1}};
  static constexpr SHA256Digest::Digest hash3 = {{0xcd, 0xc7, 0x6e, 0x5c, 0x99, 0x14, 0xfb, 0x92, 0x81, 0xa1, 0xc7,
                                                  0xe2, 0x84, 0xd7, 0x3e, 0x67, 0xf1, 0x80, 0x9a, 0x48, 0xa4, 0x97,
                                                  0x20, 0x0e, 0x04, 0x6d, 0x39, 0xcc, 0xc7, 0x11, 0x2c, 0xd0}};

  ASSERT_EQ(SHA256Digest::GetDigest(text1, std::size(text1) - 1), hash1);
  ASSERT_EQ(SHA256Digest::GetDigest(text2, std::size(text2) - 1), hash2);

  SHA256Digest ldigest;
  for (u32 i = 0; i < 100000; i++)
    ldigest.Update(text3, std::size(text3) - 1);

  ASSERT_EQ(ldigest.Final(), hash3);
}