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#include <vector>
#include "tensorflow/core/lib/hash/hash.h"
#include "tensorflow/core/platform/logging.h"
#include "tensorflow/core/platform/test_benchmark.h"
#include <gtest/gtest.h>
namespace tensorflow {
TEST(Hash, SignedUnsignedIssue) {
const unsigned char d1[1] = {0x62};
const unsigned char d2[2] = {0xc3, 0x97};
const unsigned char d3[3] = {0xe2, 0x99, 0xa5};
const unsigned char d4[4] = {0xe1, 0x80, 0xb9, 0x32};
const unsigned char d5[48] = {
0x01, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x18, 0x28, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
struct Case {
uint32 hash32;
uint64 hash64;
const unsigned char* data;
size_t size;
uint32 seed;
};
for (Case c : std::vector<Case>{
{0x471a8188u, 0x4c61ea3eeda4cb87ull, nullptr, 0, 0xbc9f1d34},
{0xd615eba5u, 0x091309f7ef916c8aull, d1, sizeof(d1), 0xbc9f1d34},
{0x0c3cccdau, 0xa815bcdf1d1af01cull, d2, sizeof(d2), 0xbc9f1d34},
{0x3ba37e0eu, 0x02167564e4d06430ull, d3, sizeof(d3), 0xbc9f1d34},
{0x16174eb3u, 0x8f7ed82ffc21071full, d4, sizeof(d4), 0xbc9f1d34},
{0x98b1926cu, 0xce196580c97aff1eull, d5, sizeof(d5), 0x12345678},
}) {
EXPECT_EQ(c.hash32,
Hash32(reinterpret_cast<const char*>(c.data), c.size, c.seed));
EXPECT_EQ(c.hash64,
Hash64(reinterpret_cast<const char*>(c.data), c.size, c.seed));
// Check hashes with inputs aligned differently.
for (int align = 1; align <= 7; align++) {
std::string input(align, 'x');
input.append(reinterpret_cast<const char*>(c.data), c.size);
EXPECT_EQ(c.hash32, Hash32(&input[align], c.size, c.seed));
EXPECT_EQ(c.hash64, Hash64(&input[align], c.size, c.seed));
}
}
}
static void BM_Hash32(int iters, int len) {
std::string input(len, 'x');
uint32 h = 0;
for (int i = 0; i < iters; i++) {
h = Hash32(input.data(), len, 1);
}
testing::BytesProcessed(static_cast<int64>(iters) * len);
VLOG(1) << h;
}
BENCHMARK(BM_Hash32)->Range(1, 1024);
} // namespace tensorflow
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