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//===- llvm/unittest/Support/xxhashTest.cpp -------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/xxhash.h"
#include "gtest/gtest.h"
using namespace llvm;
TEST(xxhashTest, Basic) {
EXPECT_EQ(0xef46db3751d8e999U, xxHash64(StringRef()));
EXPECT_EQ(0x33bf00a859c4ba3fU, xxHash64("foo"));
EXPECT_EQ(0x48a37c90ad27a659U, xxHash64("bar"));
EXPECT_EQ(0x69196c1b3af0bff9U,
xxHash64("0123456789abcdefghijklmnopqrstuvwxyz"));
}
TEST(xxhashTest, xxh3) {
constexpr size_t size = 2243;
uint8_t a[size];
uint64_t x = 1;
for (size_t i = 0; i < size; ++i) {
x ^= x << 13;
x ^= x >> 7;
x ^= x << 17;
a[i] = uint8_t(x);
}
#define F(len, expected) \
EXPECT_EQ(uint64_t(expected), xxh3_64bits(ArrayRef(a, size_t(len))))
F(0, 0x2d06800538d394c2);
F(1, 0xd0d496e05c553485);
F(2, 0x84d625edb7055eac);
F(3, 0x6ea2d59aca5c3778);
F(4, 0xbf65290914e80242);
F(5, 0xc01fd099ad4fc8e4);
F(6, 0x9e3ea8187399caa5);
F(7, 0x9da8b60540644f5a);
F(8, 0xabc1413da6cd0209);
F(9, 0x8bc89400bfed51f6);
F(16, 0x7e46916754d7c9b8);
F(17, 0xed4be912ba5f836d);
F(32, 0xf59b59b58c304fd1);
F(33, 0x9013fb74ca603e0c);
F(64, 0xfa5271fcce0db1c3);
F(65, 0x79c42431727f1012);
F(96, 0x591ee0ddf9c9ccd1);
F(97, 0x8ffc6a3111fe19da);
F(128, 0x06a146ee9a2da378);
F(129, 0xbc7138129bf065da);
F(403, 0xcefeb3ffa532ad8c);
F(512, 0xcdfa6b6268e3650f);
F(513, 0x4bb5d42742f9765f);
F(2048, 0x330ce110cbb79eae);
F(2049, 0x3ba6afa0249fef9a);
F(2240, 0xd61d4d2a94e926a8);
F(2243, 0x0979f786a24edde7);
#undef F
}
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