94 lines · cpp
1//===- llvm/unittest/Support/raw_ostream_test.cpp - raw_ostream tests -----===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "llvm/Support/Format.h"10#include "llvm/Support/raw_sha1_ostream.h"11#include "gtest/gtest.h"12 13#include <string>14 15using namespace llvm;16 17static std::string toHex(ArrayRef<uint8_t> Input) {18 static const char *const LUT = "0123456789ABCDEF";19 size_t Length = Input.size();20 21 std::string Output;22 Output.reserve(2 * Length);23 for (size_t i = 0; i < Length; ++i) {24 const unsigned char c = Input[i];25 Output.push_back(LUT[c >> 4]);26 Output.push_back(LUT[c & 15]);27 }28 return Output;29}30 31TEST(raw_sha1_ostreamTest, Basic) {32 llvm::raw_sha1_ostream Sha1Stream;33 Sha1Stream << "Hello World!";34 auto Hash = toHex(Sha1Stream.sha1());35 36 ASSERT_EQ("2EF7BDE608CE5404E97D5F042F95F89F1C232871", Hash);37}38 39TEST(sha1_hash_test, Basic) {40 ArrayRef<uint8_t> Input((const uint8_t *)"Hello World!", 12);41 std::array<uint8_t, 20> Vec = SHA1::hash(Input);42 std::string Hash = toHex(Vec);43 ASSERT_EQ("2EF7BDE608CE5404E97D5F042F95F89F1C232871", Hash);44}45 46TEST(sha1_hash_test, Update) {47 SHA1 sha1;48 std::string Input = "123456789012345678901234567890";49 ASSERT_EQ(Input.size(), 30UL);50 // 3 short updates.51 sha1.update(Input);52 sha1.update(Input);53 sha1.update(Input);54 // Long update that gets into the optimized loop with prefix/suffix.55 sha1.update(Input + Input + Input + Input);56 // 18 bytes buffered now.57 58 std::string Hash = toHex(sha1.final());59 ASSERT_EQ("3E4A614101AD84985AB0FE54DC12A6D71551E5AE", Hash);60}61 62// Check that getting the intermediate hash in the middle of the stream does63// not invalidate the final result.64TEST(raw_sha1_ostreamTest, Intermediate) {65 llvm::raw_sha1_ostream Sha1Stream;66 Sha1Stream << "Hello";67 auto Hash = toHex(Sha1Stream.sha1());68 69 ASSERT_EQ("F7FF9E8B7BB2E09B70935A5D785E0CC5D9D0ABF0", Hash);70 Sha1Stream << " World!";71 Hash = toHex(Sha1Stream.sha1());72 73 // Compute the non-split hash separately as a reference.74 llvm::raw_sha1_ostream NonSplitSha1Stream;75 NonSplitSha1Stream << "Hello World!";76 auto NonSplitHash = toHex(NonSplitSha1Stream.sha1());77 78 ASSERT_EQ(NonSplitHash, Hash);79}80 81TEST(raw_sha1_ostreamTest, Reset) {82 llvm::raw_sha1_ostream Sha1Stream;83 Sha1Stream << "Hello";84 auto Hash = toHex(Sha1Stream.sha1());85 86 ASSERT_EQ("F7FF9E8B7BB2E09B70935A5D785E0CC5D9D0ABF0", Hash);87 88 Sha1Stream.resetHash();89 Sha1Stream << " World!";90 Hash = toHex(Sha1Stream.sha1());91 92 ASSERT_EQ("7447F2A5A42185C8CF91E632789C431830B59067", Hash);93}94