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-exception
6 //
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
15 using namespace llvm;
16
toHex(StringRef Input)17 static std::string toHex(StringRef 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
TEST(raw_sha1_ostreamTest,Basic)31 TEST(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
TEST(sha1_hash_test,Basic)39 TEST(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({(const char *)Vec.data(), 20});
43 ASSERT_EQ("2EF7BDE608CE5404E97D5F042F95F89F1C232871", Hash);
44 }
45
TEST(sha1_hash_test,Update)46 TEST(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 does
63 // not invalidate the final result.
TEST(raw_sha1_ostreamTest,Intermediate)64 TEST(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
TEST(raw_sha1_ostreamTest,Reset)81 TEST(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