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1 //===- llvm/unittest/Support/raw_ostream_test.cpp - raw_ostream tests -----===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9
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10 #include "llvm/Support/Format.h"
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11 #include "llvm/Support/raw_sha1_ostream.h"
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12 #include "gtest/gtest.h"
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13
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14 #include <string>
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15
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16 using namespace llvm;
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17
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18 static std::string toHex(StringRef Input) {
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19 static const char *const LUT = "0123456789ABCDEF";
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20 size_t Length = Input.size();
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21
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22 std::string Output;
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23 Output.reserve(2 * Length);
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24 for (size_t i = 0; i < Length; ++i) {
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25 const unsigned char c = Input[i];
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26 Output.push_back(LUT[c >> 4]);
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27 Output.push_back(LUT[c & 15]);
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28 }
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29 return Output;
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30 }
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31
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32 TEST(raw_sha1_ostreamTest, Basic) {
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33 llvm::raw_sha1_ostream Sha1Stream;
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34 Sha1Stream << "Hello World!";
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35 auto Hash = toHex(Sha1Stream.sha1());
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36
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37 ASSERT_EQ("2EF7BDE608CE5404E97D5F042F95F89F1C232871", Hash);
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38 }
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39
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40 TEST(sha1_hash_test, Basic) {
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41 ArrayRef<uint8_t> Input((const uint8_t *)"Hello World!", 12);
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42 std::array<uint8_t, 20> Vec = SHA1::hash(Input);
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43 std::string Hash = toHex({(const char *)Vec.data(), 20});
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44 ASSERT_EQ("2EF7BDE608CE5404E97D5F042F95F89F1C232871", Hash);
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45 }
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46
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47 // Check that getting the intermediate hash in the middle of the stream does
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48 // not invalidate the final result.
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49 TEST(raw_sha1_ostreamTest, Intermediate) {
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50 llvm::raw_sha1_ostream Sha1Stream;
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51 Sha1Stream << "Hello";
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52 auto Hash = toHex(Sha1Stream.sha1());
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53
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54 ASSERT_EQ("F7FF9E8B7BB2E09B70935A5D785E0CC5D9D0ABF0", Hash);
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55 Sha1Stream << " World!";
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56 Hash = toHex(Sha1Stream.sha1());
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57
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58 // Compute the non-split hash separately as a reference.
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59 llvm::raw_sha1_ostream NonSplitSha1Stream;
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60 NonSplitSha1Stream << "Hello World!";
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61 auto NonSplitHash = toHex(NonSplitSha1Stream.sha1());
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62
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63 ASSERT_EQ(NonSplitHash, Hash);
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64 }
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65
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66 TEST(raw_sha1_ostreamTest, Reset) {
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67 llvm::raw_sha1_ostream Sha1Stream;
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68 Sha1Stream << "Hello";
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69 auto Hash = toHex(Sha1Stream.sha1());
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70
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71 ASSERT_EQ("F7FF9E8B7BB2E09B70935A5D785E0CC5D9D0ABF0", Hash);
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72
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73 Sha1Stream.resetHash();
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74 Sha1Stream << " World!";
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75 Hash = toHex(Sha1Stream.sha1());
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76
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77 ASSERT_EQ("7447F2A5A42185C8CF91E632789C431830B59067", Hash);
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78 }
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