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