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74c634c6b8
Provide a class to generate a SHA1 from a sequence of bytes, and a convenience raw_ostream adaptor. This will be used to provide a "build-id" by hashing the Module block when writing bitcode. ThinLTO will use this information for incremental build. Reapply r265094 which was reverted in r265102 because it broke MSVC bots (constexpr is not supported). http://reviews.llvm.org/D16325 From: Mehdi Amini <mehdi.amini@apple.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@265107 91177308-0d34-0410-b5e6-96231b3b80d8
73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
//===- llvm/unittest/Support/raw_ostream_test.cpp - raw_ostream tests -----===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "gtest/gtest.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/raw_sha1_ostream.h"
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#include <string>
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using namespace llvm;
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static std::string toHex(StringRef Input) {
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static const char *const LUT = "0123456789ABCDEF";
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size_t Length = Input.size();
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std::string Output;
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Output.reserve(2 * Length);
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for (size_t i = 0; i < Length; ++i) {
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const unsigned char c = Input[i];
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Output.push_back(LUT[c >> 4]);
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Output.push_back(LUT[c & 15]);
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}
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return Output;
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}
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TEST(raw_sha1_ostreamTest, Basic) {
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llvm::raw_sha1_ostream Sha1Stream;
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Sha1Stream << "Hello World!";
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auto Hash = toHex(Sha1Stream.sha1());
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ASSERT_EQ("2EF7BDE608CE5404E97D5F042F95F89F1C232871", Hash);
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}
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// Check that getting the intermediate hash in the middle of the stream does
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// not invalidate the final result.
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TEST(raw_sha1_ostreamTest, Intermediate) {
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llvm::raw_sha1_ostream Sha1Stream;
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Sha1Stream << "Hello";
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auto Hash = toHex(Sha1Stream.sha1());
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ASSERT_EQ("F7FF9E8B7BB2E09B70935A5D785E0CC5D9D0ABF0", Hash);
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Sha1Stream << " World!";
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Hash = toHex(Sha1Stream.sha1());
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// Compute the non-split hash separately as a reference.
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llvm::raw_sha1_ostream NonSplitSha1Stream;
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NonSplitSha1Stream << "Hello World!";
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auto NonSplitHash = toHex(NonSplitSha1Stream.sha1());
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ASSERT_EQ(NonSplitHash, Hash);
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}
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TEST(raw_sha1_ostreamTest, Reset) {
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llvm::raw_sha1_ostream Sha1Stream;
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Sha1Stream << "Hello";
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auto Hash = toHex(Sha1Stream.sha1());
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ASSERT_EQ("F7FF9E8B7BB2E09B70935A5D785E0CC5D9D0ABF0", Hash);
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Sha1Stream.resetHash();
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Sha1Stream << " World!";
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Hash = toHex(Sha1Stream.sha1());
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ASSERT_EQ("7447F2A5A42185C8CF91E632789C431830B59067", Hash);
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}
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