forked from OSchip/llvm-project
89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
//===- llvm/unittest/Support/TarWriterTest.cpp ----------------------------===//
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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 "llvm/Support/FileSystem.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/TarWriter.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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struct UstarHeader {
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char Name[100];
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char Mode[8];
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char Uid[8];
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char Gid[8];
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char Size[12];
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char Mtime[12];
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char Checksum[8];
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char TypeFlag;
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char Linkname[100];
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char Magic[6];
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char Version[2];
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char Uname[32];
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char Gname[32];
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char DevMajor[8];
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char DevMinor[8];
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char Prefix[155];
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char Pad[12];
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};
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class TarWriterTest : public ::testing::Test {};
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static UstarHeader create(StringRef Base, StringRef Filename) {
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// Create a temporary file.
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SmallString<128> Path;
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std::error_code EC =
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sys::fs::createTemporaryFile("TarWriterTest", "tar", Path);
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EXPECT_FALSE((bool)EC);
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// Create a tar file.
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Expected<std::unique_ptr<TarWriter>> TarOrErr = TarWriter::create(Path, Base);
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EXPECT_TRUE((bool)TarOrErr);
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std::unique_ptr<TarWriter> Tar = std::move(*TarOrErr);
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Tar->append(Filename, "contents");
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Tar.reset();
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// Read the tar file.
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ErrorOr<std::unique_ptr<MemoryBuffer>> MBOrErr = MemoryBuffer::getFile(Path);
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EXPECT_TRUE((bool)MBOrErr);
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std::unique_ptr<MemoryBuffer> MB = std::move(*MBOrErr);
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sys::fs::remove(Path);
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return *reinterpret_cast<const UstarHeader *>(MB->getBufferStart());
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}
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TEST_F(TarWriterTest, Basics) {
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UstarHeader Hdr = create("base", "file");
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ASSERT_EQ("ustar", StringRef(Hdr.Magic));
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ASSERT_EQ("00", StringRef(Hdr.Version, 2));
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ASSERT_EQ("base/file", StringRef(Hdr.Name));
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ASSERT_EQ("00000000010", StringRef(Hdr.Size));
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}
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TEST_F(TarWriterTest, LongFilename) {
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UstarHeader Hdr1 = create(
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"012345678", std::string(99, 'x') + "/" + std::string(44, 'x') + "/foo");
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ASSERT_EQ("foo", StringRef(Hdr1.Name));
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ASSERT_EQ("012345678/" + std::string(99, 'x') + "/" + std::string(44, 'x'),
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StringRef(Hdr1.Prefix));
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UstarHeader Hdr2 = create(
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"012345678", std::string(99, 'x') + "/" + std::string(45, 'x') + "/foo");
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ASSERT_EQ("foo", StringRef(Hdr2.Name));
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ASSERT_EQ("012345678/" + std::string(99, 'x') + "/" + std::string(45, 'x'),
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StringRef(Hdr2.Prefix));
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UstarHeader Hdr3 = create(
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"012345678", std::string(99, 'x') + "/" + std::string(46, 'x') + "/foo");
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ASSERT_EQ(std::string(46, 'x') + "/foo", StringRef(Hdr3.Name));
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ASSERT_EQ("012345678/" + std::string(99, 'x'), StringRef(Hdr3.Prefix));
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}
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}
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