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//===- llvm/unittest/Support/FileOutputBuffer.cpp - unit tests ------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/FileOutputBuffer.h"
#include "llvm/ADT/OwningPtr.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace llvm::sys;
#define ASSERT_NO_ERROR(x) \
if (error_code ASSERT_NO_ERROR_ec = x) { \
errs() << #x ": did not return errc::success.\n" \
<< "error number: " << ASSERT_NO_ERROR_ec.value() << "\n" \
<< "error message: " << ASSERT_NO_ERROR_ec.message() << "\n"; \
} else {}
namespace {
TEST(FileOutputBuffer, Test) {
// Create unique temporary directory for these tests
SmallString<128> TestDirectory;
{
ASSERT_NO_ERROR(
fs::createUniqueDirectory("FileOutputBuffer-test", TestDirectory));
}
// TEST 1: Verify commit case.
SmallString<128> File1(TestDirectory);
File1.append("/file1");
{
OwningPtr<FileOutputBuffer> Buffer;
ASSERT_NO_ERROR(FileOutputBuffer::create(File1, 8192, Buffer));
// Start buffer with special header.
memcpy(Buffer->getBufferStart(), "AABBCCDDEEFFGGHHIIJJ", 20);
// Write to end of buffer to verify it is writable.
memcpy(Buffer->getBufferEnd() - 20, "AABBCCDDEEFFGGHHIIJJ", 20);
// Commit buffer.
ASSERT_NO_ERROR(Buffer->commit());
}
// Verify file exists and starts with special header.
bool MagicMatches = false;
ASSERT_NO_ERROR(fs::has_magic(Twine(File1), Twine("AABBCCDDEEFFGGHHIIJJ"),
MagicMatches));
EXPECT_TRUE(MagicMatches);
// Verify file is correct size.
uint64_t File1Size;
ASSERT_NO_ERROR(fs::file_size(Twine(File1), File1Size));
ASSERT_EQ(File1Size, 8192ULL);
// TEST 2: Verify abort case.
SmallString<128> File2(TestDirectory);
File2.append("/file2");
{
OwningPtr<FileOutputBuffer> Buffer2;
ASSERT_NO_ERROR(FileOutputBuffer::create(File2, 8192, Buffer2));
// Fill buffer with special header.
memcpy(Buffer2->getBufferStart(), "AABBCCDDEEFFGGHHIIJJ", 20);
// Do *not* commit buffer.
}
// Verify file does not exist (because buffer not commited).
bool Exists = false;
ASSERT_NO_ERROR(fs::exists(Twine(File2), Exists));
EXPECT_FALSE(Exists);
// TEST 3: Verify sizing down case.
SmallString<128> File3(TestDirectory);
File3.append("/file3");
{
OwningPtr<FileOutputBuffer> Buffer;
ASSERT_NO_ERROR(FileOutputBuffer::create(File3, 8192000, Buffer));
// Start buffer with special header.
memcpy(Buffer->getBufferStart(), "AABBCCDDEEFFGGHHIIJJ", 20);
// Write to end of buffer to verify it is writable.
memcpy(Buffer->getBufferEnd() - 20, "AABBCCDDEEFFGGHHIIJJ", 20);
// Commit buffer, but size down to smaller size
ASSERT_NO_ERROR(Buffer->commit(5000));
}
// Verify file exists and starts with special header.
bool MagicMatches3 = false;
ASSERT_NO_ERROR(fs::has_magic(Twine(File3), Twine("AABBCCDDEEFFGGHHIIJJ"),
MagicMatches3));
EXPECT_TRUE(MagicMatches3);
// Verify file is correct size.
uint64_t File3Size;
ASSERT_NO_ERROR(fs::file_size(Twine(File3), File3Size));
ASSERT_EQ(File3Size, 5000ULL);
// TEST 4: Verify file can be made executable.
SmallString<128> File4(TestDirectory);
File4.append("/file4");
{
OwningPtr<FileOutputBuffer> Buffer;
ASSERT_NO_ERROR(FileOutputBuffer::create(File4, 8192, Buffer,
FileOutputBuffer::F_executable));
// Start buffer with special header.
memcpy(Buffer->getBufferStart(), "AABBCCDDEEFFGGHHIIJJ", 20);
// Commit buffer.
ASSERT_NO_ERROR(Buffer->commit());
}
// Verify file exists and is executable.
fs::file_status Status;
ASSERT_NO_ERROR(fs::status(Twine(File4), Status));
bool IsExecutable = (Status.permissions() & fs::owner_exe);
EXPECT_TRUE(IsExecutable);
// Clean up.
uint32_t RemovedCount;
ASSERT_NO_ERROR(fs::remove_all(TestDirectory.str(), RemovedCount));
}
} // anonymous namespace
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