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125 lines
4.9 KiB
C++
125 lines
4.9 KiB
C++
//===- llvm/unittest/Support/FileOutputBuffer.cpp - unit tests ------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/FileOutputBuffer.h"
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#include "llvm/Support/Errc.h"
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#include "llvm/Support/ErrorHandling.h"
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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/Path.h"
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#include "llvm/Support/raw_ostream.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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using namespace llvm::sys;
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#define ASSERT_NO_ERROR(x) \
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if (std::error_code ASSERT_NO_ERROR_ec = x) { \
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SmallString<128> MessageStorage; \
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raw_svector_ostream Message(MessageStorage); \
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Message << #x ": did not return errc::success.\n" \
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<< "error number: " << ASSERT_NO_ERROR_ec.value() << "\n" \
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<< "error message: " << ASSERT_NO_ERROR_ec.message() << "\n"; \
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GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \
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} else { \
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}
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namespace {
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TEST(FileOutputBuffer, Test) {
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// Create unique temporary directory for these tests
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SmallString<128> TestDirectory;
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{
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ASSERT_NO_ERROR(
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fs::createUniqueDirectory("FileOutputBuffer-test", TestDirectory));
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}
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// TEST 1: Verify commit case.
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SmallString<128> File1(TestDirectory);
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File1.append("/file1");
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{
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Expected<std::unique_ptr<FileOutputBuffer>> BufferOrErr =
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FileOutputBuffer::create(File1, 8192);
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ASSERT_NO_ERROR(errorToErrorCode(BufferOrErr.takeError()));
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std::unique_ptr<FileOutputBuffer> &Buffer = *BufferOrErr;
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// Start buffer with special header.
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memcpy(Buffer->getBufferStart(), "AABBCCDDEEFFGGHHIIJJ", 20);
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// Write to end of buffer to verify it is writable.
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memcpy(Buffer->getBufferEnd() - 20, "AABBCCDDEEFFGGHHIIJJ", 20);
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// Commit buffer.
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ASSERT_NO_ERROR(errorToErrorCode(Buffer->commit()));
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}
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// Verify file is correct size.
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uint64_t File1Size;
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ASSERT_NO_ERROR(fs::file_size(Twine(File1), File1Size));
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ASSERT_EQ(File1Size, 8192ULL);
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ASSERT_NO_ERROR(fs::remove(File1.str()));
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// TEST 2: Verify abort case.
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SmallString<128> File2(TestDirectory);
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File2.append("/file2");
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{
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Expected<std::unique_ptr<FileOutputBuffer>> Buffer2OrErr =
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FileOutputBuffer::create(File2, 8192);
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ASSERT_NO_ERROR(errorToErrorCode(Buffer2OrErr.takeError()));
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std::unique_ptr<FileOutputBuffer> &Buffer2 = *Buffer2OrErr;
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// Fill buffer with special header.
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memcpy(Buffer2->getBufferStart(), "AABBCCDDEEFFGGHHIIJJ", 20);
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// Do *not* commit buffer.
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}
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// Verify file does not exist (because buffer not committed).
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ASSERT_EQ(fs::access(Twine(File2), fs::AccessMode::Exist),
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errc::no_such_file_or_directory);
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ASSERT_NO_ERROR(fs::remove(File2.str()));
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// TEST 3: Verify sizing down case.
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SmallString<128> File3(TestDirectory);
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File3.append("/file3");
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{
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Expected<std::unique_ptr<FileOutputBuffer>> BufferOrErr =
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FileOutputBuffer::create(File3, 8192000);
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ASSERT_NO_ERROR(errorToErrorCode(BufferOrErr.takeError()));
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std::unique_ptr<FileOutputBuffer> &Buffer = *BufferOrErr;
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// Start buffer with special header.
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memcpy(Buffer->getBufferStart(), "AABBCCDDEEFFGGHHIIJJ", 20);
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// Write to end of buffer to verify it is writable.
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memcpy(Buffer->getBufferEnd() - 20, "AABBCCDDEEFFGGHHIIJJ", 20);
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ASSERT_NO_ERROR(errorToErrorCode(Buffer->commit()));
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}
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// Verify file is correct size.
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uint64_t File3Size;
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ASSERT_NO_ERROR(fs::file_size(Twine(File3), File3Size));
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ASSERT_EQ(File3Size, 8192000ULL);
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ASSERT_NO_ERROR(fs::remove(File3.str()));
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// TEST 4: Verify file can be made executable.
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SmallString<128> File4(TestDirectory);
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File4.append("/file4");
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{
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Expected<std::unique_ptr<FileOutputBuffer>> BufferOrErr =
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FileOutputBuffer::create(File4, 8192, FileOutputBuffer::F_executable);
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ASSERT_NO_ERROR(errorToErrorCode(BufferOrErr.takeError()));
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std::unique_ptr<FileOutputBuffer> &Buffer = *BufferOrErr;
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// Start buffer with special header.
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memcpy(Buffer->getBufferStart(), "AABBCCDDEEFFGGHHIIJJ", 20);
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// Commit buffer.
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ASSERT_NO_ERROR(errorToErrorCode(Buffer->commit()));
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}
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// Verify file exists and is executable.
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fs::file_status Status;
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ASSERT_NO_ERROR(fs::status(Twine(File4), Status));
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bool IsExecutable = (Status.permissions() & fs::owner_exe);
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EXPECT_TRUE(IsExecutable);
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ASSERT_NO_ERROR(fs::remove(File4.str()));
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// Clean up.
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ASSERT_NO_ERROR(fs::remove(TestDirectory.str()));
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}
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} // anonymous namespace
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