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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/PathV2.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;
- {
- int fd;
- ASSERT_NO_ERROR(
- fs::unique_file("FileOutputBuffer-test-%%-%%-%%-%%/dir", fd,
- TestDirectory));
- ::close(fd);
- TestDirectory = path::parent_path(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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