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There are a few valid situation where we care about the structure inside a directory, but not about the directory itself. A simple example is for unit testing directory traversal. PathV1 had a function like this, add one to V2 and port existing users of the created temp file and delete it hack to using it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185059 91177308-0d34-0410-b5e6-96231b3b80d8
121 lines
4.3 KiB
C++
121 lines
4.3 KiB
C++
//===- llvm/unittest/Support/FileOutputBuffer.cpp - unit 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 "llvm/Support/FileOutputBuffer.h"
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#include "llvm/ADT/OwningPtr.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/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 (error_code ASSERT_NO_ERROR_ec = x) { \
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errs() << #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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} else {}
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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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OwningPtr<FileOutputBuffer> Buffer;
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ASSERT_NO_ERROR(FileOutputBuffer::create(File1, 8192, Buffer));
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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(Buffer->commit());
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}
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// Verify file exists and starts with special header.
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bool MagicMatches = false;
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ASSERT_NO_ERROR(fs::has_magic(Twine(File1), Twine("AABBCCDDEEFFGGHHIIJJ"),
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MagicMatches));
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EXPECT_TRUE(MagicMatches);
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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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// 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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OwningPtr<FileOutputBuffer> Buffer2;
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ASSERT_NO_ERROR(FileOutputBuffer::create(File2, 8192, Buffer2));
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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 commited).
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bool Exists = false;
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ASSERT_NO_ERROR(fs::exists(Twine(File2), Exists));
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EXPECT_FALSE(Exists);
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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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OwningPtr<FileOutputBuffer> Buffer;
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ASSERT_NO_ERROR(FileOutputBuffer::create(File3, 8192000, Buffer));
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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, but size down to smaller size
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ASSERT_NO_ERROR(Buffer->commit(5000));
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}
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// Verify file exists and starts with special header.
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bool MagicMatches3 = false;
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ASSERT_NO_ERROR(fs::has_magic(Twine(File3), Twine("AABBCCDDEEFFGGHHIIJJ"),
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MagicMatches3));
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EXPECT_TRUE(MagicMatches3);
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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, 5000ULL);
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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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OwningPtr<FileOutputBuffer> Buffer;
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ASSERT_NO_ERROR(FileOutputBuffer::create(File4, 8192, Buffer,
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FileOutputBuffer::F_executable));
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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(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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// Clean up.
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uint32_t RemovedCount;
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ASSERT_NO_ERROR(fs::remove_all(TestDirectory.str(), RemovedCount));
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}
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} // anonymous namespace
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