1 //===- llvm/unittest/Support/FileOutputBuffer.cpp - unit tests ------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "llvm/Support/FileOutputBuffer.h" 11 #include "llvm/Support/Errc.h" 12 #include "llvm/Support/ErrorHandling.h" 13 #include "llvm/Support/FileSystem.h" 14 #include "llvm/Support/Path.h" 15 #include "llvm/Support/raw_ostream.h" 16 #include "gtest/gtest.h" 17 18 using namespace llvm; 19 using namespace llvm::sys; 20 21 #define ASSERT_NO_ERROR(x) \ 22 if (std::error_code ASSERT_NO_ERROR_ec = x) { \ 23 SmallString<128> MessageStorage; \ 24 raw_svector_ostream Message(MessageStorage); \ 25 Message << #x ": did not return errc::success.\n" \ 26 << "error number: " << ASSERT_NO_ERROR_ec.value() << "\n" \ 27 << "error message: " << ASSERT_NO_ERROR_ec.message() << "\n"; \ 28 GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \ 29 } else { \ 30 } 31 32 namespace { 33 TEST(FileOutputBuffer, Test) { 34 // Create unique temporary directory for these tests 35 SmallString<128> TestDirectory; 36 { 37 ASSERT_NO_ERROR( 38 fs::createUniqueDirectory("FileOutputBuffer-test", TestDirectory)); 39 } 40 41 // TEST 1: Verify commit case. 42 SmallString<128> File1(TestDirectory); 43 File1.append("/file1"); 44 { 45 Expected<std::unique_ptr<FileOutputBuffer>> BufferOrErr = 46 FileOutputBuffer::create(File1, 8192); 47 ASSERT_NO_ERROR(errorToErrorCode(BufferOrErr.takeError())); 48 std::unique_ptr<FileOutputBuffer> &Buffer = *BufferOrErr; 49 // Start buffer with special header. 50 memcpy(Buffer->getBufferStart(), "AABBCCDDEEFFGGHHIIJJ", 20); 51 // Write to end of buffer to verify it is writable. 52 memcpy(Buffer->getBufferEnd() - 20, "AABBCCDDEEFFGGHHIIJJ", 20); 53 // Commit buffer. 54 ASSERT_NO_ERROR(errorToErrorCode(Buffer->commit())); 55 } 56 57 // Verify file is correct size. 58 uint64_t File1Size; 59 ASSERT_NO_ERROR(fs::file_size(Twine(File1), File1Size)); 60 ASSERT_EQ(File1Size, 8192ULL); 61 ASSERT_NO_ERROR(fs::remove(File1.str())); 62 63 // TEST 2: Verify abort case. 64 SmallString<128> File2(TestDirectory); 65 File2.append("/file2"); 66 { 67 Expected<std::unique_ptr<FileOutputBuffer>> Buffer2OrErr = 68 FileOutputBuffer::create(File2, 8192); 69 ASSERT_NO_ERROR(errorToErrorCode(Buffer2OrErr.takeError())); 70 std::unique_ptr<FileOutputBuffer> &Buffer2 = *Buffer2OrErr; 71 // Fill buffer with special header. 72 memcpy(Buffer2->getBufferStart(), "AABBCCDDEEFFGGHHIIJJ", 20); 73 // Do *not* commit buffer. 74 } 75 // Verify file does not exist (because buffer not committed). 76 ASSERT_EQ(fs::access(Twine(File2), fs::AccessMode::Exist), 77 errc::no_such_file_or_directory); 78 ASSERT_NO_ERROR(fs::remove(File2.str())); 79 80 // TEST 3: Verify sizing down case. 81 SmallString<128> File3(TestDirectory); 82 File3.append("/file3"); 83 { 84 Expected<std::unique_ptr<FileOutputBuffer>> BufferOrErr = 85 FileOutputBuffer::create(File3, 8192000); 86 ASSERT_NO_ERROR(errorToErrorCode(BufferOrErr.takeError())); 87 std::unique_ptr<FileOutputBuffer> &Buffer = *BufferOrErr; 88 // Start buffer with special header. 89 memcpy(Buffer->getBufferStart(), "AABBCCDDEEFFGGHHIIJJ", 20); 90 // Write to end of buffer to verify it is writable. 91 memcpy(Buffer->getBufferEnd() - 20, "AABBCCDDEEFFGGHHIIJJ", 20); 92 ASSERT_NO_ERROR(errorToErrorCode(Buffer->commit())); 93 } 94 95 // Verify file is correct size. 96 uint64_t File3Size; 97 ASSERT_NO_ERROR(fs::file_size(Twine(File3), File3Size)); 98 ASSERT_EQ(File3Size, 8192000ULL); 99 ASSERT_NO_ERROR(fs::remove(File3.str())); 100 101 // TEST 4: Verify file can be made executable. 102 SmallString<128> File4(TestDirectory); 103 File4.append("/file4"); 104 { 105 Expected<std::unique_ptr<FileOutputBuffer>> BufferOrErr = 106 FileOutputBuffer::create(File4, 8192, FileOutputBuffer::F_executable); 107 ASSERT_NO_ERROR(errorToErrorCode(BufferOrErr.takeError())); 108 std::unique_ptr<FileOutputBuffer> &Buffer = *BufferOrErr; 109 // Start buffer with special header. 110 memcpy(Buffer->getBufferStart(), "AABBCCDDEEFFGGHHIIJJ", 20); 111 // Commit buffer. 112 ASSERT_NO_ERROR(errorToErrorCode(Buffer->commit())); 113 } 114 // Verify file exists and is executable. 115 fs::file_status Status; 116 ASSERT_NO_ERROR(fs::status(Twine(File4), Status)); 117 bool IsExecutable = (Status.permissions() & fs::owner_exe); 118 EXPECT_TRUE(IsExecutable); 119 ASSERT_NO_ERROR(fs::remove(File4.str())); 120 121 // Clean up. 122 ASSERT_NO_ERROR(fs::remove(TestDirectory.str())); 123 } 124 } // anonymous namespace 125