Update Crashpad to 8e37886d418dd042c3c7bfadac99214739ee4d98

third_party/crashpad/crashpad/util/file/file_io_test.cc

 // Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include "util/file/file_io.h"
 
+#include <stdio.h>
+
+#include <limits>
+#include <type_traits>
+
 #include "base/atomicops.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
+#include "gmock/gmock.h"
 #include "gtest/gtest.h"
 #include "test/errors.h"
 #include "test/file.h"
 #include "test/scoped_temp_dir.h"
 #include "util/misc/implicit_cast.h"
 #include "util/thread/thread.h"
 
 namespace crashpad {
 namespace test {
 namespace {
 
+using testing::_;
+using testing::InSequence;
+using testing::Return;
+
+class MockReadExactly : public internal::ReadExactlyInternal {
+ public:
+  MockReadExactly() : ReadExactlyInternal() {}
+  ~MockReadExactly() {}
+
+  // Since it’s more convenient for the test to use uintptr_t than void*,
+  // ReadExactlyInt() and ReadInt() adapt the types.
+
+  bool ReadExactlyInt(uintptr_t data, size_t size, bool can_log) {
+    return ReadExactly(reinterpret_cast<void*>(data), size, can_log);
+  }
+
+  MOCK_METHOD3(ReadInt, FileOperationResult(uintptr_t, size_t, bool));
+
+  // ReadExactlyInternal:
+  FileOperationResult Read(void* data, size_t size, bool can_log) {
+    return ReadInt(reinterpret_cast<uintptr_t>(data), size, can_log);
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockReadExactly);
+};
+
+TEST(FileIO, ReadExactly_Zero) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  EXPECT_CALL(read_exactly, ReadInt(_, _, false)).Times(0);
+  EXPECT_TRUE(read_exactly.ReadExactlyInt(100, 0, false));
+}
+
+TEST(FileIO, ReadExactly_SingleSmallSuccess) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  EXPECT_CALL(read_exactly, ReadInt(1000, 1, false)).WillOnce(Return(1));
+  EXPECT_TRUE(read_exactly.ReadExactlyInt(1000, 1, false));
+}
+
+TEST(FileIO, ReadExactly_SingleSmallSuccessCanLog) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  EXPECT_CALL(read_exactly, ReadInt(1000, 1, true)).WillOnce(Return(1));
+  EXPECT_TRUE(read_exactly.ReadExactlyInt(1000, 1, true));
+}
+
+TEST(FileIO, ReadExactly_SingleSmallFailure) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  EXPECT_CALL(read_exactly, ReadInt(1000, 1, false)).WillOnce(Return(-1));
+  EXPECT_FALSE(read_exactly.ReadExactlyInt(1000, 1, false));
+}
+
+TEST(FileIO, ReadExactly_SingleSmallFailureCanLog) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  EXPECT_CALL(read_exactly, ReadInt(1000, 1, true)).WillOnce(Return(-1));
+  EXPECT_FALSE(read_exactly.ReadExactlyInt(1000, 1, true));
+}
+
+TEST(FileIO, ReadExactly_DoubleSmallSuccess) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  EXPECT_CALL(read_exactly, ReadInt(0x1000, 2, false)).WillOnce(Return(1));
+  EXPECT_CALL(read_exactly, ReadInt(0x1001, 1, false)).WillOnce(Return(1));
+  EXPECT_TRUE(read_exactly.ReadExactlyInt(0x1000, 2, false));
+}
+
+TEST(FileIO, ReadExactly_DoubleSmallShort) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  EXPECT_CALL(read_exactly, ReadInt(0x20000, 2, false)).WillOnce(Return(1));
+  EXPECT_CALL(read_exactly, ReadInt(0x20001, 1, false)).WillOnce(Return(0));
+  EXPECT_FALSE(read_exactly.ReadExactlyInt(0x20000, 2, false));
+}
+
+TEST(FileIO, ReadExactly_DoubleSmallShortCanLog) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  EXPECT_CALL(read_exactly, ReadInt(0x20000, 2, true)).WillOnce(Return(1));
+  EXPECT_CALL(read_exactly, ReadInt(0x20001, 1, true)).WillOnce(Return(0));
+  EXPECT_FALSE(read_exactly.ReadExactlyInt(0x20000, 2, true));
+}
+
+TEST(FileIO, ReadExactly_Medium) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  EXPECT_CALL(read_exactly, ReadInt(0x80000000, 0x20000000, false))
+      .WillOnce(Return(0x10000000));
+  EXPECT_CALL(read_exactly, ReadInt(0x90000000, 0x10000000, false))
+      .WillOnce(Return(0x8000000));
+  EXPECT_CALL(read_exactly, ReadInt(0x98000000, 0x8000000, false))
+      .WillOnce(Return(0x4000000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9c000000, 0x4000000, false))
+      .WillOnce(Return(0x2000000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9e000000, 0x2000000, false))
+      .WillOnce(Return(0x1000000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9f000000, 0x1000000, false))
+      .WillOnce(Return(0x800000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9f800000, 0x800000, false))
+      .WillOnce(Return(0x400000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9fc00000, 0x400000, false))
+      .WillOnce(Return(0x200000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9fe00000, 0x200000, false))
+      .WillOnce(Return(0x100000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9ff00000, 0x100000, false))
+      .WillOnce(Return(0x80000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9ff80000, 0x80000, false))
+      .WillOnce(Return(0x40000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9ffc0000, 0x40000, false))
+      .WillOnce(Return(0x20000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9ffe0000, 0x20000, false))
+      .WillOnce(Return(0x10000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9fff0000, 0x10000, false))
+      .WillOnce(Return(0x8000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9fff8000, 0x8000, false))
+      .WillOnce(Return(0x4000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9fffc000, 0x4000, false))
+      .WillOnce(Return(0x2000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9fffe000, 0x2000, false))
+      .WillOnce(Return(0x1000));
+  EXPECT_CALL(read_exactly, ReadInt(0x9ffff000, 0x1000, false))
+      .WillOnce(Return(0x800));
+  EXPECT_CALL(read_exactly, ReadInt(0x9ffff800, 0x800, false))
+      .WillOnce(Return(0x400));
+  EXPECT_CALL(read_exactly, ReadInt(0x9ffffc00, 0x400, false))
+      .WillOnce(Return(0x200));
+  EXPECT_CALL(read_exactly, ReadInt(0x9ffffe00, 0x200, false))
+      .WillOnce(Return(0x100));
+  EXPECT_CALL(read_exactly, ReadInt(0x9fffff00, 0x100, false))
+      .WillOnce(Return(0x80));
+  EXPECT_CALL(read_exactly, ReadInt(0x9fffff80, 0x80, false))
+      .WillOnce(Return(0x40));
+  EXPECT_CALL(read_exactly, ReadInt(0x9fffffc0, 0x40, false))
+      .WillOnce(Return(0x20));
+  EXPECT_CALL(read_exactly, ReadInt(0x9fffffe0, 0x20, false))
+      .WillOnce(Return(0x10));
+  EXPECT_CALL(read_exactly, ReadInt(0x9ffffff0, 0x10, false))
+      .WillOnce(Return(0x8));
+  EXPECT_CALL(read_exactly, ReadInt(0x9ffffff8, 0x8, false))
+      .WillOnce(Return(0x4));
+  EXPECT_CALL(read_exactly, ReadInt(0x9ffffffc, 0x4, false))
+      .WillOnce(Return(0x2));
+  EXPECT_CALL(read_exactly, ReadInt(0x9ffffffe, 0x2, false))
+      .WillOnce(Return(0x1));
+  EXPECT_CALL(read_exactly, ReadInt(0x9fffffff, 0x1, false))
+      .WillOnce(Return(0x1));
+  EXPECT_TRUE(read_exactly.ReadExactlyInt(0x80000000, 0x20000000, false));
+}
+
+TEST(FileIO, ReadExactly_LargeSuccess) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  constexpr size_t max = std::numeric_limits<uint32_t>::max();
+  constexpr size_t increment = std::numeric_limits<int32_t>::max();
+  EXPECT_CALL(read_exactly, ReadInt(0, max, false)).WillOnce(Return(increment));
+  EXPECT_CALL(read_exactly, ReadInt(increment, max - increment, false))
+      .WillOnce(Return(increment));
+  EXPECT_CALL(read_exactly, ReadInt(2 * increment, 1, false))
+      .WillOnce(Return(1));
+  EXPECT_TRUE(read_exactly.ReadExactlyInt(0, max, false));
+}
+
+TEST(FileIO, ReadExactly_LargeShort) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  EXPECT_CALL(read_exactly, ReadInt(0, 0xffffffff, false))
+      .WillOnce(Return(0x7fffffff));
+  EXPECT_CALL(read_exactly, ReadInt(0x7fffffff, 0x80000000, false))
+      .WillOnce(Return(0x10000000));
+  EXPECT_CALL(read_exactly, ReadInt(0x8fffffff, 0x70000000, false))
+      .WillOnce(Return(0));
+  EXPECT_FALSE(read_exactly.ReadExactlyInt(0, 0xffffffff, false));
+}
+
+TEST(FileIO, ReadExactly_LargeFailure) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  EXPECT_CALL(read_exactly, ReadInt(0, 0xffffffff, false))
+      .WillOnce(Return(0x7fffffff));
+  EXPECT_CALL(read_exactly, ReadInt(0x7fffffff, 0x80000000, false))
+      .WillOnce(Return(-1));
+  EXPECT_FALSE(read_exactly.ReadExactlyInt(0, 0xffffffff, false));
+}
+
+TEST(FileIO, ReadExactly_TripleMax) {
+  MockReadExactly read_exactly;
+  InSequence in_sequence;
+  constexpr size_t max = std::numeric_limits<size_t>::max();
+  constexpr size_t increment =
+      std::numeric_limits<std::make_signed<size_t>::type>::max();
+  EXPECT_CALL(read_exactly, ReadInt(0, max, false)).WillOnce(Return(increment));
+  EXPECT_CALL(read_exactly, ReadInt(increment, max - increment, false))
+      .WillOnce(Return(increment));
+  EXPECT_CALL(read_exactly, ReadInt(2 * increment, 1, false))
+      .WillOnce(Return(1));
+  EXPECT_TRUE(read_exactly.ReadExactlyInt(0, max, false));
+}
+
+class MockWriteAll : public internal::WriteAllInternal {
+ public:
+  MockWriteAll() : WriteAllInternal() {}
+  ~MockWriteAll() {}
+
+  // Since it’s more convenient for the test to use uintptr_t than const void*,
+  // WriteAllInt() and WriteInt() adapt the types.
+
+  bool WriteAllInt(uintptr_t data, size_t size) {
+    return WriteAll(reinterpret_cast<const void*>(data), size);
+  }
+
+  MOCK_METHOD2(WriteInt, FileOperationResult(uintptr_t, size_t));
+
+  // WriteAllInternal:
+  FileOperationResult Write(const void* data, size_t size) {
+    return WriteInt(reinterpret_cast<uintptr_t>(data), size);
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockWriteAll);
+};
+
+TEST(FileIO, WriteAll_Zero) {
+  MockWriteAll write_all;
+  InSequence in_sequence;
+  EXPECT_CALL(write_all, WriteInt(_, _)).Times(0);
+  EXPECT_TRUE(write_all.WriteAllInt(100, 0));
+}
+
+TEST(FileIO, WriteAll_SingleSmallSuccess) {
+  MockWriteAll write_all;
+  InSequence in_sequence;
+  EXPECT_CALL(write_all, WriteInt(1000, 1)).WillOnce(Return(1));
+  EXPECT_TRUE(write_all.WriteAllInt(1000, 1));
+}
+
+TEST(FileIO, WriteAll_SingleSmallFailure) {
+  MockWriteAll write_all;
+  InSequence in_sequence;
+  EXPECT_CALL(write_all, WriteInt(1000, 1)).WillOnce(Return(-1));
+  EXPECT_FALSE(write_all.WriteAllInt(1000, 1));
+}
+
+TEST(FileIO, WriteAll_DoubleSmall) {
+  MockWriteAll write_all;
+  InSequence in_sequence;
+  EXPECT_CALL(write_all, WriteInt(0x1000, 2)).WillOnce(Return(1));
+  EXPECT_CALL(write_all, WriteInt(0x1001, 1)).WillOnce(Return(1));
+  EXPECT_TRUE(write_all.WriteAllInt(0x1000, 2));
+}
+
+TEST(FileIO, WriteAll_Medium) {
+  MockWriteAll write_all;
+  InSequence in_sequence;
+  EXPECT_CALL(write_all, WriteInt(0x80000000, 0x20000000))
+      .WillOnce(Return(0x10000000));
+  EXPECT_CALL(write_all, WriteInt(0x90000000, 0x10000000))
+      .WillOnce(Return(0x8000000));
+  EXPECT_CALL(write_all, WriteInt(0x98000000, 0x8000000))
+      .WillOnce(Return(0x4000000));
+  EXPECT_CALL(write_all, WriteInt(0x9c000000, 0x4000000))
+      .WillOnce(Return(0x2000000));
+  EXPECT_CALL(write_all, WriteInt(0x9e000000, 0x2000000))
+      .WillOnce(Return(0x1000000));
+  EXPECT_CALL(write_all, WriteInt(0x9f000000, 0x1000000))
+      .WillOnce(Return(0x800000));
+  EXPECT_CALL(write_all, WriteInt(0x9f800000, 0x800000))
+      .WillOnce(Return(0x400000));
+  EXPECT_CALL(write_all, WriteInt(0x9fc00000, 0x400000))
+      .WillOnce(Return(0x200000));
+  EXPECT_CALL(write_all, WriteInt(0x9fe00000, 0x200000))
+      .WillOnce(Return(0x100000));
+  EXPECT_CALL(write_all, WriteInt(0x9ff00000, 0x100000))
+      .WillOnce(Return(0x80000));
+  EXPECT_CALL(write_all, WriteInt(0x9ff80000, 0x80000))
+      .WillOnce(Return(0x40000));
+  EXPECT_CALL(write_all, WriteInt(0x9ffc0000, 0x40000))
+      .WillOnce(Return(0x20000));
+  EXPECT_CALL(write_all, WriteInt(0x9ffe0000, 0x20000))
+      .WillOnce(Return(0x10000));
+  EXPECT_CALL(write_all, WriteInt(0x9fff0000, 0x10000))
+      .WillOnce(Return(0x8000));
+  EXPECT_CALL(write_all, WriteInt(0x9fff8000, 0x8000)).WillOnce(Return(0x4000));
+  EXPECT_CALL(write_all, WriteInt(0x9fffc000, 0x4000)).WillOnce(Return(0x2000));
+  EXPECT_CALL(write_all, WriteInt(0x9fffe000, 0x2000)).WillOnce(Return(0x1000));
+  EXPECT_CALL(write_all, WriteInt(0x9ffff000, 0x1000)).WillOnce(Return(0x800));
+  EXPECT_CALL(write_all, WriteInt(0x9ffff800, 0x800)).WillOnce(Return(0x400));
+  EXPECT_CALL(write_all, WriteInt(0x9ffffc00, 0x400)).WillOnce(Return(0x200));
+  EXPECT_CALL(write_all, WriteInt(0x9ffffe00, 0x200)).WillOnce(Return(0x100));
+  EXPECT_CALL(write_all, WriteInt(0x9fffff00, 0x100)).WillOnce(Return(0x80));
+  EXPECT_CALL(write_all, WriteInt(0x9fffff80, 0x80)).WillOnce(Return(0x40));
+  EXPECT_CALL(write_all, WriteInt(0x9fffffc0, 0x40)).WillOnce(Return(0x20));
+  EXPECT_CALL(write_all, WriteInt(0x9fffffe0, 0x20)).WillOnce(Return(0x10));
+  EXPECT_CALL(write_all, WriteInt(0x9ffffff0, 0x10)).WillOnce(Return(0x8));
+  EXPECT_CALL(write_all, WriteInt(0x9ffffff8, 0x8)).WillOnce(Return(0x4));
+  EXPECT_CALL(write_all, WriteInt(0x9ffffffc, 0x4)).WillOnce(Return(0x2));
+  EXPECT_CALL(write_all, WriteInt(0x9ffffffe, 0x2)).WillOnce(Return(0x1));
+  EXPECT_CALL(write_all, WriteInt(0x9fffffff, 0x1)).WillOnce(Return(0x1));
+  EXPECT_TRUE(write_all.WriteAllInt(0x80000000, 0x20000000));
+}
+
+TEST(FileIO, WriteAll_LargeSuccess) {
+  MockWriteAll write_all;
+  InSequence in_sequence;
+  constexpr size_t max = std::numeric_limits<uint32_t>::max();
+  constexpr size_t increment = std::numeric_limits<int32_t>::max();
+  EXPECT_CALL(write_all, WriteInt(0, max)).WillOnce(Return(increment));
+  EXPECT_CALL(write_all, WriteInt(increment, max - increment))
+      .WillOnce(Return(increment));
+  EXPECT_CALL(write_all, WriteInt(2 * increment, 1)).WillOnce(Return(1));
+  EXPECT_TRUE(write_all.WriteAllInt(0, max));
+}
+
+TEST(FileIO, WriteAll_LargeFailure) {
+  MockWriteAll write_all;
+  InSequence in_sequence;
+  EXPECT_CALL(write_all, WriteInt(0, 0xffffffff)).WillOnce(Return(0x7fffffff));
+  EXPECT_CALL(write_all, WriteInt(0x7fffffff, 0x80000000)).WillOnce(Return(-1));
+  EXPECT_FALSE(write_all.WriteAllInt(0, 0xffffffff));
+}
+
+TEST(FileIO, WriteAll_TripleMax) {
+  MockWriteAll write_all;
+  InSequence in_sequence;
+  constexpr size_t max = std::numeric_limits<size_t>::max();
+  constexpr size_t increment =
+      std::numeric_limits<std::make_signed<size_t>::type>::max();
+  EXPECT_CALL(write_all, WriteInt(0, max)).WillOnce(Return(increment));
+  EXPECT_CALL(write_all, WriteInt(increment, max - increment))
+      .WillOnce(Return(increment));
+  EXPECT_CALL(write_all, WriteInt(2 * increment, 1)).WillOnce(Return(1));
+  EXPECT_TRUE(write_all.WriteAllInt(0, max));
+}
+
 void TestOpenFileForWrite(FileHandle (*opener)(const base::FilePath&,
                                                FileWriteMode,
                                                FilePermissions)) {
   ScopedTempDir temp_dir;
   base::FilePath file_path_1 =
       temp_dir.path().Append(FILE_PATH_LITERAL("file_1"));
   ASSERT_FALSE(FileExists(file_path_1));
 
   ScopedFileHandle file_handle(opener(file_path_1,
                                       FileWriteMode::kReuseOrFail,
@@ skipping 276 matching lines @@
       file_path, FileWriteMode::kCreateOrFail, FilePermissions::kOwnerOnly));
   ASSERT_NE(kInvalidFileHandle, file_handle.get());
   EXPECT_EQ(0, LoggingFileSizeByHandle(file_handle.get()));
 
   const char data[] = "zippyzap";
   ASSERT_TRUE(LoggingWriteFile(file_handle.get(), &data, sizeof(data)));
 
   EXPECT_EQ(9, LoggingFileSizeByHandle(file_handle.get()));
 }
 
+FileHandle FileHandleForFILE(FILE* file) {
+  int fd = fileno(file);
+#if defined(OS_POSIX)
+  return fd;
+#elif defined(OS_WIN)
+  return reinterpret_cast<HANDLE>(_get_osfhandle(fd));
+#else
+#error Port
+#endif
+}
+
+TEST(FileIO, StdioFileHandle) {
+  EXPECT_EQ(FileHandleForFILE(stdin),
+            StdioFileHandle(StdioStream::kStandardInput));
+  EXPECT_EQ(FileHandleForFILE(stdout),
+            StdioFileHandle(StdioStream::kStandardOutput));
+  EXPECT_EQ(FileHandleForFILE(stderr),
+            StdioFileHandle(StdioStream::kStandardError));
+}
+
 }  // namespace
 }  // namespace test
 }  // namespace crashpad