mirror of
https://github.com/chromium/crashpad.git
synced 2025-03-17 16:43:53 +00:00
70ccb76751
This attempts to be somewhat forward-compatible with upcoming additions to the Data struct, most importantly to not lose the client ID if we ever need to downgrade / read data from a future crashpad version. Bug: 42310127 Change-Id: Ic3914fdd8460f4f41e5bb523d5c52361767880dd Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/5915193 Reviewed-by: Mark Mentovai <mark@chromium.org> Reviewed-by: Jesse McKenna <jessemckenna@google.com> Commit-Queue: Peter Boström <pbos@chromium.org>
207 lines
7.9 KiB
C++
207 lines
7.9 KiB
C++
// Copyright 2017 The Crashpad Authors
|
||
//
|
||
// 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_reader.h"
|
||
|
||
#include <stdint.h>
|
||
|
||
#include <limits>
|
||
#include <type_traits>
|
||
|
||
#include "gmock/gmock.h"
|
||
#include "gtest/gtest.h"
|
||
|
||
namespace crashpad {
|
||
namespace test {
|
||
namespace {
|
||
|
||
using testing::_;
|
||
using testing::InSequence;
|
||
using testing::Return;
|
||
|
||
class MockFileReader : public FileReaderInterface {
|
||
public:
|
||
MockFileReader() : FileReaderInterface() {}
|
||
|
||
MockFileReader(const MockFileReader&) = delete;
|
||
MockFileReader& operator=(const MockFileReader&) = delete;
|
||
|
||
~MockFileReader() override {}
|
||
|
||
// 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) {
|
||
return ReadExactly(reinterpret_cast<void*>(data), size);
|
||
}
|
||
|
||
MOCK_METHOD(FileOperationResult, ReadInt, (uintptr_t, size_t));
|
||
|
||
// FileReaderInterface:
|
||
FileOperationResult Read(void* data, size_t size) override {
|
||
return ReadInt(reinterpret_cast<uintptr_t>(data), size);
|
||
}
|
||
|
||
// FileSeekerInterface:
|
||
MOCK_METHOD(FileOffset, Seek, (FileOffset, int), (override));
|
||
};
|
||
|
||
TEST(FileReader, ReadExactly_Zero) {
|
||
MockFileReader file_reader;
|
||
InSequence in_sequence;
|
||
EXPECT_CALL(file_reader, ReadInt(_, _)).Times(0);
|
||
EXPECT_CALL(file_reader, Seek(_, _)).Times(0);
|
||
EXPECT_TRUE(file_reader.ReadExactlyInt(100, 0));
|
||
}
|
||
|
||
TEST(FileReader, ReadExactly_SingleSmallSuccess) {
|
||
MockFileReader file_reader;
|
||
InSequence in_sequence;
|
||
EXPECT_CALL(file_reader, ReadInt(1000, 1)).WillOnce(Return(1));
|
||
EXPECT_CALL(file_reader, Seek(_, _)).Times(0);
|
||
EXPECT_TRUE(file_reader.ReadExactlyInt(1000, 1));
|
||
}
|
||
|
||
TEST(FileReader, ReadExactly_SingleSmallFailure) {
|
||
MockFileReader file_reader;
|
||
InSequence in_sequence;
|
||
EXPECT_CALL(file_reader, ReadInt(1000, 1)).WillOnce(Return(-1));
|
||
EXPECT_CALL(file_reader, Seek(_, _)).Times(0);
|
||
EXPECT_FALSE(file_reader.ReadExactlyInt(1000, 1));
|
||
}
|
||
|
||
TEST(FileReader, ReadExactly_DoubleSmallSuccess) {
|
||
MockFileReader file_reader;
|
||
InSequence in_sequence;
|
||
EXPECT_CALL(file_reader, ReadInt(0x1000, 2)).WillOnce(Return(1));
|
||
EXPECT_CALL(file_reader, ReadInt(0x1001, 1)).WillOnce(Return(1));
|
||
EXPECT_CALL(file_reader, Seek(_, _)).Times(0);
|
||
EXPECT_TRUE(file_reader.ReadExactlyInt(0x1000, 2));
|
||
}
|
||
|
||
TEST(FileReader, ReadExactly_DoubleSmallShort) {
|
||
MockFileReader file_reader;
|
||
InSequence in_sequence;
|
||
EXPECT_CALL(file_reader, ReadInt(0x20000, 2)).WillOnce(Return(1));
|
||
EXPECT_CALL(file_reader, ReadInt(0x20001, 1)).WillOnce(Return(0));
|
||
EXPECT_CALL(file_reader, Seek(_, _)).Times(0);
|
||
EXPECT_FALSE(file_reader.ReadExactlyInt(0x20000, 2));
|
||
}
|
||
|
||
TEST(FileReader, ReadExactly_Medium) {
|
||
MockFileReader file_reader;
|
||
InSequence in_sequence;
|
||
EXPECT_CALL(file_reader, ReadInt(0x80000000, 0x20000000))
|
||
.WillOnce(Return(0x10000000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x90000000, 0x10000000))
|
||
.WillOnce(Return(0x8000000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x98000000, 0x8000000))
|
||
.WillOnce(Return(0x4000000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9c000000, 0x4000000))
|
||
.WillOnce(Return(0x2000000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9e000000, 0x2000000))
|
||
.WillOnce(Return(0x1000000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9f000000, 0x1000000))
|
||
.WillOnce(Return(0x800000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9f800000, 0x800000))
|
||
.WillOnce(Return(0x400000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9fc00000, 0x400000))
|
||
.WillOnce(Return(0x200000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9fe00000, 0x200000))
|
||
.WillOnce(Return(0x100000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9ff00000, 0x100000))
|
||
.WillOnce(Return(0x80000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9ff80000, 0x80000))
|
||
.WillOnce(Return(0x40000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9ffc0000, 0x40000))
|
||
.WillOnce(Return(0x20000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9ffe0000, 0x20000))
|
||
.WillOnce(Return(0x10000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9fff0000, 0x10000))
|
||
.WillOnce(Return(0x8000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9fff8000, 0x8000))
|
||
.WillOnce(Return(0x4000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9fffc000, 0x4000))
|
||
.WillOnce(Return(0x2000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9fffe000, 0x2000))
|
||
.WillOnce(Return(0x1000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9ffff000, 0x1000)).WillOnce(Return(0x800));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9ffff800, 0x800)).WillOnce(Return(0x400));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9ffffc00, 0x400)).WillOnce(Return(0x200));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9ffffe00, 0x200)).WillOnce(Return(0x100));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9fffff00, 0x100)).WillOnce(Return(0x80));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9fffff80, 0x80)).WillOnce(Return(0x40));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9fffffc0, 0x40)).WillOnce(Return(0x20));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9fffffe0, 0x20)).WillOnce(Return(0x10));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9ffffff0, 0x10)).WillOnce(Return(0x8));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9ffffff8, 0x8)).WillOnce(Return(0x4));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9ffffffc, 0x4)).WillOnce(Return(0x2));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9ffffffe, 0x2)).WillOnce(Return(0x1));
|
||
EXPECT_CALL(file_reader, ReadInt(0x9fffffff, 0x1)).WillOnce(Return(0x1));
|
||
EXPECT_CALL(file_reader, Seek(_, _)).Times(0);
|
||
EXPECT_TRUE(file_reader.ReadExactlyInt(0x80000000, 0x20000000));
|
||
}
|
||
|
||
TEST(FileReader, ReadExactly_LargeSuccess) {
|
||
MockFileReader file_reader;
|
||
InSequence in_sequence;
|
||
constexpr size_t max = std::numeric_limits<int32_t>::max();
|
||
constexpr size_t increment = max / 2;
|
||
EXPECT_CALL(file_reader, ReadInt(0, max)).WillOnce(Return(increment));
|
||
EXPECT_CALL(file_reader, ReadInt(increment, max - increment))
|
||
.WillOnce(Return(increment));
|
||
EXPECT_CALL(file_reader, ReadInt(2 * increment, 1)).WillOnce(Return(1));
|
||
EXPECT_CALL(file_reader, Seek(_, _)).Times(0);
|
||
EXPECT_TRUE(file_reader.ReadExactlyInt(0, max));
|
||
}
|
||
|
||
TEST(FileReader, ReadExactly_LargeShort) {
|
||
MockFileReader file_reader;
|
||
InSequence in_sequence;
|
||
EXPECT_CALL(file_reader, ReadInt(0, 0x7fffffff)).WillOnce(Return(0x3fffffff));
|
||
EXPECT_CALL(file_reader, ReadInt(0x3fffffff, 0x40000000))
|
||
.WillOnce(Return(0x10000000));
|
||
EXPECT_CALL(file_reader, ReadInt(0x4fffffff, 0x30000000)).WillOnce(Return(0));
|
||
EXPECT_CALL(file_reader, Seek(_, _)).Times(0);
|
||
EXPECT_FALSE(file_reader.ReadExactlyInt(0, 0x7fffffff));
|
||
}
|
||
|
||
TEST(FileReader, ReadExactly_LargeFailure) {
|
||
MockFileReader file_reader;
|
||
InSequence in_sequence;
|
||
EXPECT_CALL(file_reader, ReadInt(0, 0x7fffffff)).WillOnce(Return(0x3fffffff));
|
||
EXPECT_CALL(file_reader, ReadInt(0x3fffffff, 0x40000000))
|
||
.WillOnce(Return(-1));
|
||
EXPECT_CALL(file_reader, Seek(_, _)).Times(0);
|
||
EXPECT_FALSE(file_reader.ReadExactlyInt(0, 0x7fffffff));
|
||
}
|
||
|
||
TEST(FileReader, ReadExactly_TripleMax) {
|
||
MockFileReader file_reader;
|
||
InSequence in_sequence;
|
||
// ReadExactly supports at most int32_t bytes.
|
||
constexpr size_t max = std::numeric_limits<int32_t>::max();
|
||
constexpr size_t increment = max / 2;
|
||
EXPECT_CALL(file_reader, ReadInt(0, max)).WillOnce(Return(increment));
|
||
EXPECT_CALL(file_reader, ReadInt(increment, max - increment))
|
||
.WillOnce(Return(increment));
|
||
EXPECT_CALL(file_reader, ReadInt(2 * increment, 1)).WillOnce(Return(1));
|
||
EXPECT_CALL(file_reader, Seek(_, _)).Times(0);
|
||
EXPECT_TRUE(file_reader.ReadExactlyInt(0, max));
|
||
}
|
||
|
||
} // namespace
|
||
} // namespace test
|
||
} // namespace crashpad
|