| // Copyright 2012 Google Inc. 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 "syzygy/pdb/pdb_byte_stream.h" |
| #include "gtest/gtest.h" |
| |
| namespace pdb { |
| |
| namespace { |
| |
| class TestPdbByteStream : public PdbByteStream { |
| public: |
| TestPdbByteStream() : PdbByteStream() { |
| } |
| |
| using PdbByteStream::ReadBytes; |
| }; |
| |
| class TestPdbStream : public PdbStream { |
| public: |
| explicit TestPdbStream(size_t length) : PdbStream(length) { |
| } |
| |
| virtual ~TestPdbStream() { |
| } |
| |
| bool ReadBytes(void* dest, size_t count, size_t* bytes_read) { |
| DCHECK(dest != NULL); |
| DCHECK(bytes_read != NULL); |
| |
| if (pos() == length()) { |
| *bytes_read = 0; |
| return true; |
| } |
| |
| count = std::min(count, length() - pos()); |
| ::memset(dest, 0xFF, count); |
| Seek(pos() + count); |
| *bytes_read = count; |
| |
| return true; |
| } |
| }; |
| |
| } // namespace |
| |
| TEST(PdbByteStreamTest, InitFromByteArray) { |
| uint8 data[] = {1, 2, 3, 4, 5, 6, 7, 8}; |
| |
| scoped_refptr<PdbByteStream> stream(new PdbByteStream()); |
| EXPECT_TRUE(stream->Init(data, arraysize(data))); |
| EXPECT_EQ(arraysize(data), stream->length()); |
| EXPECT_TRUE(stream->data() != NULL); |
| |
| for (size_t i = 0; i < stream->length(); ++i) { |
| uint8 num = 0; |
| EXPECT_TRUE(stream->Read(&num, 1)); |
| EXPECT_EQ(data[i], num); |
| } |
| } |
| |
| TEST(PdbByteStreamTest, InitFromPdbStream) { |
| scoped_refptr<TestPdbStream> test_stream(new TestPdbStream(64)); |
| |
| scoped_refptr<PdbByteStream> stream(new PdbByteStream); |
| EXPECT_TRUE(stream->Init(test_stream.get())); |
| EXPECT_EQ(test_stream->length(), stream->length()); |
| EXPECT_TRUE(stream->data() != NULL); |
| |
| for (size_t i = 0; i < stream->length(); ++i) { |
| uint8 num = 0; |
| EXPECT_TRUE(stream->Read(&num, 1)); |
| EXPECT_EQ(0xFF, num); |
| } |
| } |
| |
| TEST(PdbByteStreamTest, ReadBytes) { |
| size_t len = 17; |
| scoped_refptr<TestPdbStream> test_stream(new TestPdbStream(len)); |
| |
| scoped_refptr<TestPdbByteStream> stream(new TestPdbByteStream); |
| EXPECT_TRUE(stream->Init(test_stream.get())); |
| |
| int total_bytes = 0; |
| while (true) { |
| uint8 buffer[4]; |
| size_t bytes_read = 0; |
| EXPECT_TRUE(stream->ReadBytes(buffer, sizeof(buffer), &bytes_read)); |
| if (bytes_read == 0) |
| break; |
| total_bytes += bytes_read; |
| } |
| |
| EXPECT_EQ(len, total_bytes); |
| } |
| |
| TEST(PdbByteStreamTest, GetWritablePdbStream) { |
| scoped_refptr<PdbStream> stream(new PdbByteStream); |
| scoped_refptr<WritablePdbStream> writer1 = stream->GetWritablePdbStream(); |
| EXPECT_TRUE(writer1.get() != NULL); |
| |
| // NOTE: This is a condition that only needs to be true currently because |
| // of limitations in the WritablePdbByteStream implementation. When we |
| // move to a proper interface implementation with shared storage state, |
| // this limitation will be removed. |
| scoped_refptr<WritablePdbStream> writer2 = stream->GetWritablePdbStream(); |
| EXPECT_EQ(writer1.get(), writer2.get()); |
| } |
| |
| TEST(WritablePdbByteStreamTest, WriterChangesReaderLengthButNotCursor) { |
| scoped_refptr<PdbStream> reader(new PdbByteStream); |
| scoped_refptr<WritablePdbStream> writer = reader->GetWritablePdbStream(); |
| ASSERT_TRUE(writer.get() != NULL); |
| |
| EXPECT_EQ(reader->length(), 0u); |
| EXPECT_EQ(reader->pos(), 0u); |
| EXPECT_EQ(writer->length(), 0u); |
| EXPECT_EQ(writer->pos(), 0u); |
| writer->Consume(10); |
| EXPECT_EQ(reader->length(), 10u); |
| EXPECT_EQ(reader->pos(), 0u); |
| EXPECT_EQ(writer->length(), 10u); |
| EXPECT_EQ(writer->pos(), 10u); |
| } |
| |
| } // namespace pdb |