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// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/fxcrt/cfx_seekablemultistream.h"
#include <memory>
#include <vector>
#include "core/fpdfapi/parser/cpdf_dictionary.h"
#include "core/fpdfapi/parser/cpdf_stream.h"
#include "core/fxcrt/fx_memory.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/test_support.h"
#include "third_party/base/ptr_util.h"
TEST(CFX_SeekableMultiStreamTest, NoStreams) {
std::vector<const CPDF_Stream*> streams;
auto fileread = pdfium::MakeRetain<CFX_SeekableMultiStream>(streams);
uint8_t output_buffer[16];
memset(output_buffer, 0xbd, sizeof(output_buffer));
EXPECT_FALSE(fileread->ReadBlock(output_buffer, 0, 0));
EXPECT_EQ(0xbd, output_buffer[0]);
}
TEST(CXFAFileReadTest, EmptyStreams) {
std::vector<const CPDF_Stream*> streams;
auto stream1 = pdfium::MakeUnique<CPDF_Stream>();
streams.push_back(stream1.get());
auto fileread = pdfium::MakeRetain<CFX_SeekableMultiStream>(streams);
uint8_t output_buffer[16];
memset(output_buffer, 0xbd, sizeof(output_buffer));
EXPECT_FALSE(fileread->ReadBlock(output_buffer, 0, 0));
EXPECT_EQ(0xbd, output_buffer[0]);
}
TEST(CXFAFileReadTest, NormalStreams) {
std::vector<const CPDF_Stream*> streams;
auto stream1 = pdfium::MakeUnique<CPDF_Stream>();
auto stream2 = pdfium::MakeUnique<CPDF_Stream>();
auto stream3 = pdfium::MakeUnique<CPDF_Stream>();
// 16 chars total.
stream1->InitStream(reinterpret_cast<const uint8_t*>("one t"), 5,
pdfium::MakeUnique<CPDF_Dictionary>());
stream2->InitStream(reinterpret_cast<const uint8_t*>("wo "), 3,
pdfium::MakeUnique<CPDF_Dictionary>());
stream3->InitStream(reinterpret_cast<const uint8_t*>("three!!!"), 8,
pdfium::MakeUnique<CPDF_Dictionary>());
streams.push_back(stream1.get());
streams.push_back(stream2.get());
streams.push_back(stream3.get());
auto fileread = pdfium::MakeRetain<CFX_SeekableMultiStream>(streams);
uint8_t output_buffer[16];
memset(output_buffer, 0xbd, sizeof(output_buffer));
EXPECT_TRUE(fileread->ReadBlock(output_buffer, 0, 0));
EXPECT_EQ(0xbd, output_buffer[0]);
memset(output_buffer, 0xbd, sizeof(output_buffer));
EXPECT_TRUE(fileread->ReadBlock(output_buffer, 1, 0));
EXPECT_EQ(0xbd, output_buffer[0]);
memset(output_buffer, 0xbd, sizeof(output_buffer));
EXPECT_TRUE(fileread->ReadBlock(output_buffer, 0, 1));
EXPECT_EQ(0, memcmp(output_buffer, "o", 1));
EXPECT_EQ(0xbd, output_buffer[1]);
memset(output_buffer, 0xbd, sizeof(output_buffer));
EXPECT_TRUE(fileread->ReadBlock(output_buffer, 0, sizeof(output_buffer)));
EXPECT_EQ(0, memcmp(output_buffer, "one two three!!!", 16));
memset(output_buffer, 0xbd, sizeof(output_buffer));
EXPECT_TRUE(fileread->ReadBlock(output_buffer, 2, 10));
EXPECT_EQ(0, memcmp(output_buffer, "e two thre", 10));
EXPECT_EQ(0xbd, output_buffer[11]);
memset(output_buffer, 0xbd, sizeof(output_buffer));
EXPECT_FALSE(fileread->ReadBlock(output_buffer, 1, sizeof(output_buffer)));
EXPECT_EQ(0, memcmp(output_buffer, "ne two three!!!", 15));
EXPECT_EQ(0xbd, output_buffer[15]);
}
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