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111 lines
3.2 KiB
111 lines
3.2 KiB
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdint.h>
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#include <vector>
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#include <gtest/gtest.h>
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#include "LogFake.h"
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#include "MemoryBuffer.h"
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namespace unwindstack {
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class MemoryBufferTest : public ::testing::Test {
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protected:
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void SetUp() override {
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ResetLogs();
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memory_.reset(new MemoryBuffer);
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}
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std::unique_ptr<MemoryBuffer> memory_;
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};
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TEST_F(MemoryBufferTest, empty) {
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ASSERT_EQ(0U, memory_->Size());
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std::vector<uint8_t> buffer(1024);
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ASSERT_FALSE(memory_->ReadFully(0, buffer.data(), 1));
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ASSERT_EQ(nullptr, memory_->GetPtr(0));
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ASSERT_EQ(nullptr, memory_->GetPtr(1));
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}
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TEST_F(MemoryBufferTest, write_read) {
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ASSERT_TRUE(memory_->Resize(256));
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ASSERT_EQ(256U, memory_->Size());
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ASSERT_TRUE(memory_->GetPtr(0) != nullptr);
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ASSERT_TRUE(memory_->GetPtr(1) != nullptr);
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ASSERT_TRUE(memory_->GetPtr(255) != nullptr);
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ASSERT_TRUE(memory_->GetPtr(256) == nullptr);
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uint8_t* data = memory_->GetPtr(0);
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for (size_t i = 0; i < memory_->Size(); i++) {
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data[i] = i;
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}
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std::vector<uint8_t> buffer(memory_->Size());
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ASSERT_TRUE(memory_->ReadFully(0, buffer.data(), buffer.size()));
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for (size_t i = 0; i < buffer.size(); i++) {
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ASSERT_EQ(i, buffer[i]) << "Failed at byte " << i;
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}
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}
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TEST_F(MemoryBufferTest, read_failures) {
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ASSERT_TRUE(memory_->Resize(100));
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std::vector<uint8_t> buffer(200);
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ASSERT_FALSE(memory_->ReadFully(0, buffer.data(), 101));
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ASSERT_FALSE(memory_->ReadFully(100, buffer.data(), 1));
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ASSERT_FALSE(memory_->ReadFully(101, buffer.data(), 2));
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ASSERT_FALSE(memory_->ReadFully(99, buffer.data(), 2));
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ASSERT_TRUE(memory_->ReadFully(99, buffer.data(), 1));
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}
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TEST_F(MemoryBufferTest, read_failure_overflow) {
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ASSERT_TRUE(memory_->Resize(100));
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std::vector<uint8_t> buffer(200);
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ASSERT_FALSE(memory_->ReadFully(UINT64_MAX - 100, buffer.data(), 200));
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}
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TEST_F(MemoryBufferTest, Read) {
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ASSERT_TRUE(memory_->Resize(256));
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ASSERT_EQ(256U, memory_->Size());
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ASSERT_TRUE(memory_->GetPtr(0) != nullptr);
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ASSERT_TRUE(memory_->GetPtr(1) != nullptr);
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ASSERT_TRUE(memory_->GetPtr(255) != nullptr);
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ASSERT_TRUE(memory_->GetPtr(256) == nullptr);
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uint8_t* data = memory_->GetPtr(0);
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for (size_t i = 0; i < memory_->Size(); i++) {
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data[i] = i;
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}
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std::vector<uint8_t> buffer(memory_->Size());
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ASSERT_EQ(128U, memory_->Read(128, buffer.data(), buffer.size()));
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for (size_t i = 0; i < 128; i++) {
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ASSERT_EQ(128 + i, buffer[i]) << "Failed at byte " << i;
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}
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}
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TEST_F(MemoryBufferTest, Resize) {
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ASSERT_TRUE(memory_->Resize(256));
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ASSERT_TRUE(memory_->Resize(1024));
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ASSERT_FALSE(memory_->Resize(SIZE_MAX));
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}
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} // namespace unwindstack
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