106 lines
3.0 KiB
C++
106 lines
3.0 KiB
C++
/*
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* Copyright (C) 2017 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 <memory>
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#include <vector>
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#include <gtest/gtest.h>
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#include "MemoryFake.h"
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#include "MemoryRange.h"
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namespace unwindstack {
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class MemoryRangeTest : public ::testing::Test {
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protected:
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void SetUp() override {
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process_memory_.reset();
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memory_fake_ = new MemoryFake;
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process_memory_.reset(memory_fake_);
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}
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std::shared_ptr<Memory> process_memory_;
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MemoryFake* memory_fake_ = nullptr;
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};
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TEST_F(MemoryRangeTest, read_fully) {
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memory_fake_->SetMemoryBlock(9000, 2048, 0x4c);
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MemoryRange range(process_memory_, 9001, 1024, 0);
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std::vector<uint8_t> dst(1024);
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ASSERT_TRUE(range.ReadFully(0, dst.data(), dst.size()));
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for (size_t i = 0; i < dst.size(); i++) {
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ASSERT_EQ(0x4cU, dst[i]) << "Failed at byte " << i;
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}
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}
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TEST_F(MemoryRangeTest, read_fully_near_limit) {
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memory_fake_->SetMemoryBlock(0, 8192, 0x4c);
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MemoryRange range(process_memory_, 1000, 1024, 0);
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std::vector<uint8_t> dst(1024);
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ASSERT_TRUE(range.ReadFully(1020, dst.data(), 4));
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for (size_t i = 0; i < 4; i++) {
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ASSERT_EQ(0x4cU, dst[i]) << "Failed at byte " << i;
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}
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// Verify that reads outside of the range will fail.
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ASSERT_FALSE(range.ReadFully(1020, dst.data(), 5));
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ASSERT_FALSE(range.ReadFully(1024, dst.data(), 1));
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ASSERT_FALSE(range.ReadFully(1024, dst.data(), 1024));
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// Verify that reading up to the end works.
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ASSERT_TRUE(range.ReadFully(1020, dst.data(), 4));
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}
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TEST_F(MemoryRangeTest, read_fully_overflow) {
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std::vector<uint8_t> buffer(100);
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std::shared_ptr<Memory> process_memory(new MemoryFakeAlwaysReadZero);
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std::unique_ptr<MemoryRange> overflow(new MemoryRange(process_memory, 100, 200, 0));
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ASSERT_FALSE(overflow->ReadFully(UINT64_MAX - 10, buffer.data(), 100));
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}
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TEST_F(MemoryRangeTest, read) {
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memory_fake_->SetMemoryBlock(0, 4096, 0x4c);
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MemoryRange range(process_memory_, 1000, 1024, 0);
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std::vector<uint8_t> dst(1024);
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ASSERT_EQ(4U, range.Read(1020, dst.data(), dst.size()));
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for (size_t i = 0; i < 4; i++) {
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ASSERT_EQ(0x4cU, dst[i]) << "Failed at byte " << i;
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}
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}
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TEST_F(MemoryRangeTest, read_non_zero_offset) {
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memory_fake_->SetMemoryBlock(1000, 1024, 0x12);
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MemoryRange range(process_memory_, 1000, 1024, 400);
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std::vector<uint8_t> dst(1024);
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ASSERT_EQ(1024U, range.Read(400, dst.data(), dst.size()));
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for (size_t i = 0; i < dst.size(); i++) {
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ASSERT_EQ(0x12U, dst[i]) << "Failed at byte " << i;
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}
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}
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} // namespace unwindstack
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