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97 lines
3.2 KiB
97 lines
3.2 KiB
4 months ago
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/*
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* Copyright (C) 2018 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 <vector>
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#include <gtest/gtest.h>
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#include "LogFake.h"
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#include "MemoryOfflineBuffer.h"
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namespace unwindstack {
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class MemoryOfflineBufferTest : 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 MemoryOfflineBuffer(buffer_.data(), kStart, kEnd));
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}
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static void SetUpTestSuite() {
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buffer_.resize(kLength);
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for (size_t i = 0; i < kLength; i++) {
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buffer_[i] = i % 189;
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}
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}
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std::unique_ptr<MemoryOfflineBuffer> memory_;
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static constexpr size_t kLength = 0x2000;
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static constexpr uint64_t kStart = 0x1000;
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static constexpr uint64_t kEnd = kStart + kLength;
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static std::vector<uint8_t> buffer_;
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};
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std::vector<uint8_t> MemoryOfflineBufferTest::buffer_;
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static void VerifyBuffer(uint8_t* buffer, size_t start_value, size_t length) {
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for (size_t i = 0; i < length; i++) {
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ASSERT_EQ((start_value + i) % 189, buffer[i]) << "Failed at byte " << i;
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}
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}
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TEST_F(MemoryOfflineBufferTest, read_out_of_bounds) {
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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_FALSE(memory_->ReadFully(0xfff, buffer.data(), 1));
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ASSERT_FALSE(memory_->ReadFully(0xfff, buffer.data(), 2));
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ASSERT_FALSE(memory_->ReadFully(0x3000, buffer.data(), 1));
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ASSERT_FALSE(memory_->ReadFully(0x3001, buffer.data(), 1));
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}
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TEST_F(MemoryOfflineBufferTest, read) {
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std::vector<uint8_t> buffer(1024);
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ASSERT_TRUE(memory_->ReadFully(kStart, buffer.data(), 10));
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ASSERT_NO_FATAL_FAILURE(VerifyBuffer(buffer.data(), 0, 10));
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ASSERT_TRUE(memory_->ReadFully(kStart + 555, buffer.data(), 40));
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ASSERT_NO_FATAL_FAILURE(VerifyBuffer(buffer.data(), 555, 40));
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ASSERT_TRUE(memory_->ReadFully(kStart + kLength - 105, buffer.data(), 105));
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ASSERT_NO_FATAL_FAILURE(VerifyBuffer(buffer.data(), kLength - 105, 105));
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}
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TEST_F(MemoryOfflineBufferTest, read_past_end) {
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std::vector<uint8_t> buffer(1024);
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ASSERT_EQ(100U, memory_->Read(kStart + kLength - 100, buffer.data(), buffer.size()));
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VerifyBuffer(buffer.data(), kLength - 100, 100);
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}
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TEST_F(MemoryOfflineBufferTest, read_after_reset) {
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std::vector<uint8_t> buffer(1024);
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ASSERT_TRUE(memory_->ReadFully(kStart, buffer.data(), 100));
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ASSERT_NO_FATAL_FAILURE(VerifyBuffer(buffer.data(), 0, 100));
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memory_->Reset(&buffer_[10], 0x12000, 0x13000);
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ASSERT_TRUE(memory_->ReadFully(0x12000, buffer.data(), 100));
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ASSERT_NO_FATAL_FAILURE(VerifyBuffer(buffer.data(), 10, 100));
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ASSERT_EQ(50U, memory_->Read(0x13000 - 50, buffer.data(), buffer.size()));
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ASSERT_NO_FATAL_FAILURE(VerifyBuffer(buffer.data(), 0x1000 - 50 + 10, 50));
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}
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} // namespace unwindstack
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