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/*
* Copyright (C) 2016 The Android Open Source Project
*
* 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 <stdint.h>
#include <vector>
#include <gtest/gtest.h>
#include "LogFake.h"
#include "MemoryBuffer.h"
namespace unwindstack {
class MemoryBufferTest : public ::testing::Test {
protected:
void SetUp() override {
ResetLogs();
memory_.reset(new MemoryBuffer);
}
std::unique_ptr<MemoryBuffer> memory_;
};
TEST_F(MemoryBufferTest, empty) {
ASSERT_EQ(0U, memory_->Size());
std::vector<uint8_t> buffer(1024);
ASSERT_FALSE(memory_->ReadFully(0, buffer.data(), 1));
ASSERT_EQ(nullptr, memory_->GetPtr(0));
ASSERT_EQ(nullptr, memory_->GetPtr(1));
}
TEST_F(MemoryBufferTest, write_read) {
ASSERT_TRUE(memory_->Resize(256));
ASSERT_EQ(256U, memory_->Size());
ASSERT_TRUE(memory_->GetPtr(0) != nullptr);
ASSERT_TRUE(memory_->GetPtr(1) != nullptr);
ASSERT_TRUE(memory_->GetPtr(255) != nullptr);
ASSERT_TRUE(memory_->GetPtr(256) == nullptr);
uint8_t* data = memory_->GetPtr(0);
for (size_t i = 0; i < memory_->Size(); i++) {
data[i] = i;
}
std::vector<uint8_t> buffer(memory_->Size());
ASSERT_TRUE(memory_->ReadFully(0, buffer.data(), buffer.size()));
for (size_t i = 0; i < buffer.size(); i++) {
ASSERT_EQ(i, buffer[i]) << "Failed at byte " << i;
}
}
TEST_F(MemoryBufferTest, read_failures) {
ASSERT_TRUE(memory_->Resize(100));
std::vector<uint8_t> buffer(200);
ASSERT_FALSE(memory_->ReadFully(0, buffer.data(), 101));
ASSERT_FALSE(memory_->ReadFully(100, buffer.data(), 1));
ASSERT_FALSE(memory_->ReadFully(101, buffer.data(), 2));
ASSERT_FALSE(memory_->ReadFully(99, buffer.data(), 2));
ASSERT_TRUE(memory_->ReadFully(99, buffer.data(), 1));
}
TEST_F(MemoryBufferTest, read_failure_overflow) {
ASSERT_TRUE(memory_->Resize(100));
std::vector<uint8_t> buffer(200);
ASSERT_FALSE(memory_->ReadFully(UINT64_MAX - 100, buffer.data(), 200));
}
TEST_F(MemoryBufferTest, Read) {
ASSERT_TRUE(memory_->Resize(256));
ASSERT_EQ(256U, memory_->Size());
ASSERT_TRUE(memory_->GetPtr(0) != nullptr);
ASSERT_TRUE(memory_->GetPtr(1) != nullptr);
ASSERT_TRUE(memory_->GetPtr(255) != nullptr);
ASSERT_TRUE(memory_->GetPtr(256) == nullptr);
uint8_t* data = memory_->GetPtr(0);
for (size_t i = 0; i < memory_->Size(); i++) {
data[i] = i;
}
std::vector<uint8_t> buffer(memory_->Size());
ASSERT_EQ(128U, memory_->Read(128, buffer.data(), buffer.size()));
for (size_t i = 0; i < 128; i++) {
ASSERT_EQ(128 + i, buffer[i]) << "Failed at byte " << i;
}
}
TEST_F(MemoryBufferTest, Resize) {
ASSERT_TRUE(memory_->Resize(256));
ASSERT_TRUE(memory_->Resize(1024));
}
extern "C" void __hwasan_init() __attribute__((weak));
TEST_F(MemoryBufferTest, Resize_too_large) {
if (&__hwasan_init != 0) {
GTEST_SKIP() << "Tests fails hwasan allocation size too large check.";
}
ASSERT_FALSE(memory_->Resize(SIZE_MAX));
}
} // namespace unwindstack
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