| /* |
| * 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 <android-base/test_utils.h> |
| #include <android-base/file.h> |
| #include <gtest/gtest.h> |
| |
| #include "Memory.h" |
| |
| #include "LogFake.h" |
| |
| class MemoryFileTest : public ::testing::Test { |
| protected: |
| void SetUp() override { |
| ResetLogs(); |
| tf_ = new TemporaryFile; |
| } |
| |
| void TearDown() override { |
| delete tf_; |
| } |
| |
| void WriteTestData() { |
| ASSERT_TRUE(android::base::WriteStringToFd("0123456789abcdefghijklmnopqrstuvxyz", tf_->fd)); |
| } |
| |
| MemoryFileAtOffset memory_; |
| |
| TemporaryFile* tf_ = nullptr; |
| }; |
| |
| TEST_F(MemoryFileTest, offset_0) { |
| WriteTestData(); |
| |
| ASSERT_TRUE(memory_.Init(tf_->path, 0)); |
| std::vector<char> buffer(11); |
| ASSERT_TRUE(memory_.Read(0, buffer.data(), 10)); |
| buffer[10] = '\0'; |
| ASSERT_STREQ("0123456789", buffer.data()); |
| } |
| |
| TEST_F(MemoryFileTest, offset_non_zero) { |
| WriteTestData(); |
| |
| ASSERT_TRUE(memory_.Init(tf_->path, 10)); |
| std::vector<char> buffer(11); |
| ASSERT_TRUE(memory_.Read(0, buffer.data(), 10)); |
| buffer[10] = '\0'; |
| ASSERT_STREQ("abcdefghij", buffer.data()); |
| } |
| |
| TEST_F(MemoryFileTest, offset_non_zero_larger_than_pagesize) { |
| size_t pagesize = getpagesize(); |
| std::string large_string; |
| for (size_t i = 0; i < pagesize; i++) { |
| large_string += '1'; |
| } |
| large_string += "012345678901234abcdefgh"; |
| ASSERT_TRUE(android::base::WriteStringToFd(large_string, tf_->fd)); |
| |
| ASSERT_TRUE(memory_.Init(tf_->path, pagesize + 15)); |
| std::vector<char> buffer(9); |
| ASSERT_TRUE(memory_.Read(0, buffer.data(), 8)); |
| buffer[8] = '\0'; |
| ASSERT_STREQ("abcdefgh", buffer.data()); |
| } |
| |
| TEST_F(MemoryFileTest, offset_pagesize_aligned) { |
| size_t pagesize = getpagesize(); |
| std::string data; |
| for (size_t i = 0; i < 2 * pagesize; i++) { |
| data += static_cast<char>((i / pagesize) + '0'); |
| data += static_cast<char>((i % 10) + '0'); |
| } |
| ASSERT_TRUE(android::base::WriteStringToFd(data, tf_->fd)); |
| ASSERT_TRUE(memory_.Init(tf_->path, 2 * pagesize)); |
| std::vector<char> buffer(11); |
| ASSERT_TRUE(memory_.Read(0, buffer.data(), 10)); |
| buffer[10] = '\0'; |
| std::string expected_str; |
| for (size_t i = 0; i < 5; i++) { |
| expected_str += '1'; |
| expected_str += static_cast<char>(((i + pagesize) % 10) + '0'); |
| } |
| ASSERT_STREQ(expected_str.c_str(), buffer.data()); |
| } |
| |
| TEST_F(MemoryFileTest, offset_pagesize_aligned_plus_extra) { |
| size_t pagesize = getpagesize(); |
| std::string data; |
| for (size_t i = 0; i < 2 * pagesize; i++) { |
| data += static_cast<char>((i / pagesize) + '0'); |
| data += static_cast<char>((i % 10) + '0'); |
| } |
| ASSERT_TRUE(android::base::WriteStringToFd(data, tf_->fd)); |
| ASSERT_TRUE(memory_.Init(tf_->path, 2 * pagesize + 10)); |
| std::vector<char> buffer(11); |
| ASSERT_TRUE(memory_.Read(0, buffer.data(), 10)); |
| buffer[10] = '\0'; |
| std::string expected_str; |
| for (size_t i = 0; i < 5; i++) { |
| expected_str += '1'; |
| expected_str += static_cast<char>(((i + pagesize + 5) % 10) + '0'); |
| } |
| ASSERT_STREQ(expected_str.c_str(), buffer.data()); |
| } |
| |
| TEST_F(MemoryFileTest, read_error) { |
| std::string data; |
| for (size_t i = 0; i < 5000; i++) { |
| data += static_cast<char>((i % 10) + '0'); |
| } |
| ASSERT_TRUE(android::base::WriteStringToFd(data, tf_->fd)); |
| |
| std::vector<char> buffer(100); |
| |
| // Read before init. |
| ASSERT_FALSE(memory_.Read(0, buffer.data(), 10)); |
| |
| ASSERT_TRUE(memory_.Init(tf_->path, 0)); |
| |
| ASSERT_FALSE(memory_.Read(10000, buffer.data(), 10)); |
| ASSERT_FALSE(memory_.Read(5000, buffer.data(), 10)); |
| ASSERT_FALSE(memory_.Read(4990, buffer.data(), 11)); |
| ASSERT_TRUE(memory_.Read(4990, buffer.data(), 10)); |
| ASSERT_FALSE(memory_.Read(4999, buffer.data(), 2)); |
| ASSERT_TRUE(memory_.Read(4999, buffer.data(), 1)); |
| } |
| |
| TEST_F(MemoryFileTest, read_string) { |
| std::string value("name_in_file"); |
| ASSERT_TRUE(android::base::WriteFully(tf_->fd, value.c_str(), value.size() + 1)); |
| |
| std::string name; |
| ASSERT_TRUE(memory_.Init(tf_->path, 0)); |
| ASSERT_TRUE(memory_.ReadString(0, &name)); |
| ASSERT_EQ("name_in_file", name); |
| ASSERT_TRUE(memory_.ReadString(5, &name)); |
| ASSERT_EQ("in_file", name); |
| } |
| |
| TEST_F(MemoryFileTest, read_string_error) { |
| std::vector<uint8_t> buffer = { 0x23, 0x32, 0x45 }; |
| ASSERT_TRUE(android::base::WriteFully(tf_->fd, buffer.data(), buffer.size())); |
| |
| std::string name; |
| ASSERT_TRUE(memory_.Init(tf_->path, 0)); |
| |
| // Read from a non-existant address. |
| ASSERT_FALSE(memory_.ReadString(100, &name)); |
| |
| // This should fail because there is no terminating \0 |
| ASSERT_FALSE(memory_.ReadString(0, &name)); |
| } |