| /* |
| * Copyright (C) 2017 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 <string.h> |
| |
| #include <string> |
| #include <vector> |
| |
| #include <gtest/gtest.h> |
| |
| #include <unwindstack/Memory.h> |
| |
| #include "utils/MemoryFake.h" |
| |
| namespace unwindstack { |
| |
| TEST(MemoryTest, read32) { |
| MemoryFakeAlwaysReadZero memory; |
| |
| uint32_t data = 0xffffffff; |
| ASSERT_TRUE(memory.Read32(0, &data)); |
| ASSERT_EQ(0U, data); |
| } |
| |
| TEST(MemoryTest, read64) { |
| MemoryFakeAlwaysReadZero memory; |
| |
| uint64_t data = 0xffffffffffffffffULL; |
| ASSERT_TRUE(memory.Read64(0, &data)); |
| ASSERT_EQ(0U, data); |
| } |
| |
| struct FakeStruct { |
| int one; |
| bool two; |
| uint32_t three; |
| uint64_t four; |
| }; |
| |
| TEST(MemoryTest, read_string) { |
| std::string name("string_in_memory"); |
| |
| MemoryFake memory; |
| |
| memory.SetMemory(100, name.c_str(), name.size() + 1); |
| |
| std::string dst_name; |
| ASSERT_TRUE(memory.ReadString(100, &dst_name, 100)); |
| ASSERT_EQ("string_in_memory", dst_name); |
| |
| ASSERT_TRUE(memory.ReadString(107, &dst_name, 100)); |
| ASSERT_EQ("in_memory", dst_name); |
| |
| // Set size greater than string. |
| ASSERT_TRUE(memory.ReadString(107, &dst_name, 10)); |
| ASSERT_EQ("in_memory", dst_name); |
| |
| ASSERT_FALSE(memory.ReadString(107, &dst_name, 9)); |
| } |
| |
| TEST(MemoryTest, read_string_error) { |
| std::string name("short"); |
| |
| MemoryFake memory; |
| |
| // Save everything except the terminating '\0'. |
| memory.SetMemory(0, name.c_str(), name.size()); |
| |
| std::string dst_name; |
| // Read from a non-existant address. |
| ASSERT_FALSE(memory.ReadString(100, &dst_name, 100)); |
| |
| // This should fail because there is no terminating '\0'. |
| ASSERT_FALSE(memory.ReadString(0, &dst_name, 100)); |
| |
| // This should pass because there is a terminating '\0'. |
| memory.SetData8(name.size(), '\0'); |
| ASSERT_TRUE(memory.ReadString(0, &dst_name, 100)); |
| ASSERT_EQ("short", dst_name); |
| } |
| |
| TEST(MemoryTest, read_string_long) { |
| // This string should be greater than 768 characters long (greater than 3 times |
| // the buffer in the ReadString function) to read multiple blocks. |
| static constexpr char kLongString[] = |
| "one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen " |
| "sixteen seventeen eightteen nineteen twenty twenty-one twenty-two twenty-three twenty-four " |
| "twenty-five twenty-six twenty-seven twenty-eight twenty-nine thirty thirty-one thirty-two " |
| "thirty-three thirty-four thirty-five thirty-six thirty-seven thirty-eight thirty-nine forty " |
| "forty-one forty-two forty-three forty-four forty-five forty-size forty-seven forty-eight " |
| "forty-nine fifty fifty-one fifty-two fifty-three fifty-four fifty-five fifty-six " |
| "fifty-seven fifty-eight fifty-nine sixty sixty-one sixty-two sixty-three sixty-four " |
| "sixty-five sixty-six sixty-seven sixty-eight sixty-nine seventy seventy-one seventy-two " |
| "seventy-three seventy-four seventy-five seventy-six seventy-seven seventy-eight " |
| "seventy-nine eighty"; |
| |
| MemoryFake memory; |
| |
| memory.SetMemory(100, kLongString, sizeof(kLongString)); |
| |
| std::string dst_name; |
| ASSERT_TRUE(memory.ReadString(100, &dst_name, sizeof(kLongString))); |
| ASSERT_EQ(kLongString, dst_name); |
| |
| std::string expected_str(kLongString, 255); |
| memory.SetMemory(100, expected_str.data(), expected_str.length() + 1); |
| ASSERT_TRUE(memory.ReadString(100, &dst_name, 256)); |
| ASSERT_EQ(expected_str, dst_name); |
| ASSERT_FALSE(memory.ReadString(100, &dst_name, 255)); |
| |
| expected_str = std::string(kLongString, 256); |
| memory.SetMemory(100, expected_str.data(), expected_str.length() + 1); |
| ASSERT_TRUE(memory.ReadString(100, &dst_name, 257)); |
| ASSERT_EQ(expected_str, dst_name); |
| ASSERT_FALSE(memory.ReadString(100, &dst_name, 256)); |
| |
| expected_str = std::string(kLongString, 299); |
| memory.SetMemory(100, expected_str.data(), expected_str.length() + 1); |
| ASSERT_TRUE(memory.ReadString(100, &dst_name, 300)); |
| ASSERT_EQ(expected_str, dst_name); |
| } |
| |
| } // namespace unwindstack |