Christopher Ferris | f447c8e | 2017-04-03 12:39:47 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <stdint.h> |
| 18 | #include <string.h> |
| 19 | |
| 20 | #include <string> |
| 21 | #include <vector> |
| 22 | |
| 23 | #include <gtest/gtest.h> |
| 24 | |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 25 | #include <unwindstack/Memory.h> |
Christopher Ferris | f447c8e | 2017-04-03 12:39:47 -0700 | [diff] [blame] | 26 | |
| 27 | #include "MemoryFake.h" |
| 28 | |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 29 | namespace unwindstack { |
| 30 | |
Christopher Ferris | f447c8e | 2017-04-03 12:39:47 -0700 | [diff] [blame] | 31 | TEST(MemoryTest, read32) { |
| 32 | MemoryFakeAlwaysReadZero memory; |
| 33 | |
| 34 | uint32_t data = 0xffffffff; |
| 35 | ASSERT_TRUE(memory.Read32(0, &data)); |
| 36 | ASSERT_EQ(0U, data); |
| 37 | } |
| 38 | |
| 39 | TEST(MemoryTest, read64) { |
| 40 | MemoryFakeAlwaysReadZero memory; |
| 41 | |
| 42 | uint64_t data = 0xffffffffffffffffULL; |
| 43 | ASSERT_TRUE(memory.Read64(0, &data)); |
| 44 | ASSERT_EQ(0U, data); |
| 45 | } |
| 46 | |
| 47 | struct FakeStruct { |
| 48 | int one; |
| 49 | bool two; |
| 50 | uint32_t three; |
| 51 | uint64_t four; |
| 52 | }; |
| 53 | |
| 54 | TEST(MemoryTest, read_field) { |
| 55 | MemoryFakeAlwaysReadZero memory; |
| 56 | |
| 57 | FakeStruct data; |
| 58 | memset(&data, 0xff, sizeof(data)); |
| 59 | ASSERT_TRUE(memory.ReadField(0, &data, &data.one, sizeof(data.one))); |
| 60 | ASSERT_EQ(0, data.one); |
| 61 | |
| 62 | memset(&data, 0xff, sizeof(data)); |
| 63 | ASSERT_TRUE(memory.ReadField(0, &data, &data.two, sizeof(data.two))); |
| 64 | ASSERT_FALSE(data.two); |
| 65 | |
| 66 | memset(&data, 0xff, sizeof(data)); |
| 67 | ASSERT_TRUE(memory.ReadField(0, &data, &data.three, sizeof(data.three))); |
| 68 | ASSERT_EQ(0U, data.three); |
| 69 | |
| 70 | memset(&data, 0xff, sizeof(data)); |
| 71 | ASSERT_TRUE(memory.ReadField(0, &data, &data.four, sizeof(data.four))); |
| 72 | ASSERT_EQ(0U, data.four); |
| 73 | } |
| 74 | |
| 75 | TEST(MemoryTest, read_field_fails) { |
| 76 | MemoryFakeAlwaysReadZero memory; |
| 77 | |
| 78 | FakeStruct data; |
| 79 | memset(&data, 0xff, sizeof(data)); |
| 80 | |
| 81 | ASSERT_FALSE(memory.ReadField(UINT64_MAX, &data, &data.three, sizeof(data.three))); |
| 82 | |
| 83 | // Field and start reversed, should fail. |
| 84 | ASSERT_FALSE(memory.ReadField(100, &data.two, &data, sizeof(data.two))); |
| 85 | ASSERT_FALSE(memory.ReadField(0, &data.two, &data, sizeof(data.two))); |
| 86 | } |
| 87 | |
| 88 | TEST(MemoryTest, read_string) { |
| 89 | std::string name("string_in_memory"); |
| 90 | |
| 91 | MemoryFake memory; |
| 92 | |
| 93 | memory.SetMemory(100, name.c_str(), name.size() + 1); |
| 94 | |
| 95 | std::string dst_name; |
| 96 | ASSERT_TRUE(memory.ReadString(100, &dst_name)); |
| 97 | ASSERT_EQ("string_in_memory", dst_name); |
| 98 | |
| 99 | ASSERT_TRUE(memory.ReadString(107, &dst_name)); |
| 100 | ASSERT_EQ("in_memory", dst_name); |
| 101 | |
| 102 | // Set size greater than string. |
| 103 | ASSERT_TRUE(memory.ReadString(107, &dst_name, 10)); |
| 104 | ASSERT_EQ("in_memory", dst_name); |
| 105 | |
| 106 | ASSERT_FALSE(memory.ReadString(107, &dst_name, 9)); |
| 107 | } |
| 108 | |
| 109 | TEST(MemoryTest, read_string_error) { |
| 110 | std::string name("short"); |
| 111 | |
| 112 | MemoryFake memory; |
| 113 | |
| 114 | // Save everything except the terminating '\0'. |
| 115 | memory.SetMemory(0, name.c_str(), name.size()); |
| 116 | |
| 117 | std::string dst_name; |
| 118 | // Read from a non-existant address. |
| 119 | ASSERT_FALSE(memory.ReadString(100, &dst_name)); |
| 120 | |
| 121 | // This should fail because there is no terminating '\0'. |
| 122 | ASSERT_FALSE(memory.ReadString(0, &dst_name)); |
| 123 | |
| 124 | // This should pass because there is a terminating '\0'. |
| 125 | memory.SetData8(name.size(), '\0'); |
| 126 | ASSERT_TRUE(memory.ReadString(0, &dst_name)); |
| 127 | ASSERT_EQ("short", dst_name); |
| 128 | } |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 129 | |
| 130 | } // namespace unwindstack |