KleidiAI Coverage Report

Directory: ./
File: test/tests/buffer_test.cpp
Date: 2025-10-20 13:18:31
Coverage Exec Excl Total
Lines: 85.4% 70 0 82
Functions: 100.0% 14 0 14
Branches: 27.8% 181 0 651
Line Branch Exec Source
1 //
2 // SPDX-FileCopyrightText: Copyright 2025 Arm Limited and/or its affiliates <open-source-office@arm.com>
3 //
4 // SPDX-License-Identifier: Apache-2.0
5 //
6
7 #include "test/common/buffer.hpp"
8
9 #include <gtest/gtest.h>
10 #include <sys/mman.h>
11 #include <sys/signal.h>
12
13 #include <csignal>
14 #include <cstddef>
15 #include <cstdint>
16 #include <cstdlib>
17 #include <limits>
18 #include <random>
19 #include <string>
20
21 namespace kai::test {
22
23 namespace {
24 constexpr size_t g_num_runs = 100;
25 } // namespace
26
27
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 7 TEST(BufferTest, NonePolicy) {
28 1 std::random_device rd;
29
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 1 std::uniform_int_distribution<size_t> dist(1, std::numeric_limits<uint16_t>::max());
31
32 // Store the current buffer policy
33 1 std::string buffer_policy;
34
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 1 if (const char* buffer_policy_env = getenv(Buffer::buffer_policy_env_name)) {
35 ✗ buffer_policy = std::string(buffer_policy_env);
36 ✗ }
37
38 // Overwrite the buffer policy for purpose of the test
39
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 1 ASSERT_EQ(setenv(Buffer::buffer_policy_env_name, "NONE", 1 /* overwrite */), 0);
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 101 for (size_t i = 0; i < g_num_runs; ++i) {
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 100 const size_t buffer_size = dist(rng);
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 100 const auto buffer = Buffer(buffer_size);
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 100 const auto* data = reinterpret_cast<uint8_t*>(buffer.data());
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 100 ASSERT_NE(data, nullptr);
48 100 }
49
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 1 if (buffer_policy.empty()) {
51 // Remove variable if not present before
52
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 1 ASSERT_EQ(unsetenv(Buffer::buffer_policy_env_name), 0);
53 1 } else {
54 // Restore the buffer policy to its original value
55 ✗ ASSERT_EQ(setenv(Buffer::buffer_policy_env_name, buffer_policy.c_str(), 1 /* overwrite */), 0);
56 }
57 1 }
58
59
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 7 TEST(BufferDeathTest, InvalidPolicy) {
60 1 std::random_device rd;
61
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 1 std::uniform_int_distribution<size_t> dist(1, std::numeric_limits<uint16_t>::max());
63
64 // Store the current buffer policy
65 1 std::string buffer_policy;
66
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 1 if (const char* buffer_policy_env = getenv(Buffer::buffer_policy_env_name)) {
67 ✗ buffer_policy = std::string(buffer_policy_env);
68 ✗ }
69
70 // Overwrite the buffer policy for purpose of the test
71
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 1 ASSERT_EQ(setenv(Buffer::buffer_policy_env_name, "INVALID_POLICY_TEST", 1 /* overwrite */), 0);
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 101 for (size_t i = 0; i < g_num_runs; ++i) {
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 100 const size_t buffer_size = dist(rng);
75
76 // Ignore missing default case in switch statement in test dependency macro
77 #pragma GCC diagnostic push
78 #pragma GCC diagnostic ignored "-Wswitch-default"
79
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 100 EXPECT_DEATH({ [[maybe_unused]] const auto buffer = Buffer(buffer_size); }, "");
80 #pragma GCC diagnostic pop
81 100 }
82
83
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 1 if (buffer_policy.empty()) {
84 // Remove variable if not present before
85
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 1 ASSERT_EQ(unsetenv(Buffer::buffer_policy_env_name), 0);
86 1 } else {
87 // Restore the buffer policy to its original value
88 ✗ ASSERT_EQ(setenv(Buffer::buffer_policy_env_name, buffer_policy.c_str(), 1 /* overwrite */), 0);
89 }
90 1 }
91
92 #if defined(__linux__) || defined(__APPLE__)
93
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 7 TEST(BufferDeathTest, ProtectUnderflowPolicy) {
94 1 std::random_device rd;
95
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96
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 1 std::uniform_int_distribution<size_t> dist(1, std::numeric_limits<uint16_t>::max());
97
98 // Store the current buffer policy
99 1 std::string buffer_policy;
100
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 1 if (const char* buffer_policy_env = getenv(Buffer::buffer_policy_env_name)) {
101 ✗ buffer_policy = std::string(buffer_policy_env);
102 ✗ }
103
104 // Overwrite the buffer policy for purpose of the test
105
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 1 ASSERT_EQ(setenv(Buffer::buffer_policy_env_name, "PROTECT_UNDERFLOW", 1 /* overwrite */), 0);
106
107
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 101 for (size_t i = 0; i < g_num_runs; ++i) {
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 100 const size_t buffer_size = dist(rng);
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 100 const auto buffer = Buffer(buffer_size);
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 100 const auto* data = reinterpret_cast<uint8_t*>(buffer.data());
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 100 ASSERT_NE(data, nullptr);
114
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 100 ASSERT_NE(data, MAP_FAILED);
115
116 // Ignore missing default case in switch statement in test dependency macro
117 #pragma GCC diagnostic push
118 #pragma GCC diagnostic ignored "-Wswitch-default"
119
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 200 EXPECT_EXIT(
120 // Underflow by one byte
121 { [[maybe_unused]] const volatile auto val = *--data; },
122 [](const size_t exit_status) {
123 return testing::KilledBySignal(SIGBUS)(exit_status) || //
124 testing::KilledBySignal(SIGSEGV)(exit_status) || //
125 testing::KilledBySignal(SIGABRT)(exit_status); //
126 },
127 "");
128 #pragma GCC diagnostic pop
129 100 }
130
131
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 1 if (buffer_policy.empty()) {
132 // Remove variable if not present before
133
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 1 ASSERT_EQ(unsetenv(Buffer::buffer_policy_env_name), 0);
134 1 } else {
135 // Restore the buffer policy to its original value
136 ✗ ASSERT_EQ(setenv(Buffer::buffer_policy_env_name, buffer_policy.c_str(), 1 /* overwrite */), 0);
137 }
138 1 }
139
140
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 7 TEST(BufferDeathTest, ProtectOverflowPolicy) {
141 1 std::random_device rd;
142
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 1 std::uniform_int_distribution<size_t> dist(1, std::numeric_limits<uint16_t>::max());
144
145 // Store the current buffer policy
146 1 std::string buffer_policy;
147
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 1 if (const char* buffer_policy_env = getenv(Buffer::buffer_policy_env_name)) {
148 ✗ buffer_policy = std::string(buffer_policy_env);
149 ✗ }
150
151 // Overwrite the buffer policy for purpose of the test
152
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 1 ASSERT_EQ(setenv(Buffer::buffer_policy_env_name, "PROTECT_OVERFLOW", 1 /* overwrite */), 0);
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 101 for (size_t i = 0; i < g_num_runs; ++i) {
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 100 const size_t buffer_size = dist(rng);
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 100 const auto buffer = Buffer(buffer_size);
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 100 const auto* data = reinterpret_cast<uint8_t*>(buffer.data());
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 100 ASSERT_NE(data, nullptr);
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 100 ASSERT_NE(data, MAP_FAILED);
162
163 // Ignore missing default case in switch statement in test dependency macro
164 #pragma GCC diagnostic push
165 #pragma GCC diagnostic ignored "-Wswitch-default"
166
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 200 EXPECT_EXIT(
167 // Overflow by one byte
168 { [[maybe_unused]] const volatile auto val = *(data + buffer_size); },
169 [](const size_t exit_status) {
170 return testing::KilledBySignal(SIGBUS)(exit_status) || //
171 testing::KilledBySignal(SIGSEGV)(exit_status) || //
172 testing::KilledBySignal(SIGABRT)(exit_status); //
173 },
174 "");
175 #pragma GCC diagnostic pop
176 100 }
177
178
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 1 if (buffer_policy.empty()) {
179 // Remove variable if not present before
180
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 1 ASSERT_EQ(unsetenv(Buffer::buffer_policy_env_name), 0);
181 1 } else {
182 // Restore the buffer policy to its original value
183 ✗ ASSERT_EQ(setenv(Buffer::buffer_policy_env_name, buffer_policy.c_str(), 1 /* overwrite */), 0);
184 }
185 1 }
186 #endif // if defined(__linux__) || defined(__APPLE__)
187
188 } // namespace kai::test
189