src/lib/support/tests/TestSafeInt.cpp

   1 /*
   2  *
   3  *    Copyright (c) 2020 Project CHIP Authors
   4  *    All rights reserved.
   5  *
   6  *    Licensed under the Apache License, Version 2.0 (the "License");
   7  *    you may not use this file except in compliance with the License.
   8  *    You may obtain a copy of the License at
   9  *
  10  *        http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  *    Unless required by applicable law or agreed to in writing, software
  13  *    distributed under the License is distributed on an "AS IS" BASIS,
  14  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  *    See the License for the specific language governing permissions and
  16  *    limitations under the License.
  17  */
  18
  19 /**
  20  *    @file
  21  *      This file implements a unit test suite for CHIP SafeInt functions
  22  *
  23  */
  24
  25 #include <support/SafeInt.h>
  26 #include <support/UnitTestRegistration.h>
  27
  28 #include <nlunit-test.h>
  29
  30 using namespace chip;
  31
  32 static void TestCanCastTo_Int8(nlTestSuite * inSuite, void * inContext)
  33 {
  34     NL_TEST_ASSERT(inSuite, CanCastTo<uint8_t>(0));
  35     NL_TEST_ASSERT(inSuite, CanCastTo<uint8_t>(127));
  36     NL_TEST_ASSERT(inSuite, CanCastTo<uint8_t>(128));
  37     NL_TEST_ASSERT(inSuite, CanCastTo<uint8_t>(129));
  38     NL_TEST_ASSERT(inSuite, CanCastTo<uint8_t>(255));
  39     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(256));
  40     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(32767));
  41     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(32768));
  42     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(32769));
  43     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(65535));
  44     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(65536));
  45     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(2147483647ll));
  46     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(2147483648ll));
  47     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(2147483649ll));
  48     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(4294967295ll));
  49     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(4294967296ll));
  50     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(9223372036854775807ull));
  51     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(9223372036854775808ull));
  52
  53     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-1));
  54     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-127));
  55     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-128));
  56     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-129));
  57     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-255));
  58     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-256));
  59     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-32767));
  60     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-32768));
  61     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-32769));
  62     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-65535));
  63     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-65536));
  64     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-2147483647ll));
  65     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-2147483648ll));
  66     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-2147483649ll));
  67     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-4294967295ll));
  68     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-4294967296ll));
  69     NL_TEST_ASSERT(inSuite, !CanCastTo<uint8_t>(-9223372036854775807ll));
  70
  71     NL_TEST_ASSERT(inSuite, CanCastTo<int8_t>(0));
  72     NL_TEST_ASSERT(inSuite, CanCastTo<int8_t>(127));
  73     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(128));
  74     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(129));
  75     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(255));
  76     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(256));
  77     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(32767));
  78     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(32768));
  79     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(32769));
  80     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(65535));
  81     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(65536));
  82     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(2147483647ll));
  83     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(2147483648ll));
  84     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(2147483649ll));
  85     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(4294967295ll));
  86     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(4294967296ll));
  87     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(9223372036854775807ull));
  88     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(9223372036854775808ull));
  89
  90     NL_TEST_ASSERT(inSuite, CanCastTo<int8_t>(-1));
  91     NL_TEST_ASSERT(inSuite, CanCastTo<int8_t>(-127));
  92     NL_TEST_ASSERT(inSuite, CanCastTo<int8_t>(-128));
  93     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-129));
  94     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-255));
  95     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-256));
  96     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-32767));
  97     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-32768));
  98     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-32769));
  99     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-65535));
 100     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-65536));
 101     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-2147483647ll));
 102     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-2147483648ll));
 103     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-2147483649ll));
 104     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-4294967295ll));
 105     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-4294967296ll));
 106     NL_TEST_ASSERT(inSuite, !CanCastTo<int8_t>(-9223372036854775807ll));
 107 }
 108
 109 static void TestCanCastTo_Int16(nlTestSuite * inSuite, void * inContext)
 110 {
 111     NL_TEST_ASSERT(inSuite, CanCastTo<uint16_t>(0));
 112     NL_TEST_ASSERT(inSuite, CanCastTo<uint16_t>(127));
 113     NL_TEST_ASSERT(inSuite, CanCastTo<uint16_t>(128));
 114     NL_TEST_ASSERT(inSuite, CanCastTo<uint16_t>(129));
 115     NL_TEST_ASSERT(inSuite, CanCastTo<uint16_t>(255));
 116     NL_TEST_ASSERT(inSuite, CanCastTo<uint16_t>(256));
 117     NL_TEST_ASSERT(inSuite, CanCastTo<uint16_t>(32767));
 118     NL_TEST_ASSERT(inSuite, CanCastTo<uint16_t>(32768));
 119     NL_TEST_ASSERT(inSuite, CanCastTo<uint16_t>(32769));
 120     NL_TEST_ASSERT(inSuite, CanCastTo<uint16_t>(65535));
 121     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(65536));
 122     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(2147483647ll));
 123     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(2147483648ll));
 124     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(2147483649ll));
 125     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(4294967295ll));
 126     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(4294967296ll));
 127     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(9223372036854775807ull));
 128     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(9223372036854775808ull));
 129
 130     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-1));
 131     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-127));
 132     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-128));
 133     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-129));
 134     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-255));
 135     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-256));
 136     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-32767));
 137     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-32768));
 138     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-32769));
 139     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-65535));
 140     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-65536));
 141     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-2147483647ll));
 142     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-2147483648ll));
 143     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-2147483649ll));
 144     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-4294967295ll));
 145     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-4294967296ll));
 146     NL_TEST_ASSERT(inSuite, !CanCastTo<uint16_t>(-9223372036854775807ll));
 147
 148     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(0));
 149     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(127));
 150     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(128));
 151     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(129));
 152     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(255));
 153     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(256));
 154     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(32767));
 155     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(32768));
 156     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(32769));
 157     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(65535));
 158     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(65536));
 159     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(2147483647ll));
 160     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(2147483648ll));
 161     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(2147483649ll));
 162     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(4294967295ll));
 163     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(4294967296ll));
 164     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(9223372036854775807ull));
 165     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(9223372036854775808ull));
 166
 167     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(-1));
 168     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(-127));
 169     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(-128));
 170     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(-129));
 171     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(-255));
 172     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(-256));
 173     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(-32767));
 174     NL_TEST_ASSERT(inSuite, CanCastTo<int16_t>(-32768));
 175     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(-32769));
 176     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(-65535));
 177     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(-65536));
 178     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(-2147483647ll));
 179     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(-2147483648ll));
 180     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(-2147483649ll));
 181     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(-4294967295ll));
 182     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(-4294967296ll));
 183     NL_TEST_ASSERT(inSuite, !CanCastTo<int16_t>(-9223372036854775807ll));
 184 }
 185
 186 static void TestCanCastTo_Int32(nlTestSuite * inSuite, void * inContext)
 187 {
 188     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(0));
 189     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(127));
 190     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(128));
 191     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(129));
 192     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(255));
 193     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(256));
 194     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(32767));
 195     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(32768));
 196     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(32769));
 197     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(65535));
 198     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(65536));
 199     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(2147483647ll));
 200     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(2147483648ll));
 201     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(2147483649ll));
 202     NL_TEST_ASSERT(inSuite, CanCastTo<uint32_t>(4294967295ll));
 203     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(4294967296ll));
 204     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(9223372036854775807ull));
 205     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(9223372036854775808ull));
 206
 207     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-1));
 208     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-127));
 209     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-128));
 210     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-129));
 211     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-255));
 212     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-256));
 213     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-32767));
 214     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-32768));
 215     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-32769));
 216     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-65535));
 217     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-65536));
 218     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-2147483647ll));
 219     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-2147483648ll));
 220     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-2147483649ll));
 221     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-4294967295ll));
 222     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-4294967296ll));
 223     NL_TEST_ASSERT(inSuite, !CanCastTo<uint32_t>(-9223372036854775807ll));
 224
 225     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(0));
 226     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(127));
 227     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(128));
 228     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(129));
 229     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(255));
 230     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(256));
 231     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(32767));
 232     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(32768));
 233     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(32769));
 234     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(65535));
 235     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(65536));
 236     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(2147483647ll));
 237     NL_TEST_ASSERT(inSuite, !CanCastTo<int32_t>(2147483648ll));
 238     NL_TEST_ASSERT(inSuite, !CanCastTo<int32_t>(2147483649ll));
 239     NL_TEST_ASSERT(inSuite, !CanCastTo<int32_t>(4294967295ll));
 240     NL_TEST_ASSERT(inSuite, !CanCastTo<int32_t>(4294967296ll));
 241     NL_TEST_ASSERT(inSuite, !CanCastTo<int32_t>(9223372036854775807ull));
 242     NL_TEST_ASSERT(inSuite, !CanCastTo<int32_t>(9223372036854775808ull));
 243
 244     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-1));
 245     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-127));
 246     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-128));
 247     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-129));
 248     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-255));
 249     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-256));
 250     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-32767));
 251     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-32768));
 252     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-32769));
 253     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-65535));
 254     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-65536));
 255     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-2147483647ll));
 256     NL_TEST_ASSERT(inSuite, CanCastTo<int32_t>(-2147483648ll));
 257     NL_TEST_ASSERT(inSuite, !CanCastTo<int32_t>(-2147483649ll));
 258     NL_TEST_ASSERT(inSuite, !CanCastTo<int32_t>(-4294967295ll));
 259     NL_TEST_ASSERT(inSuite, !CanCastTo<int32_t>(-4294967296ll));
 260     NL_TEST_ASSERT(inSuite, !CanCastTo<int32_t>(-9223372036854775807ll));
 261 }
 262
 263 static void TestCanCastTo_Int64(nlTestSuite * inSuite, void * inContext)
 264 {
 265     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(0));
 266     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(127));
 267     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(128));
 268     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(129));
 269     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(255));
 270     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(256));
 271     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(32767));
 272     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(32768));
 273     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(32769));
 274     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(65535));
 275     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(65536));
 276     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(2147483647ll));
 277     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(2147483648ll));
 278     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(2147483649ll));
 279     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(4294967295ll));
 280     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(4294967296ll));
 281     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(9223372036854775807ull));
 282     NL_TEST_ASSERT(inSuite, CanCastTo<uint64_t>(9223372036854775808ull));
 283
 284     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-1));
 285     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-127));
 286     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-128));
 287     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-129));
 288     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-255));
 289     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-256));
 290     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-32767));
 291     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-32768));
 292     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-32769));
 293     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-65535));
 294     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-65536));
 295     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-2147483647ll));
 296     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-2147483648ll));
 297     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-2147483649ll));
 298     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-4294967295ll));
 299     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-4294967296ll));
 300     NL_TEST_ASSERT(inSuite, !CanCastTo<uint64_t>(-9223372036854775807ll));
 301
 302     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(0));
 303     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(127));
 304     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(128));
 305     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(129));
 306     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(255));
 307     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(256));
 308     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(32767));
 309     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(32768));
 310     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(32769));
 311     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(65535));
 312     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(65536));
 313     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(2147483647ll));
 314     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(2147483648ll));
 315     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(2147483649ll));
 316     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(4294967295ll));
 317     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(4294967296ll));
 318     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(9223372036854775807ull));
 319     NL_TEST_ASSERT(inSuite, !CanCastTo<int64_t>(9223372036854775808ull));
 320
 321     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-1));
 322     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-127));
 323     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-128));
 324     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-129));
 325     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-255));
 326     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-256));
 327     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-32767));
 328     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-32768));
 329     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-32769));
 330     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-65535));
 331     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-65536));
 332     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-2147483647ll));
 333     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-2147483648ll));
 334     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-2147483649ll));
 335     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-4294967295ll));
 336     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-4294967296ll));
 337     NL_TEST_ASSERT(inSuite, CanCastTo<int64_t>(-9223372036854775807ll));
 338 }
 339
 340 static void TestCastToSigned(nlTestSuite * inSuite, void * inContext)
 341 {
 342     NL_TEST_ASSERT(inSuite, CastToSigned(static_cast<uint8_t>(5)) == 5);
 343     NL_TEST_ASSERT(inSuite, CastToSigned(static_cast<uint8_t>(-5)) == -5);
 344     NL_TEST_ASSERT(inSuite, CastToSigned(static_cast<uint8_t>(254)) == -2);
 345     NL_TEST_ASSERT(inSuite, CastToSigned(static_cast<uint8_t>(65533)) == -3);
 346     NL_TEST_ASSERT(inSuite, CastToSigned(static_cast<uint16_t>(254)) == 254);
 347     NL_TEST_ASSERT(inSuite, CastToSigned(static_cast<uint16_t>(65533)) == -3);
 348 }
 349
 350 #define NL_TEST_DEF_FN(fn) NL_TEST_DEF("Test " #fn, fn)
 351 /**
 352  *   Test Suite. It lists all the test functions.
 353  */
 354 static const nlTest sTests[] = { NL_TEST_DEF_FN(TestCanCastTo_Int8),  NL_TEST_DEF_FN(TestCanCastTo_Int16),
 355                                  NL_TEST_DEF_FN(TestCanCastTo_Int32), NL_TEST_DEF_FN(TestCanCastTo_Int64),
 356                                  NL_TEST_DEF_FN(TestCastToSigned),    NL_TEST_SENTINEL() };
 357
 358 int TestSafeInt(void)
 359 {
 360     nlTestSuite theSuite = { "CHIP SafeInt tests", &sTests[0], nullptr, nullptr };
 361
 362     // Run test suit againt one context.
 363     nlTestRunner(&theSuite, nullptr);
 364     return nlTestRunnerStats(&theSuite);
 365 }
 366
 367 CHIP_REGISTER_TEST_SUITE(TestSafeInt)