1 // Copyright 2007, Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above 11 // copyright notice, this list of conditions and the following disclaimer 12 // in the documentation and/or other materials provided with the 13 // distribution. 14 // * Neither the name of Google Inc. nor the names of its 15 // contributors may be used to endorse or promote products derived from 16 // this software without specific prior written permission. 17 // 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 31 // Google Test - The Google C++ Testing and Mocking Framework 32 // 33 // This file tests the universal value printer. 34 35 #include <ctype.h> 36 #include <limits.h> 37 #include <string.h> 38 #include <algorithm> 39 #include <deque> 40 #include <list> 41 #include <map> 42 #include <set> 43 #include <sstream> 44 #include <string> 45 #include <utility> 46 #include <vector> 47 48 #include "gtest/gtest-printers.h" 49 #include "gtest/gtest.h" 50 51 #if GTEST_HAS_UNORDERED_MAP_ 52 # include <unordered_map> // NOLINT 53 #endif // GTEST_HAS_UNORDERED_MAP_ 54 55 #if GTEST_HAS_UNORDERED_SET_ 56 # include <unordered_set> // NOLINT 57 #endif // GTEST_HAS_UNORDERED_SET_ 58 59 #if GTEST_HAS_STD_FORWARD_LIST_ 60 # include <forward_list> // NOLINT 61 #endif // GTEST_HAS_STD_FORWARD_LIST_ 62 63 // Some user-defined types for testing the universal value printer. 64 65 // An anonymous enum type. 66 enum AnonymousEnum { 67 kAE1 = -1, 68 kAE2 = 1 69 }; 70 71 // An enum without a user-defined printer. 72 enum EnumWithoutPrinter { 73 kEWP1 = -2, 74 kEWP2 = 42 75 }; 76 77 // An enum with a << operator. 78 enum EnumWithStreaming { 79 kEWS1 = 10 80 }; 81 82 std::ostream& operator<<(std::ostream& os, EnumWithStreaming e) { 83 return os << (e == kEWS1 ? "kEWS1" : "invalid"); 84 } 85 86 // An enum with a PrintTo() function. 87 enum EnumWithPrintTo { 88 kEWPT1 = 1 89 }; 90 91 void PrintTo(EnumWithPrintTo e, std::ostream* os) { 92 *os << (e == kEWPT1 ? "kEWPT1" : "invalid"); 93 } 94 95 // A class implicitly convertible to BiggestInt. 96 class BiggestIntConvertible { 97 public: 98 operator ::testing::internal::BiggestInt() const { return 42; } 99 }; 100 101 // A user-defined unprintable class template in the global namespace. 102 template <typename T> 103 class UnprintableTemplateInGlobal { 104 public: 105 UnprintableTemplateInGlobal() : value_() {} 106 private: 107 T value_; 108 }; 109 110 // A user-defined streamable type in the global namespace. 111 class StreamableInGlobal { 112 public: 113 virtual ~StreamableInGlobal() {} 114 }; 115 116 inline void operator<<(::std::ostream& os, const StreamableInGlobal& /* x */) { 117 os << "StreamableInGlobal"; 118 } 119 120 void operator<<(::std::ostream& os, const StreamableInGlobal* /* x */) { 121 os << "StreamableInGlobal*"; 122 } 123 124 namespace foo { 125 126 // A user-defined unprintable type in a user namespace. 127 class UnprintableInFoo { 128 public: 129 UnprintableInFoo() : z_(0) { memcpy(xy_, "\xEF\x12\x0\x0\x34\xAB\x0\x0", 8); } 130 double z() const { return z_; } 131 private: 132 char xy_[8]; 133 double z_; 134 }; 135 136 // A user-defined printable type in a user-chosen namespace. 137 struct PrintableViaPrintTo { 138 PrintableViaPrintTo() : value() {} 139 int value; 140 }; 141 142 void PrintTo(const PrintableViaPrintTo& x, ::std::ostream* os) { 143 *os << "PrintableViaPrintTo: " << x.value; 144 } 145 146 // A type with a user-defined << for printing its pointer. 147 struct PointerPrintable { 148 }; 149 150 ::std::ostream& operator<<(::std::ostream& os, 151 const PointerPrintable* /* x */) { 152 return os << "PointerPrintable*"; 153 } 154 155 // A user-defined printable class template in a user-chosen namespace. 156 template <typename T> 157 class PrintableViaPrintToTemplate { 158 public: 159 explicit PrintableViaPrintToTemplate(const T& a_value) : value_(a_value) {} 160 161 const T& value() const { return value_; } 162 private: 163 T value_; 164 }; 165 166 template <typename T> 167 void PrintTo(const PrintableViaPrintToTemplate<T>& x, ::std::ostream* os) { 168 *os << "PrintableViaPrintToTemplate: " << x.value(); 169 } 170 171 // A user-defined streamable class template in a user namespace. 172 template <typename T> 173 class StreamableTemplateInFoo { 174 public: 175 StreamableTemplateInFoo() : value_() {} 176 177 const T& value() const { return value_; } 178 private: 179 T value_; 180 }; 181 182 template <typename T> 183 inline ::std::ostream& operator<<(::std::ostream& os, 184 const StreamableTemplateInFoo<T>& x) { 185 return os << "StreamableTemplateInFoo: " << x.value(); 186 } 187 188 // A user-defined streamable but recursivly-defined container type in 189 // a user namespace, it mimics therefore std::filesystem::path or 190 // boost::filesystem::path. 191 class PathLike { 192 public: 193 struct iterator { 194 typedef PathLike value_type; 195 }; 196 197 PathLike() {} 198 199 iterator begin() const { return iterator(); } 200 iterator end() const { return iterator(); } 201 202 friend ::std::ostream& operator<<(::std::ostream& os, const PathLike&) { 203 return os << "Streamable-PathLike"; 204 } 205 }; 206 207 } // namespace foo 208 209 namespace testing { 210 namespace gtest_printers_test { 211 212 using ::std::deque; 213 using ::std::list; 214 using ::std::make_pair; 215 using ::std::map; 216 using ::std::multimap; 217 using ::std::multiset; 218 using ::std::pair; 219 using ::std::set; 220 using ::std::vector; 221 using ::testing::PrintToString; 222 using ::testing::internal::FormatForComparisonFailureMessage; 223 using ::testing::internal::ImplicitCast_; 224 using ::testing::internal::NativeArray; 225 using ::testing::internal::RE; 226 using ::testing::internal::RelationToSourceReference; 227 using ::testing::internal::Strings; 228 using ::testing::internal::UniversalPrint; 229 using ::testing::internal::UniversalPrinter; 230 using ::testing::internal::UniversalTersePrint; 231 #if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_ 232 using ::testing::internal::UniversalTersePrintTupleFieldsToStrings; 233 #endif 234 235 // Prints a value to a string using the universal value printer. This 236 // is a helper for testing UniversalPrinter<T>::Print() for various types. 237 template <typename T> 238 std::string Print(const T& value) { 239 ::std::stringstream ss; 240 UniversalPrinter<T>::Print(value, &ss); 241 return ss.str(); 242 } 243 244 // Prints a value passed by reference to a string, using the universal 245 // value printer. This is a helper for testing 246 // UniversalPrinter<T&>::Print() for various types. 247 template <typename T> 248 std::string PrintByRef(const T& value) { 249 ::std::stringstream ss; 250 UniversalPrinter<T&>::Print(value, &ss); 251 return ss.str(); 252 } 253 254 // Tests printing various enum types. 255 256 TEST(PrintEnumTest, AnonymousEnum) { 257 EXPECT_EQ("-1", Print(kAE1)); 258 EXPECT_EQ("1", Print(kAE2)); 259 } 260 261 TEST(PrintEnumTest, EnumWithoutPrinter) { 262 EXPECT_EQ("-2", Print(kEWP1)); 263 EXPECT_EQ("42", Print(kEWP2)); 264 } 265 266 TEST(PrintEnumTest, EnumWithStreaming) { 267 EXPECT_EQ("kEWS1", Print(kEWS1)); 268 EXPECT_EQ("invalid", Print(static_cast<EnumWithStreaming>(0))); 269 } 270 271 TEST(PrintEnumTest, EnumWithPrintTo) { 272 EXPECT_EQ("kEWPT1", Print(kEWPT1)); 273 EXPECT_EQ("invalid", Print(static_cast<EnumWithPrintTo>(0))); 274 } 275 276 // Tests printing a class implicitly convertible to BiggestInt. 277 278 TEST(PrintClassTest, BiggestIntConvertible) { 279 EXPECT_EQ("42", Print(BiggestIntConvertible())); 280 } 281 282 // Tests printing various char types. 283 284 // char. 285 TEST(PrintCharTest, PlainChar) { 286 EXPECT_EQ("'\\0'", Print('\0')); 287 EXPECT_EQ("'\\'' (39, 0x27)", Print('\'')); 288 EXPECT_EQ("'\"' (34, 0x22)", Print('"')); 289 EXPECT_EQ("'?' (63, 0x3F)", Print('?')); 290 EXPECT_EQ("'\\\\' (92, 0x5C)", Print('\\')); 291 EXPECT_EQ("'\\a' (7)", Print('\a')); 292 EXPECT_EQ("'\\b' (8)", Print('\b')); 293 EXPECT_EQ("'\\f' (12, 0xC)", Print('\f')); 294 EXPECT_EQ("'\\n' (10, 0xA)", Print('\n')); 295 EXPECT_EQ("'\\r' (13, 0xD)", Print('\r')); 296 EXPECT_EQ("'\\t' (9)", Print('\t')); 297 EXPECT_EQ("'\\v' (11, 0xB)", Print('\v')); 298 EXPECT_EQ("'\\x7F' (127)", Print('\x7F')); 299 EXPECT_EQ("'\\xFF' (255)", Print('\xFF')); 300 EXPECT_EQ("' ' (32, 0x20)", Print(' ')); 301 EXPECT_EQ("'a' (97, 0x61)", Print('a')); 302 } 303 304 // signed char. 305 TEST(PrintCharTest, SignedChar) { 306 EXPECT_EQ("'\\0'", Print(static_cast<signed char>('\0'))); 307 EXPECT_EQ("'\\xCE' (-50)", 308 Print(static_cast<signed char>(-50))); 309 } 310 311 // unsigned char. 312 TEST(PrintCharTest, UnsignedChar) { 313 EXPECT_EQ("'\\0'", Print(static_cast<unsigned char>('\0'))); 314 EXPECT_EQ("'b' (98, 0x62)", 315 Print(static_cast<unsigned char>('b'))); 316 } 317 318 // Tests printing other simple, built-in types. 319 320 // bool. 321 TEST(PrintBuiltInTypeTest, Bool) { 322 EXPECT_EQ("false", Print(false)); 323 EXPECT_EQ("true", Print(true)); 324 } 325 326 // wchar_t. 327 TEST(PrintBuiltInTypeTest, Wchar_t) { 328 EXPECT_EQ("L'\\0'", Print(L'\0')); 329 EXPECT_EQ("L'\\'' (39, 0x27)", Print(L'\'')); 330 EXPECT_EQ("L'\"' (34, 0x22)", Print(L'"')); 331 EXPECT_EQ("L'?' (63, 0x3F)", Print(L'?')); 332 EXPECT_EQ("L'\\\\' (92, 0x5C)", Print(L'\\')); 333 EXPECT_EQ("L'\\a' (7)", Print(L'\a')); 334 EXPECT_EQ("L'\\b' (8)", Print(L'\b')); 335 EXPECT_EQ("L'\\f' (12, 0xC)", Print(L'\f')); 336 EXPECT_EQ("L'\\n' (10, 0xA)", Print(L'\n')); 337 EXPECT_EQ("L'\\r' (13, 0xD)", Print(L'\r')); 338 EXPECT_EQ("L'\\t' (9)", Print(L'\t')); 339 EXPECT_EQ("L'\\v' (11, 0xB)", Print(L'\v')); 340 EXPECT_EQ("L'\\x7F' (127)", Print(L'\x7F')); 341 EXPECT_EQ("L'\\xFF' (255)", Print(L'\xFF')); 342 EXPECT_EQ("L' ' (32, 0x20)", Print(L' ')); 343 EXPECT_EQ("L'a' (97, 0x61)", Print(L'a')); 344 EXPECT_EQ("L'\\x576' (1398)", Print(static_cast<wchar_t>(0x576))); 345 EXPECT_EQ("L'\\xC74D' (51021)", Print(static_cast<wchar_t>(0xC74D))); 346 } 347 348 // Test that Int64 provides more storage than wchar_t. 349 TEST(PrintTypeSizeTest, Wchar_t) { 350 EXPECT_LT(sizeof(wchar_t), sizeof(testing::internal::Int64)); 351 } 352 353 // Various integer types. 354 TEST(PrintBuiltInTypeTest, Integer) { 355 EXPECT_EQ("'\\xFF' (255)", Print(static_cast<unsigned char>(255))); // uint8 356 EXPECT_EQ("'\\x80' (-128)", Print(static_cast<signed char>(-128))); // int8 357 EXPECT_EQ("65535", Print(USHRT_MAX)); // uint16 358 EXPECT_EQ("-32768", Print(SHRT_MIN)); // int16 359 EXPECT_EQ("4294967295", Print(UINT_MAX)); // uint32 360 EXPECT_EQ("-2147483648", Print(INT_MIN)); // int32 361 EXPECT_EQ("18446744073709551615", 362 Print(static_cast<testing::internal::UInt64>(-1))); // uint64 363 EXPECT_EQ("-9223372036854775808", 364 Print(static_cast<testing::internal::Int64>(1) << 63)); // int64 365 } 366 367 // Size types. 368 TEST(PrintBuiltInTypeTest, Size_t) { 369 EXPECT_EQ("1", Print(sizeof('a'))); // size_t. 370 #if !GTEST_OS_WINDOWS 371 // Windows has no ssize_t type. 372 EXPECT_EQ("-2", Print(static_cast<ssize_t>(-2))); // ssize_t. 373 #endif // !GTEST_OS_WINDOWS 374 } 375 376 // Floating-points. 377 TEST(PrintBuiltInTypeTest, FloatingPoints) { 378 EXPECT_EQ("1.5", Print(1.5f)); // float 379 EXPECT_EQ("-2.5", Print(-2.5)); // double 380 } 381 382 // Since ::std::stringstream::operator<<(const void *) formats the pointer 383 // output differently with different compilers, we have to create the expected 384 // output first and use it as our expectation. 385 static std::string PrintPointer(const void* p) { 386 ::std::stringstream expected_result_stream; 387 expected_result_stream << p; 388 return expected_result_stream.str(); 389 } 390 391 // Tests printing C strings. 392 393 // const char*. 394 TEST(PrintCStringTest, Const) { 395 const char* p = "World"; 396 EXPECT_EQ(PrintPointer(p) + " pointing to \"World\"", Print(p)); 397 } 398 399 // char*. 400 TEST(PrintCStringTest, NonConst) { 401 char p[] = "Hi"; 402 EXPECT_EQ(PrintPointer(p) + " pointing to \"Hi\"", 403 Print(static_cast<char*>(p))); 404 } 405 406 // NULL C string. 407 TEST(PrintCStringTest, Null) { 408 const char* p = NULL; 409 EXPECT_EQ("NULL", Print(p)); 410 } 411 412 // Tests that C strings are escaped properly. 413 TEST(PrintCStringTest, EscapesProperly) { 414 const char* p = "'\"?\\\a\b\f\n\r\t\v\x7F\xFF a"; 415 EXPECT_EQ(PrintPointer(p) + " pointing to \"'\\\"?\\\\\\a\\b\\f" 416 "\\n\\r\\t\\v\\x7F\\xFF a\"", 417 Print(p)); 418 } 419 420 // MSVC compiler can be configured to define whar_t as a typedef 421 // of unsigned short. Defining an overload for const wchar_t* in that case 422 // would cause pointers to unsigned shorts be printed as wide strings, 423 // possibly accessing more memory than intended and causing invalid 424 // memory accesses. MSVC defines _NATIVE_WCHAR_T_DEFINED symbol when 425 // wchar_t is implemented as a native type. 426 #if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED) 427 428 // const wchar_t*. 429 TEST(PrintWideCStringTest, Const) { 430 const wchar_t* p = L"World"; 431 EXPECT_EQ(PrintPointer(p) + " pointing to L\"World\"", Print(p)); 432 } 433 434 // wchar_t*. 435 TEST(PrintWideCStringTest, NonConst) { 436 wchar_t p[] = L"Hi"; 437 EXPECT_EQ(PrintPointer(p) + " pointing to L\"Hi\"", 438 Print(static_cast<wchar_t*>(p))); 439 } 440 441 // NULL wide C string. 442 TEST(PrintWideCStringTest, Null) { 443 const wchar_t* p = NULL; 444 EXPECT_EQ("NULL", Print(p)); 445 } 446 447 // Tests that wide C strings are escaped properly. 448 TEST(PrintWideCStringTest, EscapesProperly) { 449 const wchar_t s[] = {'\'', '"', '?', '\\', '\a', '\b', '\f', '\n', '\r', 450 '\t', '\v', 0xD3, 0x576, 0x8D3, 0xC74D, ' ', 'a', '\0'}; 451 EXPECT_EQ(PrintPointer(s) + " pointing to L\"'\\\"?\\\\\\a\\b\\f" 452 "\\n\\r\\t\\v\\xD3\\x576\\x8D3\\xC74D a\"", 453 Print(static_cast<const wchar_t*>(s))); 454 } 455 #endif // native wchar_t 456 457 // Tests printing pointers to other char types. 458 459 // signed char*. 460 TEST(PrintCharPointerTest, SignedChar) { 461 signed char* p = reinterpret_cast<signed char*>(0x1234); 462 EXPECT_EQ(PrintPointer(p), Print(p)); 463 p = NULL; 464 EXPECT_EQ("NULL", Print(p)); 465 } 466 467 // const signed char*. 468 TEST(PrintCharPointerTest, ConstSignedChar) { 469 signed char* p = reinterpret_cast<signed char*>(0x1234); 470 EXPECT_EQ(PrintPointer(p), Print(p)); 471 p = NULL; 472 EXPECT_EQ("NULL", Print(p)); 473 } 474 475 // unsigned char*. 476 TEST(PrintCharPointerTest, UnsignedChar) { 477 unsigned char* p = reinterpret_cast<unsigned char*>(0x1234); 478 EXPECT_EQ(PrintPointer(p), Print(p)); 479 p = NULL; 480 EXPECT_EQ("NULL", Print(p)); 481 } 482 483 // const unsigned char*. 484 TEST(PrintCharPointerTest, ConstUnsignedChar) { 485 const unsigned char* p = reinterpret_cast<const unsigned char*>(0x1234); 486 EXPECT_EQ(PrintPointer(p), Print(p)); 487 p = NULL; 488 EXPECT_EQ("NULL", Print(p)); 489 } 490 491 // Tests printing pointers to simple, built-in types. 492 493 // bool*. 494 TEST(PrintPointerToBuiltInTypeTest, Bool) { 495 bool* p = reinterpret_cast<bool*>(0xABCD); 496 EXPECT_EQ(PrintPointer(p), Print(p)); 497 p = NULL; 498 EXPECT_EQ("NULL", Print(p)); 499 } 500 501 // void*. 502 TEST(PrintPointerToBuiltInTypeTest, Void) { 503 void* p = reinterpret_cast<void*>(0xABCD); 504 EXPECT_EQ(PrintPointer(p), Print(p)); 505 p = NULL; 506 EXPECT_EQ("NULL", Print(p)); 507 } 508 509 // const void*. 510 TEST(PrintPointerToBuiltInTypeTest, ConstVoid) { 511 const void* p = reinterpret_cast<const void*>(0xABCD); 512 EXPECT_EQ(PrintPointer(p), Print(p)); 513 p = NULL; 514 EXPECT_EQ("NULL", Print(p)); 515 } 516 517 // Tests printing pointers to pointers. 518 TEST(PrintPointerToPointerTest, IntPointerPointer) { 519 int** p = reinterpret_cast<int**>(0xABCD); 520 EXPECT_EQ(PrintPointer(p), Print(p)); 521 p = NULL; 522 EXPECT_EQ("NULL", Print(p)); 523 } 524 525 // Tests printing (non-member) function pointers. 526 527 void MyFunction(int /* n */) {} 528 529 TEST(PrintPointerTest, NonMemberFunctionPointer) { 530 // We cannot directly cast &MyFunction to const void* because the 531 // standard disallows casting between pointers to functions and 532 // pointers to objects, and some compilers (e.g. GCC 3.4) enforce 533 // this limitation. 534 EXPECT_EQ( 535 PrintPointer(reinterpret_cast<const void*>( 536 reinterpret_cast<internal::BiggestInt>(&MyFunction))), 537 Print(&MyFunction)); 538 int (*p)(bool) = NULL; // NOLINT 539 EXPECT_EQ("NULL", Print(p)); 540 } 541 542 // An assertion predicate determining whether a one string is a prefix for 543 // another. 544 template <typename StringType> 545 AssertionResult HasPrefix(const StringType& str, const StringType& prefix) { 546 if (str.find(prefix, 0) == 0) 547 return AssertionSuccess(); 548 549 const bool is_wide_string = sizeof(prefix[0]) > 1; 550 const char* const begin_string_quote = is_wide_string ? "L\"" : "\""; 551 return AssertionFailure() 552 << begin_string_quote << prefix << "\" is not a prefix of " 553 << begin_string_quote << str << "\"\n"; 554 } 555 556 // Tests printing member variable pointers. Although they are called 557 // pointers, they don't point to a location in the address space. 558 // Their representation is implementation-defined. Thus they will be 559 // printed as raw bytes. 560 561 struct Foo { 562 public: 563 virtual ~Foo() {} 564 int MyMethod(char x) { return x + 1; } 565 virtual char MyVirtualMethod(int /* n */) { return 'a'; } 566 567 int value; 568 }; 569 570 TEST(PrintPointerTest, MemberVariablePointer) { 571 EXPECT_TRUE(HasPrefix(Print(&Foo::value), 572 Print(sizeof(&Foo::value)) + "-byte object ")); 573 int Foo::*p = NULL; // NOLINT 574 EXPECT_TRUE(HasPrefix(Print(p), 575 Print(sizeof(p)) + "-byte object ")); 576 } 577 578 // Tests printing member function pointers. Although they are called 579 // pointers, they don't point to a location in the address space. 580 // Their representation is implementation-defined. Thus they will be 581 // printed as raw bytes. 582 TEST(PrintPointerTest, MemberFunctionPointer) { 583 EXPECT_TRUE(HasPrefix(Print(&Foo::MyMethod), 584 Print(sizeof(&Foo::MyMethod)) + "-byte object ")); 585 EXPECT_TRUE( 586 HasPrefix(Print(&Foo::MyVirtualMethod), 587 Print(sizeof((&Foo::MyVirtualMethod))) + "-byte object ")); 588 int (Foo::*p)(char) = NULL; // NOLINT 589 EXPECT_TRUE(HasPrefix(Print(p), 590 Print(sizeof(p)) + "-byte object ")); 591 } 592 593 // Tests printing C arrays. 594 595 // The difference between this and Print() is that it ensures that the 596 // argument is a reference to an array. 597 template <typename T, size_t N> 598 std::string PrintArrayHelper(T (&a)[N]) { 599 return Print(a); 600 } 601 602 // One-dimensional array. 603 TEST(PrintArrayTest, OneDimensionalArray) { 604 int a[5] = { 1, 2, 3, 4, 5 }; 605 EXPECT_EQ("{ 1, 2, 3, 4, 5 }", PrintArrayHelper(a)); 606 } 607 608 // Two-dimensional array. 609 TEST(PrintArrayTest, TwoDimensionalArray) { 610 int a[2][5] = { 611 { 1, 2, 3, 4, 5 }, 612 { 6, 7, 8, 9, 0 } 613 }; 614 EXPECT_EQ("{ { 1, 2, 3, 4, 5 }, { 6, 7, 8, 9, 0 } }", PrintArrayHelper(a)); 615 } 616 617 // Array of const elements. 618 TEST(PrintArrayTest, ConstArray) { 619 const bool a[1] = { false }; 620 EXPECT_EQ("{ false }", PrintArrayHelper(a)); 621 } 622 623 // char array without terminating NUL. 624 TEST(PrintArrayTest, CharArrayWithNoTerminatingNul) { 625 // Array a contains '\0' in the middle and doesn't end with '\0'. 626 char a[] = { 'H', '\0', 'i' }; 627 EXPECT_EQ("\"H\\0i\" (no terminating NUL)", PrintArrayHelper(a)); 628 } 629 630 // const char array with terminating NUL. 631 TEST(PrintArrayTest, ConstCharArrayWithTerminatingNul) { 632 const char a[] = "\0Hi"; 633 EXPECT_EQ("\"\\0Hi\"", PrintArrayHelper(a)); 634 } 635 636 // const wchar_t array without terminating NUL. 637 TEST(PrintArrayTest, WCharArrayWithNoTerminatingNul) { 638 // Array a contains '\0' in the middle and doesn't end with '\0'. 639 const wchar_t a[] = { L'H', L'\0', L'i' }; 640 EXPECT_EQ("L\"H\\0i\" (no terminating NUL)", PrintArrayHelper(a)); 641 } 642 643 // wchar_t array with terminating NUL. 644 TEST(PrintArrayTest, WConstCharArrayWithTerminatingNul) { 645 const wchar_t a[] = L"\0Hi"; 646 EXPECT_EQ("L\"\\0Hi\"", PrintArrayHelper(a)); 647 } 648 649 // Array of objects. 650 TEST(PrintArrayTest, ObjectArray) { 651 std::string a[3] = {"Hi", "Hello", "Ni hao"}; 652 EXPECT_EQ("{ \"Hi\", \"Hello\", \"Ni hao\" }", PrintArrayHelper(a)); 653 } 654 655 // Array with many elements. 656 TEST(PrintArrayTest, BigArray) { 657 int a[100] = { 1, 2, 3 }; 658 EXPECT_EQ("{ 1, 2, 3, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0 }", 659 PrintArrayHelper(a)); 660 } 661 662 // Tests printing ::string and ::std::string. 663 664 #if GTEST_HAS_GLOBAL_STRING 665 // ::string. 666 TEST(PrintStringTest, StringInGlobalNamespace) { 667 const char s[] = "'\"?\\\a\b\f\n\0\r\t\v\x7F\xFF a"; 668 const ::string str(s, sizeof(s)); 669 EXPECT_EQ("\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v\\x7F\\xFF a\\0\"", 670 Print(str)); 671 } 672 #endif // GTEST_HAS_GLOBAL_STRING 673 674 // ::std::string. 675 TEST(PrintStringTest, StringInStdNamespace) { 676 const char s[] = "'\"?\\\a\b\f\n\0\r\t\v\x7F\xFF a"; 677 const ::std::string str(s, sizeof(s)); 678 EXPECT_EQ("\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v\\x7F\\xFF a\\0\"", 679 Print(str)); 680 } 681 682 TEST(PrintStringTest, StringAmbiguousHex) { 683 // "\x6BANANA" is ambiguous, it can be interpreted as starting with either of: 684 // '\x6', '\x6B', or '\x6BA'. 685 686 // a hex escaping sequence following by a decimal digit 687 EXPECT_EQ("\"0\\x12\" \"3\"", Print(::std::string("0\x12" "3"))); 688 // a hex escaping sequence following by a hex digit (lower-case) 689 EXPECT_EQ("\"mm\\x6\" \"bananas\"", Print(::std::string("mm\x6" "bananas"))); 690 // a hex escaping sequence following by a hex digit (upper-case) 691 EXPECT_EQ("\"NOM\\x6\" \"BANANA\"", Print(::std::string("NOM\x6" "BANANA"))); 692 // a hex escaping sequence following by a non-xdigit 693 EXPECT_EQ("\"!\\x5-!\"", Print(::std::string("!\x5-!"))); 694 } 695 696 // Tests printing ::wstring and ::std::wstring. 697 698 #if GTEST_HAS_GLOBAL_WSTRING 699 // ::wstring. 700 TEST(PrintWideStringTest, StringInGlobalNamespace) { 701 const wchar_t s[] = L"'\"?\\\a\b\f\n\0\r\t\v\xD3\x576\x8D3\xC74D a"; 702 const ::wstring str(s, sizeof(s)/sizeof(wchar_t)); 703 EXPECT_EQ("L\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v" 704 "\\xD3\\x576\\x8D3\\xC74D a\\0\"", 705 Print(str)); 706 } 707 #endif // GTEST_HAS_GLOBAL_WSTRING 708 709 #if GTEST_HAS_STD_WSTRING 710 // ::std::wstring. 711 TEST(PrintWideStringTest, StringInStdNamespace) { 712 const wchar_t s[] = L"'\"?\\\a\b\f\n\0\r\t\v\xD3\x576\x8D3\xC74D a"; 713 const ::std::wstring str(s, sizeof(s)/sizeof(wchar_t)); 714 EXPECT_EQ("L\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v" 715 "\\xD3\\x576\\x8D3\\xC74D a\\0\"", 716 Print(str)); 717 } 718 719 TEST(PrintWideStringTest, StringAmbiguousHex) { 720 // same for wide strings. 721 EXPECT_EQ("L\"0\\x12\" L\"3\"", Print(::std::wstring(L"0\x12" L"3"))); 722 EXPECT_EQ("L\"mm\\x6\" L\"bananas\"", 723 Print(::std::wstring(L"mm\x6" L"bananas"))); 724 EXPECT_EQ("L\"NOM\\x6\" L\"BANANA\"", 725 Print(::std::wstring(L"NOM\x6" L"BANANA"))); 726 EXPECT_EQ("L\"!\\x5-!\"", Print(::std::wstring(L"!\x5-!"))); 727 } 728 #endif // GTEST_HAS_STD_WSTRING 729 730 // Tests printing types that support generic streaming (i.e. streaming 731 // to std::basic_ostream<Char, CharTraits> for any valid Char and 732 // CharTraits types). 733 734 // Tests printing a non-template type that supports generic streaming. 735 736 class AllowsGenericStreaming {}; 737 738 template <typename Char, typename CharTraits> 739 std::basic_ostream<Char, CharTraits>& operator<<( 740 std::basic_ostream<Char, CharTraits>& os, 741 const AllowsGenericStreaming& /* a */) { 742 return os << "AllowsGenericStreaming"; 743 } 744 745 TEST(PrintTypeWithGenericStreamingTest, NonTemplateType) { 746 AllowsGenericStreaming a; 747 EXPECT_EQ("AllowsGenericStreaming", Print(a)); 748 } 749 750 // Tests printing a template type that supports generic streaming. 751 752 template <typename T> 753 class AllowsGenericStreamingTemplate {}; 754 755 template <typename Char, typename CharTraits, typename T> 756 std::basic_ostream<Char, CharTraits>& operator<<( 757 std::basic_ostream<Char, CharTraits>& os, 758 const AllowsGenericStreamingTemplate<T>& /* a */) { 759 return os << "AllowsGenericStreamingTemplate"; 760 } 761 762 TEST(PrintTypeWithGenericStreamingTest, TemplateType) { 763 AllowsGenericStreamingTemplate<int> a; 764 EXPECT_EQ("AllowsGenericStreamingTemplate", Print(a)); 765 } 766 767 // Tests printing a type that supports generic streaming and can be 768 // implicitly converted to another printable type. 769 770 template <typename T> 771 class AllowsGenericStreamingAndImplicitConversionTemplate { 772 public: 773 operator bool() const { return false; } 774 }; 775 776 template <typename Char, typename CharTraits, typename T> 777 std::basic_ostream<Char, CharTraits>& operator<<( 778 std::basic_ostream<Char, CharTraits>& os, 779 const AllowsGenericStreamingAndImplicitConversionTemplate<T>& /* a */) { 780 return os << "AllowsGenericStreamingAndImplicitConversionTemplate"; 781 } 782 783 TEST(PrintTypeWithGenericStreamingTest, TypeImplicitlyConvertible) { 784 AllowsGenericStreamingAndImplicitConversionTemplate<int> a; 785 EXPECT_EQ("AllowsGenericStreamingAndImplicitConversionTemplate", Print(a)); 786 } 787 788 #if GTEST_HAS_ABSL 789 790 // Tests printing ::absl::string_view. 791 792 TEST(PrintStringViewTest, SimpleStringView) { 793 const ::absl::string_view sp = "Hello"; 794 EXPECT_EQ("\"Hello\"", Print(sp)); 795 } 796 797 TEST(PrintStringViewTest, UnprintableCharacters) { 798 const char str[] = "NUL (\0) and \r\t"; 799 const ::absl::string_view sp(str, sizeof(str) - 1); 800 EXPECT_EQ("\"NUL (\\0) and \\r\\t\"", Print(sp)); 801 } 802 803 #endif // GTEST_HAS_ABSL 804 805 // Tests printing STL containers. 806 807 TEST(PrintStlContainerTest, EmptyDeque) { 808 deque<char> empty; 809 EXPECT_EQ("{}", Print(empty)); 810 } 811 812 TEST(PrintStlContainerTest, NonEmptyDeque) { 813 deque<int> non_empty; 814 non_empty.push_back(1); 815 non_empty.push_back(3); 816 EXPECT_EQ("{ 1, 3 }", Print(non_empty)); 817 } 818 819 #if GTEST_HAS_UNORDERED_MAP_ 820 821 TEST(PrintStlContainerTest, OneElementHashMap) { 822 ::std::unordered_map<int, char> map1; 823 map1[1] = 'a'; 824 EXPECT_EQ("{ (1, 'a' (97, 0x61)) }", Print(map1)); 825 } 826 827 TEST(PrintStlContainerTest, HashMultiMap) { 828 ::std::unordered_multimap<int, bool> map1; 829 map1.insert(make_pair(5, true)); 830 map1.insert(make_pair(5, false)); 831 832 // Elements of hash_multimap can be printed in any order. 833 const std::string result = Print(map1); 834 EXPECT_TRUE(result == "{ (5, true), (5, false) }" || 835 result == "{ (5, false), (5, true) }") 836 << " where Print(map1) returns \"" << result << "\"."; 837 } 838 839 #endif // GTEST_HAS_UNORDERED_MAP_ 840 841 #if GTEST_HAS_UNORDERED_SET_ 842 843 TEST(PrintStlContainerTest, HashSet) { 844 ::std::unordered_set<int> set1; 845 set1.insert(1); 846 EXPECT_EQ("{ 1 }", Print(set1)); 847 } 848 849 TEST(PrintStlContainerTest, HashMultiSet) { 850 const int kSize = 5; 851 int a[kSize] = { 1, 1, 2, 5, 1 }; 852 ::std::unordered_multiset<int> set1(a, a + kSize); 853 854 // Elements of hash_multiset can be printed in any order. 855 const std::string result = Print(set1); 856 const std::string expected_pattern = "{ d, d, d, d, d }"; // d means a digit. 857 858 // Verifies the result matches the expected pattern; also extracts 859 // the numbers in the result. 860 ASSERT_EQ(expected_pattern.length(), result.length()); 861 std::vector<int> numbers; 862 for (size_t i = 0; i != result.length(); i++) { 863 if (expected_pattern[i] == 'd') { 864 ASSERT_NE(isdigit(static_cast<unsigned char>(result[i])), 0); 865 numbers.push_back(result[i] - '0'); 866 } else { 867 EXPECT_EQ(expected_pattern[i], result[i]) << " where result is " 868 << result; 869 } 870 } 871 872 // Makes sure the result contains the right numbers. 873 std::sort(numbers.begin(), numbers.end()); 874 std::sort(a, a + kSize); 875 EXPECT_TRUE(std::equal(a, a + kSize, numbers.begin())); 876 } 877 878 #endif // GTEST_HAS_UNORDERED_SET_ 879 880 TEST(PrintStlContainerTest, List) { 881 const std::string a[] = {"hello", "world"}; 882 const list<std::string> strings(a, a + 2); 883 EXPECT_EQ("{ \"hello\", \"world\" }", Print(strings)); 884 } 885 886 TEST(PrintStlContainerTest, Map) { 887 map<int, bool> map1; 888 map1[1] = true; 889 map1[5] = false; 890 map1[3] = true; 891 EXPECT_EQ("{ (1, true), (3, true), (5, false) }", Print(map1)); 892 } 893 894 TEST(PrintStlContainerTest, MultiMap) { 895 multimap<bool, int> map1; 896 // The make_pair template function would deduce the type as 897 // pair<bool, int> here, and since the key part in a multimap has to 898 // be constant, without a templated ctor in the pair class (as in 899 // libCstd on Solaris), make_pair call would fail to compile as no 900 // implicit conversion is found. Thus explicit typename is used 901 // here instead. 902 map1.insert(pair<const bool, int>(true, 0)); 903 map1.insert(pair<const bool, int>(true, 1)); 904 map1.insert(pair<const bool, int>(false, 2)); 905 EXPECT_EQ("{ (false, 2), (true, 0), (true, 1) }", Print(map1)); 906 } 907 908 TEST(PrintStlContainerTest, Set) { 909 const unsigned int a[] = { 3, 0, 5 }; 910 set<unsigned int> set1(a, a + 3); 911 EXPECT_EQ("{ 0, 3, 5 }", Print(set1)); 912 } 913 914 TEST(PrintStlContainerTest, MultiSet) { 915 const int a[] = { 1, 1, 2, 5, 1 }; 916 multiset<int> set1(a, a + 5); 917 EXPECT_EQ("{ 1, 1, 1, 2, 5 }", Print(set1)); 918 } 919 920 #if GTEST_HAS_STD_FORWARD_LIST_ 921 922 TEST(PrintStlContainerTest, SinglyLinkedList) { 923 int a[] = { 9, 2, 8 }; 924 const std::forward_list<int> ints(a, a + 3); 925 EXPECT_EQ("{ 9, 2, 8 }", Print(ints)); 926 } 927 #endif // GTEST_HAS_STD_FORWARD_LIST_ 928 929 TEST(PrintStlContainerTest, Pair) { 930 pair<const bool, int> p(true, 5); 931 EXPECT_EQ("(true, 5)", Print(p)); 932 } 933 934 TEST(PrintStlContainerTest, Vector) { 935 vector<int> v; 936 v.push_back(1); 937 v.push_back(2); 938 EXPECT_EQ("{ 1, 2 }", Print(v)); 939 } 940 941 TEST(PrintStlContainerTest, LongSequence) { 942 const int a[100] = { 1, 2, 3 }; 943 const vector<int> v(a, a + 100); 944 EXPECT_EQ("{ 1, 2, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, " 945 "0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ... }", Print(v)); 946 } 947 948 TEST(PrintStlContainerTest, NestedContainer) { 949 const int a1[] = { 1, 2 }; 950 const int a2[] = { 3, 4, 5 }; 951 const list<int> l1(a1, a1 + 2); 952 const list<int> l2(a2, a2 + 3); 953 954 vector<list<int> > v; 955 v.push_back(l1); 956 v.push_back(l2); 957 EXPECT_EQ("{ { 1, 2 }, { 3, 4, 5 } }", Print(v)); 958 } 959 960 TEST(PrintStlContainerTest, OneDimensionalNativeArray) { 961 const int a[3] = { 1, 2, 3 }; 962 NativeArray<int> b(a, 3, RelationToSourceReference()); 963 EXPECT_EQ("{ 1, 2, 3 }", Print(b)); 964 } 965 966 TEST(PrintStlContainerTest, TwoDimensionalNativeArray) { 967 const int a[2][3] = { { 1, 2, 3 }, { 4, 5, 6 } }; 968 NativeArray<int[3]> b(a, 2, RelationToSourceReference()); 969 EXPECT_EQ("{ { 1, 2, 3 }, { 4, 5, 6 } }", Print(b)); 970 } 971 972 // Tests that a class named iterator isn't treated as a container. 973 974 struct iterator { 975 char x; 976 }; 977 978 TEST(PrintStlContainerTest, Iterator) { 979 iterator it = {}; 980 EXPECT_EQ("1-byte object <00>", Print(it)); 981 } 982 983 // Tests that a class named const_iterator isn't treated as a container. 984 985 struct const_iterator { 986 char x; 987 }; 988 989 TEST(PrintStlContainerTest, ConstIterator) { 990 const_iterator it = {}; 991 EXPECT_EQ("1-byte object <00>", Print(it)); 992 } 993 994 #if GTEST_HAS_TR1_TUPLE 995 // Tests printing ::std::tr1::tuples. 996 997 // Tuples of various arities. 998 TEST(PrintTr1TupleTest, VariousSizes) { 999 ::std::tr1::tuple<> t0; 1000 EXPECT_EQ("()", Print(t0)); 1001 1002 ::std::tr1::tuple<int> t1(5); 1003 EXPECT_EQ("(5)", Print(t1)); 1004 1005 ::std::tr1::tuple<char, bool> t2('a', true); 1006 EXPECT_EQ("('a' (97, 0x61), true)", Print(t2)); 1007 1008 ::std::tr1::tuple<bool, int, int> t3(false, 2, 3); 1009 EXPECT_EQ("(false, 2, 3)", Print(t3)); 1010 1011 ::std::tr1::tuple<bool, int, int, int> t4(false, 2, 3, 4); 1012 EXPECT_EQ("(false, 2, 3, 4)", Print(t4)); 1013 1014 ::std::tr1::tuple<bool, int, int, int, bool> t5(false, 2, 3, 4, true); 1015 EXPECT_EQ("(false, 2, 3, 4, true)", Print(t5)); 1016 1017 ::std::tr1::tuple<bool, int, int, int, bool, int> t6(false, 2, 3, 4, true, 6); 1018 EXPECT_EQ("(false, 2, 3, 4, true, 6)", Print(t6)); 1019 1020 ::std::tr1::tuple<bool, int, int, int, bool, int, int> t7( 1021 false, 2, 3, 4, true, 6, 7); 1022 EXPECT_EQ("(false, 2, 3, 4, true, 6, 7)", Print(t7)); 1023 1024 ::std::tr1::tuple<bool, int, int, int, bool, int, int, bool> t8( 1025 false, 2, 3, 4, true, 6, 7, true); 1026 EXPECT_EQ("(false, 2, 3, 4, true, 6, 7, true)", Print(t8)); 1027 1028 ::std::tr1::tuple<bool, int, int, int, bool, int, int, bool, int> t9( 1029 false, 2, 3, 4, true, 6, 7, true, 9); 1030 EXPECT_EQ("(false, 2, 3, 4, true, 6, 7, true, 9)", Print(t9)); 1031 1032 const char* const str = "8"; 1033 // VC++ 2010's implementation of tuple of C++0x is deficient, requiring 1034 // an explicit type cast of NULL to be used. 1035 ::std::tr1::tuple<bool, char, short, testing::internal::Int32, // NOLINT 1036 testing::internal::Int64, float, double, const char*, void*, 1037 std::string> 1038 t10(false, 'a', static_cast<short>(3), 4, 5, 1.5F, -2.5, str, // NOLINT 1039 ImplicitCast_<void*>(NULL), "10"); 1040 EXPECT_EQ("(false, 'a' (97, 0x61), 3, 4, 5, 1.5, -2.5, " + PrintPointer(str) + 1041 " pointing to \"8\", NULL, \"10\")", 1042 Print(t10)); 1043 } 1044 1045 // Nested tuples. 1046 TEST(PrintTr1TupleTest, NestedTuple) { 1047 ::std::tr1::tuple< ::std::tr1::tuple<int, bool>, char> nested( 1048 ::std::tr1::make_tuple(5, true), 'a'); 1049 EXPECT_EQ("((5, true), 'a' (97, 0x61))", Print(nested)); 1050 } 1051 1052 #endif // GTEST_HAS_TR1_TUPLE 1053 1054 #if GTEST_HAS_STD_TUPLE_ 1055 // Tests printing ::std::tuples. 1056 1057 // Tuples of various arities. 1058 TEST(PrintStdTupleTest, VariousSizes) { 1059 ::std::tuple<> t0; 1060 EXPECT_EQ("()", Print(t0)); 1061 1062 ::std::tuple<int> t1(5); 1063 EXPECT_EQ("(5)", Print(t1)); 1064 1065 ::std::tuple<char, bool> t2('a', true); 1066 EXPECT_EQ("('a' (97, 0x61), true)", Print(t2)); 1067 1068 ::std::tuple<bool, int, int> t3(false, 2, 3); 1069 EXPECT_EQ("(false, 2, 3)", Print(t3)); 1070 1071 ::std::tuple<bool, int, int, int> t4(false, 2, 3, 4); 1072 EXPECT_EQ("(false, 2, 3, 4)", Print(t4)); 1073 1074 ::std::tuple<bool, int, int, int, bool> t5(false, 2, 3, 4, true); 1075 EXPECT_EQ("(false, 2, 3, 4, true)", Print(t5)); 1076 1077 ::std::tuple<bool, int, int, int, bool, int> t6(false, 2, 3, 4, true, 6); 1078 EXPECT_EQ("(false, 2, 3, 4, true, 6)", Print(t6)); 1079 1080 ::std::tuple<bool, int, int, int, bool, int, int> t7( 1081 false, 2, 3, 4, true, 6, 7); 1082 EXPECT_EQ("(false, 2, 3, 4, true, 6, 7)", Print(t7)); 1083 1084 ::std::tuple<bool, int, int, int, bool, int, int, bool> t8( 1085 false, 2, 3, 4, true, 6, 7, true); 1086 EXPECT_EQ("(false, 2, 3, 4, true, 6, 7, true)", Print(t8)); 1087 1088 ::std::tuple<bool, int, int, int, bool, int, int, bool, int> t9( 1089 false, 2, 3, 4, true, 6, 7, true, 9); 1090 EXPECT_EQ("(false, 2, 3, 4, true, 6, 7, true, 9)", Print(t9)); 1091 1092 const char* const str = "8"; 1093 // VC++ 2010's implementation of tuple of C++0x is deficient, requiring 1094 // an explicit type cast of NULL to be used. 1095 ::std::tuple<bool, char, short, testing::internal::Int32, // NOLINT 1096 testing::internal::Int64, float, double, const char*, void*, 1097 std::string> 1098 t10(false, 'a', static_cast<short>(3), 4, 5, 1.5F, -2.5, str, // NOLINT 1099 ImplicitCast_<void*>(NULL), "10"); 1100 EXPECT_EQ("(false, 'a' (97, 0x61), 3, 4, 5, 1.5, -2.5, " + PrintPointer(str) + 1101 " pointing to \"8\", NULL, \"10\")", 1102 Print(t10)); 1103 } 1104 1105 // Nested tuples. 1106 TEST(PrintStdTupleTest, NestedTuple) { 1107 ::std::tuple< ::std::tuple<int, bool>, char> nested( 1108 ::std::make_tuple(5, true), 'a'); 1109 EXPECT_EQ("((5, true), 'a' (97, 0x61))", Print(nested)); 1110 } 1111 1112 #endif // GTEST_LANG_CXX11 1113 1114 #if GTEST_LANG_CXX11 1115 TEST(PrintNullptrT, Basic) { 1116 EXPECT_EQ("(nullptr)", Print(nullptr)); 1117 } 1118 #endif // GTEST_LANG_CXX11 1119 1120 // Tests printing user-defined unprintable types. 1121 1122 // Unprintable types in the global namespace. 1123 TEST(PrintUnprintableTypeTest, InGlobalNamespace) { 1124 EXPECT_EQ("1-byte object <00>", 1125 Print(UnprintableTemplateInGlobal<char>())); 1126 } 1127 1128 // Unprintable types in a user namespace. 1129 TEST(PrintUnprintableTypeTest, InUserNamespace) { 1130 EXPECT_EQ("16-byte object <EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>", 1131 Print(::foo::UnprintableInFoo())); 1132 } 1133 1134 // Unprintable types are that too big to be printed completely. 1135 1136 struct Big { 1137 Big() { memset(array, 0, sizeof(array)); } 1138 char array[257]; 1139 }; 1140 1141 TEST(PrintUnpritableTypeTest, BigObject) { 1142 EXPECT_EQ("257-byte object <00-00 00-00 00-00 00-00 00-00 00-00 " 1143 "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 " 1144 "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 " 1145 "00-00 00-00 00-00 00-00 00-00 00-00 ... 00-00 00-00 00-00 " 1146 "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 " 1147 "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 " 1148 "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00>", 1149 Print(Big())); 1150 } 1151 1152 // Tests printing user-defined streamable types. 1153 1154 // Streamable types in the global namespace. 1155 TEST(PrintStreamableTypeTest, InGlobalNamespace) { 1156 StreamableInGlobal x; 1157 EXPECT_EQ("StreamableInGlobal", Print(x)); 1158 EXPECT_EQ("StreamableInGlobal*", Print(&x)); 1159 } 1160 1161 // Printable template types in a user namespace. 1162 TEST(PrintStreamableTypeTest, TemplateTypeInUserNamespace) { 1163 EXPECT_EQ("StreamableTemplateInFoo: 0", 1164 Print(::foo::StreamableTemplateInFoo<int>())); 1165 } 1166 1167 // Tests printing a user-defined recursive container type that has a << 1168 // operator. 1169 TEST(PrintStreamableTypeTest, PathLikeInUserNamespace) { 1170 ::foo::PathLike x; 1171 EXPECT_EQ("Streamable-PathLike", Print(x)); 1172 const ::foo::PathLike cx; 1173 EXPECT_EQ("Streamable-PathLike", Print(cx)); 1174 } 1175 1176 // Tests printing user-defined types that have a PrintTo() function. 1177 TEST(PrintPrintableTypeTest, InUserNamespace) { 1178 EXPECT_EQ("PrintableViaPrintTo: 0", 1179 Print(::foo::PrintableViaPrintTo())); 1180 } 1181 1182 // Tests printing a pointer to a user-defined type that has a << 1183 // operator for its pointer. 1184 TEST(PrintPrintableTypeTest, PointerInUserNamespace) { 1185 ::foo::PointerPrintable x; 1186 EXPECT_EQ("PointerPrintable*", Print(&x)); 1187 } 1188 1189 // Tests printing user-defined class template that have a PrintTo() function. 1190 TEST(PrintPrintableTypeTest, TemplateInUserNamespace) { 1191 EXPECT_EQ("PrintableViaPrintToTemplate: 5", 1192 Print(::foo::PrintableViaPrintToTemplate<int>(5))); 1193 } 1194 1195 // Tests that the universal printer prints both the address and the 1196 // value of a reference. 1197 TEST(PrintReferenceTest, PrintsAddressAndValue) { 1198 int n = 5; 1199 EXPECT_EQ("@" + PrintPointer(&n) + " 5", PrintByRef(n)); 1200 1201 int a[2][3] = { 1202 { 0, 1, 2 }, 1203 { 3, 4, 5 } 1204 }; 1205 EXPECT_EQ("@" + PrintPointer(a) + " { { 0, 1, 2 }, { 3, 4, 5 } }", 1206 PrintByRef(a)); 1207 1208 const ::foo::UnprintableInFoo x; 1209 EXPECT_EQ("@" + PrintPointer(&x) + " 16-byte object " 1210 "<EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>", 1211 PrintByRef(x)); 1212 } 1213 1214 // Tests that the universal printer prints a function pointer passed by 1215 // reference. 1216 TEST(PrintReferenceTest, HandlesFunctionPointer) { 1217 void (*fp)(int n) = &MyFunction; 1218 const std::string fp_pointer_string = 1219 PrintPointer(reinterpret_cast<const void*>(&fp)); 1220 // We cannot directly cast &MyFunction to const void* because the 1221 // standard disallows casting between pointers to functions and 1222 // pointers to objects, and some compilers (e.g. GCC 3.4) enforce 1223 // this limitation. 1224 const std::string fp_string = PrintPointer(reinterpret_cast<const void*>( 1225 reinterpret_cast<internal::BiggestInt>(fp))); 1226 EXPECT_EQ("@" + fp_pointer_string + " " + fp_string, 1227 PrintByRef(fp)); 1228 } 1229 1230 // Tests that the universal printer prints a member function pointer 1231 // passed by reference. 1232 TEST(PrintReferenceTest, HandlesMemberFunctionPointer) { 1233 int (Foo::*p)(char ch) = &Foo::MyMethod; 1234 EXPECT_TRUE(HasPrefix( 1235 PrintByRef(p), 1236 "@" + PrintPointer(reinterpret_cast<const void*>(&p)) + " " + 1237 Print(sizeof(p)) + "-byte object ")); 1238 1239 char (Foo::*p2)(int n) = &Foo::MyVirtualMethod; 1240 EXPECT_TRUE(HasPrefix( 1241 PrintByRef(p2), 1242 "@" + PrintPointer(reinterpret_cast<const void*>(&p2)) + " " + 1243 Print(sizeof(p2)) + "-byte object ")); 1244 } 1245 1246 // Tests that the universal printer prints a member variable pointer 1247 // passed by reference. 1248 TEST(PrintReferenceTest, HandlesMemberVariablePointer) { 1249 int Foo::*p = &Foo::value; // NOLINT 1250 EXPECT_TRUE(HasPrefix( 1251 PrintByRef(p), 1252 "@" + PrintPointer(&p) + " " + Print(sizeof(p)) + "-byte object ")); 1253 } 1254 1255 // Tests that FormatForComparisonFailureMessage(), which is used to print 1256 // an operand in a comparison assertion (e.g. ASSERT_EQ) when the assertion 1257 // fails, formats the operand in the desired way. 1258 1259 // scalar 1260 TEST(FormatForComparisonFailureMessageTest, WorksForScalar) { 1261 EXPECT_STREQ("123", 1262 FormatForComparisonFailureMessage(123, 124).c_str()); 1263 } 1264 1265 // non-char pointer 1266 TEST(FormatForComparisonFailureMessageTest, WorksForNonCharPointer) { 1267 int n = 0; 1268 EXPECT_EQ(PrintPointer(&n), 1269 FormatForComparisonFailureMessage(&n, &n).c_str()); 1270 } 1271 1272 // non-char array 1273 TEST(FormatForComparisonFailureMessageTest, FormatsNonCharArrayAsPointer) { 1274 // In expression 'array == x', 'array' is compared by pointer. 1275 // Therefore we want to print an array operand as a pointer. 1276 int n[] = { 1, 2, 3 }; 1277 EXPECT_EQ(PrintPointer(n), 1278 FormatForComparisonFailureMessage(n, n).c_str()); 1279 } 1280 1281 // Tests formatting a char pointer when it's compared with another pointer. 1282 // In this case we want to print it as a raw pointer, as the comparison is by 1283 // pointer. 1284 1285 // char pointer vs pointer 1286 TEST(FormatForComparisonFailureMessageTest, WorksForCharPointerVsPointer) { 1287 // In expression 'p == x', where 'p' and 'x' are (const or not) char 1288 // pointers, the operands are compared by pointer. Therefore we 1289 // want to print 'p' as a pointer instead of a C string (we don't 1290 // even know if it's supposed to point to a valid C string). 1291 1292 // const char* 1293 const char* s = "hello"; 1294 EXPECT_EQ(PrintPointer(s), 1295 FormatForComparisonFailureMessage(s, s).c_str()); 1296 1297 // char* 1298 char ch = 'a'; 1299 EXPECT_EQ(PrintPointer(&ch), 1300 FormatForComparisonFailureMessage(&ch, &ch).c_str()); 1301 } 1302 1303 // wchar_t pointer vs pointer 1304 TEST(FormatForComparisonFailureMessageTest, WorksForWCharPointerVsPointer) { 1305 // In expression 'p == x', where 'p' and 'x' are (const or not) char 1306 // pointers, the operands are compared by pointer. Therefore we 1307 // want to print 'p' as a pointer instead of a wide C string (we don't 1308 // even know if it's supposed to point to a valid wide C string). 1309 1310 // const wchar_t* 1311 const wchar_t* s = L"hello"; 1312 EXPECT_EQ(PrintPointer(s), 1313 FormatForComparisonFailureMessage(s, s).c_str()); 1314 1315 // wchar_t* 1316 wchar_t ch = L'a'; 1317 EXPECT_EQ(PrintPointer(&ch), 1318 FormatForComparisonFailureMessage(&ch, &ch).c_str()); 1319 } 1320 1321 // Tests formatting a char pointer when it's compared to a string object. 1322 // In this case we want to print the char pointer as a C string. 1323 1324 #if GTEST_HAS_GLOBAL_STRING 1325 // char pointer vs ::string 1326 TEST(FormatForComparisonFailureMessageTest, WorksForCharPointerVsString) { 1327 const char* s = "hello \"world"; 1328 EXPECT_STREQ("\"hello \\\"world\"", // The string content should be escaped. 1329 FormatForComparisonFailureMessage(s, ::string()).c_str()); 1330 1331 // char* 1332 char str[] = "hi\1"; 1333 char* p = str; 1334 EXPECT_STREQ("\"hi\\x1\"", // The string content should be escaped. 1335 FormatForComparisonFailureMessage(p, ::string()).c_str()); 1336 } 1337 #endif 1338 1339 // char pointer vs std::string 1340 TEST(FormatForComparisonFailureMessageTest, WorksForCharPointerVsStdString) { 1341 const char* s = "hello \"world"; 1342 EXPECT_STREQ("\"hello \\\"world\"", // The string content should be escaped. 1343 FormatForComparisonFailureMessage(s, ::std::string()).c_str()); 1344 1345 // char* 1346 char str[] = "hi\1"; 1347 char* p = str; 1348 EXPECT_STREQ("\"hi\\x1\"", // The string content should be escaped. 1349 FormatForComparisonFailureMessage(p, ::std::string()).c_str()); 1350 } 1351 1352 #if GTEST_HAS_GLOBAL_WSTRING 1353 // wchar_t pointer vs ::wstring 1354 TEST(FormatForComparisonFailureMessageTest, WorksForWCharPointerVsWString) { 1355 const wchar_t* s = L"hi \"world"; 1356 EXPECT_STREQ("L\"hi \\\"world\"", // The string content should be escaped. 1357 FormatForComparisonFailureMessage(s, ::wstring()).c_str()); 1358 1359 // wchar_t* 1360 wchar_t str[] = L"hi\1"; 1361 wchar_t* p = str; 1362 EXPECT_STREQ("L\"hi\\x1\"", // The string content should be escaped. 1363 FormatForComparisonFailureMessage(p, ::wstring()).c_str()); 1364 } 1365 #endif 1366 1367 #if GTEST_HAS_STD_WSTRING 1368 // wchar_t pointer vs std::wstring 1369 TEST(FormatForComparisonFailureMessageTest, WorksForWCharPointerVsStdWString) { 1370 const wchar_t* s = L"hi \"world"; 1371 EXPECT_STREQ("L\"hi \\\"world\"", // The string content should be escaped. 1372 FormatForComparisonFailureMessage(s, ::std::wstring()).c_str()); 1373 1374 // wchar_t* 1375 wchar_t str[] = L"hi\1"; 1376 wchar_t* p = str; 1377 EXPECT_STREQ("L\"hi\\x1\"", // The string content should be escaped. 1378 FormatForComparisonFailureMessage(p, ::std::wstring()).c_str()); 1379 } 1380 #endif 1381 1382 // Tests formatting a char array when it's compared with a pointer or array. 1383 // In this case we want to print the array as a row pointer, as the comparison 1384 // is by pointer. 1385 1386 // char array vs pointer 1387 TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsPointer) { 1388 char str[] = "hi \"world\""; 1389 char* p = NULL; 1390 EXPECT_EQ(PrintPointer(str), 1391 FormatForComparisonFailureMessage(str, p).c_str()); 1392 } 1393 1394 // char array vs char array 1395 TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsCharArray) { 1396 const char str[] = "hi \"world\""; 1397 EXPECT_EQ(PrintPointer(str), 1398 FormatForComparisonFailureMessage(str, str).c_str()); 1399 } 1400 1401 // wchar_t array vs pointer 1402 TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsPointer) { 1403 wchar_t str[] = L"hi \"world\""; 1404 wchar_t* p = NULL; 1405 EXPECT_EQ(PrintPointer(str), 1406 FormatForComparisonFailureMessage(str, p).c_str()); 1407 } 1408 1409 // wchar_t array vs wchar_t array 1410 TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsWCharArray) { 1411 const wchar_t str[] = L"hi \"world\""; 1412 EXPECT_EQ(PrintPointer(str), 1413 FormatForComparisonFailureMessage(str, str).c_str()); 1414 } 1415 1416 // Tests formatting a char array when it's compared with a string object. 1417 // In this case we want to print the array as a C string. 1418 1419 #if GTEST_HAS_GLOBAL_STRING 1420 // char array vs string 1421 TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsString) { 1422 const char str[] = "hi \"w\0rld\""; 1423 EXPECT_STREQ("\"hi \\\"w\"", // The content should be escaped. 1424 // Embedded NUL terminates the string. 1425 FormatForComparisonFailureMessage(str, ::string()).c_str()); 1426 } 1427 #endif 1428 1429 // char array vs std::string 1430 TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsStdString) { 1431 const char str[] = "hi \"world\""; 1432 EXPECT_STREQ("\"hi \\\"world\\\"\"", // The content should be escaped. 1433 FormatForComparisonFailureMessage(str, ::std::string()).c_str()); 1434 } 1435 1436 #if GTEST_HAS_GLOBAL_WSTRING 1437 // wchar_t array vs wstring 1438 TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsWString) { 1439 const wchar_t str[] = L"hi \"world\""; 1440 EXPECT_STREQ("L\"hi \\\"world\\\"\"", // The content should be escaped. 1441 FormatForComparisonFailureMessage(str, ::wstring()).c_str()); 1442 } 1443 #endif 1444 1445 #if GTEST_HAS_STD_WSTRING 1446 // wchar_t array vs std::wstring 1447 TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsStdWString) { 1448 const wchar_t str[] = L"hi \"w\0rld\""; 1449 EXPECT_STREQ( 1450 "L\"hi \\\"w\"", // The content should be escaped. 1451 // Embedded NUL terminates the string. 1452 FormatForComparisonFailureMessage(str, ::std::wstring()).c_str()); 1453 } 1454 #endif 1455 1456 // Useful for testing PrintToString(). We cannot use EXPECT_EQ() 1457 // there as its implementation uses PrintToString(). The caller must 1458 // ensure that 'value' has no side effect. 1459 #define EXPECT_PRINT_TO_STRING_(value, expected_string) \ 1460 EXPECT_TRUE(PrintToString(value) == (expected_string)) \ 1461 << " where " #value " prints as " << (PrintToString(value)) 1462 1463 TEST(PrintToStringTest, WorksForScalar) { 1464 EXPECT_PRINT_TO_STRING_(123, "123"); 1465 } 1466 1467 TEST(PrintToStringTest, WorksForPointerToConstChar) { 1468 const char* p = "hello"; 1469 EXPECT_PRINT_TO_STRING_(p, "\"hello\""); 1470 } 1471 1472 TEST(PrintToStringTest, WorksForPointerToNonConstChar) { 1473 char s[] = "hello"; 1474 char* p = s; 1475 EXPECT_PRINT_TO_STRING_(p, "\"hello\""); 1476 } 1477 1478 TEST(PrintToStringTest, EscapesForPointerToConstChar) { 1479 const char* p = "hello\n"; 1480 EXPECT_PRINT_TO_STRING_(p, "\"hello\\n\""); 1481 } 1482 1483 TEST(PrintToStringTest, EscapesForPointerToNonConstChar) { 1484 char s[] = "hello\1"; 1485 char* p = s; 1486 EXPECT_PRINT_TO_STRING_(p, "\"hello\\x1\""); 1487 } 1488 1489 TEST(PrintToStringTest, WorksForArray) { 1490 int n[3] = { 1, 2, 3 }; 1491 EXPECT_PRINT_TO_STRING_(n, "{ 1, 2, 3 }"); 1492 } 1493 1494 TEST(PrintToStringTest, WorksForCharArray) { 1495 char s[] = "hello"; 1496 EXPECT_PRINT_TO_STRING_(s, "\"hello\""); 1497 } 1498 1499 TEST(PrintToStringTest, WorksForCharArrayWithEmbeddedNul) { 1500 const char str_with_nul[] = "hello\0 world"; 1501 EXPECT_PRINT_TO_STRING_(str_with_nul, "\"hello\\0 world\""); 1502 1503 char mutable_str_with_nul[] = "hello\0 world"; 1504 EXPECT_PRINT_TO_STRING_(mutable_str_with_nul, "\"hello\\0 world\""); 1505 } 1506 1507 TEST(PrintToStringTest, ContainsNonLatin) { 1508 // Sanity test with valid UTF-8. Prints both in hex and as text. 1509 std::string non_ascii_str = ::std::string("오전 4:30"); 1510 EXPECT_PRINT_TO_STRING_(non_ascii_str, 1511 "\"\\xEC\\x98\\xA4\\xEC\\xA0\\x84 4:30\"\n" 1512 " As Text: \"오전 4:30\""); 1513 non_ascii_str = ::std::string("From ä — ẑ"); 1514 EXPECT_PRINT_TO_STRING_(non_ascii_str, 1515 "\"From \\xC3\\xA4 \\xE2\\x80\\x94 \\xE1\\xBA\\x91\"" 1516 "\n As Text: \"From ä — ẑ\""); 1517 } 1518 1519 TEST(IsValidUTF8Test, IllFormedUTF8) { 1520 // The following test strings are ill-formed UTF-8 and are printed 1521 // as hex only (or ASCII, in case of ASCII bytes) because IsValidUTF8() is 1522 // expected to fail, thus output does not contain "As Text:". 1523 1524 static const char *const kTestdata[][2] = { 1525 // 2-byte lead byte followed by a single-byte character. 1526 {"\xC3\x74", "\"\\xC3t\""}, 1527 // Valid 2-byte character followed by an orphan trail byte. 1528 {"\xC3\x84\xA4", "\"\\xC3\\x84\\xA4\""}, 1529 // Lead byte without trail byte. 1530 {"abc\xC3", "\"abc\\xC3\""}, 1531 // 3-byte lead byte, single-byte character, orphan trail byte. 1532 {"x\xE2\x70\x94", "\"x\\xE2p\\x94\""}, 1533 // Truncated 3-byte character. 1534 {"\xE2\x80", "\"\\xE2\\x80\""}, 1535 // Truncated 3-byte character followed by valid 2-byte char. 1536 {"\xE2\x80\xC3\x84", "\"\\xE2\\x80\\xC3\\x84\""}, 1537 // Truncated 3-byte character followed by a single-byte character. 1538 {"\xE2\x80\x7A", "\"\\xE2\\x80z\""}, 1539 // 3-byte lead byte followed by valid 3-byte character. 1540 {"\xE2\xE2\x80\x94", "\"\\xE2\\xE2\\x80\\x94\""}, 1541 // 4-byte lead byte followed by valid 3-byte character. 1542 {"\xF0\xE2\x80\x94", "\"\\xF0\\xE2\\x80\\x94\""}, 1543 // Truncated 4-byte character. 1544 {"\xF0\xE2\x80", "\"\\xF0\\xE2\\x80\""}, 1545 // Invalid UTF-8 byte sequences embedded in other chars. 1546 {"abc\xE2\x80\x94\xC3\x74xyc", "\"abc\\xE2\\x80\\x94\\xC3txyc\""}, 1547 {"abc\xC3\x84\xE2\x80\xC3\x84xyz", 1548 "\"abc\\xC3\\x84\\xE2\\x80\\xC3\\x84xyz\""}, 1549 // Non-shortest UTF-8 byte sequences are also ill-formed. 1550 // The classics: xC0, xC1 lead byte. 1551 {"\xC0\x80", "\"\\xC0\\x80\""}, 1552 {"\xC1\x81", "\"\\xC1\\x81\""}, 1553 // Non-shortest sequences. 1554 {"\xE0\x80\x80", "\"\\xE0\\x80\\x80\""}, 1555 {"\xf0\x80\x80\x80", "\"\\xF0\\x80\\x80\\x80\""}, 1556 // Last valid code point before surrogate range, should be printed as text, 1557 // too. 1558 {"\xED\x9F\xBF", "\"\\xED\\x9F\\xBF\"\n As Text: \"\""}, 1559 // Start of surrogate lead. Surrogates are not printed as text. 1560 {"\xED\xA0\x80", "\"\\xED\\xA0\\x80\""}, 1561 // Last non-private surrogate lead. 1562 {"\xED\xAD\xBF", "\"\\xED\\xAD\\xBF\""}, 1563 // First private-use surrogate lead. 1564 {"\xED\xAE\x80", "\"\\xED\\xAE\\x80\""}, 1565 // Last private-use surrogate lead. 1566 {"\xED\xAF\xBF", "\"\\xED\\xAF\\xBF\""}, 1567 // Mid-point of surrogate trail. 1568 {"\xED\xB3\xBF", "\"\\xED\\xB3\\xBF\""}, 1569 // First valid code point after surrogate range, should be printed as text, 1570 // too. 1571 {"\xEE\x80\x80", "\"\\xEE\\x80\\x80\"\n As Text: \"\""} 1572 }; 1573 1574 for (int i = 0; i < int(sizeof(kTestdata)/sizeof(kTestdata[0])); ++i) { 1575 EXPECT_PRINT_TO_STRING_(kTestdata[i][0], kTestdata[i][1]); 1576 } 1577 } 1578 1579 #undef EXPECT_PRINT_TO_STRING_ 1580 1581 TEST(UniversalTersePrintTest, WorksForNonReference) { 1582 ::std::stringstream ss; 1583 UniversalTersePrint(123, &ss); 1584 EXPECT_EQ("123", ss.str()); 1585 } 1586 1587 TEST(UniversalTersePrintTest, WorksForReference) { 1588 const int& n = 123; 1589 ::std::stringstream ss; 1590 UniversalTersePrint(n, &ss); 1591 EXPECT_EQ("123", ss.str()); 1592 } 1593 1594 TEST(UniversalTersePrintTest, WorksForCString) { 1595 const char* s1 = "abc"; 1596 ::std::stringstream ss1; 1597 UniversalTersePrint(s1, &ss1); 1598 EXPECT_EQ("\"abc\"", ss1.str()); 1599 1600 char* s2 = const_cast<char*>(s1); 1601 ::std::stringstream ss2; 1602 UniversalTersePrint(s2, &ss2); 1603 EXPECT_EQ("\"abc\"", ss2.str()); 1604 1605 const char* s3 = NULL; 1606 ::std::stringstream ss3; 1607 UniversalTersePrint(s3, &ss3); 1608 EXPECT_EQ("NULL", ss3.str()); 1609 } 1610 1611 TEST(UniversalPrintTest, WorksForNonReference) { 1612 ::std::stringstream ss; 1613 UniversalPrint(123, &ss); 1614 EXPECT_EQ("123", ss.str()); 1615 } 1616 1617 TEST(UniversalPrintTest, WorksForReference) { 1618 const int& n = 123; 1619 ::std::stringstream ss; 1620 UniversalPrint(n, &ss); 1621 EXPECT_EQ("123", ss.str()); 1622 } 1623 1624 TEST(UniversalPrintTest, WorksForCString) { 1625 const char* s1 = "abc"; 1626 ::std::stringstream ss1; 1627 UniversalPrint(s1, &ss1); 1628 EXPECT_EQ(PrintPointer(s1) + " pointing to \"abc\"", std::string(ss1.str())); 1629 1630 char* s2 = const_cast<char*>(s1); 1631 ::std::stringstream ss2; 1632 UniversalPrint(s2, &ss2); 1633 EXPECT_EQ(PrintPointer(s2) + " pointing to \"abc\"", std::string(ss2.str())); 1634 1635 const char* s3 = NULL; 1636 ::std::stringstream ss3; 1637 UniversalPrint(s3, &ss3); 1638 EXPECT_EQ("NULL", ss3.str()); 1639 } 1640 1641 TEST(UniversalPrintTest, WorksForCharArray) { 1642 const char str[] = "\"Line\0 1\"\nLine 2"; 1643 ::std::stringstream ss1; 1644 UniversalPrint(str, &ss1); 1645 EXPECT_EQ("\"\\\"Line\\0 1\\\"\\nLine 2\"", ss1.str()); 1646 1647 const char mutable_str[] = "\"Line\0 1\"\nLine 2"; 1648 ::std::stringstream ss2; 1649 UniversalPrint(mutable_str, &ss2); 1650 EXPECT_EQ("\"\\\"Line\\0 1\\\"\\nLine 2\"", ss2.str()); 1651 } 1652 1653 #if GTEST_HAS_TR1_TUPLE 1654 1655 TEST(UniversalTersePrintTupleFieldsToStringsTestWithTr1, PrintsEmptyTuple) { 1656 Strings result = UniversalTersePrintTupleFieldsToStrings( 1657 ::std::tr1::make_tuple()); 1658 EXPECT_EQ(0u, result.size()); 1659 } 1660 1661 TEST(UniversalTersePrintTupleFieldsToStringsTestWithTr1, PrintsOneTuple) { 1662 Strings result = UniversalTersePrintTupleFieldsToStrings( 1663 ::std::tr1::make_tuple(1)); 1664 ASSERT_EQ(1u, result.size()); 1665 EXPECT_EQ("1", result[0]); 1666 } 1667 1668 TEST(UniversalTersePrintTupleFieldsToStringsTestWithTr1, PrintsTwoTuple) { 1669 Strings result = UniversalTersePrintTupleFieldsToStrings( 1670 ::std::tr1::make_tuple(1, 'a')); 1671 ASSERT_EQ(2u, result.size()); 1672 EXPECT_EQ("1", result[0]); 1673 EXPECT_EQ("'a' (97, 0x61)", result[1]); 1674 } 1675 1676 TEST(UniversalTersePrintTupleFieldsToStringsTestWithTr1, PrintsTersely) { 1677 const int n = 1; 1678 Strings result = UniversalTersePrintTupleFieldsToStrings( 1679 ::std::tr1::tuple<const int&, const char*>(n, "a")); 1680 ASSERT_EQ(2u, result.size()); 1681 EXPECT_EQ("1", result[0]); 1682 EXPECT_EQ("\"a\"", result[1]); 1683 } 1684 1685 #endif // GTEST_HAS_TR1_TUPLE 1686 1687 #if GTEST_HAS_STD_TUPLE_ 1688 1689 TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsEmptyTuple) { 1690 Strings result = UniversalTersePrintTupleFieldsToStrings(::std::make_tuple()); 1691 EXPECT_EQ(0u, result.size()); 1692 } 1693 1694 TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsOneTuple) { 1695 Strings result = UniversalTersePrintTupleFieldsToStrings( 1696 ::std::make_tuple(1)); 1697 ASSERT_EQ(1u, result.size()); 1698 EXPECT_EQ("1", result[0]); 1699 } 1700 1701 TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsTwoTuple) { 1702 Strings result = UniversalTersePrintTupleFieldsToStrings( 1703 ::std::make_tuple(1, 'a')); 1704 ASSERT_EQ(2u, result.size()); 1705 EXPECT_EQ("1", result[0]); 1706 EXPECT_EQ("'a' (97, 0x61)", result[1]); 1707 } 1708 1709 TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsTersely) { 1710 const int n = 1; 1711 Strings result = UniversalTersePrintTupleFieldsToStrings( 1712 ::std::tuple<const int&, const char*>(n, "a")); 1713 ASSERT_EQ(2u, result.size()); 1714 EXPECT_EQ("1", result[0]); 1715 EXPECT_EQ("\"a\"", result[1]); 1716 } 1717 1718 #endif // GTEST_HAS_STD_TUPLE_ 1719 1720 #if GTEST_HAS_ABSL 1721 1722 TEST(PrintOptionalTest, Basic) { 1723 absl::optional<int> value; 1724 EXPECT_EQ("(nullopt)", PrintToString(value)); 1725 value = {7}; 1726 EXPECT_EQ("(7)", PrintToString(value)); 1727 EXPECT_EQ("(1.1)", PrintToString(absl::optional<double>{1.1})); 1728 EXPECT_EQ("(\"A\")", PrintToString(absl::optional<std::string>{"A"})); 1729 } 1730 1731 struct NonPrintable { 1732 unsigned char contents = 17; 1733 }; 1734 1735 TEST(PrintOneofTest, Basic) { 1736 using Type = absl::variant<int, StreamableInGlobal, NonPrintable>; 1737 EXPECT_EQ("('int' with value 7)", PrintToString(Type(7))); 1738 EXPECT_EQ("('StreamableInGlobal' with value StreamableInGlobal)", 1739 PrintToString(Type(StreamableInGlobal{}))); 1740 EXPECT_EQ( 1741 "('testing::gtest_printers_test::NonPrintable' with value 1-byte object " 1742 "<11>)", 1743 PrintToString(Type(NonPrintable{}))); 1744 } 1745 #endif // GTEST_HAS_ABSL 1746 1747 } // namespace gtest_printers_test 1748 } // namespace testing 1749