ceph/src/jaegertracing/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/googletest/googlemock/test/gmock-more-actions_test.cc

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  29
  30 // Google Mock - a framework for writing C++ mock classes.
  31 //
  32 // This file tests the built-in actions in gmock-actions.h.
  33
  34 #ifdef _MSC_VER
  35 #pragma warning(push)
  36 #pragma warning(disable : 4577)
  37 #endif
  38
  39 #include "gmock/gmock-more-actions.h"
  40
  41 #include <functional>
  42 #include <memory>
  43 #include <sstream>
  44 #include <string>
  45
  46 #include "gmock/gmock.h"
  47 #include "gtest/gtest-spi.h"
  48 #include "gtest/gtest.h"
  49
  50 namespace testing {
  51 namespace gmock_more_actions_test {
  52
  53 using ::std::plus;
  54 using ::std::string;
  55 using testing::Action;
  56 using testing::DeleteArg;
  57 using testing::Invoke;
  58 using testing::ReturnArg;
  59 using testing::ReturnPointee;
  60 using testing::SaveArg;
  61 using testing::SaveArgPointee;
  62 using testing::SetArgReferee;
  63 using testing::Unused;
  64 using testing::WithArg;
  65 using testing::WithoutArgs;
  66
  67 // For suppressing compiler warnings on conversion possibly losing precision.
  68 inline short Short(short n) { return n; }  // NOLINT
  69 inline char Char(char ch) { return ch; }
  70
  71 // Sample functions and functors for testing Invoke() and etc.
  72 int Nullary() { return 1; }
  73
  74 bool g_done = false;
  75
  76 bool Unary(int x) { return x < 0; }
  77
  78 bool ByConstRef(const std::string& s) { return s == "Hi"; }
  79
  80 const double g_double = 0;
  81 bool ReferencesGlobalDouble(const double& x) { return &x == &g_double; }
  82
  83 struct UnaryFunctor {
  84   int operator()(bool x) { return x ? 1 : -1; }
  85 };
  86
  87 const char* Binary(const char* input, short n) { return input + n; }  // NOLINT
  88
  89 int Ternary(int x, char y, short z) { return x + y + z; }  // NOLINT
  90
  91 int SumOf4(int a, int b, int c, int d) { return a + b + c + d; }
  92
  93 int SumOfFirst2(int a, int b, Unused, Unused) { return a + b; }
  94
  95 int SumOf5(int a, int b, int c, int d, int e) { return a + b + c + d + e; }
  96
  97 struct SumOf5Functor {
  98   int operator()(int a, int b, int c, int d, int e) {
  99     return a + b + c + d + e;
 100   }
 101 };
 102
 103 int SumOf6(int a, int b, int c, int d, int e, int f) {
 104   return a + b + c + d + e + f;
 105 }
 106
 107 struct SumOf6Functor {
 108   int operator()(int a, int b, int c, int d, int e, int f) {
 109     return a + b + c + d + e + f;
 110   }
 111 };
 112
 113 std::string Concat7(const char* s1, const char* s2, const char* s3,
 114                     const char* s4, const char* s5, const char* s6,
 115                     const char* s7) {
 116   return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7;
 117 }
 118
 119 std::string Concat8(const char* s1, const char* s2, const char* s3,
 120                     const char* s4, const char* s5, const char* s6,
 121                     const char* s7, const char* s8) {
 122   return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8;
 123 }
 124
 125 std::string Concat9(const char* s1, const char* s2, const char* s3,
 126                     const char* s4, const char* s5, const char* s6,
 127                     const char* s7, const char* s8, const char* s9) {
 128   return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9;
 129 }
 130
 131 std::string Concat10(const char* s1, const char* s2, const char* s3,
 132                      const char* s4, const char* s5, const char* s6,
 133                      const char* s7, const char* s8, const char* s9,
 134                      const char* s10) {
 135   return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9 + s10;
 136 }
 137
 138 class Foo {
 139  public:
 140   Foo() : value_(123) {}
 141
 142   int Nullary() const { return value_; }
 143
 144   short Unary(long x) { return static_cast<short>(value_ + x); }  // NOLINT
 145
 146   std::string Binary(const std::string& str, char c) const { return str + c; }
 147
 148   int Ternary(int x, bool y, char z) { return value_ + x + y*z; }
 149
 150   int SumOf4(int a, int b, int c, int d) const {
 151     return a + b + c + d + value_;
 152   }
 153
 154   int SumOfLast2(Unused, Unused, int a, int b) const { return a + b; }
 155
 156   int SumOf5(int a, int b, int c, int d, int e) { return a + b + c + d + e; }
 157
 158   int SumOf6(int a, int b, int c, int d, int e, int f) {
 159     return a + b + c + d + e + f;
 160   }
 161
 162   std::string Concat7(const char* s1, const char* s2, const char* s3,
 163                       const char* s4, const char* s5, const char* s6,
 164                       const char* s7) {
 165     return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7;
 166   }
 167
 168   std::string Concat8(const char* s1, const char* s2, const char* s3,
 169                       const char* s4, const char* s5, const char* s6,
 170                       const char* s7, const char* s8) {
 171     return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8;
 172   }
 173
 174   std::string Concat9(const char* s1, const char* s2, const char* s3,
 175                       const char* s4, const char* s5, const char* s6,
 176                       const char* s7, const char* s8, const char* s9) {
 177     return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9;
 178   }
 179
 180   std::string Concat10(const char* s1, const char* s2, const char* s3,
 181                        const char* s4, const char* s5, const char* s6,
 182                        const char* s7, const char* s8, const char* s9,
 183                        const char* s10) {
 184     return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9 + s10;
 185   }
 186
 187  private:
 188   int value_;
 189 };
 190
 191 // Tests using Invoke() with a nullary function.
 192 TEST(InvokeTest, Nullary) {
 193   Action<int()> a = Invoke(Nullary);  // NOLINT
 194   EXPECT_EQ(1, a.Perform(std::make_tuple()));
 195 }
 196
 197 // Tests using Invoke() with a unary function.
 198 TEST(InvokeTest, Unary) {
 199   Action<bool(int)> a = Invoke(Unary);  // NOLINT
 200   EXPECT_FALSE(a.Perform(std::make_tuple(1)));
 201   EXPECT_TRUE(a.Perform(std::make_tuple(-1)));
 202 }
 203
 204 // Tests using Invoke() with a binary function.
 205 TEST(InvokeTest, Binary) {
 206   Action<const char*(const char*, short)> a = Invoke(Binary);  // NOLINT
 207   const char* p = "Hello";
 208   EXPECT_EQ(p + 2, a.Perform(std::make_tuple(p, Short(2))));
 209 }
 210
 211 // Tests using Invoke() with a ternary function.
 212 TEST(InvokeTest, Ternary) {
 213   Action<int(int, char, short)> a = Invoke(Ternary);  // NOLINT
 214   EXPECT_EQ(6, a.Perform(std::make_tuple(1, '\2', Short(3))));
 215 }
 216
 217 // Tests using Invoke() with a 4-argument function.
 218 TEST(InvokeTest, FunctionThatTakes4Arguments) {
 219   Action<int(int, int, int, int)> a = Invoke(SumOf4);  // NOLINT
 220   EXPECT_EQ(1234, a.Perform(std::make_tuple(1000, 200, 30, 4)));
 221 }
 222
 223 // Tests using Invoke() with a 5-argument function.
 224 TEST(InvokeTest, FunctionThatTakes5Arguments) {
 225   Action<int(int, int, int, int, int)> a = Invoke(SumOf5);  // NOLINT
 226   EXPECT_EQ(12345, a.Perform(std::make_tuple(10000, 2000, 300, 40, 5)));
 227 }
 228
 229 // Tests using Invoke() with a 6-argument function.
 230 TEST(InvokeTest, FunctionThatTakes6Arguments) {
 231   Action<int(int, int, int, int, int, int)> a = Invoke(SumOf6);  // NOLINT
 232   EXPECT_EQ(123456,
 233             a.Perform(std::make_tuple(100000, 20000, 3000, 400, 50, 6)));
 234 }
 235
 236 // A helper that turns the type of a C-string literal from const
 237 // char[N] to const char*.
 238 inline const char* CharPtr(const char* s) { return s; }
 239
 240 // Tests using Invoke() with a 7-argument function.
 241 TEST(InvokeTest, FunctionThatTakes7Arguments) {
 242   Action<std::string(const char*, const char*, const char*, const char*,
 243                      const char*, const char*, const char*)>
 244       a = Invoke(Concat7);
 245   EXPECT_EQ("1234567",
 246             a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
 247                                       CharPtr("4"), CharPtr("5"), CharPtr("6"),
 248                                       CharPtr("7"))));
 249 }
 250
 251 // Tests using Invoke() with a 8-argument function.
 252 TEST(InvokeTest, FunctionThatTakes8Arguments) {
 253   Action<std::string(const char*, const char*, const char*, const char*,
 254                      const char*, const char*, const char*, const char*)>
 255       a = Invoke(Concat8);
 256   EXPECT_EQ("12345678",
 257             a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
 258                                       CharPtr("4"), CharPtr("5"), CharPtr("6"),
 259                                       CharPtr("7"), CharPtr("8"))));
 260 }
 261
 262 // Tests using Invoke() with a 9-argument function.
 263 TEST(InvokeTest, FunctionThatTakes9Arguments) {
 264   Action<std::string(const char*, const char*, const char*, const char*,
 265                      const char*, const char*, const char*, const char*,
 266                      const char*)>
 267       a = Invoke(Concat9);
 268   EXPECT_EQ("123456789", a.Perform(std::make_tuple(
 269                              CharPtr("1"), CharPtr("2"), CharPtr("3"),
 270                              CharPtr("4"), CharPtr("5"), CharPtr("6"),
 271                              CharPtr("7"), CharPtr("8"), CharPtr("9"))));
 272 }
 273
 274 // Tests using Invoke() with a 10-argument function.
 275 TEST(InvokeTest, FunctionThatTakes10Arguments) {
 276   Action<std::string(const char*, const char*, const char*, const char*,
 277                      const char*, const char*, const char*, const char*,
 278                      const char*, const char*)>
 279       a = Invoke(Concat10);
 280   EXPECT_EQ("1234567890",
 281             a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
 282                                       CharPtr("4"), CharPtr("5"), CharPtr("6"),
 283                                       CharPtr("7"), CharPtr("8"), CharPtr("9"),
 284                                       CharPtr("0"))));
 285 }
 286
 287 // Tests using Invoke() with functions with parameters declared as Unused.
 288 TEST(InvokeTest, FunctionWithUnusedParameters) {
 289   Action<int(int, int, double, const std::string&)> a1 = Invoke(SumOfFirst2);
 290   std::tuple<int, int, double, std::string> dummy =
 291       std::make_tuple(10, 2, 5.6, std::string("hi"));
 292   EXPECT_EQ(12, a1.Perform(dummy));
 293
 294   Action<int(int, int, bool, int*)> a2 =
 295       Invoke(SumOfFirst2);
 296   EXPECT_EQ(
 297       23, a2.Perform(std::make_tuple(20, 3, true, static_cast<int*>(nullptr))));
 298 }
 299
 300 // Tests using Invoke() with methods with parameters declared as Unused.
 301 TEST(InvokeTest, MethodWithUnusedParameters) {
 302   Foo foo;
 303   Action<int(std::string, bool, int, int)> a1 = Invoke(&foo, &Foo::SumOfLast2);
 304   EXPECT_EQ(12, a1.Perform(std::make_tuple(CharPtr("hi"), true, 10, 2)));
 305
 306   Action<int(char, double, int, int)> a2 =
 307       Invoke(&foo, &Foo::SumOfLast2);
 308   EXPECT_EQ(23, a2.Perform(std::make_tuple('a', 2.5, 20, 3)));
 309 }
 310
 311 // Tests using Invoke() with a functor.
 312 TEST(InvokeTest, Functor) {
 313   Action<long(long, int)> a = Invoke(plus<long>());  // NOLINT
 314   EXPECT_EQ(3L, a.Perform(std::make_tuple(1, 2)));
 315 }
 316
 317 // Tests using Invoke(f) as an action of a compatible type.
 318 TEST(InvokeTest, FunctionWithCompatibleType) {
 319   Action<long(int, short, char, bool)> a = Invoke(SumOf4);  // NOLINT
 320   EXPECT_EQ(4321, a.Perform(std::make_tuple(4000, Short(300), Char(20), true)));
 321 }
 322
 323 // Tests using Invoke() with an object pointer and a method pointer.
 324
 325 // Tests using Invoke() with a nullary method.
 326 TEST(InvokeMethodTest, Nullary) {
 327   Foo foo;
 328   Action<int()> a = Invoke(&foo, &Foo::Nullary);  // NOLINT
 329   EXPECT_EQ(123, a.Perform(std::make_tuple()));
 330 }
 331
 332 // Tests using Invoke() with a unary method.
 333 TEST(InvokeMethodTest, Unary) {
 334   Foo foo;
 335   Action<short(long)> a = Invoke(&foo, &Foo::Unary);  // NOLINT
 336   EXPECT_EQ(4123, a.Perform(std::make_tuple(4000)));
 337 }
 338
 339 // Tests using Invoke() with a binary method.
 340 TEST(InvokeMethodTest, Binary) {
 341   Foo foo;
 342   Action<std::string(const std::string&, char)> a = Invoke(&foo, &Foo::Binary);
 343   std::string s("Hell");
 344   std::tuple<std::string, char> dummy = std::make_tuple(s, 'o');
 345   EXPECT_EQ("Hello", a.Perform(dummy));
 346 }
 347
 348 // Tests using Invoke() with a ternary method.
 349 TEST(InvokeMethodTest, Ternary) {
 350   Foo foo;
 351   Action<int(int, bool, char)> a = Invoke(&foo, &Foo::Ternary);  // NOLINT
 352   EXPECT_EQ(1124, a.Perform(std::make_tuple(1000, true, Char(1))));
 353 }
 354
 355 // Tests using Invoke() with a 4-argument method.
 356 TEST(InvokeMethodTest, MethodThatTakes4Arguments) {
 357   Foo foo;
 358   Action<int(int, int, int, int)> a = Invoke(&foo, &Foo::SumOf4);  // NOLINT
 359   EXPECT_EQ(1357, a.Perform(std::make_tuple(1000, 200, 30, 4)));
 360 }
 361
 362 // Tests using Invoke() with a 5-argument method.
 363 TEST(InvokeMethodTest, MethodThatTakes5Arguments) {
 364   Foo foo;
 365   Action<int(int, int, int, int, int)> a = Invoke(&foo, &Foo::SumOf5);  // NOLINT
 366   EXPECT_EQ(12345, a.Perform(std::make_tuple(10000, 2000, 300, 40, 5)));
 367 }
 368
 369 // Tests using Invoke() with a 6-argument method.
 370 TEST(InvokeMethodTest, MethodThatTakes6Arguments) {
 371   Foo foo;
 372   Action<int(int, int, int, int, int, int)> a =  // NOLINT
 373       Invoke(&foo, &Foo::SumOf6);
 374   EXPECT_EQ(123456,
 375             a.Perform(std::make_tuple(100000, 20000, 3000, 400, 50, 6)));
 376 }
 377
 378 // Tests using Invoke() with a 7-argument method.
 379 TEST(InvokeMethodTest, MethodThatTakes7Arguments) {
 380   Foo foo;
 381   Action<std::string(const char*, const char*, const char*, const char*,
 382                      const char*, const char*, const char*)>
 383       a = Invoke(&foo, &Foo::Concat7);
 384   EXPECT_EQ("1234567",
 385             a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
 386                                       CharPtr("4"), CharPtr("5"), CharPtr("6"),
 387                                       CharPtr("7"))));
 388 }
 389
 390 // Tests using Invoke() with a 8-argument method.
 391 TEST(InvokeMethodTest, MethodThatTakes8Arguments) {
 392   Foo foo;
 393   Action<std::string(const char*, const char*, const char*, const char*,
 394                      const char*, const char*, const char*, const char*)>
 395       a = Invoke(&foo, &Foo::Concat8);
 396   EXPECT_EQ("12345678",
 397             a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
 398                                       CharPtr("4"), CharPtr("5"), CharPtr("6"),
 399                                       CharPtr("7"), CharPtr("8"))));
 400 }
 401
 402 // Tests using Invoke() with a 9-argument method.
 403 TEST(InvokeMethodTest, MethodThatTakes9Arguments) {
 404   Foo foo;
 405   Action<std::string(const char*, const char*, const char*, const char*,
 406                      const char*, const char*, const char*, const char*,
 407                      const char*)>
 408       a = Invoke(&foo, &Foo::Concat9);
 409   EXPECT_EQ("123456789", a.Perform(std::make_tuple(
 410                              CharPtr("1"), CharPtr("2"), CharPtr("3"),
 411                              CharPtr("4"), CharPtr("5"), CharPtr("6"),
 412                              CharPtr("7"), CharPtr("8"), CharPtr("9"))));
 413 }
 414
 415 // Tests using Invoke() with a 10-argument method.
 416 TEST(InvokeMethodTest, MethodThatTakes10Arguments) {
 417   Foo foo;
 418   Action<std::string(const char*, const char*, const char*, const char*,
 419                      const char*, const char*, const char*, const char*,
 420                      const char*, const char*)>
 421       a = Invoke(&foo, &Foo::Concat10);
 422   EXPECT_EQ("1234567890",
 423             a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
 424                                       CharPtr("4"), CharPtr("5"), CharPtr("6"),
 425                                       CharPtr("7"), CharPtr("8"), CharPtr("9"),
 426                                       CharPtr("0"))));
 427 }
 428
 429 // Tests using Invoke(f) as an action of a compatible type.
 430 TEST(InvokeMethodTest, MethodWithCompatibleType) {
 431   Foo foo;
 432   Action<long(int, short, char, bool)> a =  // NOLINT
 433       Invoke(&foo, &Foo::SumOf4);
 434   EXPECT_EQ(4444, a.Perform(std::make_tuple(4000, Short(300), Char(20), true)));
 435 }
 436
 437 // Tests using WithoutArgs with an action that takes no argument.
 438 TEST(WithoutArgsTest, NoArg) {
 439   Action<int(int n)> a = WithoutArgs(Invoke(Nullary));  // NOLINT
 440   EXPECT_EQ(1, a.Perform(std::make_tuple(2)));
 441 }
 442
 443 // Tests using WithArg with an action that takes 1 argument.
 444 TEST(WithArgTest, OneArg) {
 445   Action<bool(double x, int n)> b = WithArg<1>(Invoke(Unary));  // NOLINT
 446   EXPECT_TRUE(b.Perform(std::make_tuple(1.5, -1)));
 447   EXPECT_FALSE(b.Perform(std::make_tuple(1.5, 1)));
 448 }
 449
 450 TEST(ReturnArgActionTest, WorksForOneArgIntArg0) {
 451   const Action<int(int)> a = ReturnArg<0>();
 452   EXPECT_EQ(5, a.Perform(std::make_tuple(5)));
 453 }
 454
 455 TEST(ReturnArgActionTest, WorksForMultiArgBoolArg0) {
 456   const Action<bool(bool, bool, bool)> a = ReturnArg<0>();
 457   EXPECT_TRUE(a.Perform(std::make_tuple(true, false, false)));
 458 }
 459
 460 TEST(ReturnArgActionTest, WorksForMultiArgStringArg2) {
 461   const Action<std::string(int, int, std::string, int)> a = ReturnArg<2>();
 462   EXPECT_EQ("seven", a.Perform(std::make_tuple(5, 6, std::string("seven"), 8)));
 463 }
 464
 465 TEST(SaveArgActionTest, WorksForSameType) {
 466   int result = 0;
 467   const Action<void(int n)> a1 = SaveArg<0>(&result);
 468   a1.Perform(std::make_tuple(5));
 469   EXPECT_EQ(5, result);
 470 }
 471
 472 TEST(SaveArgActionTest, WorksForCompatibleType) {
 473   int result = 0;
 474   const Action<void(bool, char)> a1 = SaveArg<1>(&result);
 475   a1.Perform(std::make_tuple(true, 'a'));
 476   EXPECT_EQ('a', result);
 477 }
 478
 479 TEST(SaveArgPointeeActionTest, WorksForSameType) {
 480   int result = 0;
 481   const int value = 5;
 482   const Action<void(const int*)> a1 = SaveArgPointee<0>(&result);
 483   a1.Perform(std::make_tuple(&value));
 484   EXPECT_EQ(5, result);
 485 }
 486
 487 TEST(SaveArgPointeeActionTest, WorksForCompatibleType) {
 488   int result = 0;
 489   char value = 'a';
 490   const Action<void(bool, char*)> a1 = SaveArgPointee<1>(&result);
 491   a1.Perform(std::make_tuple(true, &value));
 492   EXPECT_EQ('a', result);
 493 }
 494
 495 TEST(SetArgRefereeActionTest, WorksForSameType) {
 496   int value = 0;
 497   const Action<void(int&)> a1 = SetArgReferee<0>(1);
 498   a1.Perform(std::tuple<int&>(value));
 499   EXPECT_EQ(1, value);
 500 }
 501
 502 TEST(SetArgRefereeActionTest, WorksForCompatibleType) {
 503   int value = 0;
 504   const Action<void(int, int&)> a1 = SetArgReferee<1>('a');
 505   a1.Perform(std::tuple<int, int&>(0, value));
 506   EXPECT_EQ('a', value);
 507 }
 508
 509 TEST(SetArgRefereeActionTest, WorksWithExtraArguments) {
 510   int value = 0;
 511   const Action<void(bool, int, int&, const char*)> a1 = SetArgReferee<2>('a');
 512   a1.Perform(std::tuple<bool, int, int&, const char*>(true, 0, value, "hi"));
 513   EXPECT_EQ('a', value);
 514 }
 515
 516 // A class that can be used to verify that its destructor is called: it will set
 517 // the bool provided to the constructor to true when destroyed.
 518 class DeletionTester {
 519  public:
 520   explicit DeletionTester(bool* is_deleted)
 521     : is_deleted_(is_deleted) {
 522     // Make sure the bit is set to false.
 523     *is_deleted_ = false;
 524   }
 525
 526   ~DeletionTester() {
 527     *is_deleted_ = true;
 528   }
 529
 530  private:
 531   bool* is_deleted_;
 532 };
 533
 534 TEST(DeleteArgActionTest, OneArg) {
 535   bool is_deleted = false;
 536   DeletionTester* t = new DeletionTester(&is_deleted);
 537   const Action<void(DeletionTester*)> a1 = DeleteArg<0>();      // NOLINT
 538   EXPECT_FALSE(is_deleted);
 539   a1.Perform(std::make_tuple(t));
 540   EXPECT_TRUE(is_deleted);
 541 }
 542
 543 TEST(DeleteArgActionTest, TenArgs) {
 544   bool is_deleted = false;
 545   DeletionTester* t = new DeletionTester(&is_deleted);
 546   const Action<void(bool, int, int, const char*, bool,
 547                     int, int, int, int, DeletionTester*)> a1 = DeleteArg<9>();
 548   EXPECT_FALSE(is_deleted);
 549   a1.Perform(std::make_tuple(true, 5, 6, CharPtr("hi"), false, 7, 8, 9, 10, t));
 550   EXPECT_TRUE(is_deleted);
 551 }
 552
 553 #if GTEST_HAS_EXCEPTIONS
 554
 555 TEST(ThrowActionTest, ThrowsGivenExceptionInVoidFunction) {
 556   const Action<void(int n)> a = Throw('a');
 557   EXPECT_THROW(a.Perform(std::make_tuple(0)), char);
 558 }
 559
 560 class MyException {};
 561
 562 TEST(ThrowActionTest, ThrowsGivenExceptionInNonVoidFunction) {
 563   const Action<double(char ch)> a = Throw(MyException());
 564   EXPECT_THROW(a.Perform(std::make_tuple('0')), MyException);
 565 }
 566
 567 TEST(ThrowActionTest, ThrowsGivenExceptionInNullaryFunction) {
 568   const Action<double()> a = Throw(MyException());
 569   EXPECT_THROW(a.Perform(std::make_tuple()), MyException);
 570 }
 571
 572 class Object {
 573  public:
 574   virtual ~Object() {}
 575   virtual void Func() {}
 576 };
 577
 578 class MockObject : public Object {
 579  public:
 580   ~MockObject() override {}
 581   MOCK_METHOD(void, Func, (), (override));
 582 };
 583
 584 TEST(ThrowActionTest, Times0) {
 585   EXPECT_NONFATAL_FAILURE(
 586       [] {
 587         try {
 588           MockObject m;
 589           ON_CALL(m, Func()).WillByDefault([] { throw "something"; });
 590           EXPECT_CALL(m, Func()).Times(0);
 591           m.Func();
 592         } catch (...) {
 593           // Exception is caught but Times(0) still triggers a failure.
 594         }
 595       }(),
 596       "");
 597 }
 598
 599 #endif  // GTEST_HAS_EXCEPTIONS
 600
 601 // Tests that SetArrayArgument<N>(first, last) sets the elements of the array
 602 // pointed to by the N-th (0-based) argument to values in range [first, last).
 603 TEST(SetArrayArgumentTest, SetsTheNthArray) {
 604   using MyFunction = void(bool, int*, char*);
 605   int numbers[] = { 1, 2, 3 };
 606   Action<MyFunction> a = SetArrayArgument<1>(numbers, numbers + 3);
 607
 608   int n[4] = {};
 609   int* pn = n;
 610   char ch[4] = {};
 611   char* pch = ch;
 612   a.Perform(std::make_tuple(true, pn, pch));
 613   EXPECT_EQ(1, n[0]);
 614   EXPECT_EQ(2, n[1]);
 615   EXPECT_EQ(3, n[2]);
 616   EXPECT_EQ(0, n[3]);
 617   EXPECT_EQ('\0', ch[0]);
 618   EXPECT_EQ('\0', ch[1]);
 619   EXPECT_EQ('\0', ch[2]);
 620   EXPECT_EQ('\0', ch[3]);
 621
 622   // Tests first and last are iterators.
 623   std::string letters = "abc";
 624   a = SetArrayArgument<2>(letters.begin(), letters.end());
 625   std::fill_n(n, 4, 0);
 626   std::fill_n(ch, 4, '\0');
 627   a.Perform(std::make_tuple(true, pn, pch));
 628   EXPECT_EQ(0, n[0]);
 629   EXPECT_EQ(0, n[1]);
 630   EXPECT_EQ(0, n[2]);
 631   EXPECT_EQ(0, n[3]);
 632   EXPECT_EQ('a', ch[0]);
 633   EXPECT_EQ('b', ch[1]);
 634   EXPECT_EQ('c', ch[2]);
 635   EXPECT_EQ('\0', ch[3]);
 636 }
 637
 638 // Tests SetArrayArgument<N>(first, last) where first == last.
 639 TEST(SetArrayArgumentTest, SetsTheNthArrayWithEmptyRange) {
 640   using MyFunction = void(bool, int*);
 641   int numbers[] = { 1, 2, 3 };
 642   Action<MyFunction> a = SetArrayArgument<1>(numbers, numbers);
 643
 644   int n[4] = {};
 645   int* pn = n;
 646   a.Perform(std::make_tuple(true, pn));
 647   EXPECT_EQ(0, n[0]);
 648   EXPECT_EQ(0, n[1]);
 649   EXPECT_EQ(0, n[2]);
 650   EXPECT_EQ(0, n[3]);
 651 }
 652
 653 // Tests SetArrayArgument<N>(first, last) where *first is convertible
 654 // (but not equal) to the argument type.
 655 TEST(SetArrayArgumentTest, SetsTheNthArrayWithConvertibleType) {
 656   using MyFunction = void(bool, int*);
 657   char chars[] = { 97, 98, 99 };
 658   Action<MyFunction> a = SetArrayArgument<1>(chars, chars + 3);
 659
 660   int codes[4] = { 111, 222, 333, 444 };
 661   int* pcodes = codes;
 662   a.Perform(std::make_tuple(true, pcodes));
 663   EXPECT_EQ(97, codes[0]);
 664   EXPECT_EQ(98, codes[1]);
 665   EXPECT_EQ(99, codes[2]);
 666   EXPECT_EQ(444, codes[3]);
 667 }
 668
 669 // Test SetArrayArgument<N>(first, last) with iterator as argument.
 670 TEST(SetArrayArgumentTest, SetsTheNthArrayWithIteratorArgument) {
 671   using MyFunction = void(bool, std::back_insert_iterator<std::string>);
 672   std::string letters = "abc";
 673   Action<MyFunction> a = SetArrayArgument<1>(letters.begin(), letters.end());
 674
 675   std::string s;
 676   a.Perform(std::make_tuple(true, back_inserter(s)));
 677   EXPECT_EQ(letters, s);
 678 }
 679
 680 TEST(ReturnPointeeTest, Works) {
 681   int n = 42;
 682   const Action<int()> a = ReturnPointee(&n);
 683   EXPECT_EQ(42, a.Perform(std::make_tuple()));
 684
 685   n = 43;
 686   EXPECT_EQ(43, a.Perform(std::make_tuple()));
 687 }
 688
 689 // Tests InvokeArgument<N>(...).
 690
 691 // Tests using InvokeArgument with a nullary function.
 692 TEST(InvokeArgumentTest, Function0) {
 693   Action<int(int, int (*)())> a = InvokeArgument<1>();  // NOLINT
 694   EXPECT_EQ(1, a.Perform(std::make_tuple(2, &Nullary)));
 695 }
 696
 697 // Tests using InvokeArgument with a unary function.
 698 TEST(InvokeArgumentTest, Functor1) {
 699   Action<int(UnaryFunctor)> a = InvokeArgument<0>(true);  // NOLINT
 700   EXPECT_EQ(1, a.Perform(std::make_tuple(UnaryFunctor())));
 701 }
 702
 703 // Tests using InvokeArgument with a 5-ary function.
 704 TEST(InvokeArgumentTest, Function5) {
 705   Action<int(int (*)(int, int, int, int, int))> a =  // NOLINT
 706       InvokeArgument<0>(10000, 2000, 300, 40, 5);
 707   EXPECT_EQ(12345, a.Perform(std::make_tuple(&SumOf5)));
 708 }
 709
 710 // Tests using InvokeArgument with a 5-ary functor.
 711 TEST(InvokeArgumentTest, Functor5) {
 712   Action<int(SumOf5Functor)> a =  // NOLINT
 713       InvokeArgument<0>(10000, 2000, 300, 40, 5);
 714   EXPECT_EQ(12345, a.Perform(std::make_tuple(SumOf5Functor())));
 715 }
 716
 717 // Tests using InvokeArgument with a 6-ary function.
 718 TEST(InvokeArgumentTest, Function6) {
 719   Action<int(int (*)(int, int, int, int, int, int))> a =  // NOLINT
 720       InvokeArgument<0>(100000, 20000, 3000, 400, 50, 6);
 721   EXPECT_EQ(123456, a.Perform(std::make_tuple(&SumOf6)));
 722 }
 723
 724 // Tests using InvokeArgument with a 6-ary functor.
 725 TEST(InvokeArgumentTest, Functor6) {
 726   Action<int(SumOf6Functor)> a =  // NOLINT
 727       InvokeArgument<0>(100000, 20000, 3000, 400, 50, 6);
 728   EXPECT_EQ(123456, a.Perform(std::make_tuple(SumOf6Functor())));
 729 }
 730
 731 // Tests using InvokeArgument with a 7-ary function.
 732 TEST(InvokeArgumentTest, Function7) {
 733   Action<std::string(std::string(*)(const char*, const char*, const char*,
 734                                     const char*, const char*, const char*,
 735                                     const char*))>
 736       a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7");
 737   EXPECT_EQ("1234567", a.Perform(std::make_tuple(&Concat7)));
 738 }
 739
 740 // Tests using InvokeArgument with a 8-ary function.
 741 TEST(InvokeArgumentTest, Function8) {
 742   Action<std::string(std::string(*)(const char*, const char*, const char*,
 743                                     const char*, const char*, const char*,
 744                                     const char*, const char*))>
 745       a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7", "8");
 746   EXPECT_EQ("12345678", a.Perform(std::make_tuple(&Concat8)));
 747 }
 748
 749 // Tests using InvokeArgument with a 9-ary function.
 750 TEST(InvokeArgumentTest, Function9) {
 751   Action<std::string(std::string(*)(const char*, const char*, const char*,
 752                                     const char*, const char*, const char*,
 753                                     const char*, const char*, const char*))>
 754       a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7", "8", "9");
 755   EXPECT_EQ("123456789", a.Perform(std::make_tuple(&Concat9)));
 756 }
 757
 758 // Tests using InvokeArgument with a 10-ary function.
 759 TEST(InvokeArgumentTest, Function10) {
 760   Action<std::string(std::string(*)(
 761       const char*, const char*, const char*, const char*, const char*,
 762       const char*, const char*, const char*, const char*, const char*))>
 763       a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7", "8", "9", "0");
 764   EXPECT_EQ("1234567890", a.Perform(std::make_tuple(&Concat10)));
 765 }
 766
 767 // Tests using InvokeArgument with a function that takes a pointer argument.
 768 TEST(InvokeArgumentTest, ByPointerFunction) {
 769   Action<const char*(const char* (*)(const char* input, short n))>  // NOLINT
 770       a = InvokeArgument<0>(static_cast<const char*>("Hi"), Short(1));
 771   EXPECT_STREQ("i", a.Perform(std::make_tuple(&Binary)));
 772 }
 773
 774 // Tests using InvokeArgument with a function that takes a const char*
 775 // by passing it a C-string literal.
 776 TEST(InvokeArgumentTest, FunctionWithCStringLiteral) {
 777   Action<const char*(const char* (*)(const char* input, short n))>  // NOLINT
 778       a = InvokeArgument<0>("Hi", Short(1));
 779   EXPECT_STREQ("i", a.Perform(std::make_tuple(&Binary)));
 780 }
 781
 782 // Tests using InvokeArgument with a function that takes a const reference.
 783 TEST(InvokeArgumentTest, ByConstReferenceFunction) {
 784   Action<bool(bool (*function)(const std::string& s))> a =  // NOLINT
 785       InvokeArgument<0>(std::string("Hi"));
 786   // When action 'a' is constructed, it makes a copy of the temporary
 787   // string object passed to it, so it's OK to use 'a' later, when the
 788   // temporary object has already died.
 789   EXPECT_TRUE(a.Perform(std::make_tuple(&ByConstRef)));
 790 }
 791
 792 // Tests using InvokeArgument with ByRef() and a function that takes a
 793 // const reference.
 794 TEST(InvokeArgumentTest, ByExplicitConstReferenceFunction) {
 795   Action<bool(bool (*)(const double& x))> a =  // NOLINT
 796       InvokeArgument<0>(ByRef(g_double));
 797   // The above line calls ByRef() on a const value.
 798   EXPECT_TRUE(a.Perform(std::make_tuple(&ReferencesGlobalDouble)));
 799
 800   double x = 0;
 801   a = InvokeArgument<0>(ByRef(x));  // This calls ByRef() on a non-const.
 802   EXPECT_FALSE(a.Perform(std::make_tuple(&ReferencesGlobalDouble)));
 803 }
 804
 805 // Tests DoAll(a1, a2).
 806 TEST(DoAllTest, TwoActions) {
 807   int n = 0;
 808   Action<int(int*)> a = DoAll(SetArgPointee<0>(1),  // NOLINT
 809                               Return(2));
 810   EXPECT_EQ(2, a.Perform(std::make_tuple(&n)));
 811   EXPECT_EQ(1, n);
 812 }
 813
 814 // Tests DoAll(a1, a2, a3).
 815 TEST(DoAllTest, ThreeActions) {
 816   int m = 0, n = 0;
 817   Action<int(int*, int*)> a = DoAll(SetArgPointee<0>(1),  // NOLINT
 818                                     SetArgPointee<1>(2), Return(3));
 819   EXPECT_EQ(3, a.Perform(std::make_tuple(&m, &n)));
 820   EXPECT_EQ(1, m);
 821   EXPECT_EQ(2, n);
 822 }
 823
 824 // Tests DoAll(a1, a2, a3, a4).
 825 TEST(DoAllTest, FourActions) {
 826   int m = 0, n = 0;
 827   char ch = '\0';
 828   Action<int(int*, int*, char*)> a =  // NOLINT
 829       DoAll(SetArgPointee<0>(1), SetArgPointee<1>(2), SetArgPointee<2>('a'),
 830             Return(3));
 831   EXPECT_EQ(3, a.Perform(std::make_tuple(&m, &n, &ch)));
 832   EXPECT_EQ(1, m);
 833   EXPECT_EQ(2, n);
 834   EXPECT_EQ('a', ch);
 835 }
 836
 837 // Tests DoAll(a1, a2, a3, a4, a5).
 838 TEST(DoAllTest, FiveActions) {
 839   int m = 0, n = 0;
 840   char a = '\0', b = '\0';
 841   Action<int(int*, int*, char*, char*)> action =  // NOLINT
 842       DoAll(SetArgPointee<0>(1), SetArgPointee<1>(2), SetArgPointee<2>('a'),
 843             SetArgPointee<3>('b'), Return(3));
 844   EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b)));
 845   EXPECT_EQ(1, m);
 846   EXPECT_EQ(2, n);
 847   EXPECT_EQ('a', a);
 848   EXPECT_EQ('b', b);
 849 }
 850
 851 // Tests DoAll(a1, a2, ..., a6).
 852 TEST(DoAllTest, SixActions) {
 853   int m = 0, n = 0;
 854   char a = '\0', b = '\0', c = '\0';
 855   Action<int(int*, int*, char*, char*, char*)> action =  // NOLINT
 856       DoAll(SetArgPointee<0>(1), SetArgPointee<1>(2), SetArgPointee<2>('a'),
 857             SetArgPointee<3>('b'), SetArgPointee<4>('c'), Return(3));
 858   EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c)));
 859   EXPECT_EQ(1, m);
 860   EXPECT_EQ(2, n);
 861   EXPECT_EQ('a', a);
 862   EXPECT_EQ('b', b);
 863   EXPECT_EQ('c', c);
 864 }
 865
 866 // Tests DoAll(a1, a2, ..., a7).
 867 TEST(DoAllTest, SevenActions) {
 868   int m = 0, n = 0;
 869   char a = '\0', b = '\0', c = '\0', d = '\0';
 870   Action<int(int*, int*, char*, char*, char*, char*)> action =  // NOLINT
 871       DoAll(SetArgPointee<0>(1), SetArgPointee<1>(2), SetArgPointee<2>('a'),
 872             SetArgPointee<3>('b'), SetArgPointee<4>('c'), SetArgPointee<5>('d'),
 873             Return(3));
 874   EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c, &d)));
 875   EXPECT_EQ(1, m);
 876   EXPECT_EQ(2, n);
 877   EXPECT_EQ('a', a);
 878   EXPECT_EQ('b', b);
 879   EXPECT_EQ('c', c);
 880   EXPECT_EQ('d', d);
 881 }
 882
 883 // Tests DoAll(a1, a2, ..., a8).
 884 TEST(DoAllTest, EightActions) {
 885   int m = 0, n = 0;
 886   char a = '\0', b = '\0', c = '\0', d = '\0', e = '\0';
 887   Action<int(int*, int*, char*, char*, char*, char*,  // NOLINT
 888              char*)>
 889       action =
 890           DoAll(SetArgPointee<0>(1), SetArgPointee<1>(2), SetArgPointee<2>('a'),
 891                 SetArgPointee<3>('b'), SetArgPointee<4>('c'),
 892                 SetArgPointee<5>('d'), SetArgPointee<6>('e'), Return(3));
 893   EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c, &d, &e)));
 894   EXPECT_EQ(1, m);
 895   EXPECT_EQ(2, n);
 896   EXPECT_EQ('a', a);
 897   EXPECT_EQ('b', b);
 898   EXPECT_EQ('c', c);
 899   EXPECT_EQ('d', d);
 900   EXPECT_EQ('e', e);
 901 }
 902
 903 // Tests DoAll(a1, a2, ..., a9).
 904 TEST(DoAllTest, NineActions) {
 905   int m = 0, n = 0;
 906   char a = '\0', b = '\0', c = '\0', d = '\0', e = '\0', f = '\0';
 907   Action<int(int*, int*, char*, char*, char*, char*,  // NOLINT
 908              char*, char*)>
 909       action = DoAll(SetArgPointee<0>(1), SetArgPointee<1>(2),
 910                      SetArgPointee<2>('a'), SetArgPointee<3>('b'),
 911                      SetArgPointee<4>('c'), SetArgPointee<5>('d'),
 912                      SetArgPointee<6>('e'), SetArgPointee<7>('f'), Return(3));
 913   EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c, &d, &e, &f)));
 914   EXPECT_EQ(1, m);
 915   EXPECT_EQ(2, n);
 916   EXPECT_EQ('a', a);
 917   EXPECT_EQ('b', b);
 918   EXPECT_EQ('c', c);
 919   EXPECT_EQ('d', d);
 920   EXPECT_EQ('e', e);
 921   EXPECT_EQ('f', f);
 922 }
 923
 924 // Tests DoAll(a1, a2, ..., a10).
 925 TEST(DoAllTest, TenActions) {
 926   int m = 0, n = 0;
 927   char a = '\0', b = '\0', c = '\0', d = '\0';
 928   char e = '\0', f = '\0', g = '\0';
 929   Action<int(int*, int*, char*, char*, char*, char*,  // NOLINT
 930              char*, char*, char*)>
 931       action =
 932           DoAll(SetArgPointee<0>(1), SetArgPointee<1>(2), SetArgPointee<2>('a'),
 933                 SetArgPointee<3>('b'), SetArgPointee<4>('c'),
 934                 SetArgPointee<5>('d'), SetArgPointee<6>('e'),
 935                 SetArgPointee<7>('f'), SetArgPointee<8>('g'), Return(3));
 936   EXPECT_EQ(
 937       3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c, &d, &e, &f, &g)));
 938   EXPECT_EQ(1, m);
 939   EXPECT_EQ(2, n);
 940   EXPECT_EQ('a', a);
 941   EXPECT_EQ('b', b);
 942   EXPECT_EQ('c', c);
 943   EXPECT_EQ('d', d);
 944   EXPECT_EQ('e', e);
 945   EXPECT_EQ('f', f);
 946   EXPECT_EQ('g', g);
 947 }
 948
 949 TEST(DoAllTest, NoArgs) {
 950   bool ran_first = false;
 951   Action<bool()> a =
 952       DoAll([&] { ran_first = true; }, [&] { return ran_first; });
 953   EXPECT_TRUE(a.Perform({}));
 954 }
 955
 956 TEST(DoAllTest, MoveOnlyArgs) {
 957   bool ran_first = false;
 958   Action<int(std::unique_ptr<int>)> a =
 959       DoAll(InvokeWithoutArgs([&] { ran_first = true; }),
 960             [](std::unique_ptr<int> p) { return *p; });
 961   EXPECT_EQ(7, a.Perform(std::make_tuple(std::unique_ptr<int>(new int(7)))));
 962   EXPECT_TRUE(ran_first);
 963 }
 964
 965 TEST(DoAllTest, ImplicitlyConvertsActionArguments) {
 966   bool ran_first = false;
 967   // Action<void(std::vector<int>)> isn't an
 968   // Action<void(const std::vector<int>&) but can be converted.
 969   Action<void(std::vector<int>)> first = [&] { ran_first = true; };
 970   Action<int(std::vector<int>)> a =
 971       DoAll(first, [](std::vector<int> arg) { return arg.front(); });
 972   EXPECT_EQ(7, a.Perform(std::make_tuple(std::vector<int>{7})));
 973   EXPECT_TRUE(ran_first);
 974 }
 975
 976 // The ACTION*() macros trigger warning C4100 (unreferenced formal
 977 // parameter) in MSVC with -W4.  Unfortunately they cannot be fixed in
 978 // the macro definition, as the warnings are generated when the macro
 979 // is expanded and macro expansion cannot contain #pragma.  Therefore
 980 // we suppress them here.
 981 // Also suppress C4503 decorated name length exceeded, name was truncated
 982 #ifdef _MSC_VER
 983 #pragma warning(push)
 984 #pragma warning(disable : 4100)
 985 #pragma warning(disable : 4503)
 986 #endif
 987 // Tests the ACTION*() macro family.
 988
 989 // Tests that ACTION() can define an action that doesn't reference the
 990 // mock function arguments.
 991 ACTION(Return5) { return 5; }
 992
 993 TEST(ActionMacroTest, WorksWhenNotReferencingArguments) {
 994   Action<double()> a1 = Return5();
 995   EXPECT_DOUBLE_EQ(5, a1.Perform(std::make_tuple()));
 996
 997   Action<int(double, bool)> a2 = Return5();
 998   EXPECT_EQ(5, a2.Perform(std::make_tuple(1, true)));
 999 }
1000
1001 // Tests that ACTION() can define an action that returns void.
1002 ACTION(IncrementArg1) { (*arg1)++; }
1003
1004 TEST(ActionMacroTest, WorksWhenReturningVoid) {
1005   Action<void(int, int*)> a1 = IncrementArg1();
1006   int n = 0;
1007   a1.Perform(std::make_tuple(5, &n));
1008   EXPECT_EQ(1, n);
1009 }
1010
1011 // Tests that the body of ACTION() can reference the type of the
1012 // argument.
1013 ACTION(IncrementArg2) {
1014   StaticAssertTypeEq<int*, arg2_type>();
1015   arg2_type temp = arg2;
1016   (*temp)++;
1017 }
1018
1019 TEST(ActionMacroTest, CanReferenceArgumentType) {
1020   Action<void(int, bool, int*)> a1 = IncrementArg2();
1021   int n = 0;
1022   a1.Perform(std::make_tuple(5, false, &n));
1023   EXPECT_EQ(1, n);
1024 }
1025
1026 // Tests that the body of ACTION() can reference the argument tuple
1027 // via args_type and args.
1028 ACTION(Sum2) {
1029   StaticAssertTypeEq<std::tuple<int, char, int*>, args_type>();
1030   args_type args_copy = args;
1031   return std::get<0>(args_copy) + std::get<1>(args_copy);
1032 }
1033
1034 TEST(ActionMacroTest, CanReferenceArgumentTuple) {
1035   Action<int(int, char, int*)> a1 = Sum2();
1036   int dummy = 0;
1037   EXPECT_EQ(11, a1.Perform(std::make_tuple(5, Char(6), &dummy)));
1038 }
1039
1040 namespace {
1041
1042 // Tests that the body of ACTION() can reference the mock function
1043 // type.
1044 int Dummy(bool flag) { return flag ? 1 : 0; }
1045
1046 }  // namespace
1047
1048 ACTION(InvokeDummy) {
1049   StaticAssertTypeEq<int(bool), function_type>();
1050   function_type* fp = &Dummy;
1051   return (*fp)(true);
1052 }
1053
1054 TEST(ActionMacroTest, CanReferenceMockFunctionType) {
1055   Action<int(bool)> a1 = InvokeDummy();
1056   EXPECT_EQ(1, a1.Perform(std::make_tuple(true)));
1057   EXPECT_EQ(1, a1.Perform(std::make_tuple(false)));
1058 }
1059
1060 // Tests that the body of ACTION() can reference the mock function's
1061 // return type.
1062 ACTION(InvokeDummy2) {
1063   StaticAssertTypeEq<int, return_type>();
1064   return_type result = Dummy(true);
1065   return result;
1066 }
1067
1068 TEST(ActionMacroTest, CanReferenceMockFunctionReturnType) {
1069   Action<int(bool)> a1 = InvokeDummy2();
1070   EXPECT_EQ(1, a1.Perform(std::make_tuple(true)));
1071   EXPECT_EQ(1, a1.Perform(std::make_tuple(false)));
1072 }
1073
1074 // Tests that ACTION() works for arguments passed by const reference.
1075 ACTION(ReturnAddrOfConstBoolReferenceArg) {
1076   StaticAssertTypeEq<const bool&, arg1_type>();
1077   return &arg1;
1078 }
1079
1080 TEST(ActionMacroTest, WorksForConstReferenceArg) {
1081   Action<const bool*(int, const bool&)> a = ReturnAddrOfConstBoolReferenceArg();
1082   const bool b = false;
1083   EXPECT_EQ(&b, a.Perform(std::tuple<int, const bool&>(0, b)));
1084 }
1085
1086 // Tests that ACTION() works for arguments passed by non-const reference.
1087 ACTION(ReturnAddrOfIntReferenceArg) {
1088   StaticAssertTypeEq<int&, arg0_type>();
1089   return &arg0;
1090 }
1091
1092 TEST(ActionMacroTest, WorksForNonConstReferenceArg) {
1093   Action<int*(int&, bool, int)> a = ReturnAddrOfIntReferenceArg();
1094   int n = 0;
1095   EXPECT_EQ(&n, a.Perform(std::tuple<int&, bool, int>(n, true, 1)));
1096 }
1097
1098 // Tests that ACTION() can be used in a namespace.
1099 namespace action_test {
1100 ACTION(Sum) { return arg0 + arg1; }
1101 }  // namespace action_test
1102
1103 TEST(ActionMacroTest, WorksInNamespace) {
1104   Action<int(int, int)> a1 = action_test::Sum();
1105   EXPECT_EQ(3, a1.Perform(std::make_tuple(1, 2)));
1106 }
1107
1108 // Tests that the same ACTION definition works for mock functions with
1109 // different argument numbers.
1110 ACTION(PlusTwo) { return arg0 + 2; }
1111
1112 TEST(ActionMacroTest, WorksForDifferentArgumentNumbers) {
1113   Action<int(int)> a1 = PlusTwo();
1114   EXPECT_EQ(4, a1.Perform(std::make_tuple(2)));
1115
1116   Action<double(float, void*)> a2 = PlusTwo();
1117   int dummy;
1118   EXPECT_DOUBLE_EQ(6, a2.Perform(std::make_tuple(4.0f, &dummy)));
1119 }
1120
1121 // Tests that ACTION_P can define a parameterized action.
1122 ACTION_P(Plus, n) { return arg0 + n; }
1123
1124 TEST(ActionPMacroTest, DefinesParameterizedAction) {
1125   Action<int(int m, bool t)> a1 = Plus(9);
1126   EXPECT_EQ(10, a1.Perform(std::make_tuple(1, true)));
1127 }
1128
1129 // Tests that the body of ACTION_P can reference the argument types
1130 // and the parameter type.
1131 ACTION_P(TypedPlus, n) {
1132   arg0_type t1 = arg0;
1133   n_type t2 = n;
1134   return t1 + t2;
1135 }
1136
1137 TEST(ActionPMacroTest, CanReferenceArgumentAndParameterTypes) {
1138   Action<int(char m, bool t)> a1 = TypedPlus(9);
1139   EXPECT_EQ(10, a1.Perform(std::make_tuple(Char(1), true)));
1140 }
1141
1142 // Tests that a parameterized action can be used in any mock function
1143 // whose type is compatible.
1144 TEST(ActionPMacroTest, WorksInCompatibleMockFunction) {
1145   Action<std::string(const std::string& s)> a1 = Plus("tail");
1146   const std::string re = "re";
1147   std::tuple<const std::string> dummy = std::make_tuple(re);
1148   EXPECT_EQ("retail", a1.Perform(dummy));
1149 }
1150
1151 // Tests that we can use ACTION*() to define actions overloaded on the
1152 // number of parameters.
1153
1154 ACTION(OverloadedAction) { return arg0 ? arg1 : "hello"; }
1155
1156 ACTION_P(OverloadedAction, default_value) {
1157   return arg0 ? arg1 : default_value;
1158 }
1159
1160 ACTION_P2(OverloadedAction, true_value, false_value) {
1161   return arg0 ? true_value : false_value;
1162 }
1163
1164 TEST(ActionMacroTest, CanDefineOverloadedActions) {
1165   using MyAction = Action<const char*(bool, const char*)>;
1166
1167   const MyAction a1 = OverloadedAction();
1168   EXPECT_STREQ("hello", a1.Perform(std::make_tuple(false, CharPtr("world"))));
1169   EXPECT_STREQ("world", a1.Perform(std::make_tuple(true, CharPtr("world"))));
1170
1171   const MyAction a2 = OverloadedAction("hi");
1172   EXPECT_STREQ("hi", a2.Perform(std::make_tuple(false, CharPtr("world"))));
1173   EXPECT_STREQ("world", a2.Perform(std::make_tuple(true, CharPtr("world"))));
1174
1175   const MyAction a3 = OverloadedAction("hi", "you");
1176   EXPECT_STREQ("hi", a3.Perform(std::make_tuple(true, CharPtr("world"))));
1177   EXPECT_STREQ("you", a3.Perform(std::make_tuple(false, CharPtr("world"))));
1178 }
1179
1180 // Tests ACTION_Pn where n >= 3.
1181
1182 ACTION_P3(Plus, m, n, k) { return arg0 + m + n + k; }
1183
1184 TEST(ActionPnMacroTest, WorksFor3Parameters) {
1185   Action<double(int m, bool t)> a1 = Plus(100, 20, 3.4);
1186   EXPECT_DOUBLE_EQ(3123.4, a1.Perform(std::make_tuple(3000, true)));
1187
1188   Action<std::string(const std::string& s)> a2 = Plus("tail", "-", ">");
1189   const std::string re = "re";
1190   std::tuple<const std::string> dummy = std::make_tuple(re);
1191   EXPECT_EQ("retail->", a2.Perform(dummy));
1192 }
1193
1194 ACTION_P4(Plus, p0, p1, p2, p3) { return arg0 + p0 + p1 + p2 + p3; }
1195
1196 TEST(ActionPnMacroTest, WorksFor4Parameters) {
1197   Action<int(int)> a1 = Plus(1, 2, 3, 4);
1198   EXPECT_EQ(10 + 1 + 2 + 3 + 4, a1.Perform(std::make_tuple(10)));
1199 }
1200
1201 ACTION_P5(Plus, p0, p1, p2, p3, p4) { return arg0 + p0 + p1 + p2 + p3 + p4; }
1202
1203 TEST(ActionPnMacroTest, WorksFor5Parameters) {
1204   Action<int(int)> a1 = Plus(1, 2, 3, 4, 5);
1205   EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5, a1.Perform(std::make_tuple(10)));
1206 }
1207
1208 ACTION_P6(Plus, p0, p1, p2, p3, p4, p5) {
1209   return arg0 + p0 + p1 + p2 + p3 + p4 + p5;
1210 }
1211
1212 TEST(ActionPnMacroTest, WorksFor6Parameters) {
1213   Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6);
1214   EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6, a1.Perform(std::make_tuple(10)));
1215 }
1216
1217 ACTION_P7(Plus, p0, p1, p2, p3, p4, p5, p6) {
1218   return arg0 + p0 + p1 + p2 + p3 + p4 + p5 + p6;
1219 }
1220
1221 TEST(ActionPnMacroTest, WorksFor7Parameters) {
1222   Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6, 7);
1223   EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7, a1.Perform(std::make_tuple(10)));
1224 }
1225
1226 ACTION_P8(Plus, p0, p1, p2, p3, p4, p5, p6, p7) {
1227   return arg0 + p0 + p1 + p2 + p3 + p4 + p5 + p6 + p7;
1228 }
1229
1230 TEST(ActionPnMacroTest, WorksFor8Parameters) {
1231   Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6, 7, 8);
1232   EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8,
1233             a1.Perform(std::make_tuple(10)));
1234 }
1235
1236 ACTION_P9(Plus, p0, p1, p2, p3, p4, p5, p6, p7, p8) {
1237   return arg0 + p0 + p1 + p2 + p3 + p4 + p5 + p6 + p7 + p8;
1238 }
1239
1240 TEST(ActionPnMacroTest, WorksFor9Parameters) {
1241   Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6, 7, 8, 9);
1242   EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9,
1243             a1.Perform(std::make_tuple(10)));
1244 }
1245
1246 ACTION_P10(Plus, p0, p1, p2, p3, p4, p5, p6, p7, p8, last_param) {
1247   arg0_type t0 = arg0;
1248   last_param_type t9 = last_param;
1249   return t0 + p0 + p1 + p2 + p3 + p4 + p5 + p6 + p7 + p8 + t9;
1250 }
1251
1252 TEST(ActionPnMacroTest, WorksFor10Parameters) {
1253   Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
1254   EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10,
1255             a1.Perform(std::make_tuple(10)));
1256 }
1257
1258 // Tests that the action body can promote the parameter types.
1259
1260 ACTION_P2(PadArgument, prefix, suffix) {
1261   // The following lines promote the two parameters to desired types.
1262   std::string prefix_str(prefix);
1263   char suffix_char = static_cast<char>(suffix);
1264   return prefix_str + arg0 + suffix_char;
1265 }
1266
1267 TEST(ActionPnMacroTest, SimpleTypePromotion) {
1268   Action<std::string(const char*)> no_promo =
1269       PadArgument(std::string("foo"), 'r');
1270   Action<std::string(const char*)> promo =
1271       PadArgument("foo", static_cast<int>('r'));
1272   EXPECT_EQ("foobar", no_promo.Perform(std::make_tuple(CharPtr("ba"))));
1273   EXPECT_EQ("foobar", promo.Perform(std::make_tuple(CharPtr("ba"))));
1274 }
1275
1276 // Tests that we can partially restrict parameter types using a
1277 // straight-forward pattern.
1278
1279 // Defines a generic action that doesn't restrict the types of its
1280 // parameters.
1281 ACTION_P3(ConcatImpl, a, b, c) {
1282   std::stringstream ss;
1283   ss << a << b << c;
1284   return ss.str();
1285 }
1286
1287 // Next, we try to restrict that either the first parameter is a
1288 // string, or the second parameter is an int.
1289
1290 // Defines a partially specialized wrapper that restricts the first
1291 // parameter to std::string.
1292 template <typename T1, typename T2>
1293 // ConcatImplActionP3 is the class template ACTION_P3 uses to
1294 // implement ConcatImpl.  We shouldn't change the name as this
1295 // pattern requires the user to use it directly.
1296 ConcatImplActionP3<std::string, T1, T2> Concat(const std::string& a, T1 b,
1297                                                T2 c) {
1298   GTEST_INTENTIONAL_CONST_COND_PUSH_()
1299   if (true) {
1300     GTEST_INTENTIONAL_CONST_COND_POP_()
1301     // This branch verifies that ConcatImpl() can be invoked without
1302     // explicit template arguments.
1303     return ConcatImpl(a, b, c);
1304   } else {
1305     // This branch verifies that ConcatImpl() can also be invoked with
1306     // explicit template arguments.  It doesn't really need to be
1307     // executed as this is a compile-time verification.
1308     return ConcatImpl<std::string, T1, T2>(a, b, c);
1309   }
1310 }
1311
1312 // Defines another partially specialized wrapper that restricts the
1313 // second parameter to int.
1314 template <typename T1, typename T2>
1315 ConcatImplActionP3<T1, int, T2> Concat(T1 a, int b, T2 c) {
1316   return ConcatImpl(a, b, c);
1317 }
1318
1319 TEST(ActionPnMacroTest, CanPartiallyRestrictParameterTypes) {
1320   Action<const std::string()> a1 = Concat("Hello", "1", 2);
1321   EXPECT_EQ("Hello12", a1.Perform(std::make_tuple()));
1322
1323   a1 = Concat(1, 2, 3);
1324   EXPECT_EQ("123", a1.Perform(std::make_tuple()));
1325 }
1326
1327 // Verifies the type of an ACTION*.
1328
1329 ACTION(DoFoo) {}
1330 ACTION_P(DoFoo, p) {}
1331 ACTION_P2(DoFoo, p0, p1) {}
1332
1333 TEST(ActionPnMacroTest, TypesAreCorrect) {
1334   // DoFoo() must be assignable to a DoFooAction variable.
1335   DoFooAction a0 = DoFoo();
1336
1337   // DoFoo(1) must be assignable to a DoFooActionP variable.
1338   DoFooActionP<int> a1 = DoFoo(1);
1339
1340   // DoFoo(p1, ..., pk) must be assignable to a DoFooActionPk
1341   // variable, and so on.
1342   DoFooActionP2<int, char> a2 = DoFoo(1, '2');
1343   PlusActionP3<int, int, char> a3 = Plus(1, 2, '3');
1344   PlusActionP4<int, int, int, char> a4 = Plus(1, 2, 3, '4');
1345   PlusActionP5<int, int, int, int, char> a5 = Plus(1, 2, 3, 4, '5');
1346   PlusActionP6<int, int, int, int, int, char> a6 = Plus(1, 2, 3, 4, 5, '6');
1347   PlusActionP7<int, int, int, int, int, int, char> a7 =
1348       Plus(1, 2, 3, 4, 5, 6, '7');
1349   PlusActionP8<int, int, int, int, int, int, int, char> a8 =
1350       Plus(1, 2, 3, 4, 5, 6, 7, '8');
1351   PlusActionP9<int, int, int, int, int, int, int, int, char> a9 =
1352       Plus(1, 2, 3, 4, 5, 6, 7, 8, '9');
1353   PlusActionP10<int, int, int, int, int, int, int, int, int, char> a10 =
1354       Plus(1, 2, 3, 4, 5, 6, 7, 8, 9, '0');
1355
1356   // Avoid "unused variable" warnings.
1357   (void)a0;
1358   (void)a1;
1359   (void)a2;
1360   (void)a3;
1361   (void)a4;
1362   (void)a5;
1363   (void)a6;
1364   (void)a7;
1365   (void)a8;
1366   (void)a9;
1367   (void)a10;
1368 }
1369
1370 // Tests that an ACTION_P*() action can be explicitly instantiated
1371 // with reference-typed parameters.
1372
1373 ACTION_P(Plus1, x) { return x; }
1374 ACTION_P2(Plus2, x, y) { return x + y; }
1375 ACTION_P3(Plus3, x, y, z) { return x + y + z; }
1376 ACTION_P10(Plus10, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9) {
1377   return a0 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9;
1378 }
1379
1380 TEST(ActionPnMacroTest, CanExplicitlyInstantiateWithReferenceTypes) {
1381   int x = 1, y = 2, z = 3;
1382   const std::tuple<> empty = std::make_tuple();
1383
1384   Action<int()> a = Plus1<int&>(x);
1385   EXPECT_EQ(1, a.Perform(empty));
1386
1387   a = Plus2<const int&, int&>(x, y);
1388   EXPECT_EQ(3, a.Perform(empty));
1389
1390   a = Plus3<int&, const int&, int&>(x, y, z);
1391   EXPECT_EQ(6, a.Perform(empty));
1392
1393   int n[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
1394   a = Plus10<const int&, int&, const int&, int&, const int&, int&, const int&,
1395              int&, const int&, int&>(n[0], n[1], n[2], n[3], n[4], n[5], n[6],
1396                                      n[7], n[8], n[9]);
1397   EXPECT_EQ(55, a.Perform(empty));
1398 }
1399
1400 class TenArgConstructorClass {
1401  public:
1402   TenArgConstructorClass(int a1, int a2, int a3, int a4, int a5, int a6, int a7,
1403                          int a8, int a9, int a10)
1404       : value_(a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10) {}
1405   int value_;
1406 };
1407
1408 // Tests that ACTION_TEMPLATE works when there is no value parameter.
1409 ACTION_TEMPLATE(CreateNew, HAS_1_TEMPLATE_PARAMS(typename, T),
1410                 AND_0_VALUE_PARAMS()) {
1411   return new T;
1412 }
1413
1414 TEST(ActionTemplateTest, WorksWithoutValueParam) {
1415   const Action<int*()> a = CreateNew<int>();
1416   int* p = a.Perform(std::make_tuple());
1417   delete p;
1418 }
1419
1420 // Tests that ACTION_TEMPLATE works when there are value parameters.
1421 ACTION_TEMPLATE(CreateNew, HAS_1_TEMPLATE_PARAMS(typename, T),
1422                 AND_1_VALUE_PARAMS(a0)) {
1423   return new T(a0);
1424 }
1425
1426 TEST(ActionTemplateTest, WorksWithValueParams) {
1427   const Action<int*()> a = CreateNew<int>(42);
1428   int* p = a.Perform(std::make_tuple());
1429   EXPECT_EQ(42, *p);
1430   delete p;
1431 }
1432
1433 // Tests that ACTION_TEMPLATE works for integral template parameters.
1434 ACTION_TEMPLATE(MyDeleteArg, HAS_1_TEMPLATE_PARAMS(int, k),
1435                 AND_0_VALUE_PARAMS()) {
1436   delete std::get<k>(args);
1437 }
1438
1439 // Resets a bool variable in the destructor.
1440 class BoolResetter {
1441  public:
1442   explicit BoolResetter(bool* value) : value_(value) {}
1443   ~BoolResetter() { *value_ = false; }
1444
1445  private:
1446   bool* value_;
1447 };
1448
1449 TEST(ActionTemplateTest, WorksForIntegralTemplateParams) {
1450   const Action<void(int*, BoolResetter*)> a = MyDeleteArg<1>();
1451   int n = 0;
1452   bool b = true;
1453   auto* resetter = new BoolResetter(&b);
1454   a.Perform(std::make_tuple(&n, resetter));
1455   EXPECT_FALSE(b);  // Verifies that resetter is deleted.
1456 }
1457
1458 // Tests that ACTION_TEMPLATES works for template template parameters.
1459 ACTION_TEMPLATE(ReturnSmartPointer,
1460                 HAS_1_TEMPLATE_PARAMS(template <typename Pointee> class,
1461                                       Pointer),
1462                 AND_1_VALUE_PARAMS(pointee)) {
1463   return Pointer<pointee_type>(new pointee_type(pointee));
1464 }
1465
1466 TEST(ActionTemplateTest, WorksForTemplateTemplateParameters) {
1467   const Action<std::shared_ptr<int>()> a =
1468       ReturnSmartPointer<std::shared_ptr>(42);
1469   std::shared_ptr<int> p = a.Perform(std::make_tuple());
1470   EXPECT_EQ(42, *p);
1471 }
1472
1473 // Tests that ACTION_TEMPLATE works for 10 template parameters.
1474 template <typename T1, typename T2, typename T3, int k4, bool k5,
1475           unsigned int k6, typename T7, typename T8, typename T9>
1476 struct GiantTemplate {
1477  public:
1478   explicit GiantTemplate(int a_value) : value(a_value) {}
1479   int value;
1480 };
1481
1482 ACTION_TEMPLATE(ReturnGiant,
1483                 HAS_10_TEMPLATE_PARAMS(typename, T1, typename, T2, typename, T3,
1484                                        int, k4, bool, k5, unsigned int, k6,
1485                                        class, T7, class, T8, class, T9,
1486                                        template <typename T> class, T10),
1487                 AND_1_VALUE_PARAMS(value)) {
1488   return GiantTemplate<T10<T1>, T2, T3, k4, k5, k6, T7, T8, T9>(value);
1489 }
1490
1491 TEST(ActionTemplateTest, WorksFor10TemplateParameters) {
1492   using Giant = GiantTemplate<std::shared_ptr<int>, bool, double, 5, true, 6,
1493                               char, unsigned, int>;
1494   const Action<Giant()> a = ReturnGiant<int, bool, double, 5, true, 6, char,
1495                                         unsigned, int, std::shared_ptr>(42);
1496   Giant giant = a.Perform(std::make_tuple());
1497   EXPECT_EQ(42, giant.value);
1498 }
1499
1500 // Tests that ACTION_TEMPLATE works for 10 value parameters.
1501 ACTION_TEMPLATE(ReturnSum, HAS_1_TEMPLATE_PARAMS(typename, Number),
1502                 AND_10_VALUE_PARAMS(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10)) {
1503   return static_cast<Number>(v1) + v2 + v3 + v4 + v5 + v6 + v7 + v8 + v9 + v10;
1504 }
1505
1506 TEST(ActionTemplateTest, WorksFor10ValueParameters) {
1507   const Action<int()> a = ReturnSum<int>(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
1508   EXPECT_EQ(55, a.Perform(std::make_tuple()));
1509 }
1510
1511 // Tests that ACTION_TEMPLATE and ACTION/ACTION_P* can be overloaded
1512 // on the number of value parameters.
1513
1514 ACTION(ReturnSum) { return 0; }
1515
1516 ACTION_P(ReturnSum, x) { return x; }
1517
1518 ACTION_TEMPLATE(ReturnSum, HAS_1_TEMPLATE_PARAMS(typename, Number),
1519                 AND_2_VALUE_PARAMS(v1, v2)) {
1520   return static_cast<Number>(v1) + v2;
1521 }
1522
1523 ACTION_TEMPLATE(ReturnSum, HAS_1_TEMPLATE_PARAMS(typename, Number),
1524                 AND_3_VALUE_PARAMS(v1, v2, v3)) {
1525   return static_cast<Number>(v1) + v2 + v3;
1526 }
1527
1528 ACTION_TEMPLATE(ReturnSum, HAS_2_TEMPLATE_PARAMS(typename, Number, int, k),
1529                 AND_4_VALUE_PARAMS(v1, v2, v3, v4)) {
1530   return static_cast<Number>(v1) + v2 + v3 + v4 + k;
1531 }
1532
1533 TEST(ActionTemplateTest, CanBeOverloadedOnNumberOfValueParameters) {
1534   const Action<int()> a0 = ReturnSum();
1535   const Action<int()> a1 = ReturnSum(1);
1536   const Action<int()> a2 = ReturnSum<int>(1, 2);
1537   const Action<int()> a3 = ReturnSum<int>(1, 2, 3);
1538   const Action<int()> a4 = ReturnSum<int, 10000>(2000, 300, 40, 5);
1539   EXPECT_EQ(0, a0.Perform(std::make_tuple()));
1540   EXPECT_EQ(1, a1.Perform(std::make_tuple()));
1541   EXPECT_EQ(3, a2.Perform(std::make_tuple()));
1542   EXPECT_EQ(6, a3.Perform(std::make_tuple()));
1543   EXPECT_EQ(12345, a4.Perform(std::make_tuple()));
1544 }
1545
1546 }  // namespace gmock_more_actions_test
1547 }  // namespace testing