ceph/src/jaegertracing/opentelemetry-cpp/third_party/googletest/googlemock/scripts/generator/cpp/gmock_class_test.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2009 Neal Norwitz All Rights Reserved.
   4 # Portions Copyright 2009 Google Inc. All Rights Reserved.
   5 #
   6 # Licensed under the Apache License, Version 2.0 (the "License");
   7 # you may not use this file except in compliance with the License.
   8 # You may obtain a copy of the License at
   9 #
  10 #      http://www.apache.org/licenses/LICENSE-2.0
  11 #
  12 # Unless required by applicable law or agreed to in writing, software
  13 # distributed under the License is distributed on an "AS IS" BASIS,
  14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15 # See the License for the specific language governing permissions and
  16 # limitations under the License.
  17
  18 """Tests for gmock.scripts.generator.cpp.gmock_class."""
  19
  20 import os
  21 import sys
  22 import unittest
  23
  24 # Allow the cpp imports below to work when run as a standalone script.
  25 sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
  26
  27 from cpp import ast
  28 from cpp import gmock_class
  29
  30
  31 class TestCase(unittest.TestCase):
  32   """Helper class that adds assert methods."""
  33
  34   @staticmethod
  35   def StripLeadingWhitespace(lines):
  36     """Strip leading whitespace in each line in 'lines'."""
  37     return '\n'.join([s.lstrip() for s in lines.split('\n')])
  38
  39   def assertEqualIgnoreLeadingWhitespace(self, expected_lines, lines):
  40     """Specialized assert that ignores the indent level."""
  41     self.assertEqual(expected_lines, self.StripLeadingWhitespace(lines))
  42
  43
  44 class GenerateMethodsTest(TestCase):
  45
  46   @staticmethod
  47   def GenerateMethodSource(cpp_source):
  48     """Convert C++ source to Google Mock output source lines."""
  49     method_source_lines = []
  50     # <test> is a pseudo-filename, it is not read or written.
  51     builder = ast.BuilderFromSource(cpp_source, '<test>')
  52     ast_list = list(builder.Generate())
  53     gmock_class._GenerateMethods(method_source_lines, cpp_source, ast_list[0])
  54     return '\n'.join(method_source_lines)
  55
  56   def testSimpleMethod(self):
  57     source = """
  58 class Foo {
  59  public:
  60   virtual int Bar();
  61 };
  62 """
  63     self.assertEqualIgnoreLeadingWhitespace(
  64         'MOCK_METHOD(int, Bar, (), (override));',
  65         self.GenerateMethodSource(source))
  66
  67   def testSimpleConstructorsAndDestructor(self):
  68     source = """
  69 class Foo {
  70  public:
  71   Foo();
  72   Foo(int x);
  73   Foo(const Foo& f);
  74   Foo(Foo&& f);
  75   ~Foo();
  76   virtual int Bar() = 0;
  77 };
  78 """
  79     # The constructors and destructor should be ignored.
  80     self.assertEqualIgnoreLeadingWhitespace(
  81         'MOCK_METHOD(int, Bar, (), (override));',
  82         self.GenerateMethodSource(source))
  83
  84   def testVirtualDestructor(self):
  85     source = """
  86 class Foo {
  87  public:
  88   virtual ~Foo();
  89   virtual int Bar() = 0;
  90 };
  91 """
  92     # The destructor should be ignored.
  93     self.assertEqualIgnoreLeadingWhitespace(
  94         'MOCK_METHOD(int, Bar, (), (override));',
  95         self.GenerateMethodSource(source))
  96
  97   def testExplicitlyDefaultedConstructorsAndDestructor(self):
  98     source = """
  99 class Foo {
 100  public:
 101   Foo() = default;
 102   Foo(const Foo& f) = default;
 103   Foo(Foo&& f) = default;
 104   ~Foo() = default;
 105   virtual int Bar() = 0;
 106 };
 107 """
 108     # The constructors and destructor should be ignored.
 109     self.assertEqualIgnoreLeadingWhitespace(
 110         'MOCK_METHOD(int, Bar, (), (override));',
 111         self.GenerateMethodSource(source))
 112
 113   def testExplicitlyDeletedConstructorsAndDestructor(self):
 114     source = """
 115 class Foo {
 116  public:
 117   Foo() = delete;
 118   Foo(const Foo& f) = delete;
 119   Foo(Foo&& f) = delete;
 120   ~Foo() = delete;
 121   virtual int Bar() = 0;
 122 };
 123 """
 124     # The constructors and destructor should be ignored.
 125     self.assertEqualIgnoreLeadingWhitespace(
 126         'MOCK_METHOD(int, Bar, (), (override));',
 127         self.GenerateMethodSource(source))
 128
 129   def testSimpleOverrideMethod(self):
 130     source = """
 131 class Foo {
 132  public:
 133   int Bar() override;
 134 };
 135 """
 136     self.assertEqualIgnoreLeadingWhitespace(
 137         'MOCK_METHOD(int, Bar, (), (override));',
 138         self.GenerateMethodSource(source))
 139
 140   def testSimpleConstMethod(self):
 141     source = """
 142 class Foo {
 143  public:
 144   virtual void Bar(bool flag) const;
 145 };
 146 """
 147     self.assertEqualIgnoreLeadingWhitespace(
 148         'MOCK_METHOD(void, Bar, (bool flag), (const, override));',
 149         self.GenerateMethodSource(source))
 150
 151   def testExplicitVoid(self):
 152     source = """
 153 class Foo {
 154  public:
 155   virtual int Bar(void);
 156 };
 157 """
 158     self.assertEqualIgnoreLeadingWhitespace(
 159         'MOCK_METHOD(int, Bar, (void), (override));',
 160         self.GenerateMethodSource(source))
 161
 162   def testStrangeNewlineInParameter(self):
 163     source = """
 164 class Foo {
 165  public:
 166   virtual void Bar(int
 167 a) = 0;
 168 };
 169 """
 170     self.assertEqualIgnoreLeadingWhitespace(
 171         'MOCK_METHOD(void, Bar, (int a), (override));',
 172         self.GenerateMethodSource(source))
 173
 174   def testDefaultParameters(self):
 175     source = """
 176 class Foo {
 177  public:
 178   virtual void Bar(int a, char c = 'x') = 0;
 179 };
 180 """
 181     self.assertEqualIgnoreLeadingWhitespace(
 182         'MOCK_METHOD(void, Bar, (int a, char c), (override));',
 183         self.GenerateMethodSource(source))
 184
 185   def testMultipleDefaultParameters(self):
 186     source = """
 187 class Foo {
 188  public:
 189   virtual void Bar(
 190         int a = 42,
 191         char c = 'x',
 192         const int* const p = nullptr,
 193         const std::string& s = "42",
 194         char tab[] = {'4','2'},
 195         int const *& rp = aDefaultPointer) = 0;
 196 };
 197 """
 198     self.assertEqualIgnoreLeadingWhitespace(
 199         'MOCK_METHOD(void, Bar, '
 200         '(int a, char c, const int* const p, const std::string& s, char tab[], int const *& rp), '
 201         '(override));', self.GenerateMethodSource(source))
 202
 203   def testMultipleSingleLineDefaultParameters(self):
 204     source = """
 205 class Foo {
 206  public:
 207   virtual void Bar(int a = 42, int b = 43, int c = 44) = 0;
 208 };
 209 """
 210     self.assertEqualIgnoreLeadingWhitespace(
 211         'MOCK_METHOD(void, Bar, (int a, int b, int c), (override));',
 212         self.GenerateMethodSource(source))
 213
 214   def testConstDefaultParameter(self):
 215     source = """
 216 class Test {
 217  public:
 218   virtual bool Bar(const int test_arg = 42) = 0;
 219 };
 220 """
 221     self.assertEqualIgnoreLeadingWhitespace(
 222         'MOCK_METHOD(bool, Bar, (const int test_arg), (override));',
 223         self.GenerateMethodSource(source))
 224
 225   def testConstRefDefaultParameter(self):
 226     source = """
 227 class Test {
 228  public:
 229   virtual bool Bar(const std::string& test_arg = "42" ) = 0;
 230 };
 231 """
 232     self.assertEqualIgnoreLeadingWhitespace(
 233         'MOCK_METHOD(bool, Bar, (const std::string& test_arg), (override));',
 234         self.GenerateMethodSource(source))
 235
 236   def testRemovesCommentsWhenDefaultsArePresent(self):
 237     source = """
 238 class Foo {
 239  public:
 240   virtual void Bar(int a = 42 /* a comment */,
 241                    char /* other comment */ c= 'x') = 0;
 242 };
 243 """
 244     self.assertEqualIgnoreLeadingWhitespace(
 245         'MOCK_METHOD(void, Bar, (int a, char c), (override));',
 246         self.GenerateMethodSource(source))
 247
 248   def testDoubleSlashCommentsInParameterListAreRemoved(self):
 249     source = """
 250 class Foo {
 251  public:
 252   virtual void Bar(int a,  // inline comments should be elided.
 253                    int b   // inline comments should be elided.
 254                    ) const = 0;
 255 };
 256 """
 257     self.assertEqualIgnoreLeadingWhitespace(
 258         'MOCK_METHOD(void, Bar, (int a, int b), (const, override));',
 259         self.GenerateMethodSource(source))
 260
 261   def testCStyleCommentsInParameterListAreNotRemoved(self):
 262     # NOTE(nnorwitz): I'm not sure if it's the best behavior to keep these
 263     # comments.  Also note that C style comments after the last parameter
 264     # are still elided.
 265     source = """
 266 class Foo {
 267  public:
 268   virtual const string& Bar(int /* keeper */, int b);
 269 };
 270 """
 271     self.assertEqualIgnoreLeadingWhitespace(
 272         'MOCK_METHOD(const string&, Bar, (int, int b), (override));',
 273         self.GenerateMethodSource(source))
 274
 275   def testArgsOfTemplateTypes(self):
 276     source = """
 277 class Foo {
 278  public:
 279   virtual int Bar(const vector<int>& v, map<int, string>* output);
 280 };"""
 281     self.assertEqualIgnoreLeadingWhitespace(
 282         'MOCK_METHOD(int, Bar, (const vector<int>& v, (map<int, string>* output)), (override));',
 283         self.GenerateMethodSource(source))
 284
 285   def testReturnTypeWithOneTemplateArg(self):
 286     source = """
 287 class Foo {
 288  public:
 289   virtual vector<int>* Bar(int n);
 290 };"""
 291     self.assertEqualIgnoreLeadingWhitespace(
 292         'MOCK_METHOD(vector<int>*, Bar, (int n), (override));',
 293         self.GenerateMethodSource(source))
 294
 295   def testReturnTypeWithManyTemplateArgs(self):
 296     source = """
 297 class Foo {
 298  public:
 299   virtual map<int, string> Bar();
 300 };"""
 301     self.assertEqualIgnoreLeadingWhitespace(
 302         'MOCK_METHOD((map<int, string>), Bar, (), (override));',
 303         self.GenerateMethodSource(source))
 304
 305   def testSimpleMethodInTemplatedClass(self):
 306     source = """
 307 template<class T>
 308 class Foo {
 309  public:
 310   virtual int Bar();
 311 };
 312 """
 313     self.assertEqualIgnoreLeadingWhitespace(
 314         'MOCK_METHOD(int, Bar, (), (override));',
 315         self.GenerateMethodSource(source))
 316
 317   def testPointerArgWithoutNames(self):
 318     source = """
 319 class Foo {
 320   virtual int Bar(C*);
 321 };
 322 """
 323     self.assertEqualIgnoreLeadingWhitespace(
 324         'MOCK_METHOD(int, Bar, (C*), (override));',
 325         self.GenerateMethodSource(source))
 326
 327   def testReferenceArgWithoutNames(self):
 328     source = """
 329 class Foo {
 330   virtual int Bar(C&);
 331 };
 332 """
 333     self.assertEqualIgnoreLeadingWhitespace(
 334         'MOCK_METHOD(int, Bar, (C&), (override));',
 335         self.GenerateMethodSource(source))
 336
 337   def testArrayArgWithoutNames(self):
 338     source = """
 339 class Foo {
 340   virtual int Bar(C[]);
 341 };
 342 """
 343     self.assertEqualIgnoreLeadingWhitespace(
 344         'MOCK_METHOD(int, Bar, (C[]), (override));',
 345         self.GenerateMethodSource(source))
 346
 347
 348 class GenerateMocksTest(TestCase):
 349
 350   @staticmethod
 351   def GenerateMocks(cpp_source):
 352     """Convert C++ source to complete Google Mock output source."""
 353     # <test> is a pseudo-filename, it is not read or written.
 354     filename = '<test>'
 355     builder = ast.BuilderFromSource(cpp_source, filename)
 356     ast_list = list(builder.Generate())
 357     lines = gmock_class._GenerateMocks(filename, cpp_source, ast_list, None)
 358     return '\n'.join(lines)
 359
 360   def testNamespaces(self):
 361     source = """
 362 namespace Foo {
 363 namespace Bar { class Forward; }
 364 namespace Baz::Qux {
 365
 366 class Test {
 367  public:
 368   virtual void Foo();
 369 };
 370
 371 }  // namespace Baz::Qux
 372 }  // namespace Foo
 373 """
 374     expected = """\
 375 namespace Foo {
 376 namespace Baz::Qux {
 377
 378 class MockTest : public Test {
 379 public:
 380 MOCK_METHOD(void, Foo, (), (override));
 381 };
 382
 383 }  // namespace Baz::Qux
 384 }  // namespace Foo
 385 """
 386     self.assertEqualIgnoreLeadingWhitespace(expected,
 387                                             self.GenerateMocks(source))
 388
 389   def testClassWithStorageSpecifierMacro(self):
 390     source = """
 391 class STORAGE_SPECIFIER Test {
 392  public:
 393   virtual void Foo();
 394 };
 395 """
 396     expected = """\
 397 class MockTest : public Test {
 398 public:
 399 MOCK_METHOD(void, Foo, (), (override));
 400 };
 401 """
 402     self.assertEqualIgnoreLeadingWhitespace(expected,
 403                                             self.GenerateMocks(source))
 404
 405   def testTemplatedForwardDeclaration(self):
 406     source = """
 407 template <class T> class Forward;  // Forward declaration should be ignored.
 408 class Test {
 409  public:
 410   virtual void Foo();
 411 };
 412 """
 413     expected = """\
 414 class MockTest : public Test {
 415 public:
 416 MOCK_METHOD(void, Foo, (), (override));
 417 };
 418 """
 419     self.assertEqualIgnoreLeadingWhitespace(expected,
 420                                             self.GenerateMocks(source))
 421
 422   def testTemplatedClass(self):
 423     source = """
 424 template <typename S, typename T>
 425 class Test {
 426  public:
 427   virtual void Foo();
 428 };
 429 """
 430     expected = """\
 431 template <typename T0, typename T1>
 432 class MockTest : public Test<T0, T1> {
 433 public:
 434 MOCK_METHOD(void, Foo, (), (override));
 435 };
 436 """
 437     self.assertEqualIgnoreLeadingWhitespace(expected,
 438                                             self.GenerateMocks(source))
 439
 440   def testTemplateInATemplateTypedef(self):
 441     source = """
 442 class Test {
 443  public:
 444   typedef std::vector<std::list<int>> FooType;
 445   virtual void Bar(const FooType& test_arg);
 446 };
 447 """
 448     expected = """\
 449 class MockTest : public Test {
 450 public:
 451 MOCK_METHOD(void, Bar, (const FooType& test_arg), (override));
 452 };
 453 """
 454     self.assertEqualIgnoreLeadingWhitespace(expected,
 455                                             self.GenerateMocks(source))
 456
 457   def testTemplateInATemplateTypedefWithComma(self):
 458     source = """
 459 class Test {
 460  public:
 461   typedef std::function<void(
 462       const vector<std::list<int>>&, int> FooType;
 463   virtual void Bar(const FooType& test_arg);
 464 };
 465 """
 466     expected = """\
 467 class MockTest : public Test {
 468 public:
 469 MOCK_METHOD(void, Bar, (const FooType& test_arg), (override));
 470 };
 471 """
 472     self.assertEqualIgnoreLeadingWhitespace(expected,
 473                                             self.GenerateMocks(source))
 474
 475   def testParenthesizedCommaInArg(self):
 476     source = """
 477 class Test {
 478  public:
 479    virtual void Bar(std::function<void(int, int)> f);
 480 };
 481 """
 482     expected = """\
 483 class MockTest : public Test {
 484 public:
 485 MOCK_METHOD(void, Bar, (std::function<void(int, int)> f), (override));
 486 };
 487 """
 488     self.assertEqualIgnoreLeadingWhitespace(expected,
 489                                             self.GenerateMocks(source))
 490
 491   def testEnumType(self):
 492     source = """
 493 class Test {
 494  public:
 495   enum Bar {
 496     BAZ, QUX, QUUX, QUUUX
 497   };
 498   virtual void Foo();
 499 };
 500 """
 501     expected = """\
 502 class MockTest : public Test {
 503 public:
 504 MOCK_METHOD(void, Foo, (), (override));
 505 };
 506 """
 507     self.assertEqualIgnoreLeadingWhitespace(expected,
 508                                             self.GenerateMocks(source))
 509
 510   def testEnumClassType(self):
 511     source = """
 512 class Test {
 513  public:
 514   enum class Bar {
 515     BAZ, QUX, QUUX, QUUUX
 516   };
 517   virtual void Foo();
 518 };
 519 """
 520     expected = """\
 521 class MockTest : public Test {
 522 public:
 523 MOCK_METHOD(void, Foo, (), (override));
 524 };
 525 """
 526     self.assertEqualIgnoreLeadingWhitespace(expected,
 527                                             self.GenerateMocks(source))
 528
 529   def testStdFunction(self):
 530     source = """
 531 class Test {
 532  public:
 533   Test(std::function<int(std::string)> foo) : foo_(foo) {}
 534
 535   virtual std::function<int(std::string)> foo();
 536
 537  private:
 538   std::function<int(std::string)> foo_;
 539 };
 540 """
 541     expected = """\
 542 class MockTest : public Test {
 543 public:
 544 MOCK_METHOD(std::function<int (std::string)>, foo, (), (override));
 545 };
 546 """
 547     self.assertEqualIgnoreLeadingWhitespace(expected,
 548                                             self.GenerateMocks(source))
 549
 550
 551 if __name__ == '__main__':
 552   unittest.main()