ceph/src/s3select/rapidjson/thirdparty/gtest/googletest/scripts/gen_gtest_pred_impl.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2006, Google Inc.
   4 # All rights reserved.
   5 #
   6 # Redistribution and use in source and binary forms, with or without
   7 # modification, are permitted provided that the following conditions are
   8 # met:
   9 #
  10 #     * Redistributions of source code must retain the above copyright
  11 # notice, this list of conditions and the following disclaimer.
  12 #     * Redistributions in binary form must reproduce the above
  13 # copyright notice, this list of conditions and the following disclaimer
  14 # in the documentation and/or other materials provided with the
  15 # distribution.
  16 #     * Neither the name of Google Inc. nor the names of its
  17 # contributors may be used to endorse or promote products derived from
  18 # this software without specific prior written permission.
  19 #
  20 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31
  32 """gen_gtest_pred_impl.py v0.1
  33
  34 Generates the implementation of Google Test predicate assertions and
  35 accompanying tests.
  36
  37 Usage:
  38
  39   gen_gtest_pred_impl.py MAX_ARITY
  40
  41 where MAX_ARITY is a positive integer.
  42
  43 The command generates the implementation of up-to MAX_ARITY-ary
  44 predicate assertions, and writes it to file gtest_pred_impl.h in the
  45 directory where the script is.  It also generates the accompanying
  46 unit test in file gtest_pred_impl_unittest.cc.
  47 """
  48
  49 __author__ = 'wan@google.com (Zhanyong Wan)'
  50
  51 import os
  52 import sys
  53 import time
  54
  55 # Where this script is.
  56 SCRIPT_DIR = os.path.dirname(sys.argv[0])
  57
  58 # Where to store the generated header.
  59 HEADER = os.path.join(SCRIPT_DIR, '../include/gtest/gtest_pred_impl.h')
  60
  61 # Where to store the generated unit test.
  62 UNIT_TEST = os.path.join(SCRIPT_DIR, '../test/gtest_pred_impl_unittest.cc')
  63
  64
  65 def HeaderPreamble(n):
  66   """Returns the preamble for the header file.
  67
  68   Args:
  69     n:  the maximum arity of the predicate macros to be generated.
  70   """
  71
  72   # A map that defines the values used in the preamble template.
  73   DEFS = {
  74     'today' : time.strftime('%m/%d/%Y'),
  75     'year' : time.strftime('%Y'),
  76     'command' : '%s %s' % (os.path.basename(sys.argv[0]), n),
  77     'n' : n
  78     }
  79
  80   return (
  81 """// Copyright 2006, Google Inc.
  82 // All rights reserved.
  83 //
  84 // Redistribution and use in source and binary forms, with or without
  85 // modification, are permitted provided that the following conditions are
  86 // met:
  87 //
  88 //     * Redistributions of source code must retain the above copyright
  89 // notice, this list of conditions and the following disclaimer.
  90 //     * Redistributions in binary form must reproduce the above
  91 // copyright notice, this list of conditions and the following disclaimer
  92 // in the documentation and/or other materials provided with the
  93 // distribution.
  94 //     * Neither the name of Google Inc. nor the names of its
  95 // contributors may be used to endorse or promote products derived from
  96 // this software without specific prior written permission.
  97 //
  98 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  99 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 100 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 101 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 102 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 103 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 104 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 105 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 106 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 107 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 108 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 109
 110 // This file is AUTOMATICALLY GENERATED on %(today)s by command
 111 // '%(command)s'.  DO NOT EDIT BY HAND!
 112 //
 113 // Implements a family of generic predicate assertion macros.
 114
 115 #ifndef GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
 116 #define GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
 117
 118 #include "gtest/gtest.h"
 119
 120 namespace testing {
 121
 122 // This header implements a family of generic predicate assertion
 123 // macros:
 124 //
 125 //   ASSERT_PRED_FORMAT1(pred_format, v1)
 126 //   ASSERT_PRED_FORMAT2(pred_format, v1, v2)
 127 //   ...
 128 //
 129 // where pred_format is a function or functor that takes n (in the
 130 // case of ASSERT_PRED_FORMATn) values and their source expression
 131 // text, and returns a testing::AssertionResult.  See the definition
 132 // of ASSERT_EQ in gtest.h for an example.
 133 //
 134 // If you don't care about formatting, you can use the more
 135 // restrictive version:
 136 //
 137 //   ASSERT_PRED1(pred, v1)
 138 //   ASSERT_PRED2(pred, v1, v2)
 139 //   ...
 140 //
 141 // where pred is an n-ary function or functor that returns bool,
 142 // and the values v1, v2, ..., must support the << operator for
 143 // streaming to std::ostream.
 144 //
 145 // We also define the EXPECT_* variations.
 146 //
 147 // For now we only support predicates whose arity is at most %(n)s.
 148 // Please email googletestframework@googlegroups.com if you need
 149 // support for higher arities.
 150
 151 // GTEST_ASSERT_ is the basic statement to which all of the assertions
 152 // in this file reduce.  Don't use this in your code.
 153
 154 #define GTEST_ASSERT_(expression, on_failure) \\
 155   GTEST_AMBIGUOUS_ELSE_BLOCKER_ \\
 156   if (const ::testing::AssertionResult gtest_ar = (expression)) \\
 157     ; \\
 158   else \\
 159     on_failure(gtest_ar.failure_message())
 160 """ % DEFS)
 161
 162
 163 def Arity(n):
 164   """Returns the English name of the given arity."""
 165
 166   if n < 0:
 167     return None
 168   elif n <= 3:
 169     return ['nullary', 'unary', 'binary', 'ternary'][n]
 170   else:
 171     return '%s-ary' % n
 172
 173
 174 def Title(word):
 175   """Returns the given word in title case.  The difference between
 176   this and string's title() method is that Title('4-ary') is '4-ary'
 177   while '4-ary'.title() is '4-Ary'."""
 178
 179   return word[0].upper() + word[1:]
 180
 181
 182 def OneTo(n):
 183   """Returns the list [1, 2, 3, ..., n]."""
 184
 185   return range(1, n + 1)
 186
 187
 188 def Iter(n, format, sep=''):
 189   """Given a positive integer n, a format string that contains 0 or
 190   more '%s' format specs, and optionally a separator string, returns
 191   the join of n strings, each formatted with the format string on an
 192   iterator ranged from 1 to n.
 193
 194   Example:
 195
 196   Iter(3, 'v%s', sep=', ') returns 'v1, v2, v3'.
 197   """
 198
 199   # How many '%s' specs are in format?
 200   spec_count = len(format.split('%s')) - 1
 201   return sep.join([format % (spec_count * (i,)) for i in OneTo(n)])
 202
 203
 204 def ImplementationForArity(n):
 205   """Returns the implementation of n-ary predicate assertions."""
 206
 207   # A map the defines the values used in the implementation template.
 208   DEFS = {
 209     'n' : str(n),
 210     'vs' : Iter(n, 'v%s', sep=', '),
 211     'vts' : Iter(n, '#v%s', sep=', '),
 212     'arity' : Arity(n),
 213     'Arity' : Title(Arity(n))
 214     }
 215
 216   impl = """
 217
 218 // Helper function for implementing {EXPECT|ASSERT}_PRED%(n)s.  Don't use
 219 // this in your code.
 220 template <typename Pred""" % DEFS
 221
 222   impl += Iter(n, """,
 223           typename T%s""")
 224
 225   impl += """>
 226 AssertionResult AssertPred%(n)sHelper(const char* pred_text""" % DEFS
 227
 228   impl += Iter(n, """,
 229                                   const char* e%s""")
 230
 231   impl += """,
 232                                   Pred pred"""
 233
 234   impl += Iter(n, """,
 235                                   const T%s& v%s""")
 236
 237   impl += """) {
 238   if (pred(%(vs)s)) return AssertionSuccess();
 239
 240 """ % DEFS
 241
 242   impl += '  return AssertionFailure() << pred_text << "("'
 243
 244   impl += Iter(n, """
 245                             << e%s""", sep=' << ", "')
 246
 247   impl += ' << ") evaluates to false, where"'
 248
 249   impl += Iter(n, """
 250                             << "\\n" << e%s << " evaluates to " << v%s""")
 251
 252   impl += """;
 253 }
 254
 255 // Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT%(n)s.
 256 // Don't use this in your code.
 257 #define GTEST_PRED_FORMAT%(n)s_(pred_format, %(vs)s, on_failure)\\
 258   GTEST_ASSERT_(pred_format(%(vts)s, %(vs)s), \\
 259                 on_failure)
 260
 261 // Internal macro for implementing {EXPECT|ASSERT}_PRED%(n)s.  Don't use
 262 // this in your code.
 263 #define GTEST_PRED%(n)s_(pred, %(vs)s, on_failure)\\
 264   GTEST_ASSERT_(::testing::AssertPred%(n)sHelper(#pred""" % DEFS
 265
 266   impl += Iter(n, """, \\
 267                                              #v%s""")
 268
 269   impl += """, \\
 270                                              pred"""
 271
 272   impl += Iter(n, """, \\
 273                                              v%s""")
 274
 275   impl += """), on_failure)
 276
 277 // %(Arity)s predicate assertion macros.
 278 #define EXPECT_PRED_FORMAT%(n)s(pred_format, %(vs)s) \\
 279   GTEST_PRED_FORMAT%(n)s_(pred_format, %(vs)s, GTEST_NONFATAL_FAILURE_)
 280 #define EXPECT_PRED%(n)s(pred, %(vs)s) \\
 281   GTEST_PRED%(n)s_(pred, %(vs)s, GTEST_NONFATAL_FAILURE_)
 282 #define ASSERT_PRED_FORMAT%(n)s(pred_format, %(vs)s) \\
 283   GTEST_PRED_FORMAT%(n)s_(pred_format, %(vs)s, GTEST_FATAL_FAILURE_)
 284 #define ASSERT_PRED%(n)s(pred, %(vs)s) \\
 285   GTEST_PRED%(n)s_(pred, %(vs)s, GTEST_FATAL_FAILURE_)
 286
 287 """ % DEFS
 288
 289   return impl
 290
 291
 292 def HeaderPostamble():
 293   """Returns the postamble for the header file."""
 294
 295   return """
 296
 297 }  // namespace testing
 298
 299 #endif  // GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
 300 """
 301
 302
 303 def GenerateFile(path, content):
 304   """Given a file path and a content string
 305      overwrites it with the given content.
 306   """
 307   print 'Updating file %s . . .' % path
 308   f = file(path, 'w+')
 309   print >>f, content,
 310   f.close()
 311
 312   print 'File %s has been updated.' % path
 313
 314
 315 def GenerateHeader(n):
 316   """Given the maximum arity n, updates the header file that implements
 317   the predicate assertions.
 318   """
 319   GenerateFile(HEADER,
 320                HeaderPreamble(n)
 321                + ''.join([ImplementationForArity(i) for i in OneTo(n)])
 322                + HeaderPostamble())
 323
 324
 325 def UnitTestPreamble():
 326   """Returns the preamble for the unit test file."""
 327
 328   # A map that defines the values used in the preamble template.
 329   DEFS = {
 330     'today' : time.strftime('%m/%d/%Y'),
 331     'year' : time.strftime('%Y'),
 332     'command' : '%s %s' % (os.path.basename(sys.argv[0]), sys.argv[1]),
 333     }
 334
 335   return (
 336 """// Copyright 2006, Google Inc.
 337 // All rights reserved.
 338 //
 339 // Redistribution and use in source and binary forms, with or without
 340 // modification, are permitted provided that the following conditions are
 341 // met:
 342 //
 343 //     * Redistributions of source code must retain the above copyright
 344 // notice, this list of conditions and the following disclaimer.
 345 //     * Redistributions in binary form must reproduce the above
 346 // copyright notice, this list of conditions and the following disclaimer
 347 // in the documentation and/or other materials provided with the
 348 // distribution.
 349 //     * Neither the name of Google Inc. nor the names of its
 350 // contributors may be used to endorse or promote products derived from
 351 // this software without specific prior written permission.
 352 //
 353 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 354 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 355 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 356 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 357 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 358 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 359 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 360 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 361 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 362 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 363 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 364
 365 // This file is AUTOMATICALLY GENERATED on %(today)s by command
 366 // '%(command)s'.  DO NOT EDIT BY HAND!
 367
 368 // Regression test for gtest_pred_impl.h
 369 //
 370 // This file is generated by a script and quite long.  If you intend to
 371 // learn how Google Test works by reading its unit tests, read
 372 // gtest_unittest.cc instead.
 373 //
 374 // This is intended as a regression test for the Google Test predicate
 375 // assertions.  We compile it as part of the gtest_unittest target
 376 // only to keep the implementation tidy and compact, as it is quite
 377 // involved to set up the stage for testing Google Test using Google
 378 // Test itself.
 379 //
 380 // Currently, gtest_unittest takes ~11 seconds to run in the testing
 381 // daemon.  In the future, if it grows too large and needs much more
 382 // time to finish, we should consider separating this file into a
 383 // stand-alone regression test.
 384
 385 #include <iostream>
 386
 387 #include "gtest/gtest.h"
 388 #include "gtest/gtest-spi.h"
 389
 390 // A user-defined data type.
 391 struct Bool {
 392   explicit Bool(int val) : value(val != 0) {}
 393
 394   bool operator>(int n) const { return value > Bool(n).value; }
 395
 396   Bool operator+(const Bool& rhs) const { return Bool(value + rhs.value); }
 397
 398   bool operator==(const Bool& rhs) const { return value == rhs.value; }
 399
 400   bool value;
 401 };
 402
 403 // Enables Bool to be used in assertions.
 404 std::ostream& operator<<(std::ostream& os, const Bool& x) {
 405   return os << (x.value ? "true" : "false");
 406 }
 407
 408 """ % DEFS)
 409
 410
 411 def TestsForArity(n):
 412   """Returns the tests for n-ary predicate assertions."""
 413
 414   # A map that defines the values used in the template for the tests.
 415   DEFS = {
 416     'n' : n,
 417     'es' : Iter(n, 'e%s', sep=', '),
 418     'vs' : Iter(n, 'v%s', sep=', '),
 419     'vts' : Iter(n, '#v%s', sep=', '),
 420     'tvs' : Iter(n, 'T%s v%s', sep=', '),
 421     'int_vs' : Iter(n, 'int v%s', sep=', '),
 422     'Bool_vs' : Iter(n, 'Bool v%s', sep=', '),
 423     'types' : Iter(n, 'typename T%s', sep=', '),
 424     'v_sum' : Iter(n, 'v%s', sep=' + '),
 425     'arity' : Arity(n),
 426     'Arity' : Title(Arity(n)),
 427     }
 428
 429   tests = (
 430 """// Sample functions/functors for testing %(arity)s predicate assertions.
 431
 432 // A %(arity)s predicate function.
 433 template <%(types)s>
 434 bool PredFunction%(n)s(%(tvs)s) {
 435   return %(v_sum)s > 0;
 436 }
 437
 438 // The following two functions are needed to circumvent a bug in
 439 // gcc 2.95.3, which sometimes has problem with the above template
 440 // function.
 441 bool PredFunction%(n)sInt(%(int_vs)s) {
 442   return %(v_sum)s > 0;
 443 }
 444 bool PredFunction%(n)sBool(%(Bool_vs)s) {
 445   return %(v_sum)s > 0;
 446 }
 447 """ % DEFS)
 448
 449   tests += """
 450 // A %(arity)s predicate functor.
 451 struct PredFunctor%(n)s {
 452   template <%(types)s>
 453   bool operator()(""" % DEFS
 454
 455   tests += Iter(n, 'const T%s& v%s', sep=""",
 456                   """)
 457
 458   tests += """) {
 459     return %(v_sum)s > 0;
 460   }
 461 };
 462 """ % DEFS
 463
 464   tests += """
 465 // A %(arity)s predicate-formatter function.
 466 template <%(types)s>
 467 testing::AssertionResult PredFormatFunction%(n)s(""" % DEFS
 468
 469   tests += Iter(n, 'const char* e%s', sep=""",
 470                                              """)
 471
 472   tests += Iter(n, """,
 473                                              const T%s& v%s""")
 474
 475   tests += """) {
 476   if (PredFunction%(n)s(%(vs)s))
 477     return testing::AssertionSuccess();
 478
 479   return testing::AssertionFailure()
 480       << """ % DEFS
 481
 482   tests += Iter(n, 'e%s', sep=' << " + " << ')
 483
 484   tests += """
 485       << " is expected to be positive, but evaluates to "
 486       << %(v_sum)s << ".";
 487 }
 488 """ % DEFS
 489
 490   tests += """
 491 // A %(arity)s predicate-formatter functor.
 492 struct PredFormatFunctor%(n)s {
 493   template <%(types)s>
 494   testing::AssertionResult operator()(""" % DEFS
 495
 496   tests += Iter(n, 'const char* e%s', sep=""",
 497                                       """)
 498
 499   tests += Iter(n, """,
 500                                       const T%s& v%s""")
 501
 502   tests += """) const {
 503     return PredFormatFunction%(n)s(%(es)s, %(vs)s);
 504   }
 505 };
 506 """ % DEFS
 507
 508   tests += """
 509 // Tests for {EXPECT|ASSERT}_PRED_FORMAT%(n)s.
 510
 511 class Predicate%(n)sTest : public testing::Test {
 512  protected:
 513   virtual void SetUp() {
 514     expected_to_finish_ = true;
 515     finished_ = false;""" % DEFS
 516
 517   tests += """
 518     """ + Iter(n, 'n%s_ = ') + """0;
 519   }
 520 """
 521
 522   tests += """
 523   virtual void TearDown() {
 524     // Verifies that each of the predicate's arguments was evaluated
 525     // exactly once."""
 526
 527   tests += ''.join(["""
 528     EXPECT_EQ(1, n%s_) <<
 529         "The predicate assertion didn't evaluate argument %s "
 530         "exactly once.";""" % (i, i + 1) for i in OneTo(n)])
 531
 532   tests += """
 533
 534     // Verifies that the control flow in the test function is expected.
 535     if (expected_to_finish_ && !finished_) {
 536       FAIL() << "The predicate assertion unexpactedly aborted the test.";
 537     } else if (!expected_to_finish_ && finished_) {
 538       FAIL() << "The failed predicate assertion didn't abort the test "
 539                 "as expected.";
 540     }
 541   }
 542
 543   // true iff the test function is expected to run to finish.
 544   static bool expected_to_finish_;
 545
 546   // true iff the test function did run to finish.
 547   static bool finished_;
 548 """ % DEFS
 549
 550   tests += Iter(n, """
 551   static int n%s_;""")
 552
 553   tests += """
 554 };
 555
 556 bool Predicate%(n)sTest::expected_to_finish_;
 557 bool Predicate%(n)sTest::finished_;
 558 """ % DEFS
 559
 560   tests += Iter(n, """int Predicate%%(n)sTest::n%s_;
 561 """) % DEFS
 562
 563   tests += """
 564 typedef Predicate%(n)sTest EXPECT_PRED_FORMAT%(n)sTest;
 565 typedef Predicate%(n)sTest ASSERT_PRED_FORMAT%(n)sTest;
 566 typedef Predicate%(n)sTest EXPECT_PRED%(n)sTest;
 567 typedef Predicate%(n)sTest ASSERT_PRED%(n)sTest;
 568 """ % DEFS
 569
 570   def GenTest(use_format, use_assert, expect_failure,
 571               use_functor, use_user_type):
 572     """Returns the test for a predicate assertion macro.
 573
 574     Args:
 575       use_format:     true iff the assertion is a *_PRED_FORMAT*.
 576       use_assert:     true iff the assertion is a ASSERT_*.
 577       expect_failure: true iff the assertion is expected to fail.
 578       use_functor:    true iff the first argument of the assertion is
 579                       a functor (as opposed to a function)
 580       use_user_type:  true iff the predicate functor/function takes
 581                       argument(s) of a user-defined type.
 582
 583     Example:
 584
 585       GenTest(1, 0, 0, 1, 0) returns a test that tests the behavior
 586       of a successful EXPECT_PRED_FORMATn() that takes a functor
 587       whose arguments have built-in types."""
 588
 589     if use_assert:
 590       assrt = 'ASSERT'  # 'assert' is reserved, so we cannot use
 591                         # that identifier here.
 592     else:
 593       assrt = 'EXPECT'
 594
 595     assertion = assrt + '_PRED'
 596
 597     if use_format:
 598       pred_format = 'PredFormat'
 599       assertion += '_FORMAT'
 600     else:
 601       pred_format = 'Pred'
 602
 603     assertion += '%(n)s' % DEFS
 604
 605     if use_functor:
 606       pred_format_type = 'functor'
 607       pred_format += 'Functor%(n)s()'
 608     else:
 609       pred_format_type = 'function'
 610       pred_format += 'Function%(n)s'
 611       if not use_format:
 612         if use_user_type:
 613           pred_format += 'Bool'
 614         else:
 615           pred_format += 'Int'
 616
 617     test_name = pred_format_type.title()
 618
 619     if use_user_type:
 620       arg_type = 'user-defined type (Bool)'
 621       test_name += 'OnUserType'
 622       if expect_failure:
 623         arg = 'Bool(n%s_++)'
 624       else:
 625         arg = 'Bool(++n%s_)'
 626     else:
 627       arg_type = 'built-in type (int)'
 628       test_name += 'OnBuiltInType'
 629       if expect_failure:
 630         arg = 'n%s_++'
 631       else:
 632         arg = '++n%s_'
 633
 634     if expect_failure:
 635       successful_or_failed = 'failed'
 636       expected_or_not = 'expected.'
 637       test_name +=  'Failure'
 638     else:
 639       successful_or_failed = 'successful'
 640       expected_or_not = 'UNEXPECTED!'
 641       test_name +=  'Success'
 642
 643     # A map that defines the values used in the test template.
 644     defs = DEFS.copy()
 645     defs.update({
 646       'assert' : assrt,
 647       'assertion' : assertion,
 648       'test_name' : test_name,
 649       'pf_type' : pred_format_type,
 650       'pf' : pred_format,
 651       'arg_type' : arg_type,
 652       'arg' : arg,
 653       'successful' : successful_or_failed,
 654       'expected' : expected_or_not,
 655       })
 656
 657     test = """
 658 // Tests a %(successful)s %(assertion)s where the
 659 // predicate-formatter is a %(pf_type)s on a %(arg_type)s.
 660 TEST_F(%(assertion)sTest, %(test_name)s) {""" % defs
 661
 662     indent = (len(assertion) + 3)*' '
 663     extra_indent = ''
 664
 665     if expect_failure:
 666       extra_indent = '  '
 667       if use_assert:
 668         test += """
 669   expected_to_finish_ = false;
 670   EXPECT_FATAL_FAILURE({  // NOLINT"""
 671       else:
 672         test += """
 673   EXPECT_NONFATAL_FAILURE({  // NOLINT"""
 674
 675     test += '\n' + extra_indent + """  %(assertion)s(%(pf)s""" % defs
 676
 677     test = test % defs
 678     test += Iter(n, ',\n' + indent + extra_indent + '%(arg)s' % defs)
 679     test += ');\n' + extra_indent + '  finished_ = true;\n'
 680
 681     if expect_failure:
 682       test += '  }, "");\n'
 683
 684     test += '}\n'
 685     return test
 686
 687   # Generates tests for all 2**6 = 64 combinations.
 688   tests += ''.join([GenTest(use_format, use_assert, expect_failure,
 689                             use_functor, use_user_type)
 690                     for use_format in [0, 1]
 691                     for use_assert in [0, 1]
 692                     for expect_failure in [0, 1]
 693                     for use_functor in [0, 1]
 694                     for use_user_type in [0, 1]
 695                     ])
 696
 697   return tests
 698
 699
 700 def UnitTestPostamble():
 701   """Returns the postamble for the tests."""
 702
 703   return ''
 704
 705
 706 def GenerateUnitTest(n):
 707   """Returns the tests for up-to n-ary predicate assertions."""
 708
 709   GenerateFile(UNIT_TEST,
 710                UnitTestPreamble()
 711                + ''.join([TestsForArity(i) for i in OneTo(n)])
 712                + UnitTestPostamble())
 713
 714
 715 def _Main():
 716   """The entry point of the script.  Generates the header file and its
 717   unit test."""
 718
 719   if len(sys.argv) != 2:
 720     print __doc__
 721     print 'Author: ' + __author__
 722     sys.exit(1)
 723
 724   n = int(sys.argv[1])
 725   GenerateHeader(n)
 726   GenerateUnitTest(n)
 727
 728
 729 if __name__ == '__main__':
 730   _Main()