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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
34Generates the implementation of Google Test predicate assertions and
35accompanying tests.
36
37Usage:
38
39  gen_gtest_pred_impl.py MAX_ARITY
40
41where MAX_ARITY is a positive integer.
42
43The command generates the implementation of up-to MAX_ARITY-ary
44predicate assertions, and writes it to file gtest_pred_impl.h in the
45directory where the script is.  It also generates the accompanying
46unit test in file gtest_pred_impl_unittest.cc.
47"""
48
49__author__ = 'wan@google.com (Zhanyong Wan)'
50
51import os
52import sys
53import time
54
55# Where this script is.
56SCRIPT_DIR = os.path.dirname(sys.argv[0])
57
58# Where to store the generated header.
59HEADER = os.path.join(SCRIPT_DIR, '../include/gtest/gtest_pred_impl.h')
60
61# Where to store the generated unit test.
62UNIT_TEST = os.path.join(SCRIPT_DIR, '../test/gtest_pred_impl_unittest.cc')
63
64
65def 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// Makes sure this header is not included before gtest.h.
119#ifndef GTEST_INCLUDE_GTEST_GTEST_H_
120# error Do not include gtest_pred_impl.h directly.  Include gtest.h instead.
121#endif  // GTEST_INCLUDE_GTEST_GTEST_H_
122
123// This header implements a family of generic predicate assertion
124// macros:
125//
126//   ASSERT_PRED_FORMAT1(pred_format, v1)
127//   ASSERT_PRED_FORMAT2(pred_format, v1, v2)
128//   ...
129//
130// where pred_format is a function or functor that takes n (in the
131// case of ASSERT_PRED_FORMATn) values and their source expression
132// text, and returns a testing::AssertionResult.  See the definition
133// of ASSERT_EQ in gtest.h for an example.
134//
135// If you don't care about formatting, you can use the more
136// restrictive version:
137//
138//   ASSERT_PRED1(pred, v1)
139//   ASSERT_PRED2(pred, v1, v2)
140//   ...
141//
142// where pred is an n-ary function or functor that returns bool,
143// and the values v1, v2, ..., must support the << operator for
144// streaming to std::ostream.
145//
146// We also define the EXPECT_* variations.
147//
148// For now we only support predicates whose arity is at most %(n)s.
149// Please email googletestframework@googlegroups.com if you need
150// support for higher arities.
151
152// GTEST_ASSERT_ is the basic statement to which all of the assertions
153// in this file reduce.  Don't use this in your code.
154
155#define GTEST_ASSERT_(expression, on_failure) \\
156  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \\
157  if (const ::testing::AssertionResult gtest_ar = (expression)) \\
158    ; \\
159  else \\
160    on_failure(gtest_ar.failure_message())
161""" % DEFS)
162
163
164def Arity(n):
165  """Returns the English name of the given arity."""
166
167  if n < 0:
168    return None
169  elif n <= 3:
170    return ['nullary', 'unary', 'binary', 'ternary'][n]
171  else:
172    return '%s-ary' % n
173
174
175def Title(word):
176  """Returns the given word in title case.  The difference between
177  this and string's title() method is that Title('4-ary') is '4-ary'
178  while '4-ary'.title() is '4-Ary'."""
179
180  return word[0].upper() + word[1:]
181
182
183def OneTo(n):
184  """Returns the list [1, 2, 3, ..., n]."""
185
186  return range(1, n + 1)
187
188
189def Iter(n, format, sep=''):
190  """Given a positive integer n, a format string that contains 0 or
191  more '%s' format specs, and optionally a separator string, returns
192  the join of n strings, each formatted with the format string on an
193  iterator ranged from 1 to n.
194
195  Example:
196
197  Iter(3, 'v%s', sep=', ') returns 'v1, v2, v3'.
198  """
199
200  # How many '%s' specs are in format?
201  spec_count = len(format.split('%s')) - 1
202  return sep.join([format % (spec_count * (i,)) for i in OneTo(n)])
203
204
205def ImplementationForArity(n):
206  """Returns the implementation of n-ary predicate assertions."""
207
208  # A map the defines the values used in the implementation template.
209  DEFS = {
210    'n' : str(n),
211    'vs' : Iter(n, 'v%s', sep=', '),
212    'vts' : Iter(n, '#v%s', sep=', '),
213    'arity' : Arity(n),
214    'Arity' : Title(Arity(n))
215    }
216
217  impl = """
218
219// Helper function for implementing {EXPECT|ASSERT}_PRED%(n)s.  Don't use
220// this in your code.
221template <typename Pred""" % DEFS
222
223  impl += Iter(n, """,
224          typename T%s""")
225
226  impl += """>
227AssertionResult AssertPred%(n)sHelper(const char* pred_text""" % DEFS
228
229  impl += Iter(n, """,
230                                  const char* e%s""")
231
232  impl += """,
233                                  Pred pred"""
234
235  impl += Iter(n, """,
236                                  const T%s& v%s""")
237
238  impl += """) {
239  if (pred(%(vs)s)) return AssertionSuccess();
240
241""" % DEFS
242
243  impl += '  return AssertionFailure() << pred_text << "("'
244
245  impl += Iter(n, """
246                            << e%s""", sep=' << ", "')
247
248  impl += ' << ") evaluates to false, where"'
249
250  impl += Iter(n, """
251                            << "\\n" << e%s << " evaluates to " << v%s""")
252
253  impl += """;
254}
255
256// Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT%(n)s.
257// Don't use this in your code.
258#define GTEST_PRED_FORMAT%(n)s_(pred_format, %(vs)s, on_failure)\\
259  GTEST_ASSERT_(pred_format(%(vts)s, %(vs)s), \\
260                on_failure)
261
262// Internal macro for implementing {EXPECT|ASSERT}_PRED%(n)s.  Don't use
263// this in your code.
264#define GTEST_PRED%(n)s_(pred, %(vs)s, on_failure)\\
265  GTEST_ASSERT_(::testing::AssertPred%(n)sHelper(#pred""" % DEFS
266
267  impl += Iter(n, """, \\
268                                             #v%s""")
269
270  impl += """, \\
271                                             pred"""
272
273  impl += Iter(n, """, \\
274                                             v%s""")
275
276  impl += """), on_failure)
277
278// %(Arity)s predicate assertion macros.
279#define EXPECT_PRED_FORMAT%(n)s(pred_format, %(vs)s) \\
280  GTEST_PRED_FORMAT%(n)s_(pred_format, %(vs)s, GTEST_NONFATAL_FAILURE_)
281#define EXPECT_PRED%(n)s(pred, %(vs)s) \\
282  GTEST_PRED%(n)s_(pred, %(vs)s, GTEST_NONFATAL_FAILURE_)
283#define ASSERT_PRED_FORMAT%(n)s(pred_format, %(vs)s) \\
284  GTEST_PRED_FORMAT%(n)s_(pred_format, %(vs)s, GTEST_FATAL_FAILURE_)
285#define ASSERT_PRED%(n)s(pred, %(vs)s) \\
286  GTEST_PRED%(n)s_(pred, %(vs)s, GTEST_FATAL_FAILURE_)
287
288""" % DEFS
289
290  return impl
291
292
293def HeaderPostamble():
294  """Returns the postamble for the header file."""
295
296  return """
297
298#endif  // GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
299"""
300
301
302def GenerateFile(path, content):
303  """Given a file path and a content string, overwrites it with the
304  given content."""
305
306  print 'Updating file %s . . .' % path
307
308  f = file(path, 'w+')
309  print >>f, content,
310  f.close()
311
312  print 'File %s has been updated.' % path
313
314
315def 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
325def 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.
391struct 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.
404std::ostream& operator<<(std::ostream& os, const Bool& x) {
405  return os << (x.value ? "true" : "false");
406}
407
408""" % DEFS)
409
410
411def 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.
433template <%(types)s>
434bool 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.
441bool PredFunction%(n)sInt(%(int_vs)s) {
442  return %(v_sum)s > 0;
443}
444bool PredFunction%(n)sBool(%(Bool_vs)s) {
445  return %(v_sum)s > 0;
446}
447""" % DEFS)
448
449  tests += """
450// A %(arity)s predicate functor.
451struct 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.
466template <%(types)s>
467testing::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.
492struct 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
511class 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
556bool Predicate%(n)sTest::expected_to_finish_;
557bool Predicate%(n)sTest::finished_;
558""" % DEFS
559
560  tests += Iter(n, """int Predicate%%(n)sTest::n%s_;
561""") % DEFS
562
563  tests += """
564typedef Predicate%(n)sTest EXPECT_PRED_FORMAT%(n)sTest;
565typedef Predicate%(n)sTest ASSERT_PRED_FORMAT%(n)sTest;
566typedef Predicate%(n)sTest EXPECT_PRED%(n)sTest;
567typedef 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.
660TEST_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
700def UnitTestPostamble():
701  """Returns the postamble for the tests."""
702
703  return ''
704
705
706def 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
715def _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
729if __name__ == '__main__':
730  _Main()
731