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  1. // Copyright 2013, Google Inc.
  2. // All rights reserved.
  3. //
  4. // Redistribution and use in source and binary forms, with or without
  5. // modification, are permitted provided that the following conditions are
  6. // met:
  7. //
  8. //     * Redistributions of source code must retain the above copyright
  9. // notice, this list of conditions and the following disclaimer.
  10. //     * Redistributions in binary form must reproduce the above
  11. // copyright notice, this list of conditions and the following disclaimer
  12. // in the documentation and/or other materials provided with the
  13. // distribution.
  14. //     * Neither the name of Google Inc. nor the names of its
  15. // contributors may be used to endorse or promote products derived from
  16. // this software without specific prior written permission.
  17. //
  18. // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19. // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20. // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21. // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22. // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23. // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24. // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25. // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26. // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27. // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28. // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29.  
  30. //
  31. // Each TEST() expands to some static registration logic.  GCC puts all
  32. // such static initialization logic for a translation unit in a common,
  33. // internal function.  Since Google's build system restricts how much
  34. // stack space a function can use, there's a limit on how many TEST()s
  35. // one can put in a single C++ test file.  This test ensures that a large
  36. // number of TEST()s can be defined in the same translation unit.
  37.  
  38. #include "gtest/gtest.h"
  39.  
  40. // This macro defines 10 dummy tests.
  41. #define TEN_TESTS_(test_case_name) \
  42.   TEST(test_case_name, T0) {} \
  43.   TEST(test_case_name, T1) {} \
  44.   TEST(test_case_name, T2) {} \
  45.   TEST(test_case_name, T3) {} \
  46.   TEST(test_case_name, T4) {} \
  47.   TEST(test_case_name, T5) {} \
  48.   TEST(test_case_name, T6) {} \
  49.   TEST(test_case_name, T7) {} \
  50.   TEST(test_case_name, T8) {} \
  51.   TEST(test_case_name, T9) {}
  52.  
  53. // This macro defines 100 dummy tests.
  54. #define HUNDRED_TESTS_(test_case_name_prefix) \
  55.   TEN_TESTS_(test_case_name_prefix ## 0) \
  56.   TEN_TESTS_(test_case_name_prefix ## 1) \
  57.   TEN_TESTS_(test_case_name_prefix ## 2) \
  58.   TEN_TESTS_(test_case_name_prefix ## 3) \
  59.   TEN_TESTS_(test_case_name_prefix ## 4) \
  60.   TEN_TESTS_(test_case_name_prefix ## 5) \
  61.   TEN_TESTS_(test_case_name_prefix ## 6) \
  62.   TEN_TESTS_(test_case_name_prefix ## 7) \
  63.   TEN_TESTS_(test_case_name_prefix ## 8) \
  64.   TEN_TESTS_(test_case_name_prefix ## 9)
  65.  
  66. // This macro defines 1000 dummy tests.
  67. #define THOUSAND_TESTS_(test_case_name_prefix) \
  68.   HUNDRED_TESTS_(test_case_name_prefix ## 0) \
  69.   HUNDRED_TESTS_(test_case_name_prefix ## 1) \
  70.   HUNDRED_TESTS_(test_case_name_prefix ## 2) \
  71.   HUNDRED_TESTS_(test_case_name_prefix ## 3) \
  72.   HUNDRED_TESTS_(test_case_name_prefix ## 4) \
  73.   HUNDRED_TESTS_(test_case_name_prefix ## 5) \
  74.   HUNDRED_TESTS_(test_case_name_prefix ## 6) \
  75.   HUNDRED_TESTS_(test_case_name_prefix ## 7) \
  76.   HUNDRED_TESTS_(test_case_name_prefix ## 8) \
  77.   HUNDRED_TESTS_(test_case_name_prefix ## 9)
  78.  
  79. // Ensures that we can define 1000 TEST()s in the same translation
  80. // unit.
  81. THOUSAND_TESTS_(T)
  82.  
  83. int main(int argc, char **argv) {
  84.   testing::InitGoogleTest(&argc, argv);
  85.  
  86.   // We don't actually need to run the dummy tests - the purpose is to
  87.   // ensure that they compile.
  88.   return 0;
  89. }
  90.