CppUTest を試してみた

C++勉強会 in 広島 での LT 資料
http://partake.in/events/5ddde1fe-88b7-4541-9f37-02cf4fa0284c

C++の勉強会だし、オープンセミナー2014@広島の告知をしないとだし、ということでC++のテスティングフレームワークを試した。

解説とかはこちらに
http://blog.eiel.info/blog/2014/01/11/cpp-hiroshima/
コードはこちらに。
https://github.com/eiel/cpphiroshima-1

Transcript

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20. ςετίʔυ #include "CppUTest/TestHarness.h" TEST_GROUP(TMP) { }; ! TEST(TMP, factorial_2) { CHECK_EQUAL(2, factorial < 2 >::value); } ! TEST(TMP, factorial_3) { CHECK_EQUAL(6, factorial < 3 >::value); } ظ଴͢Δ݁Ռ 2! ظ଴͢Δ݁Ռ 3! άϧʔϓ໊ ςετ໊ άϧʔϓ໊
21. ςετϥϯφʔ #include "CppUTest/CommandLineTestRunner.h" ! int main(int ac, char** av) { return CommandLineTestRunner::RunAllTests(ac, av); } ! IMPORT_TEST_GROUP(TMP); άϧʔϓ໊
22. ࣮ߦͯ͠ΈΔ src/factorial_test.cpp:15:18: error: use of undeclared identifier 'factorial' CHECK_EQUAL(2, factorial < 2 >::value); ^ /usr/local/include/CppUTest/UtestMacros.h:116:34: note: expanded from macro 'CHECK_EQUAL' CHECK_EQUAL_LOCATION(expected, actual, __FILE__, __LINE__) ^ /usr/local/include/CppUTest/UtestMacros.h:119:60: note: expanded from macro 'CHECK_EQUAL_LOCATION' { UtestShell::getCurrent()->assertEquals(((expected) != (actual)), Str... ^ src/factorial_test.cpp:15:35: error: no member named 'value' in the global namespace CHECK_EQUAL(2, factorial < 2 >::value); ~~^
23. GBDUPSJBM
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24. ࣮૷ͯ͠Έͨ template < unsigned N > struct factorial { static constexpr unsigned value = N * factorial < N - 1 >::value; }; ! template < > struct factorial < 0 > { static constexpr unsigned value = 1; };
25. ςετΛ࣮ߦͯ͠Έͨ .... OK (4 tests, 4 ran, 4 checks, 0 ignored, 0 filtered out, 1 ms)
26. ظ଴ͨ͠ͱ͓Γʹಈ͍ͯΔ͜ͱΛ ڭ͑ͯ͘ΕΔ
27. ΄Μͱʹಈ͍ͯΔͷʁ
28. Θ͟ͱࣦഊͤͯ͞ΈΑ͏ template < > struct factorial < 0 > { static constexpr unsigned value = 4; };
29. ࣮ߦ݁Ռ src/factorial_test.cpp:31: error: Failure in TEST(TMP, factorial_3) expected <6> but was < 24 (0x00000018)> difference starts at position 0 at: < 24>
30. 
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33. TUBUJD@BTTFSU static_assert(2 == factorial < 2 >::value, "should factorial(2) == 2"); static_assert(3*2 == factorial < 3 >::value, "should factorial(3) == 6");
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