boost::test Libraries

This is a discussion on boost::test Libraries within the C++ Programming forums, part of the General Programming Boards category; I confess I'm a little afraid of going back to boost bug reports and regression tests pages. I get lost ...

  1. #1
    (?<!re)tired Mario F.'s Avatar
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    boost::test Libraries

    I confess I'm a little afraid of going back to boost bug reports and regression tests pages. I get lost in there very easily and can't make most of the information given. It's my fault, I know. But until I get more knowledgeable about these things, they will keep giving me an headache.

    So, in hoping someone here uses Boost::Test, and uses it under MinGW 3.4.5, I need to know if you are experiencing the same problem as I am...

    Library: libboost_unit_test_framework-mgw34-1_34 (static and DLL, debug and release)

    Linking my tests with the release static library or with the release DLL gives me an Access Violation at runtime. Only with the debug versions of these libraries can I make my tests work.

    (2)
    In fact, even with the debug version, some tests end up also originating Access Violations at runtime. This is a typical example:

    Code:
    #include <boost/test/unit_test.hpp>
    using namespace boost::unit_test;
    
    void free_test_function()
    {
        BOOST_CHECK(2 == 1);
    
        int* p = (int*)0;
        BOOST_CHECK( *p == 0 ); // Access violation here
    }
    
    test_suite* init_unit_test_suite( int, char* [] ) {
        framework::master_test_suite().p_name.value = "Unit test example 02";
    
        framework::master_test_suite().add( BOOST_TEST_CASE( &free_test_function ), 2 );
    
        return 0;
    }

    If you are just passing by this thread , naturally an Access Violation is expected. However, BOOST_CHECK has the capability of catching that.
    The programmer’s wife tells him: “Run to the store and pick up a loaf of bread. If they have eggs, get a dozen.”
    The programmer comes home with 12 loaves of bread.


    Originally Posted by brewbuck:
    Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.

  2. #2
    semi-colon generator ChaosEngine's Avatar
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    Quote Originally Posted by Mario F. View Post

    If you are just passing by this thread , naturally an Access Violation is expected. However, BOOST_CHECK has the capability of catching that.
    Are you sure about that? I know it can catch an exception, but an access violation? Surely that would cause undefined behaviour, and the program will fall over.

    I don't see why you would test for such a case anyway.
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  3. #3
    (?<!re)tired Mario F.'s Avatar
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    The test is merely indicative of its ability to catch system level errors. It was actually taken from one of the library example files. I believe a more useful usage would be to actually test bad memory access as part of the unit testing.

    The expected behavior is:
    // reports 'unknown location(0): fatal error in "free_test_function": memory access violation
    // d:\source code\boost\libs\test\example\unit_test_example_02. cpp(25): last checkpoint'
    After which, the test application does exit abruptly with a boost::exit_exception_failure code which is the code associated with uncaught exceptions and fatal errors.

    Naturally this is my interpretation of the documentation and it may be flawed.
    The programmer’s wife tells him: “Run to the store and pick up a loaf of bread. If they have eggs, get a dozen.”
    The programmer comes home with 12 loaves of bread.


    Originally Posted by brewbuck:
    Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.

  4. #4
    semi-colon generator ChaosEngine's Avatar
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    ok, I've had a look into this.
    compiling the attached file initially, I get the same runtime access violation.

    Having a quick scout around the web, I found this page.

    When I set the /EHa option it works as expected. I don't have mingw, but from a look at the g++ docs I'd say you could try the -fnon-call-exceptions switch.

    HTH.
    Attached Files Attached Files

  5. #5
    (?<!re)tired Mario F.'s Avatar
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    Chaos! Thanks a bunch mate!

    It didn't work with that switch but I think I can take it from here. You pointed me in the right direction. I'll investigate further.

    In the end, if this is a problem with mingw, there's always the possibility of compiling my unit tests on VS since they are completely separate from the main project.
    The programmer’s wife tells him: “Run to the store and pick up a loaf of bread. If they have eggs, get a dozen.”
    The programmer comes home with 12 loaves of bread.


    Originally Posted by brewbuck:
    Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.

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