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[Test] Incorrect assertion count/Warning when tests do not call one of the Test Tools?
by Kevin Wheatley 29 Mar '06

29 Mar '06

I was just wondering if there is an option to generate an error/warning if a test function called by the test library does no 'asserts' (or any of the BOOST_* test tools). I know there is the option to output the number of assertions and the number of tests, but as we don't always have the one assert per test style of testing here, we can't use that directly to catch tests that do no testing, the detailed ouput level in this case does something like this: Running 5 test cases... unknown location(0): fatal error in "read_one_line_file": std::runtime_error: not implemented Test suite "Master Test Suite" failed with: 8 assertions out of 8 passed 4 test cases out of 5 passed 1 test case out of 5 failed Test case "construct_default_object" passed with: 1 assertion out of 1 passed Test case "no_such_file" passed with: 2 assertions out of 2 passed Test case "blank_filename" passed with: 2 assertions out of 2 passed Test case "read_empty_file" passed with: 2 assertions out of 2 passed Test case "read_one_line_file" aborted with: 1 assertion out of 1 passed The problem comes from (sample): BOOST_AUTO_TEST_CASE( construct_default_object ) { CSVFileReader defaultObject; boost::ignore_unused_variable_warning(defaultObject); } I'd like to say I don't see any asserts here, and would like a warning, or at least to note that I did not call an assert. In fact it looks like BOOST_AUTO_TEST_CASE() is adding an additional test to all of my test cases. Is this by design? Thanks Kevin -- | Kevin Wheatley, Cinesite (Europe) Ltd | Nobody thinks this | | Senior Technology | My employer for certain | | And Network Systems Architect | Not even myself |

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bjam and gprof
by Dean Bushey 29 Mar '06

29 Mar '06

Hi, I'm trying to generate profile information on the test cases. I see that I can use the -sBUILD=profile option to bjam. This places the resulting gmon.out in the current directory, and lots of other information in the <boost>/bin/..... directory. To run gprof I need the executible file, along with the gmon.out file. Is this kept somewhere? Is there a way to tell bjam to save the executible file somewhere for use with gprof? Thanks Dean Dean Bushey --------------------------------- Blab-away for as little as 1¢/min. Make PC-to-Phone Calls using Yahoo! Messenger with Voice.

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Re: [Boost-users] Known issues loading lots of objects withxml_iarchive
by Christopher Gillett 29 Mar '06

29 Mar '06

See I foolishly assumed that all your code was bug free :-) lol...sorry for the nebulous report - here is something a bit more concrete. The scenario as stated is loading a large number of objects that have been previously serialized into a number of files. After around 150 files have been processed I hit an archive exception and stream error. This occurs only when using the XML archive...if I use the binary archive I can process as many files as I'd like (and in fact I've tested many more than I actually need). The approach is "textbook" in that I've seen this same pattern many times in sample code, tutorials, etc. The only difference in the code between binary and xml serialization is my load function: XML: #include <boost/archive/xml_oarchive.hpp> #include <boost/archive/xml_iarchive.hpp> void load( MyObjType &obj, const char *fileName ) { std::ifstream ifs( fileName ); assert( ifs.good() ); boost::archive::xml_iarchive ia( ifs ); ia >> BOOST_SERIALIZATION_NVP( obj ); } Binary: #include <boost/archive/binary_oarchive.hpp> #include <boost/archive/binary_iarchive.hpp> void load( MyObjType &obj, const char *fileName ) { std::ifstream ifs( fileName ); assert( ifs.good() ); boost::archive::binary_iarchive ia( ifs ); ia >> obj; } Each class I'm serializing has the usual "boilerplate" in the class definition, for example: #include <boost/serialization/nvp.hpp> #include <boost/serialization/utility.hpp> #include <boost/serialization/list.hpp> #include <boost/serialization/version.hpp> class MyClass : public MyClassBaseObject { friend class boost::serialization::access; friend std::ostream & operator<<(std::ostream &os, const MyClass &MyClassObj); template<class Archive> void serialize(Archive &ar, const unsigned int version) { ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP( MyClassBaseObj ); ar & BOOST_SERIALIZATION_NVP( thing1 ); ar & BOOST_SERIALIZATION_NVP( thing2 ); ar & BOOST_SERIALIZATION_NVP( etc ); } ... }; I initially thought this was a file management problem, but since I can load as many files as I'd like with the binary archive I suspect a bug in the XML archive code. While I can live with binary serialization if necessary, my goal is XML serialization. Any thoughts on this? I can put together a totally contrived example program that will demonstrate the failure if necessary. I'm hoping to hear that it's something stupid on my part. Thanks, Chris Gillett > Date: Mon, 13 Mar 2006 18:40:32 -0800 > From: "Robert Ramey" <ramey(a)rrsd.com> > Subject: Re: [Boost-users] Known issues loading lots of objects > withxml_iarchive? > To: boost-users(a)lists.boost.org > Message-ID: <dv5aeu$l6e$1(a)sea.gmane.org> > > There are no "known" issues. In fact the system has no known bugs > either. LOL - of course the function of this list is to address the > problem. I haven't heard of anyone having this problem. You might > investigate a little by seeing if occurs just in xml or in other > archives > as well. > > Robert Ramey > > Christopher Gillett wrote: >> I am serializing a LOT of objects, one per file. I can create >> XML for >> many thousands of objects with no issue. However, when trying to >> load a few hundred objects (using a separate program, btw) I am >> hitting a boost::archive::archive_exception with a stream error while >> loading around the 161st file, which I believe based on stack traces >> is coming from within >> boost::archive::basic_xml_grammar<char>::parse_end_tag (). >> >> The approach I'm taking is fairly textbook, so I'm curious if there >> are known issues with loading a lot of files, etc. >> >> Any advice appreciate. >> >> Thanks, >> Chris Gillett

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How to handle slightly different command line interface when using boost::program_options
by Peng Yu 29 Mar '06

29 Mar '06

The program_options package ease the way to implement the program cmd interface. But what I found is that as the interface getting bigger the main() program gets longer and longer and is hard to read, because a lot of conditional branch statements have to be used. In general, the declaration of the options are at the beginning of the program and the use of the options are at somewhere afterwards. This cause the program hard to maintain. I'm wondering if there is any OO way to handle this problem. Then the main program could be easily maintained and understood.

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Using multi_array for OpenGL textures
by Matthias Biedermann 28 Mar '06

28 Mar '06

Hi there, I'd like to use 3D volume date stored as multi_array with OpenGL as texture. What is the best way to do this without copying, as the default ordering seems to be incompatible with OpenGL's column-major layout? I've read something about custom storage orderings etc. but my first tries did not work right away... Or is this related to the quite recent bug regarding resizing multi_arrays with non-default ordering (from Mar 6)? Thanks in advance for your help, Matthias

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[mpl] integer for_each
by Yuval Ronen 28 Mar '06

28 Mar '06

Hi. I have a function which is templated with an integer template <int N> void f() { ... } Within this function, I wish to use mpl::for_each to call another integer-templated (say, g()) function, with all numbers from 0 to N-1. How can I achieve this? I thought of making a mpl::vector<int_<0>, int_<1>, ..., int_<N-1> >, and then use mpl::for_each to iterate it, but I don't know how to generate this mpl::vector. How can I do that? Or maybe there's a better way? BTW: I first thought of using mpl::vector_c, but it seems that mpl:for_each doesn't support mpl::vector_c, only mpl::vector. Is this true? Thanks, Yuval

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ERROR (?) in interplay between uBLAS and STL algorithms.
by Pascal Bauer 28 Mar '06

28 Mar '06

Hi List, I created a (stl vector) of matrix_rows from the boost uBLAS. This seems to work fine. But somehow, the interplay with the stl algorithms seems then not to work. If I compile the code, i would expect a list of all the rows, ordered by the first row entry. But to sort algorithms seems to create multiple copies of the same matrix row. Can someone tell me, what is going wrong there? I'm using the gcc version 4.0.2 20050901 (prerelease) (SUSE Linux). Many thanks for advises how to make this work. Here the Code: #include <boost/numeric/ublas/matrix.hpp> #include <boost/numeric/ublas/matrix_proxy.hpp> #include <boost/numeric/ublas/io.hpp> #include <vector> #include <algorithm> namespace num = boost::numeric::ublas; typedef num::matrix<double> matrix_type; typedef num::matrix_row<matrix_type> matrix_row; typedef std::vector<matrix_row> data_proxy; template <int N> class Ordering { public: bool operator()(const matrix_row& row_1, const matrix_row& row_2) { return row_1(N) < row_2(N); } }; int main(int argc, char* argv) { const size_t N_1 = 25; const size_t M_1 = 10; const size_t N_2 = 20; const size_t M_2 = 10; matrix_type Data_1(N_1, M_1); matrix_type Data_2(N_2, M_2); data_proxy my_proxy; for (size_t i = 0; i < N_1; ++i) { Data_1(i, 0) = i; my_proxy.push_back(matrix_row(Data_1, i) ); } for (size_t j = 0; j < N_2; ++j) { Data_2(j, 0) = 0.5 + j; my_proxy.push_back(matrix_row(Data_2, j) ); } data_proxy copy(my_proxy); std::sort(my_proxy.begin(), my_proxy.end(), Ordering<0>() ); for (size_t i = 0; i < my_proxy.size(); ++i) { std::cout << my_proxy[i] << std::endl; } }

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RegEx Exception
by Michael Primeaux 28 Mar '06

28 Mar '06

I'm using the latest version of the boost regex libraries and am receiving an exception when using the regex_replace function with the following regular expression: (?i)(?<!')((<\s*OBJECT\s*[^>]+classid="clsid:[^>]+?(?<!\s*/\s*)>[^*]+?<\s*/\ s*OBJECT\s*>)|(<\s*OBJECT\s*[^>]+classid=\s*\"clsid:[^/>]+/)) ..which works in other industry standard regex library routines. I seem to be failing on line 767 of basic_regex_creator.hpp. Any assistance is appreciated. Kindest regards, Michael Primeaux

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Re: [Boost-users] safe assign of int to enum
by Sohail Somani 28 Mar '06

28 Mar '06

> -----Original Message----- > From: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Tim > Robertson > Sent: Monday, March 27, 2006 3:46 PM > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] safe assign of int to enum > > I've wasted many hours doing most of these things, so I would be > interested in seeing your solution. > > At the very least, could you post some information on the > approach you > used to keep the forward/reverse mappings updated > automatically? Also, > were you able to do all of this without balooning the size of your > "enums"? I've never found a way to do that.... You make a good point. We should want sizeof(other_enum)==sizeof(c_enum). Not everyone needs to map between strings and enumerations

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Boost.Filesystem is there a way to lock files/directories and set their permissions?
by Elisha Berns 28 Mar '06

28 Mar '06

Hi, Is there a way to use Boost.Filesystem to lock file and directories and also set file and directory permissions? From the documentation there appears to be none, so can this feature be added to the next version? Elisha Berns e.berns(a)computer.org tel. (310) 556 - 8332 fax (310) 556 - 2839

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