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• Unit testing multiple conditions in an IF statement

  - by bwalk2895

  I have a chunk of code that looks something like this: function bool PassesBusinessRules() { bool meetsBusinessRules = false; if (PassesBusinessRule1 && PassesBusinessRule2 && PassesBusinessRule3) { meetsBusinessRules= true; } return meetsBusinessRules; } I believe there should be four unit tests for this particular function. Three to test each of the conditions in the if statement and ensure it returns false. And another test that makes sure the function returns true. Question: Should there actually be ten unit tests instead? Nine that checks each of the possible failure paths. IE: False False False False False True False True False And so on for each possible combination. I think that is overkill, but some of the other members on my team do not. The way I look at it is if BusinessRule1 fails then it should always return false, it doesn't matter if it was checked first or last.

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• boost::serialization with mutable members

  - by redmoskito

  Using boost::serialization, what's the "best" way to serialize an object that contains cached, derived values in mutable members, such that cached members aren't serialized, but on deserialization, they are initialized the their appropriate default. A definition of "best" follows later, but first an example: class Example { public: Example(float n) : num(n), sqrt_num(-1.0) {} float get_num() const { return num; } // compute and cache sqrt on first read float get_sqrt() const { if(sqrt_num < 0) sqrt_num = sqrt(num); return sqrt_num; } template <class Archive> void serialize(Archive& ar, unsigned int version) { ... } private: float num; mutable float sqrt_num; }; On serialization, only the "num" member should be saved. On deserialization, the sqrt_num member must be initialized to its sentinel value indicating it needs to be computed. What is the most elegant way to implement this? In my mind, an elegant solution would avoid splitting serialize() into separate save() and load() methods (which introduces maintenance problems). One possible implementation of serialize: template <class Archive> void serialize(Archive& ar, unsigned int version) { ar & num; sqrt_num = -1.0; } This handles the deserialization case, but in the serialization case, the cached value is killed and must be recomputed. Also, I've never seen an example of boost::serialize that explicitly sets members inside of serialize(), so I wonder if this is generally not recommended. Some might suggest that the default constructor handles this, for example: int main() { Example e; { std::ifstream ifs("filename"); boost::archive::text_iarchive ia(ifs); ia >> e; } cout << e.get_sqrt() << endl; return 0; } which works in this case, but I think fails if the object receiving the deserialized data has already been initialized, as in the example below: int main() { Example ex1(4); Example ex2(9); cout << ex1.get_sqrt() << endl; // outputs 2; cout << ex2.get_sqrt() << endl; // outputs 3; // the following two blocks should implement ex2 = ex1; // save ex1 to archive { std::ofstream ofs("filename"); boost::archive::text_oarchive oa(ofs); oa << ex1; } // read it back into ex2 { std::ifstream ifs("filename"); boost::archive::text_iarchive ia(ifs); ia >> ex2; } // these should be equal now, but aren't, // since Example::serialize() doesn't modify num_sqrt cout << ex1.get_sqrt() << endl; // outputs 2; cout << ex2.get_sqrt() << endl; // outputs 3; return 0; } I'm sure this issue has come up with others, but I have struggled to find any documentation on this particular scenario. Thanks!

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• Resources for Test Driven Development in Web Applications?

  - by HorusKol

  I would like to try and implement some TDD in our web applications to reduce regressions and improve release quality, but I'm not convinced at how well automated testing can perform with something as fluffy as web applications. I've read about and tried TDD and unit testing, but the examples are 'solid' and rather simple functionalities like currency converters, and so on. Are there any resources that can help with unit testing content management and publication systems? How about unit testing a shopping cart/store (physical and online products)? AJAX? Googling for "Web Test Driven Development" just gets me old articles from several years ago either covering the same examples of calculator-like function or discussions about why TDD is better than anything (without any examples).

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• Xuggler errors as soon as you import git

  - by user3241507

  I downloaded the Git straight into Eclipse for Xuggler (Here is the git). But as soon as it loads, there are so many errors I don't know what to do. Most of the errors are "cannot be resolved" type errors. Description Resource Path Location Type The import org.junit cannot be resolved AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 22 Java Problem The import junit cannot be resolved AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 28 Java Problem TestCase cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 30 Java Problem The import org.slf4j cannot be resolved AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 23 Java Problem The import org.slf4j cannot be resolved AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 24 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 94 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 97 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 102 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 103 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 86 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 89 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 90 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 93 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com /xuggle/ferry line 114 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 120 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 125 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 126 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 106 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 107 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 110 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 111 Java Problem The method assertTrue(String, boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 53 Java Problem The method assertTrue(String, boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 49 Java Problem Ignore cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 57 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 56 Java Problem Before cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 37 Java Problem LoggerFactory cannot be resolved AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 32 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 44 Java Problem The method getName() is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 40 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 81 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 75 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 85 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 82 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 64 Java Problem The method assertTrue(String, boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 61 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 72 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 69 Java Problem NameAwareTestClassRunner cannot be resolved BufferTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 44 Java Problem The method assertTrue(String, boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 167 Java Problem The method debug(String, int, String) in the type Logger is not applicable for the arguments (String, int) AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 166 Java Problem The method fail(String) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 163 Java Problem After cannot be resolved to a type BufferTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 47 Java Problem NameAwareTestClassRunner cannot be resolved to a type BufferTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 35 Java Problem The method debug(String, int, String) in the type Logger is not applicable for the arguments (String) AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 162 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 135 Java Problem Before cannot be resolved to a type BufferTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 41 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 131 Java Problem LoggerFactory cannot be resolved BufferTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 38 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 130 Java Problem The import org.junit cannot be resolved AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 22 Java Problem The import org.slf4j cannot be resolved AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 23 Java Problem The import org.slf4j cannot be resolved AudioSamplesTest.java /xuggle-xuggler-main/test /src/com/xuggle/xuggler line 24 Java Problem The import junit cannot be resolved AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 31 Java Problem TestCase cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 33 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 35 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 82 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 80 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 89 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 84 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 94 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 93 Java Problem Test cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 99 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 96 Java Problem Before cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 37 Java Problem LoggerFactory cannot be resolved AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 35 Java Problem The method getName() is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 40 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 40 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 60 Java Problem Test cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 43 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 67 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 62 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 157 Java Problem Test cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 161 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 154 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 155 Java Problem The method assertEquals(int, long) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 172 Java Problem The method assertEquals(long, long) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 173 Java Problem The method assertNotNull(IAudioSamples) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 168 Java Problem The method assertTrue(boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 171 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 124 Java Problem The method assertNotNull(IAudioSamples) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 129 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 117 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 119 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 145 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 150 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 141 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 143 Java Problem The method assertTrue(boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 216 Java Problem The method assertEquals(IBuffer.Type, IBuffer.Type) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 212 Java Problem The method assertTrue(boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 208 Java Problem The method assertNotNull(IAudioSamples) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 204 Java Problem The method assertEquals(IBuffer.Type, IBuffer.Type) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 218 Java Problem The method assertEquals(int, long) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 187 Java Problem The method assertTrue(boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 186 Java Problem The method assertNotNull(IAudioSamples) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 183 Java Problem Test cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 176 Java Problem Test cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 197 Java Problem The method assertEquals(long, long) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 192 Java Problem The method assertEquals(long, long) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 191 Java Problem The method assertEquals(long, long) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 188 Java Problem For a school project, I would like to build a simple live video stream program (final year in high school) like skype, except not as complicated. Can anyone help me solve these errors? or Is there another platform I can use that would be better/easier?

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• Wrapping a pure virtual method with multiple arguments with Boost.Python

  - by fallino

  Hello, I followed the "official" tutorial and others but still don't manage to expose this pure virtual method (getPeptide) : ms_mascotresults.hpp class ms_mascotresults { public: ms_mascotresults(ms_mascotresfile &resfile, const unsigned int flags, double minProbability, int maxHitsToReport, const char * unigeneIndexFile, const char * singleHit = 0); ... virtual ms_peptide getPeptide(const int q, const int p) const = 0; } ms_mascotresults.cpp #include <boost/python.hpp> using namespace boost::python; #include "msparser.hpp" // which includes "ms_mascotresults.hpp" using namespace matrix_science; #include <iostream> #include <sstream> struct ms_mascotresults_wrapper : ms_mascotresults, wrapper<ms_mascotresults> { ms_peptide getPeptide(const int q, const int p) { this->get_override("getPeptide")(q); this->get_override("getPeptide")(p); } }; BOOST_PYTHON_MODULE(ms_mascotresults) { class_<ms_mascotresults_wrapper, boost::noncopyable>("ms_mascotresults") .def("getPeptide", pure_virtual(&ms_mascotresults::getPeptide) ) ; } Here are the bjam's errors : /usr/local/boost_1_42_0/boost/python/object/value_holder.hpp:66: error: cannot declare field ‘boost::python::objects::value_holder<ms_mascotresults_wrapper>::m_held’ to be of abstract type ‘ms_mascotresults_wrapper’ ms_mascotresults.cpp:12: note: because the following virtual functions are pure within ‘ms_mascotresults_wrapper’: ... include/ms_mascotresults.hpp:334: note: virtual matrix_science::ms_peptide matrix_science::ms_mascotresults::getPeptide(int, int) const ms_mascotresults.cpp: In constructor ‘ms_mascotresults_wrapper::ms_mascotresults_wrapper()’: ms_mascotresults.cpp:12: error: no matching function for call to ‘matrix_science::ms_mascotresults::ms_mascotresults()’ include/ms_mascotresults.hpp:284: note: candidates are: matrix_science::ms_mascotresults::ms_mascotresults(matrix_science::ms_mascotresfile&, unsigned int, double, int, const char*, const char*) include/ms_mascotresults.hpp:109: note: matrix_science::ms_mascotresults::ms_mascotresults(const matrix_science::ms_mascotresults&) ... /usr/local/boost_1_42_0/boost/python/object/value_holder.hpp: In constructor ‘boost::python::objects::value_holder<Value>::value_holder(PyObject*) [with Value = ms_mascotresults_wrapper]’: /usr/local/boost_1_42_0/boost/python/object/value_holder.hpp:137: note: synthesized method ‘ms_mascotresults_wrapper::ms_mascotresults_wrapper()’ first required here /usr/local/boost_1_42_0/boost/python/object/value_holder.hpp:137: error: cannot allocate an object of abstract type ‘ms_mascotresults_wrapper’ ms_mascotresults.cpp:12: note: since type ‘ms_mascotresults_wrapper’ has pure virtual functions So I tried to change the constructor's signature by : BOOST_PYTHON_MODULE(ms_mascotresults) { //class_<ms_mascotresults_wrapper, boost::noncopyable>("ms_mascotresults") class_<ms_mascotresults_wrapper, boost::noncopyable>("ms_mascotresults", init<ms_mascotresfile &, const unsigned int, double, int, const char *,const char *>()) .def("getPeptide", pure_virtual(&ms_mascotresults::getPeptide) ) Giving these errors : /usr/local/boost_1_42_0/boost/python/object/value_holder.hpp:66: error: cannot declare field ‘boost::python::objects::value_holder<ms_mascotresults_wrapper>::m_held’ to be of abstract type ‘ms_mascotresults_wrapper’ ms_mascotresults.cpp:12: note: because the following virtual functions are pure within ‘ms_mascotresults_wrapper’: include/ms_mascotresults.hpp:334: note: virtual matrix_science::ms_peptide matrix_science::ms_mascotresults::getPeptide(int, int) const ... ms_mascotresults.cpp:24: instantiated from here /usr/local/boost_1_42_0/boost/python/object/value_holder.hpp:137: error: no matching function for call to ‘ms_mascotresults_wrapper::ms_mascotresults_wrapper(matrix_science::ms_mascotresfile&, const unsigned int&, const double&, const int&, const char* const&, const char* const&)’ ms_mascotresults.cpp:12: note: candidates are: ms_mascotresults_wrapper::ms_mascotresults_wrapper(const ms_mascotresults_wrapper&) ms_mascotresults.cpp:12: note: ms_mascotresults_wrapper::ms_mascotresults_wrapper() If I comment the virtual function getPeptide in the .hpp, it builds perfectly with this constructor : class_<ms_mascotresults>("ms_mascotresults", init<ms_mascotresfile &, const unsigned int, double, int, const char *,const char *>() ) So I'm a bit lost...

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• Boost Serialization Library upgrade

  - by Konstantin

  Hello! How do I know that I can safely upgrade Boost Serialization Library on a production system without breaking compatibility with the existing data ? Is there any test that I should perform in order to be sure that all data stored in the binary format by previous version of the library will be successfully read by the new one ? Does Boost Serialization library itself guarantee some sort of compatibility between versions ?

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• What is the Oracle Utilities Application Framework?

  - by Anthony Shorten

  The Oracle Utilities Application Framework is a reusable, scalable and flexible java based framework which allows other products to be built, configured and implemented in a standard way. Note: Even though the Framework is built in java it can be integrated with COBOL based extensions for backward compatibility. When Oracle Utilities Customer Care & Billing was migrated from V1 to V2, it was decided that the technical aspects of that product be separated to allow for reuse and independence from technical issues. The idea was that all the technical aspects would be concentrated in this separate product (i.e. a framework) and allow all products using the framework to concentrate on delivering superior functionality. The product was named the Oracle Utilities Application Framework (oufw is the product code). The technical components are contained in the Oracle Utilities Application Framework which can be summarized as follows: Metadata - The Oracle Utilities Application Framework is responsible for defining and using the metadata to define the runtime behavior of the product. All the metadata definition and management is contained within the Oracle Utilities Application Framework. UI Management - The Oracle Utilities Application Framework is responsible for defining and rendering the pages and responsible for ensuring the pages are in the appropriate format for the locale. Integration - The Oracle Utilities Application Framework is responsible for providing the integration points to the architecture. Refer to the Oracle Utilities Application Framework Integration Overview for more details Tools - The Oracle Utilities Application Framework provides a common set of facilities and tools that can be used across all products. Technology - The Oracle Utilities Application Framework is responsible for all technology standards compliance, platform support and integration. There are a number of products from the Tax and Utilities Global Business Unit as well as from the Financial Services Global Business Unit that are built upon the Oracle Utilities Application Framework. These products require the Oracle Utilities Application Framework to be installed first and then the product itself installed onto the framework to complete the installation process. There are a number of key benefits that the Oracle Utilities Application Framework provides to these products: Common facilities - The Oracle Utilities Application Framework provides a standard set of technical facilities that mean that products can concentrate in the unique aspects of their markets rather than making technical decisions. Common methods of configuration - The Oracle Utilities Application Framework standardizes the technical configuration process for a product. Customers can effectively reuse the configuration process across products. Multi-lingual and Multi-platform - The Oracle Utilities Application Framework allows the products to be offered in more markets and across multiple platforms for maximized flexibility. Common methods of implementation - The Oracle Utilities Application Framework standardizes the technical aspects of a product implementation. Customers can effectively reuse the technical implementation process across products. Quicker adoption of new technologies - As new technologies and standards are identified as being important for the product line, they can be integrated centrally benefiting multiple products. Cross product reuse - As enhancements to the Oracle Utilities Application Framework are identified by a particular product, all products can potentially benefit from the enhancement. Note: Use of the Oracle Utilities Application Framework does not preclude the introduction of product specific technologies or facilities to satisfy market needs. The framework minimizes the need and assists in the quick integration of a new product specific piece of technology (if necessary). The Framework is not available as a product itself and is bundled with Tax and Utilities Global Business Unit prodicts. At the present time the following products are on the Framework: Oracle Utilities Customer Care And Billing (V2 and above) Oracle Enterprise Taxation Management (V2 and above) Oracle Utilities Business Intelligence (V2 and above) Oracle Utilities Mobile Workforice Management (V2 and above)

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• Simplest way to get current time in current timezone using boost::date_time ?

  - by timday

  If I do date +%H-%M-%S on the commandline (Debian/Lenny), I get a user-friendly (not UTC, not DST-less, the time a normal person has on their wristwatch) time printed. What's the simplest way to obtain the same thing with boost::date_time ? If I do this: std::ostringstream msg; boost::local_time::local_date_time t = boost::local_time::local_sec_clock::local_time( boost::local_time::time_zone_ptr() ); boost::local_time::local_time_facet* lf( new boost::local_time::local_time_facet("%H-%M-%S") ); msg.imbue(std::locale(msg.getloc(),lf)); msg << t; Then msg.str() is an hour earlier than the time I want to see. I'm not sure whether this is because it's showing UTC or local timezone time without a DST correction (I'm in the UK). What's the simplest way to modify the above to yield the DST corrected local timezone time ? I have an idea it involves boost::date_time:: c_local_adjustor but can't figure it out from the examples.

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• If you should only have one assertion per test; how to test multiple inputs?

  - by speg

  I'm trying to build up some test cases, and have read that you should try and limit the number of assertions per test case. So my question is, what is the best way to go about testing a function w/ multiple inputs. For example, I have a function that parses a string from the user and returns the number of minutes. The string can be in the form "5w6h2d1m", where w, h, d, m correspond to the number of weeks, hours, days, and minutes. If I wanted to follow the '1 assertion per test rule' I'd have to make multiple tests for each variation of input? That seems silly so instead I just have something like: self.assertEqual(parse_date('5m'), 5) self.assertEqual(parse_date('5h'), 300) self.assertEqual(parse_date('5d') ,7200) self.assertEqual(parse_date('1d4h20m'), 1700) In the one test case. Is there a better way?

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• Unittest test case only touches the file name

  - by Chen OT

  I was told that unittest is fast and the tests which touches DB, across network, and touches FileSystem are not unittest. In one of my testcases, its input are the file names (amount about 300~400) under a specific folder. Although these input are part of file system, the execution time of this test is very fast. Should I moved this test, which is fast but touches file system, to higher level test?

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• unit test SqlCacheDependency

  - by hotyi

  I'm using SqlCacheDependency in asp.net application, and i'm using HttpRuntime.Cache to cache items. and the application works well only when i debug the web application, but the HttpRuntime.Cache will not be notified when some data changes from the db when i debug the application in the unit test mode. Anyone have suggestions to make HttpRuntime.Cache to work under unit test?

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• Are ActiveRecord:Observer callbacks called during unit testing?

  - by Frank

  I'm trying to unit test an observer in rails but none of its callbacks are being invoked. I'm sure I have something configured incorrectly but just to be sure I was wondering if this may be a Rails limitation during unit testing. I've looked at the docs and they don't mention anything.

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• Parsing string, with Boost Spirit 2, to fill data in user defined struct

  - by Surya

  I'm using Boost.Spirit which was distributed with Boost-1.42.0 with VS2005. My problem is like this. I've this string which was delimted with commas. The first 3 fields of it are strings and rest are numbers. like this. String1,String2,String3,12.0,12.1,13.0,13.1,12.4 My rule is like this qi::rule<string::iterator, qi::skip_type> stringrule = *(char_ - ',') qi::rule<string::iterator, qi::skip_type> myrule= repeat(3)[*(char_ - ',') >> ','] >> (double_ % ',') ; I'm trying to store the data in a structure like this. struct MyStruct { vector<string> stringVector ; vector<double> doubleVector ; } ; MyStruct var ; I've wrapped it in BOOST_FUSION_ADAPT_STRUCTURE to use it with spirit. BOOST_FUSION_ADAPT_STRUCT (MyStruct, (vector<string>, stringVector) (vector<double>, doubleVector)) My parse function parses the line and returns true and after qi::phrase_parse (iterBegin, iterEnd, myrule, boost::spirit::ascii::space, var) ; I'm expecting var.stringVector and var.doubleVector are properly filled. but it is not the case. What is going wrong ? Thanks in advance, Surya

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• Cann Boost Program_options separate comma separated argument values

  - by lrm

  If my command line is: > prog --mylist=a,b,c Can Boost's program_options be setup to see three distinct argument values for the mylist argument? I have configured program_options as: namespace po = boost::program_options; po::options_description opts("blah") opts.add_options() ("mylist", std::vector<std::string>>()->multitoken, "description"); po::variables_map vm; po::store(po::parse_command_line(argc, argv, opts), vm); po::notify(vm); When I check the value of the mylist argument, I see one value as a,b,c. I'd like to see three distinct values, split on comma. This works fine if I specify the command line as: > prog --mylist=a b c or > prog --mylist=a --mylist=b --mylist=c Is there a way to configure program_options so that it sees a,b,c as three values that should each be inserted into the vector, rather than one? I am using boost 1.41, g++ 4.5.0 20100520, and have enabled c++0x experimental extensions.

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• Thread-safty of boost RNG

  - by Maciej Piechotka

  I have a loop which should be nicely pararellized by insering one openmp pragma: boost::normal_distribution<double> ddist(0, pow(retention, i - 1)); boost::variate_generator<gen &, BOOST_TYPEOF(ddist)> dgen(rng, ddist); // Diamond const std::uint_fast32_t dno = 1 << i - 1; // #pragma omp parallel for for (std::uint_fast32_t x = 0; x < dno; x++) for (std::uint_fast32_t y = 0; y < dno; y++) { const std::uint_fast32_t diff = size/dno; const std::uint_fast32_t x1 = x*diff, x2 = (x + 1)*diff; const std::uint_fast32_t y1 = y*diff, y2 = (y + 1)*diff; double avg = (arr[x1][y1] + arr[x1][y2] + arr[x2][y1] + arr[x2][y2])/4; arr[(x1 + x2)/2][(y1 + y2)/2] = avg + dgen(); } (unless I make an error each execution does not depend on others at all. Sorry that not all of code is inserted). However my question is - are boost RNG thread-safe? They seems to refer to gcc code for gcc so even if gcc code is thread-safe it may not be the case for other platforms.

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• Problem with Boost::Asio for C++

  - by Martin Lauridsen

  Hi there, For my bachelors thesis, I am implementing a distributed version of an algorithm for factoring large integers (finding the prime factorisation). This has applications in e.g. security of the RSA cryptosystem. My vision is, that clients (linux or windows) will download an application and compute some numbers (these are independant, thus suited for parallelization). The numbers (not found very often), will be sent to a master server, to collect these numbers. Once enough numbers have been collected by the master server, it will do the rest of the computation, which cannot be easily parallelized. Anyhow, to the technicalities. I was thinking to use Boost::Asio to do a socket client/server implementation, for the clients communication with the master server. Since I want to compile for both linux and windows, I thought windows would be as good a place to start as any. So I downloaded the Boost library and compiled it, as it said on the Boost Getting Started page: bootstrap .\bjam It all compiled just fine. Then I try to compile one of the tutorial examples, client.cpp, from Asio, found (here.. edit: cant post link because of restrictions). I am using the Visual C++ compiler from Microsoft Visual Studio 2008, like this: cl /EHsc /I D:\Downloads\boost_1_42_0 client.cpp But I get this error: /out:client.exe client.obj LINK : fatal error LNK1104: cannot open file 'libboost_system-vc90-mt-s-1_42.lib' Anyone have any idea what could be wrong, or how I could move forward? I have been trying pretty much all week, to get a simple client/server socket program for c++ working, but with no luck. Serious frustration kicking in. Thank you in advance.

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• Can Boost Program_options separate comma separated argument values

  - by lrm

  If my command line is: > prog --mylist=a,b,c Can Boost's program_options be setup to see three distinct argument values for the mylist argument? I have configured program_options as: namespace po = boost::program_options; po::options_description opts("blah") opts.add_options() ("mylist", std::vector<std::string>>()->multitoken, "description"); po::variables_map vm; po::store(po::parse_command_line(argc, argv, opts), vm); po::notify(vm); When I check the value of the mylist argument, I see one value as a,b,c. I'd like to see three distinct values, split on comma. This works fine if I specify the command line as: > prog --mylist=a b c or > prog --mylist=a --mylist=b --mylist=c Is there a way to configure program_options so that it sees a,b,c as three values that should each be inserted into the vector, rather than one? I am using boost 1.41, g++ 4.5.0 20100520, and have enabled c++0x experimental extensions.

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• Implementing unit testing at a company that doesn't do it

  - by Pete

  My company's head of software development just "resigned" (i.e. fired) and we are now looking into improving the development practices at our company. We want to implement unit testing in all software created from here on out. Feedback from the developers is this: We know testing is valuable But, you are always changing the specs so it'd be a waste of time And, your deadlines are so tight we don't have enough time to test anyway Feedback from the CEO is this: I would like our company to have automated testing, but I don't know how to make it happen We don't have time to write large specification documents How do developers get the specs now? Word of mouth or PowerPoint slide. Obviously, that's a big problem. My suggestion is this: Let's also give the developers a set of test data and unit tests That's the spec. It's up to management to be clear and quantitative about what it wants. The developers can put it whatever other functionality they feel is needed and it need not be covered by tests Well, if you've ever been in a company that was in this situation, how did you solve the problem? Does this approach seem reasonable?

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• Makefile can not find boost libraries installed by macports

  - by user327502

  I just installed boost 1.42.0 from macports using sudo port install boost. Everything worked fine. Now I have a project that I'm trying to build using a makefile. Everything builds fine until it comes to the file that needs the boost library. It says: src/graph.h:20:42: error: boost/graph/adjacency_list.hpp: No such file or directory That file is actually located in two places: /opt/local/include/boost/graph/adjacency_list.hpp and /opt/local/var/macports/software/boost/1.42.0_0/opt/local/include/boost/graph/adjacency_list.hpp In the file src/graph.h where it's looking for boost/graph/adjacency_list.hpp, the include statement is here: #include<boost/graph/adjacency_list.hpp> How do I make this work?

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• [C++] Boost test: catch user defined exceptions

  - by user231536

  If I have user defined exceptions in my code, I can't get Boost test to consider them as failures. For example, BOOST_AUTO_TEST_CASE_EXPECTED_FAILURES(MyTest,1) BOOST_AUTO_TEST_CASE(MyTest) { // code which throws user defined exception, not derived from std::exception. } I get a generic message: Caught exception: .... unknown location(0):.... It does not recognize this error as a failure since it is not a std::exception. So it does not honor the expected_failures clause. How do I enforce that the piece of code should always throw an exception? THis seems to be a useful thing to want. In case future code changes cause the code to pass and the exception is not thrown, I want to know that.

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• Managing test data for Junit tests.

  - by nobody

  Hi, We are facing one problem in managing test data(xmls which is used to create mock objects). The data which we have currently has been evolved over a long period of time. Each time we add a new functionality or test case we add new data to test that functionality. Now, the problem is when the business requirement changes the format( like length or format of a variable) or any change which the test data doesn't support , we need to change the entire test data which is 100s of MBs in size. Could anyone suggest a better method or process to overcome this problem? Any suggestion would be appreciated.

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• How would you TDD the functionality of getting the corresponding process of a running windows service?

  - by Matt Spinelli

  Purpose Over the last year or more I've been learning unit testing via books I've read recently like The Art of Unit Testing, Working Effectively with Legacy Code, and others. I've also been using unit tests, mocking frameworks, and the like, periodically at work and definitely see the value. However, I'm still having a hard time wrapping my mind around TDD (as opposed to TAD) when the situation calls for code that is gong to mostly use external API calls. Problem to solve Get the process associated with a windows service using the service name. example: Function GetProcess(ByVal serviceName As String) As Process Rules Show each major iteration in production & test code using TDD No need to see any other code or configuration that is required to get things to run. Just curious about the interfaces, concrete classes, and test methods. C# or VB.NET Must use the .Net framework regarding services/processes (i.e. System.Diagnostics.Process) Test Frameworks: Nunit or MSTest Isolation Frameworks: Moq, Rhino Mock, or Microsoft Moles Must write true unit tests (no integration tests) Additional notes As far as I can tell there are two approaches design wise. Use an Inversion of Control approach along with using the Adapter and/or Facade patterns to wrap the underlying .net framework objects dealing with processes and services. Keep the .net framework code in the class containing the Get Process method and use code detouring (interception) via Microsoft Moles to isolate the hard dependencies from the method under test.

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• MVC moq unit test the object before RedirecToAction()

  - by Daoming Yang

  I want to test the data inside the "item" object before it redirect to another action. public ActionResult WebPageEdit(WebPage item, FormCollection form) { if (ModelState.IsValid) { item.Description = Utils.CrossSiteScriptingAttackCheck(item.Description); item.Content = Utils.CrossSiteScriptingAttackCheck(item.Content); item.Title = item.Title.Trim(); item.DateUpdated = DateTime.Now; // Other logic stuff here webPagesRepository.Save(item); return RedirectToAction("WebPageList"); } Here is my Test method: [Test] public void Admin_WebPageEdit_Save() { var controller = new AdminController(); controller.webPagesRepository = DataMock.WebPageDataInit(); controller.categoriesRepository = DataMock.WebPageCategoryDataInit(); FormCollection form = DataMock.CreateWebPageFormCollection(); RedirectToRouteResult actionResult = (RedirectToRouteResult)controller.WebPageEdit(webPagesRepository.Get(1), form); Assert.IsNotNull(actionResult); Assert.AreEqual("WebPageList", actionResult.RouteValues["action"]); var item = ((ViewResult)controller.WebPageEdit(webPagesRepository.Get(1), form)).ViewData.Model as WebPage; Assert.NotNull(item); Assert.AreEqual(2, item.CategoryID); } It failed at this line: var item = ((ViewResult)controller.WebPageEdit(webPagesRepository.Get(1), form)).ViewData.Model as WebPage; I am thinking about is there any ways to test the "item" object before it redirect to other actions?

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• Entity Framework 4.0: Optimal and horrible SQL

  - by DigiMortal

  Lately I had Entity Framework 4.0 session where I introduced new features of Entity Framework. During session I found out with audience how Entity Framework 4.0 can generate optimized SQL. After session I also showed guys one horrible example about how awful SQL can be generated by Entity Framework. In this posting I will cover both examples. Optimal SQL Before going to code take a look at following model. There is class called Event and I will use this class in my query. Here is the LINQ To Entities query that uses small anonymous type. var query = from e in _context.Events             select new { Id = e.Id, Title = e.Title }; Debug.WriteLine(((ObjectQuery)query).ToTraceString()); Running this code gives us the following SQL. SELECT      [Extent1].[event_id] AS [event_id],      [Extent1].[title] AS [title]  FROM [dbo].[events] AS [Extent1] This is really small – no additional fields in SELECT clause. Nice, isn’t it? Horrible SQL Ayende Rahien blog shows us darker side of Entiry Framework 4.0 queries. You can find comparison betwenn NHibernate, LINQ To SQL and LINQ To Entities from posting What happens behind the scenes: NHibernate, Linq to SQL, Entity Framework scenario analysis. In this posting I will show you the resulting query and let you think how much better it can be done. Well, it is not something we want to see running in our servers. I hope that EF team improves generated SQL to acceptable level before Visual Studio 2010 is released. There is also morale of this example: you should always check out the queries that O/R-mapper generates. Behind the curtains it may silently generate queries that perform badly and in this case you need to optimize you data querying strategy. Conclusion Entity Framework 4.0 is new product with a lot of new features and it is clear that not everything is 100% super in its first release. But it still great step forward and I hope that on 12.04.2010 we have new promising O/R-mapper available to use in our projects. If you want to read more about Entity Framework 4.0 and Visual Studio 2010 then please feel free to follow this link to list of my Visual Studio 2010 and .NET Framework 4.0 postings.

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• No test coverage files generated for Unit Test bundle in Xcode

  - by John Gallagher

  The Problem I've got a Cocoa project on the desktop and I'm using Xcode 3.2.1 on Snow Leopard 10.6.2. I want to generate code coverage files for my Unit Test Target in Xcode. What I've Tried As articles like this one suggest, I've adjusted the build settings to: “Generate Test Coverage Files” checked “Instrument Program Flow” checked “-lgcov” added to “Other Linker Flags” I've also set the Run Script section of the test target to have the following: # Run the unit tests in this test bundle. "${SYSTEM_DEVELOPER_DIR}/Tools/RunUnitTests" # Run gcov on the framework getting tested if [ "${CONFIGURATION}" = 'Coverage' ]; then FRAMEWORK_NAME=LapsusInterpretationEngine FRAMEWORK_OBJ_DIR=${OBJROOT}/${FRAMEWORK_NAME}.build/${CONFIGURATION}/EngineTests.build/Objects-normal/${NATIVE_ARCH} mkdir -p coverage pushd coverage find ${OBJROOT} -name *.gcda -exec gcov -o ${FRAMEWORK_OBJ_DIR} {} \; popd fi Since my Framework name is LapsusInterpretationEngine but my target is named EngineTests, I put this directly into the FRAMEWORK_OBJ_DIR but this didn't seem to help. I've tried cleaning before building. I've made sure all the above build settings apply to both the Unit Test Target and the Application Target. What I Get No .gcda or .gcno files anywhere in the build directory I'm using. I point CoverStory to the Objects-normal directory in my builds folder and it complains that there's nothing there for it to read. I must be doing something really obvious wrong. Anyone any ideas? I have tried the "EngineTests.build" directory being ${FRAMEWORK_NAME} and this gives the same results.

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