a question about cppunit

[QI Jiang]

hello, everyone. I have a question about cppunit
I has write some test class like this (on linux):

// TestA.cpp
class TestA : public CppUnit::TestFixture
{
    CPPUNIT_TEST_SUITE(TestA);
    CPPUNIT_TEST(testA);
    CPPUNIT_TEST_SUITE_END();

public:
    void testA();
};

// TestB.cpp
class TestB : public CppUnit::TestFixture
{
    CPPUNIT_TEST_SUITE(TestB);
    CPPUNIT_TEST(testB);
    CPPUNIT_TEST_SUITE_END();

public:
    void testB();
};

CPPUNIT_TEST_SUITE_REGISTRATION(TestA);
CPPUNIT_TEST_SUITE_REGISTRATION(TestB);

I compile TestA&TestB in a library libmytest.a, then I write a main.cpp
int main( int argc, char **argv)
{
    CppUnit::TextUi::TestRunner runner;
    CppUnit::TestFactoryRegistry& registry = CppUnit::TestFactoryRegistry::getRegistry();
    runner.addTest(registry.makeTest());
    bool wasSucessful = runner.run("", false);
    return wasSucessful;
}

I compile main.cpp use:
g++  -I./lib -I/usr/local/cppunit/include -c main.cpp -o main.o
g++ -o MyTest main.o -L./lib -lmytest -L/usr/local/cppunit/lib -lcppunit -static

then I run the test:

OK (0 tests)

you see, TestA & TestB is not running, what is the problem? but if I don't compile TestA&TestB in a library, just compile TestA.cpp,TestB.cpp&main.cpp together, it work:

OK (2 tests)

Sorry, because my english is not very well, hope you can understand what I mean:-)
Best regards

[Code Guru]

The commands you use to compile the code does not include compiling TestA.cpp or TestB.cpp.  You need to compile both of these into TestA.o and TestB.o and include them in the final command that links the executable.

Are you typing the commands manually or are you using a build tool like make?  I strongly suggest you use a makefile to help with compiling your test cases.

I hope this helps.

[QI Jiang]

thanks, Layne.
I compile use make, the Makefile like this:

part of Makefile for compile libmytest.a(TestA.cpp&TestB.cpp has been compile into the libmytest.a)

INCLUDE = -I$(CPPUNIT_ROOT)/include -I$(LOG4CPP_ROOT)/include
LIB     = -L$(CPPUNIT_ROOT)/lib -lcppunit \           -L$(LOG4CPP_ROOT)/lib -llog4cpp \           -lpthread -static

OBJS = $(patsubst %.cpp,%.o,$(wildcard *.cpp))

TARGET = libmytest.a

.PHONY:all clean

all:$(TARGET)

$(TARGET):$(OBJS)
    @rm -rf $@
    ar rcs $@ $^

%.o:%.cpp %.h
    $(CXX) $(CFLAGS) $(INCLUDE) -c $< -o $@

part of  Makefile for compile main.cpp

INCLUDE = -I./lib -I$(CPPUNIT_ROOT)/include -I$(LOG4CPP_ROOT)/include
LIB     = -L./lib -lmytest -L$(CPPUNIT_ROOT)/lib -lcppunit \           -L$(LOG4CPP_ROOT)/lib -llog4cpp \           -lpthread -static

OBJS = $(patsubst %.cpp,%.o,$(wildcard *.cpp))

TARGET = MyTest

.PHONY:all clean

all:$(TARGET)

$(TARGET):$(OBJS)
    $(CXX) -o $@ $^ $(LIB)
    @strip $@

%.o:%.cpp %.h
    $(CXX) $(CFLAGS) $(INCLUDE) -c $< -o $@

you see, I have compile TestA.cpp&TestB.cpp in libmytest.a, but it didnot work, I run the TestMain program, it always said "OK 0 (tests)".

[Marco]

Qi--

I think I see the problem: In your main.cpp, I don't see any code that forces
the linker to pull in anything from mylib, so none of your tests are linked
in, so the runner sees nothing to do.

I'd suggest moving the last two lines of TestB.cpp:

CPPUNIT_TEST_SUITE_REGISTRATION(TestA); 
CPPUNIT_TEST_SUITE_REGISTRATION(TestB); 

into the start of main.  (Of course, you'll need suitable .h files, etc.)

--zig