Spread lest tests over multiple files

lest-module-1.cpp

// C++11 - use multiple source files.

#include "lest.hpp"

lest::tests & specifications() 
{ 
    static lest::tests tests; 
    return tests; 
}

int main( int argc, char * argv[] )
{
    return lest::run( specifications(), lest::texts( argv + 1, argv + argc ) /*, std::cout */ );
}

// cl -nologo -W3 -EHsc -I.. -Felest-module.exe lest-module-1.cpp lest-module-2.cpp lest-module-3.cpp && lest-module
// g++ -Wall -Wextra -std=c++11 -I.. -o lest-module.exe lest-module-1.cpp lest-module-2.cpp lest-module-3.cpp && lest-module

lest-module-2.cpp

// C++11 - use multiple source files.

#include "lest.hpp"
#include "lest-module.hpp"

const lest::test module[] = {

    CASE( "A passing test" "[pass]" ) 
    {
        EXPECT( 42 == 42 );
    }
};

extern lest::tests & specifications();

lest_ADD_MODULE( specifications(), module )

lest-module-3.cpp

// C++11 - use multiple source files.

#include "lest.hpp"
#include "lest-module.hpp"

const lest::test module[] = {

    CASE( "A failing test" "[fail]" ) 
    {
        EXPECT( 42 == 7 );
    }
};

extern lest::tests & specifications();

lest_ADD_MODULE( specifications(), module )

lest-module.hpp

// C++11 - use multiple source files.

#include "lest.hpp"

#define lest_ADD_MODULE( collection, module ) \
    namespace { lest::module_registrar _( collection, module ); }
    
namespace lest {

struct module_registrar
{
    template <std::size_t N>
    module_registrar( lest::tests & collection, test const (&module)[N] )
    {
        collection.insert( collection.end(), std::begin( module ), std::end( module ) );
    }
};

}