unittest and WinMain

[ElfQT]

How can I run the unittest part in the code below?

I've tried several ways, but ni succes.
dmd -unittest tangoUnitTest.d
(I use "tango-0.99.4-bin-win32-dmd.1.024.zip".)

import tango.sys.win32.UserGdi;

extern (C) void rt_init( void delegate(Exception) dg = null );
extern (C) void rt_term( void delegate(Exception) dg = null );

extern (Windows)
int WinMain(HINSTANCE hInstance,
            HINSTANCE hPrevInstance,
            LPSTR lpCmdLine,
            int nCmdShow)
{
    rt_init();
    rt_term(); 

	return 0;
}

unittest
{
	assert(1==2);
}

ElfQT