wxZlibOutputStream zstream_out(fstream_out, compress_level, output_flag);
CPPUNIT_ASSERT_MESSAGE("Could not create the output stream", zstream_out.IsOk());
wxZlibOutputStream zstream_out(fstream_out, compress_level, output_flag);
CPPUNIT_ASSERT_MESSAGE("Could not create the output stream", zstream_out.IsOk());