text: #include "fsio.h"
  #include "test.h"
  #include <stdlib.h>
  
  
  void test_impl()
  {
    char *extension = fsio_file_extension("temp");
  
    assert_true(extension == NULL);
  }
  
  
  int main()
  {
    test_run(test_impl);
  }
  
  