ports(selector(p > a));');
  test_valid_supports_import('@import url("nonexist.css") supports(selector(p + a));');

  test_valid_supports_import('@import url("nonexist.css") supports(font-tech(color-colrv1));');
  test_valid_supports_import('@import url("nonexist.css") supports(font-format(opentype));');

  test_valid_supports_import('@import url(nonexist.css) supports(display:block);',
                             '@import url("nonexist.css") supports(display:block);');

  test_valid_supports_import('@impo