rem: do_check_eq(aItem, null); 
add: if (aItem != null) do_throw("Addon " + aAddonsEntry.id + " was detected"); 
context: function do_check_item(aItem, aVersion, aAddonsEntry) {  if (aAddonsEntry.installed) {    do_check_neq(aItem, null);    do_check_eq(aItem.version, aVersion);  } else {    do_check_eq(aItem, null);  }}
meta: 10520	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10520/28b923a90ca69e352af350ecedaf4dc4d3ed02bf/test_bug299716.js/buggy/toolkit/mozapps/extensions/test/unit/test_bug299716.js