Bug 1044577 - Add xpcshell test to ensure that methods from SearchStaticData module can be overwritten. r=Paolo

toolkit/components/search/tests/xpcshell/test_SearchStaticData.js

@@ -17,4 +17,11 @@ function run_test() {
   do_check_true(SearchStaticData.getAlternateDomains("www.google.com")
                                 .every(d => d.startsWith("www.google.")));
   do_check_true(SearchStaticData.getAlternateDomains("google.com").length == 0);
+
+  // Test that methods from SearchStaticData module can be overwritten,
+  // needed for hotfixing.
+  let backup = SearchStaticData.getAlternateDomains;
+  SearchStaticData.getAlternateDomains = () => ["www.bing.fr"];;
+  do_check_matches(SearchStaticData.getAlternateDomains("www.bing.com"), ["www.bing.fr"]);
+  SearchStaticData.getAlternateDomains = backup;
 }