Adds Zotero.FeedReader tests

test/content/runtests.js

@@ -7,6 +7,9 @@ var ZoteroUnit = Components.classes["@mozilla.org/commandlinehandler/general-sta
 
 var dump = ZoteroUnit.dump;
 
+// Mocha HTML reporter doesn't show deepEqual diffs, so we change this.
+chai.config.truncateThreshold = 0
+
 function quit(failed) {
 	// Quit with exit status
 	if(!failed) {

test/content/support.js

@@ -435,6 +435,10 @@ function getTestDataDirectory() {
 	       QueryInterface(Components.interfaces.nsIFileURL).file;
 }
 
+function getTestDataItemUrl(path) {
+	return OS.Path.join("resource://zotero-unit-tests/data", path);
+}
+
 /**
  * Returns an absolute path to an empty temporary directory
  * (i.e., test/tests/data)