Fix: App ranking TDD

src/game/lib/ranking_record_manager.js

@@ -23,21 +23,36 @@ RankingRecordManager.prototype.getCount = function() {
 }
 
 RankingRecordManager.prototype.getAt = function(index) {
+	if(typeof(this.rankingRecords[index]) == "undefined")
+		return null;
+
 	return this.rankingRecords[index];
 }
 
 RankingRecordManager.prototype.getRankAt = function(index) {
+	if(typeof(this.rankingRecords[index]) == "undefined")
+		return -1;
+
 	return this.rankingRecords[index].rank;
 }
 
 RankingRecordManager.prototype.getPlayerIDAt = function(index) {
+	if(typeof(this.rankingRecords[index]) == "undefined")
+		return -1;
+
 	return this.rankingRecords[index].playerID;
 }
 
 RankingRecordManager.prototype.getPlayerNameAt = function(index) {
+	if(typeof(this.rankingRecords[index]) == "undefined")
+		return "no data";
+
 	return this.rankingRecords[index].playerName;
 }
 
 RankingRecordManager.prototype.getBestRecordAt = function(index) {
+	if(typeof(this.rankingRecords[index]) == "undefined")
+		return -1;
+
 	return this.rankingRecords[index].bestRecord;
 }