1 files changed, 6 insertions, 0 deletions
diff --git a/src/main/java/design/persistence/JSONLeagueDatabase.java b/src/main/java/design/persistence/JSONLeagueDatabase.java
index 8a55065..42fa000 100644
--- a/src/main/java/design/persistence/JSONLeagueDatabase.java
+++ b/src/main/java/design/persistence/JSONLeagueDatabase.java
@@ -30,6 +30,12 @@ public class JSONLeagueDatabase implements LeagueDatabase {
         return INSTANCE;
     }
 
+    // static instance strictly for testing, to not add data to leaguedb.json
+    static JSONLeagueDatabase testInstance(String filename) {
+        INSTANCE = new JSONLeagueDatabase(filename);
+        return INSTANCE;
+    }
+
     private final Map<Integer, League> cache;
     private final ObjectMapper mapper;
     private final File file;