diff --git a/tests/data.py b/tests/data.py
index 9972e2e..f6ef995 100644
--- a/tests/data.py
+++ b/tests/data.py
@@ -1,9 +1,13 @@
 import json
+from os.path import isfile
+from os import system as sys
 
 # Money
-# {username: balance}
+# {username: balance, ...}
 class money():
     def read():
+        if not isfile("money.json"):
+            sys('echo "{}" > money.json')
         with open('money.json', 'r') as openfile:
             data = json.load(openfile)
         return data
@@ -14,9 +18,11 @@ class money():
 
 # Mining + Registrations
 # Hash is encrypted!
-# [ {"PrevHash": "00043dsafd", "nonce": 1, "OpenKey": "762eagdfgtars5e34"}, ...]
+# [ {"PrevHash": "00043dsafd", "nonce": 1,"date":  , "OpenKey": "762eagdfgtars5e34"}, ...]
 class mine():
     def read():
+        if not isfile("mine.json"):
+            sys('echo "[]" > mine.json')
         with open('mine.json', 'r') as openfile:
             data = json.load(openfile)
         return data
@@ -30,6 +36,8 @@ class mine():
 # [ {"Payer": "user32532", "Receiver": "user64582", "OpenKey": "762eagdfgtars5e34", "PrevHash": "fsd2675ads"} , ...]
 class pay():
     def read():
+        if not isfile("pay.json"):
+            sys('echo "[]" > pay.json')
         with open('pay.json', 'r') as openfile:
             data = json.load(openfile)
         return data
@@ -42,6 +50,8 @@ class pay():
 # {"user32532": "762eagdfgtars5e34", ...}
 class keys():
     def read():
+        if not isfile("keys.json"):
+            sys('echo "{}" > keys.json')
         with open('keys.json', 'r') as openfile:
             data = json.load(openfile)
         return data