diff --git a/advent/days/day__/data/test01.txt b/advent/days/day__/data/test01.txt
new file mode 100644
index 0000000..e69de29
diff --git a/advent/days/day__/test_solution.py b/advent/days/day__/test_solution.py
index 552dd3a..085310d 100644
--- a/advent/days/day__/test_solution.py
+++ b/advent/days/day__/test_solution.py
@@ -4,14 +4,14 @@ from .solution import day_num, part1, part2
 
 
 def test_part1():
-    data = utils.read_data(day_num, '')
+    data = utils.read_data(day_num, 'test01.txt')
     expected = None
     result = part1(data)
     assert result == expected
 
 
 def test_part2():
-    data = utils.read_data(day_num, '')
+    data = utils.read_data(day_num, 'test01.txt')
     expected = None
     result = part2(data)
     assert result == expected