test: add 2015 day 22 tests

Author: marcelblijleven

tests/year_2015/test_day_22_2015.py

@@ -0,0 +1,9 @@
+from adventofcode.year_2015.day_22_2015 import fight
+
+
+def test_part_one():
+    assert fight(50, 500, 58, 9, False) == 1269
+
+
+def test_part_two():
+    assert fight(50, 500, 58, 9, True) == 1309