fix test data loader

Author: dy-waltergrantward

tests/shared.py

@@ -30,14 +30,15 @@
 
 def load_test_data():
     """Load data out of /data folder so we can use it in our tests"""
+    prefix = f"{os.getcwd()}/tests/data"
     out = {}
-    for fn in os.listdir(f"{os.getcwd()}/data"):
+    for fn in os.listdir(prefix):
         key = fn.split('.')[0]
         if fn.endswith('.json'):
-            with open(f'{os.getcwd()}/data/{fn}') as f:
+            with open(f'{prefix}/{fn}') as f:
                 out[key] = json.load(f)
         if fn.endswith('.txt'):
-            with open(f'{os.getcwd()}/data/{fn}') as f:
+            with open(f'{prefix}/{fn}') as f:
                 out[key] = f.read()
     return out