Fix woolies parsing issue

hotprices_au/units.py

@@ -61,15 +61,18 @@ def parse_str_unit(unit_str):
         if matched:
             try:
                 count_group = matched.group('count')
-                # We might match on 4x4 and not just 4, so we split by x, type case each and then multiply them
-                if 'x' in count_group:
-                    counts = count_group.split('x')
+                if count_group is None:
+                    count = 1
                 else:
-                    counts = [count_group]
-                counts = [float(c) for c in counts]
-                count = 1
-                for count_elem in counts:
-                    count *= count_elem
+                    # We might match on 4x4 and not just 4, so we split by x, type case each and then multiply them
+                    if count_group and 'x' in count_group:
+                        counts = count_group.split('x')
+                    else:
+                        counts = [count_group]
+                    counts = [float(c) for c in counts]
+                    count = 1
+                    for count_elem in counts:
+                        count *= count_elem
             except IndexError:
                 count = 1
 

tests/stores/test_woolies.py

@@ -166,6 +166,11 @@ def test_get_canonical():
     assert can_item['unit'] == 'ml'
     assert can_item['quantity'] == 9000
 
+    item = get_item(PackageSize='200ml X Pack')
+    can_item = woolies.get_canonical(item, today)
+    assert can_item['unit'] == 'ml'
+    assert can_item['quantity'] == 200
+
 
 if __name__ == '__main__':
     test_get_canonical()