Ignore blank lines in the weight CSV import

wger/weight/helpers.py

@@ -58,6 +58,9 @@ def parse_weight_csv(request, cleaned_data):
 
     # Process the CSV items first
     for row in parsed_csv:
+        if not row:
+            continue
+
         try:
             parsed_date = make_aware(
                 datetime.datetime.strptime(row[0], cleaned_data['date_format'])

wger/weight/tests/test_csv_blank_lines.py

@@ -0,0 +1,40 @@
+# This file is part of wger Workout Manager.
+#
+# wger Workout Manager is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# wger Workout Manager is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with Workout Manager.  If not, see <http://www.gnu.org/licenses/>.
+
+# Standard Library
+from types import SimpleNamespace
+
+# Django
+from django.contrib.auth.models import User
+
+# wger
+from wger.core.tests.base_testcase import WgerTestCase
+from wger.weight.helpers import parse_weight_csv
+
+
+class WeightCsvBlankLinesTestCase(WgerTestCase):
+    """
+    Test that blank lines in the CSV are not reported as errors
+    """
+
+    def test_blank_lines_are_ignored(self):
+        request = SimpleNamespace(user=User.objects.get(username='test'))
+        weights, errors = parse_weight_csv(
+            request,
+            {'csv_input': '2031-01-01,80\n\n2031-01-02,81\n', 'date_format': '%Y-%m-%d'},
+        )
+
+        self.assertEqual(len(weights), 2)
+        self.assertEqual(errors, [])