def _validate_topic_similarities(cls, item):
"""Validate the topic similarities to be symmetric and have real
values between 0.0 and 1.0.
Args:
item: datastore_services.Model. TopicSimilaritiesModel
to validate.
"""
content = json.loads(item.content)
all_topics = list(content.keys())
data = '%s\n' % ','.join(all_topics)
for topics_to_compare in all_topics:
similarity_list = []
for topic in content[topics_to_compare]:
similarity_list.append(
python_utils.UNICODE(content[topics_to_compare][topic]))
if len(similarity_list):
data = data + '%s\n' % ','.join(similarity_list)
try:
recommendations_services.validate_topic_similarities(data)
except Exception as e:
cls._add_error(
'topic similarity check',
'Entity id %s: Topic similarity validation for content: %s '
'fails with error: %s' % (item.id, content, e))
def test_validate_default_similarities(self):
recommendations_services.validate_topic_similarities(
recommendations_services.DEFAULT_TOPIC_SIMILARITIES_STRING)