def retrieve_vocab():
"""Get the vocabulary data for the field.
Retrieves and returns the vocabulary. Upon failure, returns None.
"""
url = VOCABULARIES_URL.replace('all', 'all-verbose')
try:
return eval(urllib2.urlopen(url).read())
except:
return None
def test_get_vocabularies_multiple_attempts_succeeds(mock_urlopen, capsys):
"""Test vocabularies are fetched when not in cache."""
output = 'Exception caught while trying to retrieve vocabs: '
vocab_url = VOCABULARIES_URL.replace('all', 'all-verbose')
us.VOCAB_CACHE = {}
vocabularies = us.get_vocabularies()
assert mock_urlopen.call_count == 2
assert output in capsys.readouterr().out
assert vocabularies == VOCAB
assert us.VOCAB_CACHE == {vocab_url: VOCAB}
def get_vocabularies(self):
"""Get the vocabularies to pull the qualifiers from."""
# Timeout in seconds.
timeout = 15
socket.setdefaulttimeout(timeout)
# Create the ordered vocabulary URL.
vocab_url = VOCABULARIES_URL.replace('all', 'all-verbose')
# Request the vocabularies dictionary.
try:
vocab_dict = eval(urllib2.urlopen(vocab_url).read())
except:
raise UNTLStructureException('Could not retrieve the vocabularies')
return vocab_dict