def test_ensure_coverage_changes_status(self):
"""Verify that processing an item that has a preexisting
CoverageRecord can change the status of that CoverageRecord.
"""
always = AlwaysSuccessfulCoverageProvider("Always successful",
self.input_identifier_types,
self.output_source)
persistent = NeverSuccessfulCoverageProvider(
"Persistent failures", self.input_identifier_types,
self.output_source)
transient = TransientFailureCoverageProvider(
"Persistent failures", self.input_identifier_types,
self.output_source)
# Cover the same identifier multiple times, simulating all
# possible states of a CoverageRecord. The same CoverageRecord
# is used every time and the status is changed appropriately
# after every run.
c1 = persistent.ensure_coverage(self.identifier, force=True)
eq_(CoverageRecord.PERSISTENT_FAILURE, c1.status)
c2 = transient.ensure_coverage(self.identifier, force=True)
eq_(c2, c1)
eq_(CoverageRecord.TRANSIENT_FAILURE, c1.status)
c3 = always.ensure_coverage(self.identifier, force=True)
eq_(c3, c1)
eq_(CoverageRecord.SUCCESS, c1.status)
c4 = persistent.ensure_coverage(self.identifier, force=True)
eq_(c4, c1)
eq_(CoverageRecord.PERSISTENT_FAILURE, c1.status)
def test_ensure_coverage_transient_coverage_failure(self):
provider = TransientFailureCoverageProvider(
"Transient failure", self.input_identifier_types,
self.output_source)
failure = provider.ensure_coverage(self.identifier)
eq_([failure], self.identifier.coverage_records)
eq_(CoverageRecord.TRANSIENT_FAILURE, failure.status)
eq_("Oops!", failure.exception)
# Timestamp was not updated.
eq_([], self._db.query(Timestamp).all())