def testAddSameSubjectIncreasesBackendSize(self):
"""
If an identical subject is added multiple times, the backend size
does not increase, because the backend subject store detect duplicates.
"""
dbParams = DatabaseParameters(landmarks=[AlphaHelix], trigPoints=[])
be = Backend()
be.configure(dbParams)
be.addSubject(AARead('id', 'FRRRFRRRF'), '0')
self.assertEqual(1, be.subjectCount())
be.addSubject(AARead('id', 'FRRRFRRRF'), '0')
self.assertEqual(1, be.subjectCount())
def testSaveRestoreNonEmpty(self):
"""
When asked to save and then restore a non-empty backend, the correct
backend must result.
"""
dbParams = DatabaseParameters(landmarks=[AlphaHelix, BetaStrand],
trigPoints=[Peaks, Troughs])
be = Backend()
be.configure(dbParams)
be.addSubject(AARead('id', 'FRRRFRRRFASAASA'), '0')
fp = StringIO()
be.save(fp)
fp.seek(0)
result = Backend.restore(fp)
self.assertEqual(be.subjectCount(), result.subjectCount())
self.assertEqual(be.d, result.d)
self.assertEqual(be.checksum(), result.checksum())
self.assertIs(None, be.dbParams.compare(result.dbParams))
