def testAddNewBackend(self):
"""
When a new backend is added, the returned parameters must be those of
the database.
"""
dbParams1 = DatabaseParameters(landmarks=[AlphaHelix],
trigPoints=[Peaks])
db = Database(dbParams1)
name, checksum, dbParams2 = db.addBackend()
self.assertIs(dbParams1, dbParams2)
def testReconnectSameNameBackend(self):
"""
If a backend tries to connect but re-uses an existing backend name,
a BackendException must be raised.
"""
dbParams = DatabaseParameters(landmarks=[AlphaHelix])
db = Database(dbParams)
name, checksum, dbParams = db.addBackend()
error = "^Backend %r is already connected\.$" % name
six.assertRaisesRegex(self, BackendException, error, db.addBackend,
name)