def test_is_persisted(self):
i = librato.Instrument(self.conn, 'test inst')
assert i.is_persisted() == False
i = librato.Instrument(self.conn, 'test inst', id=1234)
assert i.is_persisted() == True
def test_instrument_save_creates_new_record(self):
instrument_name = 'my instrument name'
i = librato.Instrument(self.conn, instrument_name)
assert i.id is None
i.save()
assert i.name == instrument_name