def test_blockchain_is_valid_schema_invalid(self):
err_message = '[Blockchain] Validation error.'
with self.assertRaises(BlockchainError) as err:
Blockchain.is_valid(self.invalid_chain)
self.assertIsInstance(err, BlockchainError)
self.assertIn(err_message, err.message)
def test_blockchain_is_valid_schema_valid(self):
Blockchain.is_valid(self.valid_chain)