test_sftp_transport.py

class TestUnsupportedOperationExceptionTranslation(TestCaseWithSFTPServer):
    """Test that unsupported operation exception from Paramiko is correctly
    translated into TransportOperationNotSupported."""

    def test_sftp_unsupported_rename_operation(self):
        t = self.get_transport()

        e = self.assertRaises(
            errors.TransportOperationNotSupported("rename",
                          "unable to rename"),
                          t._translate_io_exception,
                          IOError("Operation unsupported"),
                          "unable to rename", operation="rename")
        self.assertEquals(e, "TransportOperationNotSupported: Transport operation is not supported: rename")