    @Test
    public void testInsertString() throws Exception {

        PythonIO lenOutput = PythonIO.builder()
                .name("len_input")
                .type(ValueType.INT64)
                .pythonType("int")
                .build();
        PythonIO pythonInput = PythonIO.builder()
                .type(ValueType.BYTES)
                .pythonType("bytes")
                .name("input")
                .build();
        PythonConfig pythonConfig = PythonConfig.builder()
                .ioOutput("input",pythonInput)
                .ioOutput("len_input",lenOutput)
                .build();

        Data input = Data.empty();
        PythonVariables pythonVariables = new PythonVariables();



        pythonVariables.add("input",PythonTypes.BYTES,"input".getBytes());
        pythonVariables.add("len_input",PythonTypes.INT,"input".getBytes().length);

        KonduitPythonUtils.insertBytesIntoPythonVariables(
                input,
                pythonVariables,
                "input"
                ,pythonConfig);
        String inputs = new String(input.getBytes("input"));
        assertEquals("input",inputs);
    }