Adding javascript function to jMeter

Question

I am trying to get a javascript function work with jMeter test plan.
It is used to decode a string.

function decode(str) {
    var strtodecrypt = str.split("-");
    var msglength = strtodecrypt.length;
    decrypted_message = "";
    for (var position = 0; position < msglength; position++) {
        ascii_num_byte_to_decrypt = strtodecrypt[position];
        ascii_num_byte_to_decrypt = ascii_num_byte_to_decrypt / 2;
        ascii_num_byte_to_decrypt = ascii_num_byte_to_decrypt - 5;
        decrypted_byte = String.fromCharCode(ascii_num_byte_to_decrypt);
        decrypted_message += decrypted_byte;
    }
    return decrypted_message;
}

I have tried to use BSF Post processor, but don't know what is the exact syntax i need to use. I want to use this function to post a jMeter variable as a parameter in one of the HTTP request.

Edit: I am currently using following script in the BSF post processor. userResponse does not show in debub sampler. Do i need to add any reference to use String.fromCharCode(ascii_num_byte_to_decrypt)?

var str="142";
var strtodecrypt = str.split("-");
var msglength = strtodecrypt.length;
decrypted_message = "";

for (var position = 0; position < msglength; position++) {
    ascii_num_byte_to_decrypt = strtodecrypt[position];
    ascii_num_byte_to_decrypt = ascii_num_byte_to_decrypt / 2;
    ascii_num_byte_to_decrypt = ascii_num_byte_to_decrypt - 5;
    decrypted_byte = String.fromCharCode(ascii_num_byte_to_decrypt);
    decrypted_message += decrypted_byte;
}

vars.put("userResponse",decrypted_message);

score 5 · Accepted Answer · answered Feb 13 '13 at 12:45

5

You can try to use as well JSR223 Sampler with script language set to javascript (Language: JavaScript).
It will process your script (2nd version), variable set and available in debug Sampler results.

answered Feb 13 '13 at 12:45

Aliaksandr Belik

12,725
6
64
90

score 0 · Answer 2 · answered Jun 02 '15 at 15:02

0

You should WebDriver plugin for that. It can be configured as IE/Firefox/Chrome or even Selenium.

The documentation here

This is how you configure IE web driver

answered Jun 02 '15 at 15:02

d.popov

4,175
1
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score 0 · Answer 3 · edited Jun 20 '20 at 09:12

For anyone reading this years later:

Calling javascript function is possible from a BSF PostProcessor.

You need to define your function higher up in the file than where it is used.

This means this works:

function decode(str) {
    (...... do stuff......)
    return something;
}

var bar = decode("foo");
vars.put("someVariableName", bar);

However this doesn't work:

var bar = decode("foo"); // <--- Compile error, undefined function 'decode'
vars.put("someVariableName", bar);

function decode(str) {
    (...... do stuff......)
    return something;
}

Adding javascript function to jMeter

3 Answers3

Calling javascript function is possible from a BSF PostProcessor.

Linked