Get random values from an array

Question

I defined a new variable

Name        Value            Description
categories  (1, 2, 3, 4, 5)  my categories ids

and in my path i want to

Answer 1

For your scenario you could try to use the JSR233 components (Sampler, PreProcessor, PostProcessor) with a bit of java/groovy code.

E.g.:

• Define your data as you've done:

  Name        Value          
  categories  1,2,3,4,5
  

  (i.e. use comma as delimiter, no spaces before and after comma).

• Use the JSR233 Sampler / PreProcessor / PostProcessor with the following code:

  import java.util.Random;
  
  String[] categories = (vars.get("categories")).split(",");
  
  int idx = new Random().nextInt(categories.length);
  String category = (categories[idx]);
  
  vars.put("rnd_cat", category);
  

• Refer to the randomly picked category using ${rnd_cat}.