Question

I’m sure I’ve already done this in the past but somehow I cannot figure out how 😉
So, here’s my problem:

I’m trying to create a JUnit test plan in which a HTTP request is modified each iteration by altering a specific parameter. So, for example in five iterations I want the following HTTP requests to be made:

http://localhost:8080/test/foo.html?id=1
http://localhost:8080/test/foo.html?id=2
http://localhost:8080/test/foo.html?id=3
http://localhost:8080/test/foo.html?id=4
...

I want to configure the identifier values globally for the test plan and use them within the HTTP request samplerer like this:

Path: /test/foo.html?id=${categoryId}

The question now: How do I configure the identifiers values globally (I do not want to use StringFromFile) and how do I reference them in the sampler?

Answer 1

There are several ways you can do this.

• If you’re only incrementing, you can use a counter element
• You can use any number of functions to calculate the value
• You can read from a CSV file, which is the same effect as “StringFromFile” but easier to customize and manipulate

Given you have an array of values you could:

• Try the pre-processor “User
  Parameters”, creating one entry
  for each user/loop
• Use a Beanshell
  script to create the array, select
  one at random and populate your
  variable

You reference them exactly as you have listed: ${varName}