Jmeter - Loop through the array defined from 'User Defined Variables'

Question

I try to Loop scenario for 2 times fetching data from array.

My use case is: I want to create user, for multiple countries, so instead of coping the case, I want to implement loop logic.

So far a tried like, but without success:

from here I want to fetch data

//JSR223 PreProcessor

String[] varArray = {"US", "UK"};
idx = Integer.parseInt(vars.get("loopCounter"))-1;
vars.put("myVariable", varArray[idx]);

counter logic:
Whole script, which is chain of multiple API calls, and i want to use fetch data, only a single call.

Result: I got null, if I try to use fetch variable.

Script37.groovy: 1: unexpected token: US @ line 1, column 22.
   String[] varArray = {"US", "UK"};

just edit my post, i got null for the fetched variable.

vlatko606
– vlatko606

2019-10-07 11:39:43 +00:00
Commented Oct 7, 2019 at 11:39 — vlatko606
– vlatko606, Commented Oct 7, 2019 at 11:39

Dmitri T · Accepted Answer · 2019-10-08 09:29:40Z

1

Define countries variable via User Defined Variables like:
In the Loop Controller you can dynamically get the array length via __groovy() function as:
```
${__groovy(vars.get('countries').split().size(),)}
```
Wherever you want inside the Loop Controller you can reference the "current" country for the given loop as:
```
${__groovy(vars.get('countries').split()[vars.get('__jm__Loop Controller__idx') as int],)}
```

answered Oct 8, 2019 at 9:29

Dmitri T

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Ori Marko · Accepted Answer · 2019-10-07 11:58:12Z

0

You need to use square brackets for java array when using Apache Groovy:

String[] varArray = ["US", "UK"];

If you were using Beanshell/Java scripting language, you code will work

String[] varArray = {"US", "UK"};

edited Oct 7, 2019 at 11:58

answered Oct 7, 2019 at 11:42

Ori Marko

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7 Comments

vlatko606 Over a year ago

OK, error is gone. Just test is not run two times (based on two fetched variable) What should be used in Loop controller variable field?

Ori Marko Over a year ago

@vlatko606 ${loopCounter} in Loop Count

Ori Marko Over a year ago

@vlatko606 didn't my answer helped? Loop count can be a number 2 in your case

vlatko606 Over a year ago

No, i still did not managed to tell 'Loop Controller' how much times to run.If i use ${loopCounter}, my 'Loop Controller' is not running at all. IF i use static number into 'Loop Controller' ex:2, it runs 2 times. What i am doing wrong?

Ori Marko Over a year ago

vars.put("myVariable", String.valueOf( varArray.length));

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