Jmeter testing: How to generate many unique files?

Question

I have question：How to generate many unique files ? In my testing: upload many files to gofast，but File content is not repeating. Thank you !

enter image description here

Answer 1

I don't think it's about JMeter, personally I would go for pre-generating test files using operating system built-in mechanisms like shell scripting and referencing them using Directory Listing Config because I want the test to be repeatable

However if you're looking for a JMeter-specific solution you can use JSR223 PreProcessor and Groovy language for creating the file with some content

Example simple code:

def file = new File('foo.txt') 
file << 'bar'
vars.put('myFile', file.getAbsolutePath())

The code:

• creates an empty file foo.txt in "bin" folder of your JMeter installation
• writes "bar" message to it
• stores the full path to the file into myFile JMeter Variable

So you should be able to refer to it as ${myFile} instead of hard-coding the file path.

P.S. There is a better way of taking screenshots