Assert every instance of a json attribute displays a specific pattern

Hey,

 

nmrao gave me some code to assert that a repeating attribute in my json response had a null as follows::

assert context.response, 'Request parameter is correct'
def json = new groovy.json.JsonSlurper().parseText(context.response)
assert json.data.DataSourceName.every{null == it}

Here you can see that I was asserting that every single instance of the DataSourceName attribute was always blank in my response

 

I now have to assert that another attribute has a specific pattern - e.g. 3 character alpha code (e.g. GDS) or a 3 digit value starting with two zeros (e.g. 004)

 

I'm guessing I need to use regex for this - but I don't know how to add in the regex for this

 

e.g. if I need to assert that the value for DataSourceName can be any 3 alpha char (e.g. GDS) - I'd use [A-Z]{3} as the regex - but how do I insert it into my script above?  Just replacing the word 'null' with [A-Z]{3} like below doesn't work

 

assert context.response, 'Request parameter is correct'
def json = new groovy.json.JsonSlurper().parseText(context.response)
assert json.data.DataSourceId_Name.every{[A-Z]{3} == it}

Can anyone advise how I represent a regex value in the script above?

 

Many thanks to all!

 

richie