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From: RL <ladr@mindspring.com>
Date: Fri, 20 Dec 2013 19:21:53 -0800
Message-ID: 
 <CANz_ysxh9NA4D+xCSuuSaG0MeFA_SE9PFxDAr2a9CsoEt22ZpQ@mail.gmail.com>
Subject: Re: Using Beanshell Assertion to test a JSON value
To: JMeter Users List <user@jmeter.apache.org>
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Hm. I did a kludgy workaround that seems to work.

I wonder if it's worth reporting as a bug that vars.get crashes if the
specified variable doesn't exist. Surely that would have been well known by
now?

My kludgy solution was to predefine blobValue as -1, then check to see if
it's still -1 after the JSON Path Extraction.

Since this particular parameter should never have a value of -1, if it
still does, that means that the JSON Path Extraction failed because its
value is really null. If the extraction succeeds, it would have a different
value.

Whew...

Thanks for the help and comments.


On Fri, Dec 20, 2013 at 7:06 PM, RL <ladr@mindspring.com> wrote:

> > String blobValue = vars.get("blobValue");
>
>>
>> what does vars.get() return if the variable does not exist?
>>
>>
> Right. That's what's causing the crash. If I create blobValue explicitly
> beforehand the Beanshell Assertion works.
>
> So the question more narrowly defined is: how can one test for the
> existence of a variable before doing a vars.get, since vars.get crashes if
> the specified variable doesn't exist?
>
>
>

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