FW: Null pointer in JavaSamplerClient whenn using AssertionVisualizer

[Alistair Hopkins]

I can answer my own (stupid) question:

JavaSamplerClient is not the TestElement needed, JavaSampler is.

I can make the problem disappear by changing JavaSampler.sample(Entry entry)
to:

        public SampleResult sample(Entry entry) {
                SampleResult sr =
createJavaClient().runTest(createArgumentsHashMap(getArguments()));
                sr.setSamplerData(this);
                return sr;
        }

(although as the toString() is not implemented, it looks a little daft).
However, I don't think this is quite right, as we don't really care if it's
JavaSampler, it's JavaSamplerClient's identity we really want to know, so I
have modified  AssertionVisualizer instead:

        public void add(SampleResult sample)
        {
                if(null != sample.getSamplerData())
                        textArea.append(sample.getSamplerData().toString());
                else
                        textArea.append(sample.getSampleLabel())
                textArea.append(getAssertionResult(sample));
                textArea.append("\n");
        }

This will give a sensible result without labelling every line the same in
the case of samplers like JavaSampler which are carriers for other samplers.


There is also a bug in the build.bat script to call Ant: line 13 should be
        for %%i in (".\lib\ext\*.jar") do CALL lcp %%i
and not
        for %%i in (".\ext\*.jar") do CALL lcp %%i

I attach diffs.

Alistair


-----Original Message-----
From: Alistair Hopkins [mailto:[EMAIL PROTECTED]
Sent: 06 March 2003 11:18
To: [EMAIL PROTECTED]
Subject: Null pointer in JavaSamplerClient whenn using
AssertionVisualizer


Hi,

I'm using Jmeter 1.8.1 and jdk 1.4 to do some interface testing on a legacy
application which uses nasty text over tcp sockets for interprocess comms.

I've implemented a SocketSampler which extends JavaSamplerClient and will
write a command (as specified in the UI) to the socket, then return the
response line as the SamplerResult response data:

        long start = System.currentTimeMillis();
        byte[] response = makeRequest(request);  //does the nasty socket thing
        long finish = System.currentTimeMillis();
        SampleResult result = new SampleResult();
        result.setDataType(SampleResult.TEXT);
        result.setResponseData(response);
        result.setTime(finish - start);

The only problem is that when I try to use the AssertionVisualizer I get a
null pointer exception at AssertionVisualilzer:116 and the test run never
exits.  I know that the SleepTest sample has the same problem.

AssertionVisualizer:116
        textArea.append(sample.getSamplerData().toString());

So, I try to add result.setSamplerData(this); to my class - but then none of
the visualizers work!  SamplerData is a TestElement - what TestElement is
expected?  It seems to be only for adding a label to the panel anyway.

Can anyone tell me what I have to do to get the AssertionVisualizer working?
(without hacking the JMeter source - I want to give this test set to 3rd
parties and I want to keep on the development track!)

Thanks



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