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From Jochen Theodorou <>
Subject Re: Joint build exception
Date Tue, 20 Oct 2015 07:54:28 GMT
On 19.10.2015 22:58, Paolo Di Tommaso wrote:
> Dear all,
> I'm getting a strange exception for both 2.3.X
> <>
> and 2.4.X
> <>
> joint builds for the nextflow project.
> The exception reports the following stack trace:
>     org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object
'Mock for type 'ISession'' with class 'com.sun.proxy.$Proxy39' to class 'nextflow.Session'
>          at nextflow.processor.PublishDir.createExecutor(PublishDir.groovy:298)
>          at nextflow.processor.PublishDir.apply(PublishDir.groovy:192)
>          at nextflow.processor.PublishDirTest.should copy output files(PublishDirTest.groovy:145)
> The line throwing the error is at this link:
> The problem is that I'm unable to replicate the issue on any of my usual
> test environments (Mac/Oracle Java 7, Travis/Oracle Java 7 and 8,
> CircleCI/OpenJDK 7)
> I'm wondering if the problem can be related to any recent change to the
> Groovy code base.

Nothing comes to my mind right now. Of course you could be more sure by 
using older Groovy versions.

Anyway, I don't know what kind of object is supposed to be stored in 
nextflow.Global.session, but from the trace I can make the assumption, 
that you are actually in testing (and your CI links confirm that) and 
that session has been mocked on basis of ISession. Now while Session is 
an ISession as well, doesn't mean that the mock would be a Session. 
Since the line has a type conversion using "as", I am wondering if some 
custom action is supposed to take place here. So much depends on how the 
mock was created...

but I did not look deep enough into to to conclude from the spock test in
to the actual mocking of Global.session

bye blackdrag

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