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SWTBot and Nattable: wait until all pending updates are performed [message #1817380]

Thu, 21 November 2019 07:52

Eclipse User

We are testing our Nattable with SWTBot.
This works all good, but in rare cases the test fails.

Presumably, it is some timing related issue.
This is what we do:
1. Change the underlying data
2. Almost immediately check the content of the Nattable

Is there any way to wait for pending Nattable update activity?

Re: SWTBot and Nattable: wait until all pending updates are performed [message #1817383 is a reply to message #1817380]

Thu, 21 November 2019 08:09

Eclipse User

It depends on what you mean by "Change the underlying data". How do you change the data? Directly on the backing data or via N UpdateDataCommand?

Re: SWTBot and Nattable: wait until all pending updates are performed [message #1817384 is a reply to message #1817383]

Thu, 21 November 2019 08:46

Eclipse User

Okay - I had a look in our code and probably found the problem: the Nattable is updated by calling nattable.refresh(). This is triggered by an asynchronous e4 event once the data is modified.

So I guess the nattable.refresh() blocks as long as the changes are taking place, correct? In that case we need to handle this somehow different.

Re: SWTBot and Nattable: wait until all pending updates are performed [message #1817385 is a reply to message #1817384]

Thu, 21 November 2019 08:48

Eclipse User

You didn't answer my question so I don't know what to answer.

Re: SWTBot and Nattable: wait until all pending updates are performed [message #1817386 is a reply to message #1817385]

Thu, 21 November 2019 08:55

Eclipse User

Yeah, sorry ;). The data is changed directly.

Re: SWTBot and Nattable: wait until all pending updates are performed [message #1817387 is a reply to message #1817385]

Thu, 21 November 2019 08:55

Eclipse User

Quote:

So I guess the nattable.refresh() blocks as long as the changes are taking place, correct?

No I don't think so. How should refresh() know how long to wait? It triggers an event that is fired the stack upwards and triggers cache clearing. If the event has not yet reached the NatTable instance you access cached states.

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