[infinispan-dev] eventually...

[Manik Surtani]

Is there a max wait period?  I wouldn't want conditions blocking indefinitely... 

On 2 Sep 2010, at 11:31, Mircea Markus wrote:

> Hi,
> 
> While testing, especially on async behaviour, one needs to wait until a certain state is reached.
> E.g. let's say we want to test _async_ repl works fine,  one way to do it is:
> 
> 1. first approach
> cache1.put(k,v);
> 
> //now expect this to be replicated at some point in future on cache2
> for (int i=0; i < 10; i++) { 
> 	if (v.equals(cache2.get(k)) break;
> 	Thread.sleep(1000);
> }
> assert v.equals(cache2.get(k));
> 
> the code bellow waits 10 seconds for the replication to occur, if not fails the test.
> Problem with this code is that it is rather hard to read, and not reusable. 
> This code can be found in many paces in our tests.
> 
> 2. second approach.
> I've added AbstractInfinispanTest.eventually(Condition ec) method that does the same.
> Code bellow now looks like:
> 
>         eventually(new Condition() {
>            public boolean isSatisfied() throws Exception {
>               return v.equals(cache2.get(k));
>            }
>         });
> While the amount of code itself hasn't change significantly, the second approach is more readable and much more quicker to write as it is generated by the IDE.
> 
> I've added this in 4.2, let me know your thoughts around it.
> 
> Cheers,
> Mircea
> 
> 
> 
> 
> 
> 
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--
Manik Surtani
manik at jboss.org
Lead, Infinispan
Lead, JBoss Cache
http://www.infinispan.org
http://www.jbosscache.org