[arquillian-issues] [JBoss JIRA] (ARQGRA-461) Running Graphene tests and use parallelStream method makes test fail with java.lang.IllegalStateException: The Graphene runtime isn't initialized. Exception.

[Alex Soto (JIRA)]

     [ https://issues.jboss.org/browse/ARQGRA-461?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alex Soto updated ARQGRA-461:
-----------------------------
               Description: 
Running Graphene tests and use parallelStream method makes test fail with java.lang.IllegalStateException: The Graphene runtime isn't initialized. Exception.

Basically the problem is when you want to get information about tables. You can iterate over elements in a foreach fashion, but you can also use new Java 8 stream API.

This works: ession.findElements(xpath("//table/tbody/tr/td/span[@class='title']")).stream().map(WebElement::getText).collect(Collectors.toList());

But if table is big you will try to improve parsing speed by adding parallelSteam (session.findElements(xpath("//table/tbody/tr/td/span[@class='title']")).parallelStream().map(WebElement::getText).collect(Collectors.toList());)

And in this case an exception is thrown.

Internally parallelStream uses a pool of threads so probably Graphene instance is tight to thread of test case, so the threads used by parallelStream does not contains a valid instance of Graphene.

Of course this is not blocking nor a big problem in the sense that you can use stream() without any problem, and moreover Java 8 is not spread yet, but it may be a problem in the future.

        Steps to Reproduce: Create a Graphene Page object which uses a WebElement inside a parallelStream.
                    Labels: java8, threads  (was: )
    Workaround Description: Although you cannot use parallelStream() you can use stream() method.
                Workaround: Workaround Exists


> Running Graphene tests and use parallelStream method makes test fail with java.lang.IllegalStateException: The Graphene runtime isn't initialized. Exception.
> -------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: ARQGRA-461
>                 URL: https://issues.jboss.org/browse/ARQGRA-461
>             Project: Arquillian Graphene
>          Issue Type: Bug
>            Reporter: Alex Soto
>            Priority: Minor
>              Labels: java8,, threads
>
> Running Graphene tests and use parallelStream method makes test fail with java.lang.IllegalStateException: The Graphene runtime isn't initialized. Exception.
> Basically the problem is when you want to get information about tables. You can iterate over elements in a foreach fashion, but you can also use new Java 8 stream API.
> This works: ession.findElements(xpath("//table/tbody/tr/td/span[@class='title']")).stream().map(WebElement::getText).collect(Collectors.toList());
> But if table is big you will try to improve parsing speed by adding parallelSteam (session.findElements(xpath("//table/tbody/tr/td/span[@class='title']")).parallelStream().map(WebElement::getText).collect(Collectors.toList());)
> And in this case an exception is thrown.
> Internally parallelStream uses a pool of threads so probably Graphene instance is tight to thread of test case, so the threads used by parallelStream does not contains a valid instance of Graphene.
> Of course this is not blocking nor a big problem in the sense that you can use stream() without any problem, and moreover Java 8 is not spread yet, but it may be a problem in the future.



--
This message was sent by Atlassian JIRA
(v6.3.1#6329)