[asterisk-dev] [Code Review] 4520: Testsuite: stasis: set a channel variable on websocket disconnect error

[Ashley Sanders]

> On March 24, 2015, 11:23 a.m., Matt Jordan wrote:
> > ./asterisk/trunk/tests/rest_api/applications/stasis_status/observable_object.py, lines 72-74
> > <https://reviewboard.asterisk.org/r/4520/diff/1/?file=72747#file72747line72>
> >
> >     When you have 'ternary-esque' expressions (this thing is a Boolean, unless it is None), I find it clearer to write the if statement as a one-liner:
> >     
> >     
> >     return valid if valid is not None else True
> >     
> >

Ordinarily, I wholeheartedly agree with you. I think that ternary statements make it easier to grasp what is going on in an 'if-this-do-that-else-do-this-other-thing' situation, because all the logic you need to decipher the behavior is in one line of syntax. 

The reason I opted out of using 'ternary-esque' statements in this code was because of this stackoverflow answer: http://stackoverflow.com/a/394814. Originally, I had used quite a few of them but, I had a suspicion that there would issues with respect to readability, especially since a couple of the statements were a bit large and nested. So, for consistency, I removed all of them from my review draft.


- Ashley


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On March 22, 2015, 11:34 p.m., Ashley Sanders wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviewboard.asterisk.org/r/4520/
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> 
> (Updated March 22, 2015, 11:34 p.m.)
> 
> 
> Review request for Asterisk Developers.
> 
> 
> Bugs: ASTERISK-24802
>     https://issues.asterisk.org/jira/browse/ASTERISK-24802
> 
> 
> Repository: testsuite
> 
> 
> Description
> -------
> 
> When an error occurs while writing to a web socket, the web socket is disconnected and the event is logged. A side-effect of this, however, is that any application on the other side waiting for a response from Stasis is left hanging indefinitely (as there is no mechanism presently available for notifying interested parties about web socket error states in Stasis).
> 
> This patch introduces a new channel variable: STASIS_STATUS to give outside applications context when errors occur in Stasis that interrupt normal processing.
> 
> This test exercises three scenarios to elicit updates to the STASIS_STATUS channel variable:
> 1) The 'Babs' scenario: tests a nominal path of Stasis to verify the 'ACTIVE' state is correctly applied. For this test, a call is originated under normal conditions and then the system is polled for the value of STASIS_STATUS before the channel is hung up.
> 2) The 'Bugs' scenario: tests the situation where a call is originated requesting an app that was never registered in Stasis to verify the 'FAILED' state is correctly applied.
> 3) The 'Buster' scenario: tests the situation where an app that was registered in Stasis when call A was originated (and while call A is still active) but is no longer registered when call B is originated. Determines if the 'FAILED' state is correctly applied.
> 
>  ***Note*** This is a test. It is only a test. The review for the Asterisk source can be found at: https://reviewboard.asterisk.org/r/4519/
> 
> 
> Diffs
> -----
> 
>   ./asterisk/trunk/tests/rest_api/applications/tests.yaml 6547 
>   ./asterisk/trunk/tests/rest_api/applications/stasis_status/test_scenario_factory.py PRE-CREATION 
>   ./asterisk/trunk/tests/rest_api/applications/stasis_status/test_scenario.py PRE-CREATION 
>   ./asterisk/trunk/tests/rest_api/applications/stasis_status/test_case.py PRE-CREATION 
>   ./asterisk/trunk/tests/rest_api/applications/stasis_status/test-config.yaml PRE-CREATION 
>   ./asterisk/trunk/tests/rest_api/applications/stasis_status/run-test PRE-CREATION 
>   ./asterisk/trunk/tests/rest_api/applications/stasis_status/observable_object.py PRE-CREATION 
>   ./asterisk/trunk/tests/rest_api/applications/stasis_status/configs/ast1/sip.conf PRE-CREATION 
>   ./asterisk/trunk/tests/rest_api/applications/stasis_status/configs/ast1/http.conf PRE-CREATION 
>   ./asterisk/trunk/tests/rest_api/applications/stasis_status/configs/ast1/extensions.conf PRE-CREATION 
>   ./asterisk/trunk/tests/rest_api/applications/stasis_status/configs/ast1/ari.conf PRE-CREATION 
>   ./asterisk/trunk/tests/rest_api/applications/stasis_status/ari_client.py PRE-CREATION 
> 
> Diff: https://reviewboard.asterisk.org/r/4520/diff/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Ashley Sanders
> 
>

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