[jira] [Commented] (CASSANDRA-13238) Add actual row output to assertEmpty error message

["Alex Petrov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-13238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15901603#comment-15901603 ] 

Alex Petrov commented on CASSANDRA-13238:
-----------------------------------------

Committed as [60d3292b04f35f4cd27801448b089110cc7b5b19| https://github.com/apache/cassandra/commit/60d3292b04f35f4cd27801448b089110cc7b5b19] to 3.0 and merged up to [3.11|https://github.com/apache/cassandra/commit/7707a0ed59e0f22a864b3c05515df7f1041e3c42] and [trunk|https://github.com/apache/cassandra/commit/b5a5fbe1f645cfdfab090ae6be4e82192d4e816d].

> Add actual row output to assertEmpty error message
> --------------------------------------------------
>
>                 Key: CASSANDRA-13238
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13238
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Alex Petrov
>            Assignee: Alex Petrov
>            Priority: Trivial
>
> We have several issues popping up every now and then that are hard to debug and the test failure messages aren't entirely helpful, for example: 
> {code}
> java.lang.AssertionError: Expected empty result but got 1 rows:
> {code}
> It could be much better if we could have an actual output (what exactly the row that got returned appended to it:
> {code}
> java.lang.AssertionError: Expected empty result but got 1 rows: [row(value=null)]
> {code}
> The nice side-effect of this change is that now we will have a helper method that can nicely turn an {{UntypedResultSet}} into {{String}} (I apologise if I did overlooked one).



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