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https://issues.apache.org/jira/browse/BEAM-2970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17022885#comment-17022885
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Jeffrey commented on BEAM-2970:
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The current version of equal_to does an exhaustive comparison if the sort
fails, so I think this issue is already fixed.
> Add comparator function to equal_to
> -----------------------------------
>
> Key: BEAM-2970
> URL: https://issues.apache.org/jira/browse/BEAM-2970
> Project: Beam
> Issue Type: Improvement
> Components: sdk-py-core
> Reporter: Sarah Walters
> Priority: Minor
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The equal_to function provided by testing/util.py
> (https://github.com/apache/beam/blob/master/sdks/python/apache_beam/testing/util.py#L54)
> assumes that the actual and expected lists can be sorted using Python's
> sorted method (which relies on the < operator) and compared using the ==
> operator.
> If this isn't the case, equal_to sometimes reports False incorrectly, when
> the expected and actual lists are in different orders.
> Add a comparator function to equal_to in order to allow callers to define a
> total order.
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