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https://issues.apache.org/jira/browse/CALCITE-3595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16998208#comment-16998208
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Wang Yanlin commented on CALCITE-3595:
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I came across this problem very often when debug, it's a little annoying, so I
create PR try to fix.
> Test infrastructure overwrites reference log with wrong results
> ---------------------------------------------------------------
>
> Key: CALCITE-3595
> URL: https://issues.apache.org/jira/browse/CALCITE-3595
> Project: Calcite
> Issue Type: Bug
> Components: build
> Reporter: Julian Hyde
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When I add a test case to a test that is based on DiffRepository (such as
> SqlPrettyWriterTest), and run it in Intellij, the first time gives an error
> because the actual output does not match the expected output. This is good.
> I would expect that if I run it again, it will fail again, but it does not.
> I'm not sure exactly what is going on, but maybe the test is reading from an
> output file instead of a reference log. This was probably broken during the
> migration to gradle, because the paths for reference logs have all changed.
> This bug prevents me from using the workflow where I add a test case, run it,
> and when it fails, change the code until the output looks right, then
> overwrite the reference log.
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