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https://issues.apache.org/jira/browse/MRUNIT-185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joseph Beard updated MRUNIT-185:
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Attachment: JIRA_185.patch
Proposed patch for the defect involves bypassing String.format if the single
argument error method is used.
> IllegalFormatException for '%' in Output
> ----------------------------------------
>
> Key: MRUNIT-185
> URL: https://issues.apache.org/jira/browse/MRUNIT-185
> Project: MRUnit
> Issue Type: Bug
> Affects Versions: 1.0.0
> Reporter: Joseph Beard
> Attachments: JIRA_185.patch
>
>
> In cases where the expected output does not match the actual output, the
> Errors class will treat the error message created by the
> TestDriver.checkTypesAndLogError(...) method as a format string. If either
> the Expected or Actual Output value contains a '%' character, the
> String.format will result in some type of IllegalFormatException. In my
> case, I received an UnknownFormatConversionException with "%D" in the
> expected output.
> Fortunately, this behavior is only triggered if the unit test is in error,
> but it can make tracking down the source of the issue hard to find.
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