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https://issues.apache.org/jira/browse/GROOVY-9710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sam Gleske updated GROOVY-9710:
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Component/s: groovy-runtime
> List.intersect changes behavior from Groovy 2.4 and Groovy 2.5+
> ---------------------------------------------------------------
>
> Key: GROOVY-9710
> URL: https://issues.apache.org/jira/browse/GROOVY-9710
> Project: Groovy
> Issue Type: Bug
> Components: groovy-runtime
> Affects Versions: 3.0.5, 2.5.13
> Reporter: Sam Gleske
> Priority: Major
>
> h2. Description
> List.intersect preserves the ordering of the source list in Groovy 2.4 but
> instead takes the ordering of the intersecting list. This can lead to
> unexpected behavior in Groovy applications as code migrates to newer versions
> of Groovy.
> h2. Example code
> {code:java}
> // Passes assertion in Groovy 2.4.20 but fails in Groovy 2.5.13 and 3.0.5
> 0
> assert ['a', 'b'].intersect(['c', 'b', 'a']) == ['a', 'b']{code}
> h2. Expected behavior
> The order of the first list is preserved.
> h2. Actual behavior
> The order of the second list takes precedence.
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