[jira] [Created] (GROOVY-9710) List.intersect changes behavior from Groovy 2.4 and Groovy 2.5+

["Sam Gleske (Jira)" <ji...@apache.org>]

Sam Gleske created GROOVY-9710:
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             Summary: 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
    Affects Versions: 2.5.13, 3.0.5
            Reporter: Sam Gleske


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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