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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