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https://issues.apache.org/jira/browse/TAP5-2452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14336636#comment-14336636
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Jochen Kemnade commented on TAP5-2452:
--------------------------------------
I started to implement a custom key set with custom mutators but I'm getting
the feeling that I'm taking it too far.
Do you actually need the {{keySet().retainAll(...)}} to work or did you just
want to report this (perfectly valid) bug? In the latter case, I'd prefer the
mutators to throw an {{UnsupportedOperationException}}.
> Bug in CaseInsensitiveMap
> -------------------------
>
> Key: TAP5-2452
> URL: https://issues.apache.org/jira/browse/TAP5-2452
> Project: Tapestry 5
> Issue Type: Bug
> Components: tapestry-ioc
> Affects Versions: 5.4, 5.3.8
> Reporter: Alex Lumpov
>
> {code}
> /**
> *
> * @author AlexLumpov
> */
> public class CaseInsensitiveMapTest extends Assert {
> @Test
> public void testRetainAllKeys() {
> Map<String, String> map = new CaseInsensitiveMap<String>();
> map.put("1", "1");
> map.put("2", "2");
> map.put("3", "3");
> Collection<String> keysToRetain = Arrays.asList("3", "4", "5");
> HashSet<String> expected = new
> HashSet<String>(Arrays.asList("3"));
> boolean modified = map.keySet().retainAll(keysToRetain);
> assertEquals(true, modified);
> assertEquals(expected, map.keySet());
> }
> }
> {code}
> Result:
> {code}
> java.lang.AssertionError: expected:<[3]> but was:<[2, 3]>
> {code}
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