Groovy example source code file (Groovy3818Bug.groovy)

This example Groovy source code file (Groovy3818Bug.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Groovy tags/keywords

comparator, dummy, dummy, groovytestcase, han, l, luke, luke, sky, sky, skywalker, skywalker, solo, treeset

The Groovy Groovy3818Bug.groovy source code

package groovy.bugs

class Groovy3818Bug extends GroovyTestCase {
    void testCreatingSimilarSetandMapWithComparator() {
        def scompare = { a, b -> a.id <=> b.id } as Comparator

        def set = new TreeSet( scompare )

        set << [name: "Han Solo",       id: 1]
        set << [name: "Luke Skywalker", id: 2]
        set << [name: "L. Skywalker",   id: 3]

        def result = set.findAll { elt -> elt.name =~ /Sky/ }
        assert result.size() == 2

        result = set.grep { elt -> elt.name =~ /Sky/ }
        assert result.size() == 2

        def mcompare = { a, b -> a.id <=> b.id } as Comparator

        def map = new TreeMap( mcompare )

        map[[name: "Han Solo", id: 1]] = "Dummy"
        map[[name: "Luke Skywalker", id: 2]] = "Dummy"
        map[[name: "L. Skywalker",   id: 3]] = "Dummy"

        result = map.findAll { elt ->elt.key.name =~ /Sky/ }
        assert result.size() == 2
    }
}