src/test/groovy/bugs/Groovy4986Bug.groovy

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 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
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 *
 *    http://www.apache.org/licenses/LICENSE-2.0
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 *  KIND, either express or implied.  See the License for the
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package groovy.bugs

import groovy.test.GroovyTestCase

import java.sql.Timestamp

class Groovy4986Bug extends GroovyTestCase {
    void testPlusMinusToTimestamp() {
        def d = new Date()
        def t = new Timestamp(d.time)

        def tplus = t + 1
        def tminus = t - 1

        assert t.class == tplus.class
        assert t.class == tminus.class
    }
}