src/test/groovy/bugs/Groovy4247Bug.groovy

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 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
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 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
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package groovy.bugs

import groovy.test.GroovyTestCase

class Groovy4247Bug extends GroovyTestCase {
    void testNewFileRenameToMethod() {
        def file = new File('blah_blah')

        def methods = file.metaClass.respondsTo(file, "renameTo", [String] as Class[])
        assert methods.size() == 1

        def renameToMethod = methods[0]

        try {
            renameToMethod.invoke(file, [null] as Object[])
            fail('The renameTo() with null parameter should have failed with NPE')
        } catch(ex) {
            assert ex instanceof NullPointerException
        }
    }
}