src/test/groovy/bugs/Groovy4435Bug.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 org.codehaus.groovy.control.MultipleCompilationErrorsException

class Groovy4435Bug extends GroovyTestCase {
    void testAssignmentToAFinalFieldThroughPropertyAccess() {
        try {
            new GroovyShell().parse """
                class Test4435 {
                    private final String prop = ""
                    void setProp(val) {
                        this.prop = val
                    }
                }
            """
            fail('The compilation should have failed as a final field is being assigned to.')
        } catch (MultipleCompilationErrorsException e) {
            def syntaxError = e.errorCollector.getSyntaxError(0)
            assert syntaxError.message.contains("cannot modify final field 'prop' outside of constructor")
        }
    }
}