src/test/groovy/bugs/Groovy4188Bug.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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package groovy.bugs

import groovy.test.GroovyTestCase
import org.codehaus.groovy.control.MultipleCompilationErrorsException

class Groovy4188Bug extends GroovyTestCase {
    void testClassProvidingMetaClassFieldOfWrongType() {
        try {
            new GroovyShell().parse """
                class Foo4188 {
                  private String metaClass
                }
                  
                new Foo4188()
            """
            fail("The compilation should have failed as the field 'metaClass' is not of type groovy.lang.MetaClass.")
        } catch (MultipleCompilationErrorsException e) {
            def syntaxError = e.errorCollector.getSyntaxError(0)
            assert syntaxError.message.contains("it needs to be of the type groovy.lang.MetaClass for internal groovy purposes")
        }
    }
}