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Groovy example source code file (Groovy4607Bug.groovy)

This example Groovy source code file (Groovy4607Bug.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

child, child, compilabletestsupport, compilabletestsupport, groovy4607bug, groovy4607bug, super, super

The Groovy Groovy4607Bug.groovy source code

/*
 * Copyright 2003-2010 the original author or authors.
 *
 * Licensed 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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package groovy.bugs

import gls.CompilableTestSupport

class Groovy4607Bug extends CompilableTestSupport {
    void testProtectedOverridingPublic() {
        def errorMsg = shouldNotCompile('''
            abstract class Super {
                public abstract myMethod()
            }
            class Child extends Super {
                protected myMethod() { true }
            }
            assert new Child() != null
        ''')
        assert errorMsg.contains('cannot override myMethod in Super')
        assert errorMsg.contains('attempting to assign weaker access privileges')
        assert errorMsg.contains('was public')
    }

    void testPrivateOverridingProtected() {
        def errorMsg = shouldNotCompile('''
            class Super {
                protected myMethod(int i, int j) { i + j }
            }
            class Child extends Super {
                private myMethod(int i, int j) { i - j }
            }
            assert new Child() != null
        ''')
      assert errorMsg.contains('cannot override myMethod in Super')
      assert errorMsg.contains('attempting to assign weaker access privileges')
      assert errorMsg.contains('was protected')
    }
}

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