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Groovy example source code file (ParameterAnnotationTest.groovy)

This example Groovy source code file (ParameterAnnotationTest.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

groovyclassloader, groovycodesource, groovycodesource, groovytestcase, methodannotation, methodannotation, myinterface, myinterface, myinterfaceimpl, myinterfaceimpl, parameterannotation, parameterannotationtest

The Groovy ParameterAnnotationTest.groovy source code

/*
* Copyright 2003-2011 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.
*/

import org.codehaus.groovy.control.*

class ParameterAnnotationTest extends GroovyTestCase {
    void testParameterAnnotation() {

        def gcl = new GroovyClassLoader()

        gcl.parseClass """
            import java.lang.annotation.*

            @Target(ElementType.METHOD)
            @Retention(RetentionPolicy.RUNTIME)
            @interface MethodAnnotation {}

            @Target(ElementType.PARAMETER)
            @Retention(RetentionPolicy.RUNTIME)
            @interface ParameterAnnotation {}

            interface MyInterface {
                @MethodAnnotation
                def method(@ParameterAnnotation def param)
            }
        """

        GroovyCodeSource codeSource = new GroovyCodeSource("""
            class MyInterfaceImpl implements MyInterface {
                def method(def param) {}
            }
        """, "script" + System.currentTimeMillis() + ".groovy", "/groovy/script")

        def cu = new CompilationUnit(CompilerConfiguration.DEFAULT, codeSource.codeSource, gcl)
        cu.addSource(codeSource.getName(), codeSource.scriptText);
        cu.compile(CompilePhase.FINALIZATION.phaseNumber)

        def classNode = cu.getClassNode("MyInterfaceImpl")
        def interfaceClassNode = classNode.getInterfaces().find { it.nameWithoutPackage == 'MyInterface' }

        def methodNode = interfaceClassNode.getDeclaredMethods("method")[0]

        // check if the AnnotationNode for 'MethodAnnotation' has been created
        assert methodNode.getAnnotations().any { an -> an.classNode.nameWithoutPackage == 'MethodAnnotation' }

        // check if the AnnotationNode for 'ParameterAnnotation' has been created
        assert methodNode.getParameters()[0].getAnnotations().any { an -> an.classNode.nameWithoutPackage == 'ParameterAnnotation' }
    }
}

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