Groovy example source code file (ReflectionUtilsTest.groovy)

This example Groovy source code file (ReflectionUtilsTest.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

class, class, closure, groovytestcase, metaclassregistry, pogocalletestclass, pogocalletestclass, pojocallertestclass, pojocallertestclass, reflectionutilstest, reflectionutilstest

The Groovy ReflectionUtilsTest.groovy source code

/*
 * Copyright 2008 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 org.codehaus.groovy.reflection.utils

import org.codehaus.groovy.reflection.ReflectionUtils

// note, this must be in a package other than org.codehause.groovy.reflection or else
// the tests will incorrectly miss the target

/**
 * Created by IntelliJ IDEA.
 * User: Danno.Ferrin
 * Date: Jun 24, 2008
 * Time: 9:45:15 PM
 */
class ReflectionUtilsTest extends GroovyTestCase {

    private Class privateCaller() {
        return ReflectionUtils.getCallingClass()
    }

    public Class publicCaller() {
        return ReflectionUtils.getCallingClass()
    }

    public void testMethodCallingClass() {
        if (ReflectionUtils.isCallingClassReflectionAvailable()) {
            assert privateCaller() == ReflectionUtilsTest
            assert publicCaller() == ReflectionUtilsTest

            // make sure we don't reflect ourselves as the caller of testMethodCallingClass
            assert ReflectionUtils.getCallingClass() != ReflectionUtilsTest
        }
    }

    public void testPogoMethodCallingClass() {
        if (ReflectionUtils.isCallingClassReflectionAvailable()) {
            assert PogoCalleTestClass.staticClassCaller() == ReflectionUtilsTest
            assert new PogoCalleTestClass().instanceCaller() == ReflectionUtilsTest
        }
    }

    public void testPojoMethodCallingClass() {
        if (ReflectionUtils.isCallingClassReflectionAvailable()) {
            assert PojoCallerTestClass.staticClassCaller() == ReflectionUtilsTest
            assert new PojoCallerTestClass().instanceCaller() == ReflectionUtilsTest
        }
    }

    public void testMetaMethodCallingClass() {
        if (ReflectionUtils.isCallingClassReflectionAvailable()) {
            MetaClassRegistry mcr = GroovySystem.getMetaClassRegistry()
            mcr.removeMetaClass PojoCallerTestClass
            mcr.removeMetaClass PogoCalleTestClass

            Closure testClosure = {-> return ReflectionUtils.getCallingClass()}
            PojoCallerTestClass.metaClass.metaInstanceCaller = testClosure
            PogoCalleTestClass.metaClass.metaInstanceCaller = testClosure

            PojoCallerTestClass.metaClass.'static'.metaStaticCaller = testClosure
            PogoCalleTestClass.metaClass.'static'.metaStaticCaller = testClosure

            assert PojoCallerTestClass.metaStaticCaller() == ReflectionUtilsTest
            assert new PojoCallerTestClass().metaInstanceCaller() == ReflectionUtilsTest

            assert PogoCalleTestClass.metaStaticCaller() == ReflectionUtilsTest
            assert new PogoCalleTestClass().metaInstanceCaller() == ReflectionUtilsTest
        }
    }

}

class PogoCalleTestClass {
    public static Class staticClassCaller() {
        return ReflectionUtils.getCallingClass()
    }

    public Class instanceCaller() {
        return ReflectionUtils.getCallingClass()
    }
}