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Groovy example source code file (NewStaticMetaMethodTest.java)

This example Groovy source code file (NewStaticMetaMethodTest.java) 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, exception, exception, method, newinstancemetamethod, newinstancemetamethod, newstaticmetamethodtest, object, object, reflection, should, should, string, testcase

The Groovy NewStaticMetaMethodTest.java 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.
 */
package org.codehaus.groovy.runtime;

import junit.framework.TestCase;
import org.codehaus.groovy.reflection.CachedMethod;
import org.codehaus.groovy.runtime.metaclass.NewInstanceMetaMethod;

import java.lang.reflect.Method;

/**
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 * @version $Revision: 21515 $
 */
public class NewStaticMetaMethodTest extends TestCase {

    public void testInvokeMetaMethod() throws Exception {
        Method method = getClass().getMethod("dummyMethod", new Class[]{String.class, String.class});
        assertTrue("Should have found a method", method != null);

        NewInstanceMetaMethod metaMethod = createNewMetaMethod(method);

        Object answer = metaMethod.invoke("abc", new Object[]{"xyz"});
        assertEquals("def", answer);

        assertTrue("Should not appear as static method", !metaMethod.isStatic());
    }

    public void testInvokeDefaultGroovyMethod() throws Exception {
        Method method = DefaultGroovyMethods.class.getMethod("plus", new Class[]{String.class, Object.class});
        assertTrue("Should have found a method", method != null);

        NewInstanceMetaMethod metaMethod = createNewMetaMethod(method);

        Object answer = metaMethod.invoke("abc", new Object[]{"123"});
        assertEquals("abc123", answer);

        System.out.println("Found: " + answer);
    }

    public void testInvokeDefaultGroovyMethodUsingMetaClass() {
        Object answer = InvokerHelper.invokeMethod("abc", "plus", new Object[]{"123"});
        assertEquals("abc123", answer);

        System.out.println("Found: " + answer);
    }

    public static String dummyMethod(String foo, String bar) throws Exception {
        assertEquals("abc", foo);
        assertEquals("xyz", bar);
        return "def";
    }

    protected NewInstanceMetaMethod createNewMetaMethod(Method method) {
        return new NewInstanceMetaMethod(CachedMethod.find(method));
    }
}

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