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Groovy example source code file (ScriptTest.java)

This example Groovy source code file (ScriptTest.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

binding, binding, dummy, dummy, groovyclassloader, groovycodesource, groovycodesource, illegalaccessexception, instantiationexception, integer, io, script, script, scripttest, testsupport

The Groovy ScriptTest.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 groovy.lang;

import org.codehaus.groovy.classgen.TestSupport;
import org.codehaus.groovy.control.CompilationFailedException;
import org.codehaus.groovy.runtime.MethodClosure;

import java.io.IOException;

/**
 * Tests some particular script features.
 *
 * @author Guillaume Laforge
 */
public class ScriptTest extends TestSupport {
    /**
     * When a method is not found in the current script, checks that it's possible to call a method closure from the binding.
     *
     * @throws IOException
     * @throws CompilationFailedException
     * @throws IllegalAccessException
     * @throws InstantiationException
     */
    public void testInvokeMethodFallsThroughToMethodClosureInBinding() throws IOException, CompilationFailedException, IllegalAccessException, InstantiationException {
        String text = "if (method() == 3) { println 'succeeded' }";

        GroovyCodeSource codeSource = new GroovyCodeSource(text, "groovy.script", "groovy.script");
        GroovyClassLoader loader = new GroovyClassLoader(Thread.currentThread().getContextClassLoader());
        Class clazz = loader.parseClass(codeSource);
        Script script = ((Script) clazz.newInstance());

        Binding binding = new Binding();
        binding.setVariable("method", new MethodClosure(new Dummy(), "method"));
        script.setBinding(binding);

        script.run();
    }

    public static class Dummy {
        public Integer method() {
            return new Integer(3);
        }
    }
}

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