/*
* 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.classgen;
import org.codehaus.groovy.ast.*;
import org.codehaus.groovy.ast.expr.ConstantExpression;
import org.codehaus.groovy.ast.stmt.BlockStatement;
import org.codehaus.groovy.ast.stmt.ReturnStatement;
import org.codehaus.groovy.ast.stmt.Statement;
import org.codehaus.groovy.runtime.InvokerHelper;
/**
* @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
* @version $Revision: 21496 $
*/
public class MethodTest extends TestSupport {
public void testMethods() throws Exception {
ClassNode classNode = new ClassNode("Foo", ACC_PUBLIC, ClassHelper.OBJECT_TYPE);
classNode.addConstructor(new ConstructorNode(ACC_PUBLIC, null));
Statement statementA = new ReturnStatement(new ConstantExpression("calledA"));
Statement statementB = new ReturnStatement(new ConstantExpression("calledB"));
Statement emptyStatement = new BlockStatement();
classNode.addMethod(new MethodNode("a", ACC_PUBLIC, ClassHelper.OBJECT_TYPE, Parameter.EMPTY_ARRAY, ClassNode.EMPTY_ARRAY, statementA));
classNode.addMethod(new MethodNode("b", ACC_PUBLIC, null, Parameter.EMPTY_ARRAY, ClassNode.EMPTY_ARRAY, statementB));
classNode.addMethod(new MethodNode("noReturnMethodA", ACC_PUBLIC, null, Parameter.EMPTY_ARRAY, ClassNode.EMPTY_ARRAY, emptyStatement));
classNode.addMethod(new MethodNode("noReturnMethodB", ACC_PUBLIC, ClassHelper.OBJECT_TYPE, Parameter.EMPTY_ARRAY, ClassNode.EMPTY_ARRAY, emptyStatement));
classNode.addMethod(new MethodNode("c", ACC_PUBLIC, ClassHelper.VOID_TYPE, Parameter.EMPTY_ARRAY, ClassNode.EMPTY_ARRAY, emptyStatement));
Class fooClass = loadClass(classNode);
assertTrue("Loaded a new class", fooClass != null);
Object bean = fooClass.newInstance();
assertTrue("Created instance of class: " + bean, bean != null);
assertCallMethod(bean, "a", "calledA");
assertCallMethod(bean, "b", "calledB");
assertCallMethod(bean, "noReturnMethodA", null);
assertCallMethod(bean, "noReturnMethodB", null);
assertCallMethod(bean, "c", null);
}
protected void assertCallMethod(Object object, String method, Object expected) {
Object value = InvokerHelper.invokeMethod(object, method, new Object[0]);
assertEquals("Result of calling method: " + method + " on: " + object + " with empty list", expected, value);
value = InvokerHelper.invokeMethod(object, method, null);
assertEquals("Result of calling method: " + method + " on: " + object + " with null", expected, value);
}
}