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Spring Framework example source code file (MethodInvokingFactoryBeanTests.java)

This example Spring Framework source code file (MethodInvokingFactoryBeanTests.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 - Spring Framework tags/keywords

argumentconvertingmethodinvoker, argumentconvertingmethodinvoker, arraylist, exception, illegalargumentexception, integer, integer, methodinvoker, methodinvokingfactorybean, methodinvokingfactorybean, nosuchmethodexception, object, object, string, util

The Spring Framework MethodInvokingFactoryBeanTests.java source code

/*
 * Copyright 2002-2008 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.springframework.beans.factory.config;

import java.util.ArrayList;

import junit.framework.TestCase;

import org.springframework.beans.propertyeditors.StringTrimmerEditor;
import org.springframework.beans.support.ArgumentConvertingMethodInvoker;
import org.springframework.util.MethodInvoker;
import org.springframework.util.MethodInvokerTests;

/**
 * @author Colin Sampaleanu
 * @author Juergen Hoeller
 * @since 21.11.2003
 */
public class MethodInvokingFactoryBeanTests extends TestCase {

	public void testParameterValidation() throws Exception {
		String validationError = "improper validation of input properties";

		// assert that only static OR non static are set, but not both or none
		MethodInvokingFactoryBean mcfb = new MethodInvokingFactoryBean();
		try {
			mcfb.afterPropertiesSet();
			fail(validationError);
		}
		catch (IllegalArgumentException ex) {
			// expected
		}

		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetObject(this);
		mcfb.setTargetMethod("whatever");
		try {
			mcfb.afterPropertiesSet();
			fail(validationError);
		}
		catch (NoSuchMethodException ex) {
			// expected
		}

		// bogus static method
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("some.bogus.Method.name");
		try {
			mcfb.afterPropertiesSet();
			fail(validationError);
		}
		catch (NoSuchMethodException ex) {
			// expected
		}

		// bogus static method
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("method1");
		try {
			mcfb.afterPropertiesSet();
			fail(validationError);
		}
		catch (IllegalArgumentException ex) {
			// expected
		}

		// missing method
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetObject(this);
		try {
			mcfb.afterPropertiesSet();
			fail(validationError);
		}
		catch (IllegalArgumentException ex) {
			// expected
		}

		// bogus method
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetObject(this);
		mcfb.setTargetMethod("bogus");
		try {
			mcfb.afterPropertiesSet();
			fail(validationError);
		}
		catch (NoSuchMethodException ex) {
			// expected
		}

		// static method
		MethodInvokerTests.TestClass1._staticField1 = 0;
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("staticMethod1");
		mcfb.afterPropertiesSet();

		// non-static method
		MethodInvokerTests.TestClass1 tc1 = new MethodInvokerTests.TestClass1();
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetObject(tc1);
		mcfb.setTargetMethod("method1");
		mcfb.afterPropertiesSet();
	}

	public void testGetObjectType() throws Exception {
		MethodInvokerTests.TestClass1 tc1 = new MethodInvokerTests.TestClass1();
		MethodInvokingFactoryBean mcfb = new MethodInvokingFactoryBean();
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetObject(tc1);
		mcfb.setTargetMethod("method1");
		mcfb.afterPropertiesSet();
		assertTrue(int.class.equals(mcfb.getObjectType()));

		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("voidRetvalMethod");
		mcfb.afterPropertiesSet();
		Class objType = mcfb.getObjectType();
		assertTrue(objType.equals(void.class));

		// verify that we can call a method with args that are subtypes of the
		// target method arg types
		MethodInvokerTests.TestClass1._staticField1 = 0;
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("supertypes");
		mcfb.setArguments(new Object[] {new ArrayList(), new ArrayList(), "hello"});
		mcfb.afterPropertiesSet();
		mcfb.getObjectType();

		// fail on improper argument types at afterPropertiesSet
		mcfb = new MethodInvokingFactoryBean();
		mcfb.registerCustomEditor(String.class, new StringTrimmerEditor(false));
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("supertypes");
		mcfb.setArguments(new Object[] {"1", new Object()});
		try {
			mcfb.afterPropertiesSet();
			fail("Should have thrown NoSuchMethodException");
		}
		catch (NoSuchMethodException ex) {
			// expected
		}
	}

	public void testGetObject() throws Exception {
		// singleton, non-static
		MethodInvokerTests.TestClass1 tc1 = new MethodInvokerTests.TestClass1();
		MethodInvokingFactoryBean mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetObject(tc1);
		mcfb.setTargetMethod("method1");
		mcfb.afterPropertiesSet();
		Integer i = (Integer) mcfb.getObject();
		assertEquals(1, i.intValue());
		i = (Integer) mcfb.getObject();
		assertEquals(1, i.intValue());

		// non-singleton, non-static
		tc1 = new MethodInvokerTests.TestClass1();
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetObject(tc1);
		mcfb.setTargetMethod("method1");
		mcfb.setSingleton(false);
		mcfb.afterPropertiesSet();
		i = (Integer) mcfb.getObject();
		assertEquals(1, i.intValue());
		i = (Integer) mcfb.getObject();
		assertEquals(2, i.intValue());

		// singleton, static
		MethodInvokerTests.TestClass1._staticField1 = 0;
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("staticMethod1");
		mcfb.afterPropertiesSet();
		i = (Integer) mcfb.getObject();
		assertEquals(1, i.intValue());
		i = (Integer) mcfb.getObject();
		assertEquals(1, i.intValue());

		// non-singleton, static
		MethodInvokerTests.TestClass1._staticField1 = 0;
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setStaticMethod("org.springframework.util.MethodInvokerTests$TestClass1.staticMethod1");
		mcfb.setSingleton(false);
		mcfb.afterPropertiesSet();
		i = (Integer) mcfb.getObject();
		assertEquals(1, i.intValue());
		i = (Integer) mcfb.getObject();
		assertEquals(2, i.intValue());

		// void return value
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("voidRetvalMethod");
		mcfb.afterPropertiesSet();
		assertNull(mcfb.getObject());

		// now see if we can match methods with arguments that have supertype arguments
		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("supertypes");
		mcfb.setArguments(new Object[] {new ArrayList(), new ArrayList(), "hello"});
		// should pass
		mcfb.afterPropertiesSet();
	}

	public void testArgumentConversion() throws Exception {
		MethodInvokingFactoryBean mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("supertypes");
		mcfb.setArguments(new Object[] {new ArrayList(), new ArrayList(), "hello", "bogus"});
		try {
			mcfb.afterPropertiesSet();
			fail("Matched method with wrong number of args");
		}
		catch (NoSuchMethodException ex) {
			// expected
		}

		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("supertypes");
		mcfb.setArguments(new Object[] {new Integer(1), new Object()});
		try {
			mcfb.afterPropertiesSet();
			mcfb.getObject();
			fail("Should have failed on getObject with mismatched argument types");
		}
		catch (NoSuchMethodException ex) {
			// expected
		}

		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("supertypes2");
		mcfb.setArguments(new Object[] {new ArrayList(), new ArrayList(), "hello", "bogus"});
		mcfb.afterPropertiesSet();
		assertEquals("hello", mcfb.getObject());

		mcfb = new MethodInvokingFactoryBean();
		mcfb.setTargetClass(MethodInvokerTests.TestClass1.class);
		mcfb.setTargetMethod("supertypes2");
		mcfb.setArguments(new Object[] {new ArrayList(), new ArrayList(), new Object()});
		try {
			mcfb.afterPropertiesSet();
			fail("Matched method when shouldn't have matched");
		}
		catch (NoSuchMethodException ex) {
			// expected
		}
	}

	public void testInvokeWithNullArgument() throws Exception {
		MethodInvoker methodInvoker = new MethodInvoker();
		methodInvoker.setTargetClass(MethodInvokerTests.TestClass1.class);
		methodInvoker.setTargetMethod("nullArgument");
		methodInvoker.setArguments(new Object[] {null});
		methodInvoker.prepare();
		methodInvoker.invoke();
	}

	public void testInvokeWithIntArgument() throws Exception {
		ArgumentConvertingMethodInvoker methodInvoker = new ArgumentConvertingMethodInvoker();
		methodInvoker.setTargetClass(MethodInvokerTests.TestClass1.class);
		methodInvoker.setTargetMethod("intArgument");
		methodInvoker.setArguments(new Object[] {new Integer(5)});
		methodInvoker.prepare();
		methodInvoker.invoke();

		methodInvoker = new ArgumentConvertingMethodInvoker();
		methodInvoker.setTargetClass(MethodInvokerTests.TestClass1.class);
		methodInvoker.setTargetMethod("intArgument");
		methodInvoker.setArguments(new Object[] {"5"});
		methodInvoker.prepare();
		methodInvoker.invoke();
	}

	public void testInvokeWithIntArguments() throws Exception {
		ArgumentConvertingMethodInvoker methodInvoker = new ArgumentConvertingMethodInvoker();
		methodInvoker.setTargetClass(MethodInvokerTests.TestClass1.class);
		methodInvoker.setTargetMethod("intArguments");
		methodInvoker.setArguments(new Object[] {new Integer[] {new Integer(5), new Integer(10)}});
		methodInvoker.prepare();
		methodInvoker.invoke();

		methodInvoker = new ArgumentConvertingMethodInvoker();
		methodInvoker.setTargetClass(MethodInvokerTests.TestClass1.class);
		methodInvoker.setTargetMethod("intArguments");
		methodInvoker.setArguments(new Object[] {new String[] {"5", "10"}});
		methodInvoker.prepare();
		methodInvoker.invoke();

		methodInvoker = new ArgumentConvertingMethodInvoker();
		methodInvoker.setTargetClass(MethodInvokerTests.TestClass1.class);
		methodInvoker.setTargetMethod("intArguments");
		methodInvoker.setArguments(new Integer[] {new Integer(5), new Integer(10)});
		methodInvoker.prepare();
		methodInvoker.invoke();

		methodInvoker = new ArgumentConvertingMethodInvoker();
		methodInvoker.setTargetClass(MethodInvokerTests.TestClass1.class);
		methodInvoker.setTargetMethod("intArguments");
		methodInvoker.setArguments(new String[] {"5", "10"});
		methodInvoker.prepare();
		methodInvoker.invoke();

		methodInvoker = new ArgumentConvertingMethodInvoker();
		methodInvoker.setTargetClass(MethodInvokerTests.TestClass1.class);
		methodInvoker.setTargetMethod("intArguments");
		methodInvoker.setArguments(new Object[] {new Integer(5), new Integer(10)});
		methodInvoker.prepare();
		methodInvoker.invoke();

		methodInvoker = new ArgumentConvertingMethodInvoker();
		methodInvoker.setTargetClass(MethodInvokerTests.TestClass1.class);
		methodInvoker.setTargetMethod("intArguments");
		methodInvoker.setArguments(new Object[] {"5", "10"});
		methodInvoker.prepare();
		methodInvoker.invoke();
	}

}

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