propertyresolvertest.java

Wicket一个开发Java Web应用程序框架。它使得开发web应用程序变得容易而轻松。 Wicket利用一个POJO data beans组件使得它可以与任何持久层技术相结合。

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.wicket.util.lang;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Vector;

import junit.framework.TestCase;

import org.apache.wicket.WicketRuntimeException;
import org.apache.wicket.protocol.http.HttpSessionStore;
import org.apache.wicket.protocol.http.MockWebApplication;
import org.apache.wicket.protocol.http.WebApplication;
import org.apache.wicket.session.ISessionStore;
import org.apache.wicket.util.convert.ConversionException;
import org.apache.wicket.util.convert.ConverterLocator;

/**
 * @author jcompagner
 * 
 */
public class PropertyResolverTest extends TestCase
{
	private static final PropertyResolverConverter CONVERTER = new PropertyResolverConverter(
		new ConverterLocator(), Locale.US);

	private Person person;
	private MockWebApplication app;

	/**
	 * @see junit.framework.TestCase#setUp()
	 */
	protected void setUp() throws Exception
	{
		person = new Person();
		app = new MockWebApplication(new WebApplication()
		{

			public Class getHomePage()
			{
				return null;
			}

			protected void outputDevelopmentModeWarning()
			{
				// Do nothing.
			}

			protected ISessionStore newSessionStore()
			{
				// Don't use a filestore, or we spawn lots of threads, which makes things slow.
				return new HttpSessionStore(this);
			}

		}, "/foo");
	}

	protected void tearDown() throws Exception
	{
		super.tearDown();
		PropertyResolver.destroy(app.getApplication());
	}

	/**
	 * @throws Exception
	 */
	public void testSimpleExpression() throws Exception
	{
		String name = (String)PropertyResolver.getValue("name", person);
		assertNull(name);

		PropertyResolver.setValue("name", person, "wicket", CONVERTER);
		name = (String)PropertyResolver.getValue("name", person);
		assertEquals(name, "wicket");
	}

	/**
	 * @throws Exception
	 */
	public void testPrimitiveValue() throws Exception
	{
		Integer integer = (Integer)PropertyResolver.getValue("age", person);
		assertTrue(integer.intValue() == 0);

		PropertyResolver.setValue("age", person, new Integer(10), CONVERTER);
		integer = (Integer)PropertyResolver.getValue("age", person);
		assertTrue(integer.intValue() == 10);

		try
		{
			PropertyResolver.setValue("age", person, null, CONVERTER);
			fail("primitive type can't be set to null");
		}
		catch (ConversionException ce)
		{
			// ignore should happen
		}
	}

	/**
	 * @throws Exception
	 */
	public void testPathExpression() throws Exception
	{
		person.setAddress(new Address());
		PropertyResolver.setValue("address.street", person, "wicket-street", CONVERTER);
		String street = (String)PropertyResolver.getValue("address.street", person);
		assertEquals(street, "wicket-street");

	}

	/**
	 * @throws Exception
	 */
	public void testNull() throws Exception
	{
		String street = (String)PropertyResolver.getValue("address.street", person);
		assertNull(street);
	}

	/**
	 * @throws Exception
	 */
	public void testNullCreation() throws Exception
	{
		PropertyResolver.setValue("address.street", person, "wicket-street", CONVERTER);
		String street = (String)PropertyResolver.getValue("address.street", person);
		assertEquals(street, "wicket-street");

		try
		{
			PropertyResolver.setValue("country.name", person, "US", CONVERTER);
			throw new Exception(
				"name can't be set on a country that doesn't have default constructor");
		}
		catch (WicketRuntimeException ex)
		{
		}
	}

	/**
	 * @throws Exception
	 */
	public void testGetterOnly() throws Exception
	{
		PropertyResolver.setValue("country", person, new Country("US"), CONVERTER);
		PropertyResolver.getValue("country.name", person);

		try
		{
			PropertyResolver.setValue("country.name", person, "NL", CONVERTER);
		}
		catch (WicketRuntimeException ex)
		{
		}
	}

	/**
	 * @throws Exception
	 */
	public void testPathExpressionWithConversion() throws Exception
	{
		person.setAddress(new Address());
		PropertyResolver.setValue("address.number", person, "10", CONVERTER);
		Integer number = (Integer)PropertyResolver.getValue("address.number", person);
		assertEquals(number, new Integer(10));

		try
		{
			PropertyResolver.setValue("address.number", person, "10a", CONVERTER);
			throw new Exception("Conversion error should be thrown");
		}
		catch (ConversionException ex)
		{
		}

	}

	/**
	 * @throws Exception
	 */
	public void testMapLookup() throws Exception
	{
		Address address = new Address();
		PropertyResolver.setValue("addressMap", person, new HashMap(), CONVERTER);
		PropertyResolver.setValue("addressMap.address", person, address, CONVERTER);
		PropertyResolver.setValue("addressMap.address.street", person, "wicket-street", CONVERTER);
		String street = (String)PropertyResolver.getValue("addressMap.address.street", person);
		assertEquals(street, "wicket-street");
	}

	/**
	 * @throws Exception
	 */
	public void testMapWithDotLookup() throws Exception
	{
		Address address = new Address();
		HashMap hm = new HashMap();
		PropertyResolver.setValue("addressMap", person, hm, CONVERTER);
		PropertyResolver.setValue("addressMap[address.test]", person, address, CONVERTER);
		assertNotNull(hm.get("address.test"));
		PropertyResolver.setValue("addressMap[address.test].street", person, "wicket-street",
			CONVERTER);
		String street = (String)PropertyResolver.getValue("addressMap[address.test].street", person);
		assertEquals(street, "wicket-street");
	}

	/**
	 * @throws Exception
	 */
	public void testListLookup() throws Exception
	{
		PropertyResolver.setValue("addressList", person, new ArrayList(), CONVERTER);
		PropertyResolver.setValue("addressList.0", person, new Address(), CONVERTER);
		PropertyResolver.setValue("addressList.10", person, new Address(), CONVERTER);
		PropertyResolver.setValue("addressList.1", person, new Address(), CONVERTER);
		PropertyResolver.setValue("addressList.1.street", person, "wicket-street", CONVERTER);

		String street = (String)PropertyResolver.getValue("addressList.0.street", person);
		assertNull(street);
		street = (String)PropertyResolver.getValue("addressList.1.street", person);
		assertEquals(street, "wicket-street");
	}

	/**
	 * @throws Exception
	 */
	public void testArrayLookup() throws Exception
	{
		PropertyResolver.setValue("addressArray", person, new Address[] { new Address(), null },
			CONVERTER);
		PropertyResolver.setValue("addressArray.0.street", person, "wicket-street", CONVERTER);
		String street = (String)PropertyResolver.getValue("addressArray.0.street", person);
		assertEquals(street, "wicket-street");

		PropertyResolver.setValue("addressArray.1.street", person, "wicket-street", CONVERTER);
		street = (String)PropertyResolver.getValue("addressArray.1.street", person);
		assertEquals(street, "wicket-street");
	}

	/**
	 * @throws Exception
	 */
	public void testArrayLookupByBrackets() throws Exception
	{
		PropertyResolver.setValue("addressArray", person, new Address[] { new Address(), null },
			CONVERTER);
		PropertyResolver.setValue("addressArray[0].street", person, "wicket-street", CONVERTER);
		String street = (String)PropertyResolver.getValue("addressArray[0].street", person);
		assertEquals(street, "wicket-street");

		PropertyResolver.setValue("addressArray[1].street", person, "wicket-street", CONVERTER);
		street = (String)PropertyResolver.getValue("addressArray[1].street", person);
		assertEquals(street, "wicket-street");
	}

	/**
	 * @throws Exception
	 */
	public void testPropertyByIndexLookup() throws Exception
	{
		PropertyResolver.setValue("addressAt.0", person, new Address(), CONVERTER);
		PropertyResolver.setValue("addressAt.0.street", person, "wicket-street", CONVERTER);
		String street = (String)PropertyResolver.getValue("addressAt.0.street", person);
		assertEquals(street, "wicket-street");
	}

	/**
	 * @throws Exception
	 */
	public void testListSizeLookup() throws Exception
	{
		List/* <Address> */addresses = new ArrayList/* <Address> */();
		addresses.add(new Address());
		addresses.add(new Address());
		person.setAddressList(addresses);
		Object size = PropertyResolver.getValue("addressList.size", person);
		assertEquals(size, new Integer(2));
		size = PropertyResolver.getValue("addressList.size()", person);
		assertEquals(size, new Integer(2));
	}

	/**
	 * @throws Exception
	 */
	public void testMapSizeLookup() throws Exception
	{
		Map/* <String, Address> */addresses = new HashMap/* <String, Address> */();
		Address address = new Address();
		addresses.put("size", address);
		addresses.put("test", new Address());
		person.setAddressMap(addresses);
		Object addressFromMap = PropertyResolver.getValue("addressMap.size", person);
		assertEquals(addressFromMap, address);
		Object size = PropertyResolver.getValue("addressMap.size()", person);
		assertEquals(size, new Integer(2));
	}

	/**
	 * @throws Exception
	 */
	public void testArraySizeLookup() throws Exception
	{
		person.setAddressArray(new Address[] { new Address(), new Address() });
		Object size = PropertyResolver.getValue("addressArray.length", person);
		assertEquals(size, new Integer(2));
		size = PropertyResolver.getValue("addressArray.size", person);
		assertEquals(size, new Integer(2));
	}

	/**
	 * @throws Exception
	 */
	public void testMethodLookup() throws Exception
	{
		Address[] addresses = new Address[] { new Address(), new Address() };
		person.setAddressArray(addresses);
		Object value = PropertyResolver.getValue("getAddressArray()", person);
		assertEquals(value, addresses);
	}

	/**
	 * @throws Exception
	 */
	public void testField() throws Exception
	{
		Address address = new Address();
		PropertyResolver.setValue("address2", person, address, CONVERTER);
		Address address2 = (Address)PropertyResolver.getValue("address2", person);
		assertEquals(address, address2);

		try
		{
			PropertyResolver.setValue("address3", person, address, CONVERTER);
			throw new RuntimeException("Shoudln't come here");
		}
		catch (RuntimeException ex)
		{

		}
	}

	/**
	 * @throws Exception
	 */
	public void testPrivateField() throws Exception
	{
		Address address = new Address();
		PropertyResolver.setValue("privateAddress", person, address, CONVERTER);
		Address address2 = (Address)PropertyResolver.getValue("privateAddress", person);
		assertEquals(address, address2);
	}

	/**
	 * @throws Exception
	 */
	public void testPrivateFieldOfSuperClass() throws Exception
	{
		Person2 person2 = new Person2();
		Address address = new Address();
		PropertyResolver.setValue("privateAddress", person2, address, CONVERTER);
		Address address2 = (Address)PropertyResolver.getValue("privateAddress", person2);
		assertEquals(address, address2);
	}

	/**
	 * 
	 */
	public void testGetTargetClass()
	{
		Address address = new Address();

		Class clazz = PropertyResolver.getPropertyClass("number", address);
		assertEquals(int.class, clazz);

		Person person = new Person();
		person.setAddress(new Address());

		clazz = PropertyResolver.getPropertyClass("address.number", person);
		assertEquals(int.class, clazz);

		person.setAddressArray(new Address[] { new Address(), new Address() });
		clazz = PropertyResolver.getPropertyClass("addressArray[0]", person);
		assertEquals(Address.class, clazz);

		clazz = PropertyResolver.getPropertyClass("addressArray[0].number", person);
		assertEquals(int.class, clazz);
	}

	/**
	 * 
	 */
	public void testGetTargetField()
	{
		Address address = new Address();

		Field field = PropertyResolver.getPropertyField("number", address);
		assertEquals(field.getName(), "number");
		assertEquals(field.getType(), int.class);

		Person person = new Person();
		person.setAddress(new Address());

		field = PropertyResolver.getPropertyField("address.number", person);
		assertEquals(field.getName(), "number");
		assertEquals(field.getType(), int.class);

		person.setAddressArray(new Address[] { new Address(), new Address() });
		field = PropertyResolver.getPropertyField("addressArray[0].number", person);
		assertEquals(field.getName(), "number");
		assertEquals(field.getType(), int.class);
	}

	/**
	 * 
	 */
	public void testGetTargetGetter()
	{
		Address address = new Address();

		Method method = PropertyResolver.getPropertyGetter("number", address);
		assertEquals(method.getName(), "getNumber");
		assertEquals(method.getReturnType(), int.class);

		Person person = new Person();
		person.setAddress(new Address());

		method = PropertyResolver.getPropertyGetter("address.number", person);
		assertEquals(method.getName(), "getNumber");
		assertEquals(method.getReturnType(), int.class);

		person.setAddressArray(new Address[] { new Address(), new Address() });
		method = PropertyResolver.getPropertyGetter("addressArray[0].number", person);
		assertEquals(method.getName(), "getNumber");
		assertEquals(method.getReturnType(), int.class);
	}

	/**
	 * 
	 */
	public void testGetTargetSetter()
	{
		Address address = new Address();

		// FIXME: We shouldn't need to run this first in order for the getName() stuff to work.
		// See WICKET-668 for details.
		// PropertyResolver.setValue("number", address, new Integer(1), CONVERTER);

		Method method = PropertyResolver.getPropertySetter("number", address);
		assertEquals(method.getName(), "setNumber");

		Person person = new Person();
		person.setAddress(new Address());

		method = PropertyResolver.getPropertySetter("address.number", person);
		assertEquals(method.getName(), "setNumber");

		person.setAddressArray(new Address[] { new Address(), new Address() });
		method = PropertyResolver.getPropertySetter("addressArray[0].number", person);
		assertEquals(method.getName(), "setNumber");
	}

	/**
	 * @throws Exception
	 */
	public void testOverriddenGetter() throws Exception
	{
		Person2 person = new Person2();
		person.setName("foo");

		String name = (String)PropertyResolver.getValue("name", person);
		assertEquals("foo", name);

		PropertyResolver.setValue("name", person, "bar", CONVERTER);

		name = (String)PropertyResolver.getValue("name", person);
		assertEquals("bar", name);

	}

	/**
	 * Used for models in testing.
	 */
	private static class InnerVectorPOJO extends Vector
	{
		private static final long serialVersionUID = 1L;

		/**
		 * 
		 */
		public String testValue = "vector";
	}

	/**
	 * Tests the PropertyModel with vector.
	 */
	public void testPropertyModel()
	{
		String value = (String)PropertyResolver.getValue("testValue", new InnerVectorPOJO());
		assertEquals("vector", value);
	}
}