beanwrappertests.java

spring的源代码

/*
 * Copyright 2002-2006 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;

import java.beans.PropertyEditorSupport;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Properties;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;

import junit.framework.TestCase;
import org.hibernate.FlushMode;

import org.springframework.beans.propertyeditors.StringArrayPropertyEditor;
import org.springframework.beans.propertyeditors.StringTrimmerEditor;
import org.springframework.beans.support.DerivedFromProtectedBaseBean;
import org.springframework.util.StringUtils;

/**
 * @author Rod Johnson
 * @author Juergen Hoeller
 */
public class BeanWrapperTests extends TestCase {

	public void testSetWrappedInstanceOfSameClass() throws Exception {
		TestBean tb = new TestBean();
		BeanWrapper bw = new BeanWrapperImpl(tb);
		assertTrue(bw.isReadableProperty("age"));
		tb.setAge(11);

		TestBean tb2 = new TestBean();
		bw.setWrappedInstance(tb2);

		bw.setPropertyValue("age", new Integer(14));
		assertTrue("2nd changed", tb2.getAge() == 14);
		assertTrue("1 didn't change", tb.getAge() == 11);
	}

	public void testIsReadablePropertyNotReadable() {
		NoRead nr = new NoRead();
		BeanWrapper bw = new BeanWrapperImpl(nr);
		assertFalse(bw.isReadableProperty("age"));
	}

	/**
	 * Shouldn't throw an exception: should just return false
	 */
	public void testIsReadablePropertyNoSuchProperty() {
		NoRead nr = new NoRead();
		BeanWrapper bw = new BeanWrapperImpl(nr);
		assertFalse(bw.isReadableProperty("xxxxx"));
	}

	public void testIsReadablePropertyNull() {
		NoRead nr = new NoRead();
		BeanWrapper bw = new BeanWrapperImpl(nr);
		try {
			bw.isReadableProperty(null);
			fail("Can't inquire into readability of null property");
		}
		catch (IllegalArgumentException ex) {
			// expected
		}
	}

	public void testIsWritablePropertyNull() {
		NoRead nr = new NoRead();
		BeanWrapper bw = new BeanWrapperImpl(nr);
		try {
			bw.isWritableProperty(null);
			fail("Can't inquire into writability of null property");
		}
		catch (IllegalArgumentException ex) {
			// expected
		}
	}

	public void testReadableAndWritableForIndexedProperties() {
		BeanWrapper bw = new BeanWrapperImpl(IndexedTestBean.class);

		assertTrue(bw.isReadableProperty("array"));
		assertTrue(bw.isReadableProperty("list"));
		assertTrue(bw.isReadableProperty("set"));
		assertTrue(bw.isReadableProperty("map"));
		assertFalse(bw.isReadableProperty("xxx"));

		assertTrue(bw.isWritableProperty("array"));
		assertTrue(bw.isWritableProperty("list"));
		assertTrue(bw.isWritableProperty("set"));
		assertTrue(bw.isWritableProperty("map"));
		assertFalse(bw.isWritableProperty("xxx"));

		assertTrue(bw.isReadableProperty("array[0]"));
		assertTrue(bw.isReadableProperty("array[0].name"));
		assertTrue(bw.isReadableProperty("list[0]"));
		assertTrue(bw.isReadableProperty("list[0].name"));
		assertTrue(bw.isReadableProperty("set[0]"));
		assertTrue(bw.isReadableProperty("set[0].name"));
		assertTrue(bw.isReadableProperty("map[key1]"));
		assertTrue(bw.isReadableProperty("map[key1].name"));
		assertTrue(bw.isReadableProperty("map[key4][0]"));
		assertTrue(bw.isReadableProperty("map[key4][0].name"));
		assertTrue(bw.isReadableProperty("map[key4][1]"));
		assertTrue(bw.isReadableProperty("map[key4][1].name"));
		assertFalse(bw.isReadableProperty("array[key1]"));

		assertTrue(bw.isWritableProperty("array[0]"));
		assertTrue(bw.isWritableProperty("array[0].name"));
		assertTrue(bw.isWritableProperty("list[0]"));
		assertTrue(bw.isWritableProperty("list[0].name"));
		assertTrue(bw.isWritableProperty("set[0]"));
		assertTrue(bw.isWritableProperty("set[0].name"));
		assertTrue(bw.isWritableProperty("map[key1]"));
		assertTrue(bw.isWritableProperty("map[key1].name"));
		assertTrue(bw.isWritableProperty("map[key4][0]"));
		assertTrue(bw.isWritableProperty("map[key4][0].name"));
		assertTrue(bw.isWritableProperty("map[key4][1]"));
		assertTrue(bw.isWritableProperty("map[key4][1].name"));
		assertFalse(bw.isWritableProperty("array[key1]"));
	}

	public void testTypeDeterminationForIndexedProperty() {
		BeanWrapper bw = new BeanWrapperImpl(IndexedTestBean.class);
		assertEquals(null, bw.getPropertyType("map[key0]"));

		bw = new BeanWrapperImpl(IndexedTestBean.class);
		bw.setPropertyValue("map[key0]", "my String");
		assertEquals(String.class, bw.getPropertyType("map[key0]"));

		bw = new BeanWrapperImpl(IndexedTestBean.class);
		bw.registerCustomEditor(String.class, "map[key0]", new StringTrimmerEditor(false));
		assertEquals(String.class, bw.getPropertyType("map[key0]"));
	}

	public void testSetWrappedInstanceOfDifferentClass() {
		ThrowsException tex = new ThrowsException();
		BeanWrapper bw = new BeanWrapperImpl(tex);

		TestBean tb2 = new TestBean();
		bw.setWrappedInstance(tb2);

		bw.setPropertyValue("age", new Integer(14));
		assertTrue("2nd changed", tb2.getAge() == 14);
	}

	public void testGetterThrowsException() {
		GetterBean gb = new GetterBean();
		BeanWrapper bw = new BeanWrapperImpl(gb);
		bw.setPropertyValue("name", "tom");
		assertTrue("Set name to tom", gb.getName().equals("tom"));
	}

	public void testEmptyPropertyValuesSet() {
		TestBean t = new TestBean();
		int age = 50;
		String name = "Tony";
		t.setAge(age);
		t.setName(name);
		try {
			BeanWrapper bw = new BeanWrapperImpl(t);
			assertTrue("age is OK", t.getAge() == age);
			assertTrue("name is OK", name.equals(t.getName()));
			bw.setPropertyValues(new MutablePropertyValues());
			// Check its unchanged
			assertTrue("age is OK", t.getAge() == age);
			assertTrue("name is OK", name.equals(t.getName()));
		}
		catch (BeansException ex) {
			fail("Shouldn't throw exception when everything is valid");
		}
	}

	public void testAllValid() {
		TestBean t = new TestBean();
		String newName = "tony";
		int newAge = 65;
		String newTouchy = "valid";
		try {
			BeanWrapper bw = new BeanWrapperImpl(t);
			//System.out.println(bw);
			MutablePropertyValues pvs = new MutablePropertyValues();
			pvs.addPropertyValue(new PropertyValue("age", new Integer(newAge)));
			pvs.addPropertyValue(new PropertyValue("name", newName));

			pvs.addPropertyValue(new PropertyValue("touchy", newTouchy));
			bw.setPropertyValues(pvs);
			assertTrue("Validly set property must stick", t.getName().equals(newName));
			assertTrue("Validly set property must stick", t.getTouchy().equals(newTouchy));
			assertTrue("Validly set property must stick", t.getAge() == newAge);
		}
		catch (BeansException ex) {
			fail("Shouldn't throw exception when everything is valid");
		}
	}

	public void testBeanWrapperUpdates() {
		TestBean t = new TestBean();
		int newAge = 33;
		try {
			BeanWrapper bw = new BeanWrapperImpl(t);
			t.setAge(newAge);
			Object bwAge = bw.getPropertyValue("age");
			assertTrue("Age is an integer", bwAge instanceof Integer);
			int bwi = ((Integer) bwAge).intValue();
			assertTrue("Bean wrapper must pick up changes", bwi == newAge);
		}
		catch (Exception ex) {
			fail("Shouldn't throw exception when everything is valid");
		}
	}

	public void testValidNullUpdate() {
		TestBean t = new TestBean();
		t.setName("Frank");	// we need to change it back
		t.setSpouse(t);
		BeanWrapper bw = new BeanWrapperImpl(t);
		assertTrue("name is not null to start off", t.getName() != null);
		bw.setPropertyValue("name", null);
		assertTrue("name is now null", t.getName() == null);
		// now test with non-string
		assertTrue("spouse is not null to start off", t.getSpouse() != null);
		bw.setPropertyValue("spouse", null);
		assertTrue("spouse is now null", t.getSpouse() == null);
	}

	public void testIgnoringIndexedProperty() {
		MutablePropertyValues values = new MutablePropertyValues();
		values.addPropertyValue("toBeIgnored[0]", new Integer(42));
		BeanWrapper wrapper = new BeanWrapperImpl(new Object());
		wrapper.setPropertyValues(values, true);
	}

	public void testBooleanObject() {
		BooleanTestBean tb = new BooleanTestBean();
		BeanWrapper bw = new BeanWrapperImpl(tb);

		try {
			bw.setPropertyValue("bool2", "true");
		}
		catch (BeansException ex) {
			fail("Should not throw BeansException: " + ex.getMessage());
		}
		assertTrue("Correct bool2 value", Boolean.TRUE.equals(bw.getPropertyValue("bool2")));
		assertTrue("Correct bool2 value", tb.getBool2().booleanValue());

		try {
			bw.setPropertyValue("bool2", "false");
		}
		catch (BeansException ex) {
			fail("Should not throw BeansException: " + ex.getMessage());
		}
		assertTrue("Correct bool2 value", Boolean.FALSE.equals(bw.getPropertyValue("bool2")));
		assertTrue("Correct bool2 value", !tb.getBool2().booleanValue());

	}

	public void testNumberObjects() {
		NumberTestBean tb = new NumberTestBean();
		BeanWrapper bw = new BeanWrapperImpl(tb);

		try {
			bw.setPropertyValue("short2", "2");
			bw.setPropertyValue("int2", "8");
			bw.setPropertyValue("long2", "6");
			bw.setPropertyValue("bigInteger", "3");
			bw.setPropertyValue("float2", "8.1");
			bw.setPropertyValue("double2", "6.1");
			bw.setPropertyValue("bigDecimal", "4.0");
		}
		catch (BeansException ex) {
			fail("Should not throw BeansException: " + ex.getMessage());
		}

		assertTrue("Correct short2 value", new Short("2").equals(bw.getPropertyValue("short2")));
		assertTrue("Correct short2 value", new Short("2").equals(tb.getShort2()));
		assertTrue("Correct int2 value", new Integer("8").equals(bw.getPropertyValue("int2")));
		assertTrue("Correct int2 value", new Integer("8").equals(tb.getInt2()));
		assertTrue("Correct long2 value", new Long("6").equals(bw.getPropertyValue("long2")));
		assertTrue("Correct long2 value", new Long("6").equals(tb.getLong2()));
		assertTrue("Correct bigInteger value", new BigInteger("3").equals(bw.getPropertyValue("bigInteger")));
		assertTrue("Correct bigInteger value", new BigInteger("3").equals(tb.getBigInteger()));
		assertTrue("Correct float2 value", new Float("8.1").equals(bw.getPropertyValue("float2")));
		assertTrue("Correct float2 value", new Float("8.1").equals(tb.getFloat2()));
		assertTrue("Correct double2 value", new Double("6.1").equals(bw.getPropertyValue("double2")));
		assertTrue("Correct double2 value", new Double("6.1").equals(tb.getDouble2()));
		assertTrue("Correct bigDecimal value", new BigDecimal("4.0").equals(bw.getPropertyValue("bigDecimal")));
		assertTrue("Correct bigDecimal value", new BigDecimal("4.0").equals(tb.getBigDecimal()));
	}

	public void testEnum() {
		EnumTest et = new EnumTest();
		BeanWrapper bw = new BeanWrapperImpl(et);

		bw.setPropertyValue("flushMode", "NEVER");
		assertEquals(FlushMode.NEVER, et.getFlushMode());

		try {
			bw.setPropertyValue("flushMode", "EVER");
			fail("Should have thrown TypeMismatchException");
		}
		catch (TypeMismatchException ex) {
			// expected
		}
	}

	public void testPropertiesProperty() throws Exception {
		PropsTest pt = new PropsTest();
		BeanWrapper bw = new BeanWrapperImpl(pt);
		bw.setPropertyValue("name", "ptest");