databindertests.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.validation;

import java.beans.PropertyEditorSupport;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;

import junit.framework.TestCase;

import org.springframework.beans.BeanWithObjectProperty;
import org.springframework.beans.DerivedTestBean;
import org.springframework.beans.ITestBean;
import org.springframework.beans.IndexedTestBean;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.NotWritablePropertyException;
import org.springframework.beans.PropertyValue;
import org.springframework.beans.SerializablePerson;
import org.springframework.beans.TestBean;
import org.springframework.beans.propertyeditors.CustomCollectionEditor;
import org.springframework.beans.propertyeditors.CustomNumberEditor;
import org.springframework.context.support.ResourceBundleMessageSource;
import org.springframework.context.support.StaticMessageSource;
import org.springframework.util.StringUtils;

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

	public void testBindingNoErrors() throws Exception {
		TestBean rod = new TestBean();
		DataBinder binder = new DataBinder(rod, "person");
		assertTrue(binder.isIgnoreUnknownFields());
		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("name", "Rod"));
		pvs.addPropertyValue(new PropertyValue("age", new Integer(32)));
		pvs.addPropertyValue(new PropertyValue("nonExisting", "someValue"));

		binder.bind(pvs);
		binder.close();

		assertTrue("changed name correctly", rod.getName().equals("Rod"));
		assertTrue("changed age correctly", rod.getAge() == 32);

		Map m = binder.getErrors().getModel();
		assertTrue("There is one element in map", m.size() == 2);
		TestBean tb = (TestBean) m.get("person");
		assertTrue("Same object", tb.equals(rod));
	}

	public void testBindingNoErrorsNotIgnoreUnknown() throws Exception {
		TestBean rod = new TestBean();
		DataBinder binder = new DataBinder(rod, "person");
		binder.setIgnoreUnknownFields(false);
		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("name", "Rod"));
		pvs.addPropertyValue(new PropertyValue("age", new Integer(32)));
		pvs.addPropertyValue(new PropertyValue("nonExisting", "someValue"));

		try {
			binder.bind(pvs);
			fail("Should have thrown NotWritablePropertyException");
		}
		catch (NotWritablePropertyException ex) {
			// expected
		}
	}

	public void testBindingWithErrors() throws Exception {
		TestBean rod = new TestBean();
		DataBinder binder = new DataBinder(rod, "person");
		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("name", "Rod"));
		pvs.addPropertyValue(new PropertyValue("age", "32x"));
		pvs.addPropertyValue(new PropertyValue("touchy", "m.y"));
		binder.bind(pvs);

		try {
			binder.close();
			fail("Should have thrown BindException");
		}
		catch (BindException ex) {
			assertTrue("changed name correctly", rod.getName().equals("Rod"));
			//assertTrue("changed age correctly", rod.getAge() == 32);

			Map m = binder.getErrors().getModel();
			//assertTrue("There are 3 element in map", m.size() == 1);
			TestBean tb = (TestBean) m.get("person");
			assertTrue("Same object", tb.equals(rod));

			BindException be = (BindException) m.get(BindException.ERROR_KEY_PREFIX + "person");
			assertTrue("Added itself to map", ex == be);
			assertTrue(be.hasErrors());
			assertTrue("Correct number of errors", be.getErrorCount() == 2);

			assertTrue("Has age errors", be.hasFieldErrors("age"));
			assertTrue("Correct number of age errors", be.getFieldErrorCount("age") == 1);
			assertEquals("32x", binder.getErrors().getFieldValue("age"));
			assertEquals("32x", binder.getErrors().getFieldError("age").getRejectedValue());
			assertEquals(0, tb.getAge());

			assertTrue("Has touchy errors", be.hasFieldErrors("touchy"));
			assertTrue("Correct number of touchy errors", be.getFieldErrorCount("touchy") == 1);
			assertEquals("m.y", binder.getErrors().getFieldValue("touchy"));
			assertEquals("m.y", binder.getErrors().getFieldError("touchy").getRejectedValue());
			assertNull(tb.getTouchy());
		}
	}

	public void testBindingWithErrorsAndCustomEditors() throws Exception {
		TestBean rod = new TestBean();
		DataBinder binder = new DataBinder(rod, "person");
		binder.registerCustomEditor(String.class, "touchy", new PropertyEditorSupport() {
			public void setAsText(String text) throws IllegalArgumentException {
				setValue("prefix_" + text);
			}
			public String getAsText() {
				return getValue().toString().substring(7);
			}
		});
		binder.registerCustomEditor(TestBean.class, "spouse", new PropertyEditorSupport() {
			public void setAsText(String text) throws IllegalArgumentException {
				setValue(new TestBean(text, 0));
			}
			public String getAsText() {
				return ((TestBean) getValue()).getName();
			}
		});
		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("name", "Rod"));
		pvs.addPropertyValue(new PropertyValue("age", "32x"));
		pvs.addPropertyValue(new PropertyValue("touchy", "m.y"));
		pvs.addPropertyValue(new PropertyValue("spouse", "Kerry"));
		binder.bind(pvs);

		try {
			binder.close();
			fail("Should have thrown BindException");
		}
		catch (BindException ex) {
			assertTrue("changed name correctly", rod.getName().equals("Rod"));
			//assertTrue("changed age correctly", rod.getAge() == 32);

			Map m = binder.getErrors().getModel();
			//assertTrue("There are 3 element in map", m.size() == 1);
			TestBean tb = (TestBean) m.get("person");
			assertTrue("Same object", tb.equals(rod));

			BindException be = (BindException) m.get(BindException.ERROR_KEY_PREFIX + "person");
			assertTrue("Added itself to map", ex == be);
			assertTrue(be.hasErrors());
			assertTrue("Correct number of errors", be.getErrorCount() == 2);

			assertTrue("Has age errors", be.hasFieldErrors("age"));
			assertTrue("Correct number of age errors", be.getFieldErrorCount("age") == 1);
			assertEquals("32x", binder.getErrors().getFieldValue("age"));
			assertEquals("32x", binder.getErrors().getFieldError("age").getRejectedValue());
			assertEquals(0, tb.getAge());

			assertTrue("Has touchy errors", be.hasFieldErrors("touchy"));
			assertTrue("Correct number of touchy errors", be.getFieldErrorCount("touchy") == 1);
			assertEquals("m.y", binder.getErrors().getFieldValue("touchy"));
			assertEquals("m.y", binder.getErrors().getFieldError("touchy").getRejectedValue());
			assertNull(tb.getTouchy());

			assertTrue("Does not have spouse errors", !be.hasFieldErrors("spouse"));
			assertEquals("Kerry", binder.getErrors().getFieldValue("spouse"));
			assertNotNull(tb.getSpouse());
		}
	}

	public void testBindingWithCustomEditorOnObjectField() {
		BeanWithObjectProperty tb = new BeanWithObjectProperty();
		DataBinder binder = new DataBinder(tb);
		binder.registerCustomEditor(Integer.class, "object", new CustomNumberEditor(Integer.class, true));
		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("object", "1"));
		binder.bind(pvs);
		assertEquals(new Integer(1), tb.getObject());
	}

	public void testBindingWithAllowedFields() throws Exception {
		TestBean rod = new TestBean();
		DataBinder binder = new DataBinder(rod);
		binder.setAllowedFields(new String[]{"name", "myparam"});
		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("name", "Rod"));
		pvs.addPropertyValue(new PropertyValue("age", "32x"));

		binder.bind(pvs);
		binder.close();

		assertTrue("changed name correctly", rod.getName().equals("Rod"));
		assertTrue("did not change age", rod.getAge() == 0);

		Map m = binder.getErrors().getModel();
		assertTrue("There is one element in map", m.size() == 2);
		TestBean tb = (TestBean) m.get("target");
		assertTrue("Same object", tb.equals(rod));
	}

	public void testBindingWithAllowedFieldsUsingAsterisks() throws Exception {
		TestBean rod = new TestBean();
		DataBinder binder = new DataBinder(rod, "person");
		binder.setAllowedFields(new String[]{"nam*", "*ouchy"});
		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("name", "Rod"));
		pvs.addPropertyValue(new PropertyValue("touchy", "Rod"));
		pvs.addPropertyValue(new PropertyValue("age", "32x"));

		binder.bind(pvs);
		binder.close();

		assertTrue("changed name correctly", "Rod".equals(rod.getName()));
		assertTrue("changed touchy correctly", "Rod".equals(rod.getTouchy()));
		assertTrue("did not change age", rod.getAge() == 0);

		Map m = binder.getErrors().getModel();
		assertTrue("There is one element in map", m.size() == 2);
		TestBean tb = (TestBean) m.get("person");
		assertTrue("Same object", tb.equals(rod));
	}

	/**
	 * Tests for required field, both null, non-existing and empty strings.
	 */
	public void testBindingWithRequiredFields() throws Exception {
		TestBean tb = new TestBean();
		tb.setSpouse(new TestBean());

		DataBinder binder = new DataBinder(tb, "person");
		binder.setRequiredFields(new String[]{"touchy", "name", "age", "date", "spouse.name"});

		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("touchy", ""));
		pvs.addPropertyValue(new PropertyValue("name", null));
		pvs.addPropertyValue(new PropertyValue("age", null));
		pvs.addPropertyValue(new PropertyValue("spouse.name", "     "));

		binder.bind(pvs);

		BindException ex = binder.getErrors();
		assertEquals("Wrong number of errors", 5, ex.getErrorCount());

		assertEquals("required", ex.getFieldError("touchy").getCode());
		assertEquals("", ex.getFieldValue("touchy"));
		assertEquals("required", ex.getFieldError("name").getCode());
		assertEquals("", ex.getFieldValue("name"));
		assertEquals("required", ex.getFieldError("age").getCode());
		assertEquals("", ex.getFieldValue("age"));
		assertEquals("required", ex.getFieldError("date").getCode());
		assertEquals("", ex.getFieldValue("date"));
		assertEquals("required", ex.getFieldError("spouse.name").getCode());
		assertEquals("", ex.getFieldValue("spouse.name"));
	}

	public void testBindingWithNestedObjectCreation() throws Exception {
		TestBean tb = new TestBean();

		DataBinder binder = new DataBinder(tb, "person");
		binder.registerCustomEditor(ITestBean.class, new PropertyEditorSupport() {
			public void setAsText(String text) throws IllegalArgumentException {
				setValue(new TestBean());
			}
		});

		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("spouse", "someValue"));
		pvs.addPropertyValue(new PropertyValue("spouse.name", "test"));
		binder.bind(pvs);

		assertNotNull(tb.getSpouse());
		assertEquals("test", tb.getSpouse().getName());
	}

	public void testCustomEditorForSingleProperty() {
		TestBean tb = new TestBean();
		tb.setSpouse(new TestBean());
		DataBinder binder = new DataBinder(tb, "tb");

		binder.registerCustomEditor(String.class, "name", new PropertyEditorSupport() {
			public void setAsText(String text) throws IllegalArgumentException {
				setValue("prefix" + text);
			}
			public String getAsText() {
				return ((String) getValue()).substring(6);
			}
		});

		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("name", "value"));
		pvs.addPropertyValue(new PropertyValue("touchy", "value"));
		pvs.addPropertyValue(new PropertyValue("spouse.name", "sue"));
		binder.bind(pvs);

		binder.getErrors().rejectValue("name", "someCode", "someMessage");
		binder.getErrors().rejectValue("touchy", "someCode", "someMessage");
		binder.getErrors().rejectValue("spouse.name", "someCode", "someMessage");

		assertEquals("", binder.getErrors().getNestedPath());
		assertEquals("value", binder.getErrors().getFieldValue("name"));
		assertEquals("prefixvalue", binder.getErrors().getFieldError("name").getRejectedValue());
		assertEquals("prefixvalue", tb.getName());
		assertEquals("value", binder.getErrors().getFieldValue("touchy"));
		assertEquals("value", binder.getErrors().getFieldError("touchy").getRejectedValue());
		assertEquals("value", tb.getTouchy());

		assertTrue(binder.getErrors().hasFieldErrors("spouse.*"));
		assertEquals(1, binder.getErrors().getFieldErrorCount("spouse.*"));
		assertEquals("spouse.name", binder.getErrors().getFieldError("spouse.*").getField());
	}

	public void testCustomEditorForPrimitiveProperty() {
		TestBean tb = new TestBean();
		DataBinder binder = new DataBinder(tb, "tb");

		binder.registerCustomEditor(int.class, "age", new PropertyEditorSupport() {