DataBinderFieldAccessTests.java example

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spring-framework-master
/*
 * Copyright 2002-2014 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.util.Map;

import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.NotWritablePropertyException;
import org.springframework.beans.NullValueInNestedPathException;
import org.springframework.beans.PropertyValue;
import org.springframework.tests.sample.beans.FieldAccessBean;
import org.springframework.tests.sample.beans.TestBean;

import static org.junit.Assert.*;

/**
 * @author Juergen Hoeller
 * @author Stephane Nicoll
 * @since 07.03.2006
 */
public class DataBinderFieldAccessTests {

	@Rule
	public final ExpectedException thrown = ExpectedException.none();

	@Test
	public void bindingNoErrors() throws Exception {
		FieldAccessBean rod = new FieldAccessBean();
		DataBinder binder = new DataBinder(rod, "person");
		assertTrue(binder.isIgnoreUnknownFields());
		binder.initDirectFieldAccess();
		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.getBindingResult().getModel();
		assertTrue("There is one element in map", m.size() == 2);
		FieldAccessBean tb = (FieldAccessBean) m.get("person");
		assertTrue("Same object", tb.equals(rod));
	}

	@Test
	public void bindingNoErrorsNotIgnoreUnknown() throws Exception {
		FieldAccessBean rod = new FieldAccessBean();
		DataBinder binder = new DataBinder(rod, "person");
		binder.initDirectFieldAccess();
		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
		}
	}

	@Test
	public void bindingWithErrors() throws Exception {
		FieldAccessBean rod = new FieldAccessBean();
		DataBinder binder = new DataBinder(rod, "person");
		binder.initDirectFieldAccess();
		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("name", "Rod"));
		pvs.addPropertyValue(new PropertyValue("age", "32x"));
		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<?, ?> map = binder.getBindingResult().getModel();
			//assertTrue("There are 3 element in map", m.size() == 1);
			FieldAccessBean tb = (FieldAccessBean) map.get("person");
			assertTrue("Same object", tb.equals(rod));

			BindingResult br = (BindingResult) map.get(BindingResult.MODEL_KEY_PREFIX + "person");
			assertTrue("Added itself to map", br == binder.getBindingResult());
			assertTrue(br.hasErrors());
			assertTrue("Correct number of errors", br.getErrorCount() == 1);

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

	@Test
	public void nestedBindingWithDefaultConversionNoErrors() throws Exception {
		FieldAccessBean rod = new FieldAccessBean();
		DataBinder binder = new DataBinder(rod, "person");
		assertTrue(binder.isIgnoreUnknownFields());
		binder.initDirectFieldAccess();
		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("spouse.name", "Kerry"));
		pvs.addPropertyValue(new PropertyValue("spouse.jedi", "on"));

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

		assertEquals("Kerry", rod.getSpouse().getName());
		assertTrue((rod.getSpouse()).isJedi());
	}

	@Test
	public void nestedBindingWithDisabledAutoGrow() throws Exception {
		FieldAccessBean rod = new FieldAccessBean();
		DataBinder binder = new DataBinder(rod, "person");
		binder.setAutoGrowNestedPaths(false);
		binder.initDirectFieldAccess();
		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("spouse.name", "Kerry"));

		thrown.expect(NullValueInNestedPathException.class);
		binder.bind(pvs);
	}

	@Test
	public void bindingWithErrorsAndCustomEditors() throws Exception {
		FieldAccessBean rod = new FieldAccessBean();
		DataBinder binder = new DataBinder(rod, "person");
		binder.initDirectFieldAccess();
		binder.registerCustomEditor(TestBean.class, "spouse", new PropertyEditorSupport() {
			@Override
			public void setAsText(String text) throws IllegalArgumentException {
				setValue(new TestBean(text, 0));
			}
			@Override
			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("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<?, ?> model = binder.getBindingResult().getModel();
			//assertTrue("There are 3 element in map", m.size() == 1);
			FieldAccessBean tb = (FieldAccessBean) model.get("person");
			assertTrue("Same object", tb.equals(rod));

			BindingResult br = (BindingResult) model.get(BindingResult.MODEL_KEY_PREFIX + "person");
			assertTrue("Added itself to map", br == binder.getBindingResult());
			assertTrue(br.hasErrors());
			assertTrue("Correct number of errors", br.getErrorCount() == 1);

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

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

}