Java tutorial
/* * Copyright 2002-2007 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.hdiv.web.servlet.tags.form; import java.beans.PropertyEditor; import java.io.StringReader; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.List; import java.util.Locale; import java.util.Map; import javax.servlet.jsp.JspException; import javax.servlet.jsp.tagext.Tag; import org.dom4j.Attribute; import org.dom4j.Document; import org.dom4j.DocumentException; import org.dom4j.Element; import org.dom4j.io.SAXReader; import org.hdiv.beans.TestBean; import org.springframework.mock.web.MockHttpServletRequest; import org.springframework.validation.BeanPropertyBindingResult; import org.springframework.web.servlet.support.BindStatus; import org.springframework.web.servlet.tags.form.SelectTag; import org.springframework.web.servlet.tags.form.TagWriter; /** * @author Gorka Vicente * @since 2.0.6 */ public class SelectTagTests extends AbstractFormTagTests { private static final Locale LOCALE_AT = new Locale("de", "AT"); private static final Locale LOCALE_NL = new Locale("nl", "NL"); private SelectTagHDIV tag; private TestBean bean; private boolean confidentiality; protected void onSetUp() { this.tag = new SelectTagHDIV() { protected TagWriter createTagWriter() { return new TagWriter(getWriter()); } }; this.tag.setPageContext(getPageContext()); confidentiality = ((Boolean) getHdivContext().getBean("confidentiality")).booleanValue(); } public void testEmptyItems() throws Exception { this.tag.setPath("country"); this.tag.setItems(Collections.EMPTY_LIST); this.tag.setItemValue("isoCode"); this.tag.setItemLabel("name"); int result = this.tag.doStartTag(); assertEquals(Tag.SKIP_BODY, result); String output = getWriter().toString(); assertEquals("<select id=\"country\" name=\"country\"></select>", output); } public void testNullItems() throws Exception { this.tag.setPath("country"); this.tag.setItems(null); this.tag.setItemValue("isoCode"); this.tag.setItemLabel("name"); int result = this.tag.doStartTag(); assertEquals(Tag.SKIP_BODY, result); String output = getWriter().toString(); assertEquals("<select id=\"country\" name=\"country\"></select>", output); } public void testWithList() throws Exception { this.tag.setPath("country"); this.tag.setItems(Country.getCountries()); assertList(true); } public void testWithResolvedList() throws Exception { this.tag.setPath("country"); this.tag.setItems("${countries}"); assertList(true); } public void testWithOtherValue() throws Exception { TestBean tb = getTestBean(); tb.setCountry("AT"); this.tag.setPath("country"); this.tag.setItems(Country.getCountries()); assertList(false); } public void testWithNullValue() throws Exception { TestBean tb = getTestBean(); tb.setCountry(null); this.tag.setPath("country"); this.tag.setItems(Country.getCountries()); assertList(false); } public void testWithListAndNoLabel() throws Exception { this.tag.setPath("country"); this.tag.setItems("${countries}"); this.tag.setItemValue("isoCode"); int result = this.tag.doStartTag(); assertEquals(Tag.SKIP_BODY, result); validateOutput(getWriter().toString(), true); } public void testWithMap() throws Exception { this.tag.setPath("sex"); this.tag.setItems("${sexes}"); int result = this.tag.doStartTag(); assertEquals(Tag.SKIP_BODY, result); } public void testWithInvalidList() throws Exception { this.tag.setPath("country"); this.tag.setItems("${other}"); this.tag.setItemValue("isoCode"); try { this.tag.doStartTag(); fail("Must not be able to use a non-Collection typed value as the value of 'items'"); } catch (JspException expected) { String message = expected.getMessage(); assertTrue(message.indexOf("items") > -1); assertTrue(message.indexOf("org.hdiv.beans.TestBean") > -1); } } public void testWithNestedOptions() throws Exception { this.tag.setPath("country"); int result = this.tag.doStartTag(); assertEquals(Tag.EVAL_BODY_INCLUDE, result); BindStatus value = (BindStatus) getPageContext().getAttribute(SelectTag.LIST_VALUE_PAGE_ATTRIBUTE); assertEquals("Selected country not exposed in page context", "UK", value.getValue()); result = this.tag.doEndTag(); assertEquals(Tag.EVAL_PAGE, result); this.tag.doFinally(); String output = getWriter().toString(); assertTrue(output.startsWith("<select ")); assertTrue(output.endsWith("</select>")); assertContainsAttribute(output, "name", "country"); } public void testWithStringArray() throws Exception { this.tag.setPath("name"); this.tag.setItems(getNames()); assertStringArray(); } public void testWithResolvedStringArray() throws Exception { this.tag.setPath("name"); this.tag.setItems("${names}"); assertStringArray(); } public void testWithIntegerArray() throws Exception { this.tag.setPath("someIntegerArray"); Integer[] array = new Integer[50]; for (int i = 0; i < array.length; i++) { array[i] = new Integer(i); } this.tag.setItems(array); int result = this.tag.doStartTag(); assertEquals(Tag.SKIP_BODY, result); String output = getWriter().toString(); output = "<doc>" + output + "</doc>"; SAXReader reader = new SAXReader(); Document document = reader.read(new StringReader(output)); Element rootElement = document.getRootElement(); assertEquals(2, rootElement.elements().size()); Element selectElement = rootElement.element("select"); assertEquals("select", selectElement.getName()); assertEquals("someIntegerArray", selectElement.attribute("name").getValue()); List children = selectElement.elements(); assertEquals("Incorrect number of children", array.length, children.size()); Element e = (Element) selectElement.selectSingleNode("option[text() = '12']"); assertEquals("'12' node not selected", "selected", e.attribute("selected").getValue()); e = (Element) selectElement.selectSingleNode("option[text() = '34']"); assertEquals("'34' node not selected", "selected", e.attribute("selected").getValue()); } public void testWithFloatCustom() throws Exception { PropertyEditor propertyEditor = new SimpleFloatEditor(); BeanPropertyBindingResult errors = new BeanPropertyBindingResult(getTestBean(), COMMAND_NAME); errors.getPropertyAccessor().registerCustomEditor(Float.class, propertyEditor); exposeBindingResult(errors); this.tag.setPath("myFloat"); Float[] array = new Float[] { new Float("12.30"), new Float("12.32"), new Float("12.34"), new Float("12.36"), new Float("12.38"), new Float("12.40"), new Float("12.42"), new Float("12.44"), new Float("12.46"), new Float("12.48") }; this.tag.setItems(array); int result = this.tag.doStartTag(); assertEquals(Tag.SKIP_BODY, result); String output = getWriter().toString(); assertTrue(output.startsWith("<select ")); assertTrue(output.endsWith("</select>")); SAXReader reader = new SAXReader(); Document document = reader.read(new StringReader(output)); Element rootElement = document.getRootElement(); assertEquals("select", rootElement.getName()); assertEquals("myFloat", rootElement.attribute("name").getValue()); List children = rootElement.elements(); assertEquals("Incorrect number of children", array.length, children.size()); Element e = (Element) rootElement.selectSingleNode("option[text() = '12.34f']"); assertEquals("'12.34' node not selected", "selected", e.attribute("selected").getValue()); e = (Element) rootElement.selectSingleNode("option[text() = '12.32f']"); assertNull("'12.32' node incorrectly selected", e.attribute("selected")); } public void testWithMultiList() throws Exception { List list = new ArrayList(); list.add(Country.COUNTRY_UK); list.add(Country.COUNTRY_AT); this.bean.setSomeList(list); this.tag.setPath("someList"); this.tag.setItems("${countries}"); this.tag.setItemValue("isoCode"); int result = this.tag.doStartTag(); assertEquals(Tag.SKIP_BODY, result); String output = getWriter().toString(); output = "<doc>" + output + "</doc>"; SAXReader reader = new SAXReader(); Document document = reader.read(new StringReader(output)); Element rootElement = document.getRootElement(); assertEquals(2, rootElement.elements().size()); Element selectElement = rootElement.element("select"); assertEquals("select", selectElement.getName()); assertEquals("someList", selectElement.attribute("name").getValue()); List children = selectElement.elements(); assertEquals("Incorrect number of children", 4, children.size()); String hdivValue = this.confidentiality ? "3" : "UK"; Element e = (Element) selectElement.selectSingleNode("option[@value = '" + hdivValue + "']"); assertEquals("UK node not selected", "selected", e.attribute("selected").getValue()); hdivValue = this.confidentiality ? "1" : "AT"; e = (Element) selectElement.selectSingleNode("option[@value = '" + hdivValue + "']"); assertEquals("AT node not selected", "selected", e.attribute("selected").getValue()); } public void testWithMultiMap() throws Exception { Map someMap = new HashMap(); someMap.put("M", "Male"); someMap.put("F", "Female"); this.bean.setSomeMap(someMap); this.tag.setPath("someMap"); this.tag.setItems("${sexes}"); int result = this.tag.doStartTag(); assertEquals(Tag.SKIP_BODY, result); String output = getWriter().toString(); output = "<doc>" + output + "</doc>"; SAXReader reader = new SAXReader(); Document document = reader.read(new StringReader(output)); Element rootElement = document.getRootElement(); assertEquals(2, rootElement.elements().size()); Element selectElement = rootElement.element("select"); assertEquals("select", selectElement.getName()); assertEquals("someMap", selectElement.attribute("name").getValue()); List children = selectElement.elements(); assertEquals("Incorrect number of children", 2, children.size()); String hdivValue = this.confidentiality ? "1" : "M"; Element e = (Element) selectElement.selectSingleNode("option[@value = '" + hdivValue + "']"); assertEquals("M node not selected", "selected", e.attribute("selected").getValue()); hdivValue = this.confidentiality ? "2" : "F"; e = (Element) selectElement.selectSingleNode("option[@value = '" + hdivValue + "']"); assertEquals("F node not selected", "selected", e.attribute("selected").getValue()); } public void testMultiWithEmptyCollection() throws Exception { this.bean.setSomeList(new ArrayList()); this.tag.setPath("someList"); this.tag.setItems("${countries}"); this.tag.setItemValue("isoCode"); int result = this.tag.doStartTag(); assertEquals(Tag.SKIP_BODY, result); String output = getWriter().toString(); output = "<doc>" + output + "</doc>"; SAXReader reader = new SAXReader(); Document document = reader.read(new StringReader(output)); Element rootElement = document.getRootElement(); assertEquals(2, rootElement.elements().size()); Element selectElement = rootElement.element("select"); assertEquals("select", selectElement.getName()); assertEquals("someList", selectElement.attribute("name").getValue()); assertEquals("multiple", selectElement.attribute("multiple").getValue()); List children = selectElement.elements(); assertEquals("Incorrect number of children", 4, children.size()); Element inputElement = rootElement.element("input"); assertNotNull(inputElement); } private void assertStringArray() throws JspException, DocumentException { int result = this.tag.doStartTag(); assertEquals(Tag.SKIP_BODY, result); String output = getWriter().toString(); assertTrue(output.startsWith("<select ")); assertTrue(output.endsWith("</select>")); SAXReader reader = new SAXReader(); Document document = reader.read(new StringReader(output)); Element rootElement = document.getRootElement(); assertEquals("select", rootElement.getName()); assertEquals("name", rootElement.attribute("name").getValue()); List children = rootElement.elements(); assertEquals("Incorrect number of children", 4, children.size()); Element e = (Element) rootElement.selectSingleNode("option[text() = 'Rob']"); assertEquals("Rob node not selected", "selected", e.attribute("selected").getValue()); } private String[] getNames() { return new String[] { "Rod", "Rob", "Juergen", "Adrian" }; } private Map getSexes() { Map sexes = new HashMap(); sexes.put("F", "Female"); sexes.put("M", "Male"); return sexes; } protected void extendRequest(MockHttpServletRequest request) { super.extendRequest(request); request.setAttribute("countries", Country.getCountries()); request.setAttribute("sexes", getSexes()); request.setAttribute("other", new TestBean()); request.setAttribute("names", getNames()); } private void assertList(boolean selected) throws JspException, DocumentException { this.tag.setItemValue("isoCode"); this.tag.setItemLabel("name"); this.tag.setSize("5"); int result = this.tag.doStartTag(); assertEquals(Tag.SKIP_BODY, result); String output = getWriter().toString(); validateOutput(output, selected); assertContainsAttribute(output, "size", "5"); } private void validateOutput(String output, boolean selected) throws DocumentException { SAXReader reader = new SAXReader(); Document document = reader.read(new StringReader(output)); Element rootElement = document.getRootElement(); assertEquals("select", rootElement.getName()); assertEquals("country", rootElement.attribute("name").getValue()); List children = rootElement.elements(); assertEquals("Incorrect number of children", 4, children.size()); String hdivValue = this.confidentiality ? "3" : "UK"; Element e = (Element) rootElement.selectSingleNode("option[@value = '" + hdivValue + "']"); Attribute selectedAttr = e.attribute("selected"); if (selected) { assertTrue(selectedAttr != null && "selected".equals(selectedAttr.getValue())); } else { assertNull(selectedAttr); } } protected TestBean createTestBean() { this.bean = new TestBean(); this.bean.setName("Rob"); this.bean.setCountry("UK"); this.bean.setSex("M"); this.bean.setMyFloat(new Float("12.34")); this.bean.setSomeIntegerArray(new Integer[] { new Integer(12), new Integer(34) }); return this.bean; } private TestBean getTestBean() { return (TestBean) getPageContext().getRequest().getAttribute(COMMAND_NAME); } }