spring OptionsTagTests 源码
spring OptionsTagTests 代码
文件路径：/spring-webmvc/src/test/java/org/springframework/web/servlet/tags/form/OptionsTagTests.java
/*
* Copyright 2002-2021 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
*
* https://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.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.Map;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.jsp.tagext.BodyTag;
import jakarta.servlet.jsp.tagext.Tag;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.Node;
import org.dom4j.io.SAXReader;
import org.junit.jupiter.api.Test;
import org.springframework.beans.testfixture.beans.TestBean;
import org.springframework.validation.BeanPropertyBindingResult;
import org.springframework.validation.BindingResult;
import org.springframework.validation.Errors;
import org.springframework.web.servlet.support.BindStatus;
import org.springframework.web.servlet.support.RequestContext;
import org.springframework.web.servlet.tags.RequestContextAwareTag;
import org.springframework.web.testfixture.servlet.MockHttpServletRequest;
import org.springframework.web.testfixture.servlet.MockPageContext;
import static org.assertj.core.api.Assertions.assertThat;
/**
* @author Rob Harrop
* @author Juergen Hoeller
* @author Scott Andrews
* @author Jeremy Grelle
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
class OptionsTagTests extends AbstractHtmlElementTagTests {
private static final String COMMAND_NAME = "testBean";
private SelectTag selectTag;
private OptionsTag tag;
@Override
@SuppressWarnings("serial")
protected void onSetUp() {
this.tag = new OptionsTag() {
@Override
protected TagWriter createTagWriter() {
return new TagWriter(getWriter());
}
};
selectTag = new SelectTag() {
@Override
protected TagWriter createTagWriter() {
return new TagWriter(getWriter());
}
@Override
public String getName() {
// Should not be used other than to delegate to
// RequestDataValueDataProcessor
return "testName";
}
};
selectTag.setPageContext(getPageContext());
this.tag.setParent(selectTag);
this.tag.setPageContext(getPageContext());
}
@Test
void withCollection() throws Exception {
getPageContext().setAttribute(
SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, new BindStatus(getRequestContext(), "testBean.country", false));
this.tag.setItems(Country.getCountries());
this.tag.setItemValue("isoCode");
this.tag.setItemLabel("name");
this.tag.setId("myOption");
this.tag.setCssClass("myClass");
this.tag.setOnclick("CLICK");
int result = this.tag.doStartTag();
assertThat(result).isEqualTo(Tag.SKIP_BODY);
String output = getOutput();
output = "<doc>" + output + "</doc>";
SAXReader reader = new SAXReader();
Document document = reader.read(new StringReader(output));
Element rootElement = document.getRootElement();
List children = rootElement.elements();
assertThat(children.size()).as("Incorrect number of children").isEqualTo(4);
Element element = (Element) rootElement.selectSingleNode("option[@value = 'UK']");
assertThat(element.attribute("selected").getValue()).as("UK node not selected").isEqualTo("selected");
assertThat(element.attribute("id").getValue()).isEqualTo("myOption3");
assertThat(element.attribute("class").getValue()).isEqualTo("myClass");
assertThat(element.attribute("onclick").getValue()).isEqualTo("CLICK");
}
@Test
void withCollectionAndDynamicAttributes() throws Exception {
String dynamicAttribute1 = "attr1";
String dynamicAttribute2 = "attr2";
getPageContext().setAttribute(
SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, new BindStatus(getRequestContext(), "testBean.country", false));
this.tag.setItems(Country.getCountries());
this.tag.setItemValue("isoCode");
this.tag.setItemLabel("name");
this.tag.setId("myOption");
this.tag.setCssClass("myClass");
this.tag.setOnclick("CLICK");
this.tag.setDynamicAttribute(null, dynamicAttribute1, dynamicAttribute1);
this.tag.setDynamicAttribute(null, dynamicAttribute2, dynamicAttribute2);
int result = this.tag.doStartTag();
assertThat(result).isEqualTo(Tag.SKIP_BODY);
String output = getOutput();
output = "<doc>" + output + "</doc>";
SAXReader reader = new SAXReader();
Document document = reader.read(new StringReader(output));
Element rootElement = document.getRootElement();
List children = rootElement.elements();
assertThat(children.size()).as("Incorrect number of children").isEqualTo(4);
Element element = (Element) rootElement.selectSingleNode("option[@value = 'UK']");
assertThat(element.attribute("selected").getValue()).as("UK node not selected").isEqualTo("selected");
assertThat(element.attribute("id").getValue()).isEqualTo("myOption3");
assertThat(element.attribute("class").getValue()).isEqualTo("myClass");
assertThat(element.attribute("onclick").getValue()).isEqualTo("CLICK");
assertThat(element.attribute(dynamicAttribute1).getValue()).isEqualTo(dynamicAttribute1);
assertThat(element.attribute(dynamicAttribute2).getValue()).isEqualTo(dynamicAttribute2);
}
@Test
void withCollectionAndCustomEditor() throws Exception {
PropertyEditor propertyEditor = new SimpleFloatEditor();
TestBean target = new TestBean();
target.setMyFloat(Float.valueOf("12.34"));
BeanPropertyBindingResult errors = new BeanPropertyBindingResult(target, COMMAND_NAME);
errors.getPropertyAccessor().registerCustomEditor(Float.class, propertyEditor);
exposeBindingResult(errors);
getPageContext().setAttribute(
SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, new BindStatus(getRequestContext(), "testBean.myFloat", false));
List<Float> floats = new ArrayList<>();
floats.add(Float.valueOf("12.30"));
floats.add(Float.valueOf("12.31"));
floats.add(Float.valueOf("12.32"));
floats.add(Float.valueOf("12.33"));
floats.add(Float.valueOf("12.34"));
floats.add(Float.valueOf("12.35"));
this.tag.setItems(floats);
int result = this.tag.doStartTag();
assertThat(result).isEqualTo(Tag.SKIP_BODY);
String output = getOutput();
output = "<doc>" + output + "</doc>";
SAXReader reader = new SAXReader();
Document document = reader.read(new StringReader(output));
Element rootElement = document.getRootElement();
List children = rootElement.elements();
assertThat(children.size()).as("Incorrect number of children").isEqualTo(6);
Element element = (Element) rootElement.selectSingleNode("option[text() = '12.34f']");
assertThat(element).as("Option node should not be null").isNotNull();
assertThat(element.attribute("selected").getValue()).as("12.34 node not selected").isEqualTo("selected");
assertThat(element.attribute("id")).as("No id rendered").isNull();
element = (Element) rootElement.selectSingleNode("option[text() = '12.35f']");
assertThat(element).as("Option node should not be null").isNotNull();
assertThat(element.attribute("selected")).as("12.35 node incorrectly selected").isNull();
assertThat(element.attribute("id")).as("No id rendered").isNull();
}
@Test
void withItemsNullReference() throws Exception {
getPageContext().setAttribute(
SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, new BindStatus(getRequestContext(), "testBean.country", false));
this.tag.setItems(Collections.emptyList());
this.tag.setItemValue("isoCode");
this.tag.setItemLabel("name");
int result = this.tag.doStartTag();
assertThat(result).isEqualTo(Tag.SKIP_BODY);
String output = getOutput();
output = "<doc>" + output + "</doc>";
SAXReader reader = new SAXReader();
Document document = reader.read(new StringReader(output));
Element rootElement = document.getRootElement();
List children = rootElement.elements();
assertThat(children.size()).as("Incorrect number of children").isEqualTo(0);
}
@Test
void withoutItems() throws Exception {
this.tag.setItemValue("isoCode");
this.tag.setItemLabel("name");
this.selectTag.setPath("testBean");
this.selectTag.doStartTag();
int result = this.tag.doStartTag();
assertThat(result).isEqualTo(Tag.SKIP_BODY);
this.tag.doEndTag();
this.selectTag.doEndTag();
String output = getOutput();
SAXReader reader = new SAXReader();
Document document = reader.read(new StringReader(output));
Element rootElement = document.getRootElement();
List children = rootElement.elements();
assertThat(children.size()).as("Incorrect number of children").isEqualTo(0);
}
@Test
void withoutItemsEnumParent() throws Exception {
BeanWithEnum testBean = new BeanWithEnum();
testBean.setTestEnum(TestEnum.VALUE_2);
getPageContext().getRequest().setAttribute("testBean", testBean);
this.selectTag.setPath("testBean.testEnum");
this.selectTag.doStartTag();
int result = this.tag.doStartTag();
assertThat(result).isEqualTo(BodyTag.SKIP_BODY);
result = this.tag.doEndTag();
assertThat(result).isEqualTo(Tag.EVAL_PAGE);
this.selectTag.doEndTag();
String output = getWriter().toString();
SAXReader reader = new SAXReader();
Document document = reader.read(new StringReader(output));
Element rootElement = document.getRootElement();
assertThat(rootElement.elements().size()).isEqualTo(2);
Node value1 = rootElement.selectSingleNode("option[@value = 'VALUE_1']");
Node value2 = rootElement.selectSingleNode("option[@value = 'VALUE_2']");
assertThat(value1.getText()).isEqualTo("TestEnum: VALUE_1");
assertThat(value2.getText()).isEqualTo("TestEnum: VALUE_2");
assertThat(rootElement.selectSingleNode("option[@selected]")).isEqualTo(value2);
}
@Test
void withoutItemsEnumParentWithExplicitLabelsAndValues() throws Exception {
BeanWithEnum testBean = new BeanWithEnum();
testBean.setTestEnum(TestEnum.VALUE_2);
getPageContext().getRequest().setAttribute("testBean", testBean);
this.selectTag.setPath("testBean.testEnum");
this.tag.setItemLabel("enumLabel");
this.tag.setItemValue("enumValue");
this.selectTag.doStartTag();
int result = this.tag.doStartTag();
assertThat(result).isEqualTo(BodyTag.SKIP_BODY);
result = this.tag.doEndTag();
assertThat(result).isEqualTo(Tag.EVAL_PAGE);
this.selectTag.doEndTag();
String output = getWriter().toString();
SAXReader reader = new SAXReader();
Document document = reader.read(new StringReader(output));
Element rootElement = document.getRootElement();
assertThat(rootElement.elements().size()).isEqualTo(2);
Node value1 = rootElement.selectSingleNode("option[@value = 'Value: VALUE_1']");
Node value2 = rootElement.selectSingleNode("option[@value = 'Value: VALUE_2']");
assertThat(value1.getText()).isEqualTo("Label: VALUE_1");
assertThat(value2.getText()).isEqualTo("Label: VALUE_2");
assertThat(rootElement.selectSingleNode("option[@selected]")).isEqualTo(value2);
}
@Override
protected void extendRequest(MockHttpServletRequest request) {
TestBean bean = new TestBean();
bean.setName("foo");
bean.setCountry("UK");
bean.setMyFloat(Float.valueOf("12.34"));
request.setAttribute(COMMAND_NAME, bean);
List floats = new ArrayList();
floats.add(Float.valueOf("12.30"));
floats.add(Float.valueOf("12.31"));
floats.add(Float.valueOf("12.32"));
floats.add(Float.valueOf("12.33"));
floats.add(Float.valueOf("12.34"));
floats.add(Float.valueOf("12.35"));
request.setAttribute("floats", floats);
}
@Override
protected void exposeBindingResult(Errors errors) {
// wrap errors in a Model
Map model = new HashMap();
model.put(BindingResult.MODEL_KEY_PREFIX + COMMAND_NAME, errors);
// replace the request context with one containing the errors
MockPageContext pageContext = getPageContext();
RequestContext context = new RequestContext((HttpServletRequest) pageContext.getRequest(), model);
pageContext.setAttribute(RequestContextAwareTag.REQUEST_CONTEXT_PAGE_ATTRIBUTE, context);
}
}
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