optiontagtests.java

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/*
 * 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.web.servlet.tags.form;

import org.springframework.beans.Colour;
import org.springframework.beans.TestBean;
import org.springframework.beans.propertyeditors.StringArrayPropertyEditor;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.test.AssertThrows;
import org.springframework.util.StringUtils;
import org.springframework.validation.BeanPropertyBindingResult;
import org.springframework.web.servlet.support.BindStatus;

import javax.servlet.jsp.tagext.BodyTag;
import javax.servlet.jsp.tagext.Tag;
import java.beans.PropertyEditor;
import java.beans.PropertyEditorSupport;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

/**
 * Unit tests for the {@link OptionTag} class.
 *
 * @author Rob Harrop
 * @author Rick Evans
 */
public final class OptionTagTests extends AbstractHtmlElementTagTests {

	private static final String ARRAY_SOURCE = "abc,123,def";

	private static final String[] ARRAY = StringUtils.commaDelimitedListToStringArray(ARRAY_SOURCE);


	private OptionTag tag;


	protected void onSetUp() {
		this.tag = new OptionTag() {
			protected TagWriter createTagWriter() {
				return new TagWriter(getWriter());
			}
		};
		this.tag.setParent(new SelectTag());
		this.tag.setPageContext(getPageContext());
	}


	public void testCanBeDisabledEvenWhenSelected() throws Exception {
		getPageContext().setAttribute(SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, new BindStatus(getRequestContext(), "testBean.name", false));
		this.tag.setValue("bar");
		this.tag.setLabel("Bar");
		this.tag.setDisabled("true");
		int result = this.tag.doStartTag();
		assertEquals(BodyTag.EVAL_BODY_BUFFERED, result);
		result = this.tag.doEndTag();
		assertEquals(Tag.EVAL_PAGE, result);

		String output = getWriter().toString();

		assertOptionTagOpened(output);
		assertOptionTagClosed(output);
		assertContainsAttribute(output, "value", "bar");
		assertContainsAttribute(output, "disabled", "disabled");
		assertBlockTagContains(output, "Bar");
	}

	public void testRenderNotSelected() throws Exception {
		getPageContext().setAttribute(SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, new BindStatus(getRequestContext(), "testBean.name", false));
		this.tag.setValue("bar");
		this.tag.setLabel("Bar");
		int result = this.tag.doStartTag();
		assertEquals(BodyTag.EVAL_BODY_BUFFERED, result);
		result = this.tag.doEndTag();
		assertEquals(Tag.EVAL_PAGE, result);

		String output = getWriter().toString();

		assertOptionTagOpened(output);
		assertOptionTagClosed(output);
		assertContainsAttribute(output, "value", "bar");
		assertBlockTagContains(output, "Bar");
	}

	public void testRenderSelected() throws Exception {
		getPageContext().setAttribute(SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, new BindStatus(getRequestContext(), "testBean.name", false));
		this.tag.setValue("foo");
		this.tag.setLabel("Foo");
		int result = this.tag.doStartTag();
		assertEquals(BodyTag.EVAL_BODY_BUFFERED, result);
		result = this.tag.doEndTag();
		assertEquals(Tag.EVAL_PAGE, result);

		String output = getWriter().toString();

		assertOptionTagOpened(output);
		assertOptionTagClosed(output);
		assertContainsAttribute(output, "value", "foo");
		assertContainsAttribute(output, "selected", "selected");
		assertBlockTagContains(output, "Foo");
	}

	public void testWithNoLabel() throws Exception {
		getPageContext().setAttribute(SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, new BindStatus(getRequestContext(), "testBean.name", false));
		this.tag.setValue("bar");
		int result = this.tag.doStartTag();
		assertEquals(BodyTag.EVAL_BODY_BUFFERED, result);
		result = this.tag.doEndTag();
		assertEquals(Tag.EVAL_PAGE, result);

		String output = getWriter().toString();

		assertOptionTagOpened(output);
		assertOptionTagClosed(output);
		assertContainsAttribute(output, "value", "bar");
		assertBlockTagContains(output, "bar");
	}

	public void testWithoutContext() throws Exception {
		this.tag.setParent(null);
		this.tag.setValue("foo");
		this.tag.setLabel("Foo");
		new AssertThrows(IllegalStateException.class,
				"Must not be able to use <option> tag without exposed context.") {
			public void test() throws Exception {
				tag.doStartTag();
			}
		}.runTest();
	}

	public void testWithEnum() throws Exception {
		getPageContext().setAttribute(SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, new BindStatus(getRequestContext(), "testBean.favouriteColour", false));

		String value = Colour.GREEN.getCode().toString();
		String label = Colour.GREEN.getLabel();

		this.tag.setValue(value);
		this.tag.setLabel(label);

		int result = this.tag.doStartTag();
		assertEquals(BodyTag.EVAL_BODY_BUFFERED, result);
		result = this.tag.doEndTag();
		assertEquals(Tag.EVAL_PAGE, result);

		String output = getWriter().toString();

		assertOptionTagOpened(output);
		assertOptionTagClosed(output);
		assertContainsAttribute(output, "value", value);
		assertContainsAttribute(output, "selected", "selected");
		assertBlockTagContains(output, label);
	}

	public void testWithEnumNotSelected() throws Exception {
		getPageContext().setAttribute(SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, new BindStatus(getRequestContext(), "testBean.favouriteColour", false));

		String value = Colour.BLUE.getCode().toString();
		String label = Colour.BLUE.getLabel();

		this.tag.setValue(value);
		this.tag.setLabel(label);

		int result = this.tag.doStartTag();
		assertEquals(BodyTag.EVAL_BODY_BUFFERED, result);
		result = this.tag.doEndTag();
		assertEquals(Tag.EVAL_PAGE, result);

		String output = getWriter().toString();

		assertOptionTagOpened(output);
		assertOptionTagClosed(output);
		assertContainsAttribute(output, "value", value);
		assertAttributeNotPresent(output, "selected");
		assertBlockTagContains(output, label);
	}

	public void testWithPropertyEditor() throws Exception {
		BindStatus bindStatus = new BindStatus(getRequestContext(), "testBean.stringArray", false) {
			public PropertyEditor getEditor() {
				return new StringArrayPropertyEditor();
			}
		};
		getPageContext().setAttribute(SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, bindStatus);

		this.tag.setValue(ARRAY_SOURCE);
		this.tag.setLabel("someArray");

		int result = this.tag.doStartTag();
		assertEquals(BodyTag.EVAL_BODY_BUFFERED, result);
		result = this.tag.doEndTag();
		assertEquals(Tag.EVAL_PAGE, result);

		String output = getWriter().toString();

		assertOptionTagOpened(output);
		assertOptionTagClosed(output);
		assertContainsAttribute(output, "value", ARRAY_SOURCE);
		assertContainsAttribute(output, "selected", "selected");
		assertBlockTagContains(output, "someArray");

	}

	public void testWithPropertyEditorStringComparison() throws Exception {
		final PropertyEditor testBeanEditor = new TestBeanPropertyEditor();
		testBeanEditor.setValue(new TestBean("Sally"));
		BindStatus bindStatus = new BindStatus(getRequestContext(), "testBean.spouse", false) {
			public PropertyEditor getEditor() {
				return testBeanEditor;
			}
		};
		getPageContext().setAttribute(SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, bindStatus);

		this.tag.setValue("Sally");

		int result = this.tag.doStartTag();
		assertEquals(BodyTag.EVAL_BODY_BUFFERED, result);
		result = this.tag.doEndTag();
		assertEquals(Tag.EVAL_PAGE, result);

		String output = getWriter().toString();
		assertOptionTagOpened(output);
		assertOptionTagClosed(output);
		assertContainsAttribute(output, "value", "Sally");
		assertContainsAttribute(output, "selected", "selected");
		assertBlockTagContains(output, "Sally");
	}

	public void testWithCustomObjectSelected() throws Exception {
		getPageContext().setAttribute(SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, new BindStatus(getRequestContext(), "testBean.someNumber", false));
		this.tag.setValue("${myNumber}");
		this.tag.setLabel("GBP ${myNumber}");
		int result = this.tag.doStartTag();
		assertEquals(BodyTag.EVAL_BODY_BUFFERED, result);
		result = this.tag.doEndTag();
		assertEquals(Tag.EVAL_PAGE, result);

		String output = getWriter().toString();

		assertOptionTagOpened(output);
		assertOptionTagClosed(output);
		assertContainsAttribute(output, "value", "12.34");
		assertContainsAttribute(output, "selected", "selected");
		assertBlockTagContains(output, "GBP 12.34");
	}

	public void testWithCustomObjectNotSelected() throws Exception {
		getPageContext().setAttribute(SelectTag.LIST_VALUE_PAGE_ATTRIBUTE, new BindStatus(getRequestContext(), "testBean.someNumber", false));
		this.tag.setValue("${myOtherNumber}");
		this.tag.setLabel("GBP ${myOtherNumber}");
		int result = this.tag.doStartTag();
		assertEquals(BodyTag.EVAL_BODY_BUFFERED, result);
		result = this.tag.doEndTag();
		assertEquals(Tag.EVAL_PAGE, result);

		String output = getWriter().toString();

		assertOptionTagOpened(output);
		assertOptionTagClosed(output);
		assertContainsAttribute(output, "value", "12.35");
		assertAttributeNotPresent(output, "selected");
		assertBlockTagContains(output, "GBP 12.35");
	}

	public void testWithCustomObjectAndEditorSelected() throws Exception {