268 lines
9.0 KiB
Java
268 lines
9.0 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.el;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import javax.el.ELContext;
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import javax.el.ExpressionFactory;
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import javax.el.ValueExpression;
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import javax.el.ValueReference;
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import org.junit.Assert;
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import org.junit.Test;
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import org.apache.jasper.el.ELContextImpl;
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public class TestValueExpressionImpl {
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@Test
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public void testGetValueReference() {
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ExpressionFactory factory = ExpressionFactory.newInstance();
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ELContext context = new ELContextImpl(factory);
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TesterBeanB beanB = new TesterBeanB();
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beanB.setName("Tomcat");
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ValueExpression var =
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factory.createValueExpression(beanB, TesterBeanB.class);
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context.getVariableMapper().setVariable("beanB", var);
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ValueExpression ve = factory.createValueExpression(
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context, "${beanB.name}", String.class);
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// First check the basics work
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String result = (String) ve.getValue(context);
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Assert.assertEquals("Tomcat", result);
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// Now check the value reference
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ValueReference vr = ve.getValueReference(context);
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Assert.assertNotNull(vr);
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Assert.assertEquals(beanB, vr.getBase());
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Assert.assertEquals("name", vr.getProperty());
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}
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@Test
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public void testGetValueReferenceVariable() {
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ExpressionFactory factory = ExpressionFactory.newInstance();
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ELContext context = new ELContextImpl(factory);
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TesterBeanB beanB = new TesterBeanB();
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beanB.setName("Tomcat");
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ValueExpression var =
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factory.createValueExpression(beanB, TesterBeanB.class);
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context.getVariableMapper().setVariable("beanB", var);
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ValueExpression var2 = factory.createValueExpression(
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context, "${beanB.name}", String.class);
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context.getVariableMapper().setVariable("foo", var2);
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ValueExpression ve = factory.createValueExpression(
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context, "${foo}", ValueExpression.class);
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// Now check the value reference
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ValueReference vr = ve.getValueReference(context);
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Assert.assertNotNull(vr);
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Assert.assertEquals(beanB, vr.getBase());
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Assert.assertEquals("name", vr.getProperty());
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}
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@Test
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public void testBug49345() {
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ExpressionFactory factory = ExpressionFactory.newInstance();
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ELContext context = new ELContextImpl(factory);
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TesterBeanA beanA = new TesterBeanA();
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TesterBeanB beanB = new TesterBeanB();
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beanB.setName("Tomcat");
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beanA.setBean(beanB);
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ValueExpression var =
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factory.createValueExpression(beanA, TesterBeanA.class);
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context.getVariableMapper().setVariable("beanA", var);
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ValueExpression ve = factory.createValueExpression(
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context, "${beanA.bean.name}", String.class);
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// First check the basics work
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String result = (String) ve.getValue(context);
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Assert.assertEquals("Tomcat", result);
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// Now check the value reference
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ValueReference vr = ve.getValueReference(context);
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Assert.assertNotNull(vr);
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Assert.assertEquals(beanB, vr.getBase());
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Assert.assertEquals("name", vr.getProperty());
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}
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@Test
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public void testBug50105() {
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ExpressionFactory factory = ExpressionFactory.newInstance();
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ELContext context = new ELContextImpl(factory);
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TesterEnum testEnum = TesterEnum.APPLE;
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ValueExpression var =
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factory.createValueExpression(testEnum, TesterEnum.class);
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context.getVariableMapper().setVariable("testEnum", var);
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// When coercing an Enum to a String, name() should always be used.
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ValueExpression ve1 = factory.createValueExpression(
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context, "${testEnum}", String.class);
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String result1 = (String) ve1.getValue(context);
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Assert.assertEquals("APPLE", result1);
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ValueExpression ve2 = factory.createValueExpression(
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context, "foo${testEnum}bar", String.class);
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String result2 = (String) ve2.getValue(context);
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Assert.assertEquals("fooAPPLEbar", result2);
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}
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@Test
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public void testBug51177ObjectMap() {
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ExpressionFactory factory = ExpressionFactory.newInstance();
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ELContext context = new ELContextImpl(factory);
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Object o1 = "String value";
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Object o2 = Integer.valueOf(32);
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Map<Object,Object> map = new HashMap<>();
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map.put("key1", o1);
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map.put("key2", o2);
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ValueExpression var =
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factory.createValueExpression(map, Map.class);
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context.getVariableMapper().setVariable("map", var);
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ValueExpression ve1 = factory.createValueExpression(
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context, "${map.key1}", Object.class);
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ve1.setValue(context, o2);
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Assert.assertEquals(o2, ve1.getValue(context));
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ValueExpression ve2 = factory.createValueExpression(
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context, "${map.key2}", Object.class);
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ve2.setValue(context, o1);
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Assert.assertEquals(o1, ve2.getValue(context));
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}
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@Test
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public void testBug51177ObjectList() {
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ExpressionFactory factory = ExpressionFactory.newInstance();
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ELContext context = new ELContextImpl(factory);
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Object o1 = "String value";
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Object o2 = Integer.valueOf(32);
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List<Object> list = new ArrayList<>();
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list.add(0, o1);
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list.add(1, o2);
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ValueExpression var =
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factory.createValueExpression(list, List.class);
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context.getVariableMapper().setVariable("list", var);
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ValueExpression ve1 = factory.createValueExpression(
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context, "${list[0]}", Object.class);
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ve1.setValue(context, o2);
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Assert.assertEquals(o2, ve1.getValue(context));
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ValueExpression ve2 = factory.createValueExpression(
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context, "${list[1]}", Object.class);
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ve2.setValue(context, o1);
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Assert.assertEquals(o1, ve2.getValue(context));
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}
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/*
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* Test returning an empty list as a bean property.
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*/
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@Test
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public void testBug51544Bean() throws Exception {
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ExpressionFactory factory = ExpressionFactory.newInstance();
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ELContext context = new ELContextImpl(factory);
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TesterBeanA beanA = new TesterBeanA();
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beanA.setValList(Collections.emptyList());
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ValueExpression var =
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factory.createValueExpression(beanA, TesterBeanA.class);
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context.getVariableMapper().setVariable("beanA", var);
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ValueExpression ve = factory.createValueExpression(
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context, "${beanA.valList.size()}", Integer.class);
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Integer result = (Integer) ve.getValue(context);
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Assert.assertEquals(Integer.valueOf(0), result);
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}
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/*
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* Test using list directly as variable.
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*/
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@Test
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public void testBug51544Direct() throws Exception {
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ExpressionFactory factory = ExpressionFactory.newInstance();
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ELContext context = new ELContextImpl(factory);
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List<?> list = Collections.emptyList();
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ValueExpression var =
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factory.createValueExpression(list, List.class);
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context.getVariableMapper().setVariable("list", var);
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ValueExpression ve = factory.createValueExpression(
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context, "${list.size()}", Integer.class);
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Integer result = (Integer) ve.getValue(context);
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Assert.assertEquals(Integer.valueOf(0), result);
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}
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@Test
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public void testBug56522SetNullValue() {
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ExpressionFactory factory = ExpressionFactory.newInstance();
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ELContext context = new ELContextImpl(factory);
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TesterBeanB beanB = new TesterBeanB();
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beanB.setName("Tomcat");
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ValueExpression var =
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factory.createValueExpression(beanB, TesterBeanB.class);
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context.getVariableMapper().setVariable("beanB", var);
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ValueExpression ve = factory.createValueExpression(
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context, "${beanB.name}", String.class);
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// First check the basics work
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String result = (String) ve.getValue(context);
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Assert.assertEquals("Tomcat", result);
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// Now set the value to null
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ve.setValue(context, null);
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Assert.assertEquals("", beanB.getName());
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}
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}
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