/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 javax.el;
import java.beans.FeatureDescriptor;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.junit.Assert;
import org.junit.Test;
import org.apache.jasper.el.ELContextImpl;
public class TestMapELResolver {
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testGetType01() {
MapELResolver mapELResolver = new MapELResolver();
mapELResolver.getType(null, new Object(), new Object());
}
/**
* Tests that a valid property is not resolved if base is not Map.
*/
@Test
public void testGetType02() {
doNegativeTest(new Object(), new Object(), MethodUnderTest.GET_TYPE,
true);
}
/**
* Tests that a valid property is resolved.
*/
@Test
public void testGetType03() {
MapELResolver mapELResolver = new MapELResolver();
ELContext context = new ELContextImpl();
Class<?> result = mapELResolver.getType(context,
new HashMap<Object, Object>(), "test");
Assert.assertEquals(Object.class, result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testGetValue01() {
MapELResolver mapELResolver = new MapELResolver();
mapELResolver.getValue(null, new Object(), new Object());
}
/**
* Tests that a valid property is not resolved if base is not Map.
*/
@Test
public void testGetValue02() {
doNegativeTest(new Object(), new Object(), MethodUnderTest.GET_VALUE,
true);
}
/**
* Tests that a valid property is resolved.
*/
@Test
public void testGetValue03() {
MapELResolver mapELResolver = new MapELResolver();
ELContext context = new ELContextImpl();
Map<String, String> map = new HashMap<String, String>();
map.put("key", "value");
Object result = mapELResolver.getValue(context, map, "key");
Assert.assertEquals("value", result);
Assert.assertTrue(context.isPropertyResolved());
result = mapELResolver.getValue(context, map, "unknown-key");
Assert.assertNull(result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testSetValue01() {
MapELResolver mapELResolver = new MapELResolver();
mapELResolver.setValue(null, new Object(), new Object(), new Object());
}
/**
* Tests that a valid property is not set if base is not Map.
*/
@Test
public void testSetValue02() {
doNegativeTest(new Object(), new Object(), MethodUnderTest.SET_VALUE,
false);
}
/**
* Tests that an exception is thrown when readOnly is true.
*/
@Test(expected = PropertyNotWritableException.class)
public void testSetValue03() {
MapELResolver mapELResolver = new MapELResolver(true);
ELContext context = new ELContextImpl();
mapELResolver.setValue(context, new HashMap<Object, Object>(),
new Object(), new Object());
}
/**
* Tests that a valid property is set.
*/
@Test
public void testSetValue04() {
MapELResolver mapELResolver = new MapELResolver();
ELContext context = new ELContextImpl();
Map<String, String> map = new HashMap<String, String>();
mapELResolver.setValue(context, map, "key", "value");
Assert.assertEquals("value",
mapELResolver.getValue(context, map, "key"));
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that an exception is thrown when the map is not modifiable.
*/
@Test(expected = PropertyNotWritableException.class)
public void testSetValue05() {
MapELResolver mapELResolver = new MapELResolver();
ELContext context = new ELContextImpl();
Map<Object, Object> map = Collections
.unmodifiableMap(new HashMap<Object, Object>());
mapELResolver.setValue(context, map, "key", "value");
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testIsReadOnly01() {
MapELResolver mapELResolver = new MapELResolver();
mapELResolver.isReadOnly(null, new Object(), new Object());
}
/**
* Tests that the propertyResolved is false if base is not Map.
*/
@Test
public void testIsReadOnly02() {
MapELResolver mapELResolver = new MapELResolver();
ELContext context = new ELContextImpl();
boolean result = mapELResolver.isReadOnly(context, new Object(),
new Object());
Assert.assertFalse(result);
Assert.assertFalse(context.isPropertyResolved());
mapELResolver = new MapELResolver(true);
result = mapELResolver.isReadOnly(context, new Object(), new Object());
Assert.assertTrue(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Tests that if the MapELResolver is constructed with readOnly the method
* will return always true, otherwise false.
*/
@Test
public void testIsReadOnly03() {
MapELResolver mapELResolver = new MapELResolver();
ELContext context = new ELContextImpl();
boolean result = mapELResolver.isReadOnly(context,
new HashMap<Object, Object>(), new Object());
Assert.assertFalse(result);
Assert.assertTrue(context.isPropertyResolved());
mapELResolver = new MapELResolver(true);
result = mapELResolver.isReadOnly(context,
new HashMap<Object, Object>(), new Object());
Assert.assertTrue(result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that the readOnly is true always when the map is not modifiable.
*/
@Test
public void testIsReadOnly04() {
MapELResolver mapELResolver = new MapELResolver();
ELContext context = new ELContextImpl();
Map<Object, Object> map = Collections
.unmodifiableMap(new HashMap<Object, Object>());
boolean result = mapELResolver.isReadOnly(context, map, new Object());
Assert.assertTrue(result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a valid FeatureDescriptors are not returned if base is not
* Map.
*/
@Test
public void testGetFeatureDescriptors01() {
MapELResolver mapELResolver = new MapELResolver();
ELContext context = new ELContextImpl();
Iterator<FeatureDescriptor> result = mapELResolver
.getFeatureDescriptors(context, new Object());
Assert.assertNull(result);
}
/**
* Tests that a valid FeatureDescriptors are returned.
*/
@Test
public void testGetFeatureDescriptors02() {
MapELResolver mapELResolver = new MapELResolver();
ELContext context = new ELContextImpl();
Map<String, String> map = new HashMap<String, String>();
map.put("key", "value");
Iterator<FeatureDescriptor> result = mapELResolver
.getFeatureDescriptors(context, map);
while (result.hasNext()) {
FeatureDescriptor featureDescriptor = result.next();
Assert.assertEquals("key", featureDescriptor.getDisplayName());
Assert.assertEquals("key", featureDescriptor.getName());
Assert.assertEquals("", featureDescriptor.getShortDescription());
Assert.assertFalse(featureDescriptor.isExpert());
Assert.assertFalse(featureDescriptor.isHidden());
Assert.assertTrue(featureDescriptor.isPreferred());
Assert.assertEquals("key".getClass(),
featureDescriptor.getValue(ELResolver.TYPE));
Assert.assertEquals(Boolean.TRUE, featureDescriptor
.getValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME));
}
}
private void doNegativeTest(Object base, Object trigger,
MethodUnderTest method, boolean checkResult) {
MapELResolver resolver = new MapELResolver();
ELContext context = new ELContextImpl();
Object result = null;
switch (method) {
case GET_VALUE: {
result = resolver.getValue(context, base, trigger);
break;
}
case SET_VALUE: {
resolver.setValue(context, base, trigger, new Object());
break;
}
case GET_TYPE: {
result = resolver.getType(context, base, trigger);
break;
}
default: {
// Should never happen
Assert.fail("Missing case for method");
}
}
if (checkResult) {
Assert.assertNull(result);
}
Assert.assertFalse(context.isPropertyResolved());
}
private static enum MethodUnderTest {
GET_VALUE, SET_VALUE, GET_TYPE
}
}