/*
* 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 jakarta.el;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.junit.Assert;
import org.junit.Test;
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 StandardELContext(ELManager.getExpressionFactory());
Class<?> result = mapELResolver.getType(context, new HashMap<>(), "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 StandardELContext(ELManager.getExpressionFactory());
Map<String,String> map = new HashMap<>();
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 StandardELContext(ELManager.getExpressionFactory());
mapELResolver.setValue(context, new HashMap<>(), new Object(), new Object());
}
/**
* Tests that a valid property is set.
*/
@Test
public void testSetValue04() {
MapELResolver mapELResolver = new MapELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
Map<String,String> map = new HashMap<>();
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 StandardELContext(ELManager.getExpressionFactory());
Map<Object,Object> map = Collections.unmodifiableMap(new HashMap<>());
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 StandardELContext(ELManager.getExpressionFactory());
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 StandardELContext(ELManager.getExpressionFactory());
boolean result = mapELResolver.isReadOnly(context, new HashMap<>(), new Object());
Assert.assertFalse(result);
Assert.assertTrue(context.isPropertyResolved());
mapELResolver = new MapELResolver(true);
result = mapELResolver.isReadOnly(context, new HashMap<>(), 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 StandardELContext(ELManager.getExpressionFactory());
Map<Object,Object> map = Collections.unmodifiableMap(new HashMap<>());
boolean result = mapELResolver.isReadOnly(context, map, new Object());
Assert.assertTrue(result);
Assert.assertTrue(context.isPropertyResolved());
}
private void doNegativeTest(Object base, Object trigger, MethodUnderTest method, boolean checkResult) {
MapELResolver resolver = new MapELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
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 enum MethodUnderTest {
GET_VALUE,
SET_VALUE,
GET_TYPE
}
}