/*
* 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.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.junit.Assert;
import org.junit.Test;
import org.apache.jasper.el.ELContextImpl;
public class TestListELResolver {
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testGetValue01() {
ListELResolver resolver = new ListELResolver();
resolver.getValue(null, new Object(), new Object());
}
/**
* Tests that a valid property is not resolved if base is not List.
*/
@Test
public void testGetValue02() {
doNegativeTest(new Object(), new Object(), MethodUnderTest.GET_VALUE,
true);
}
/**
* Tests that a valid property is resolved.
*/
@Test
public void testGetValue03() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<String> list = new ArrayList<String>();
list.add("key");
Object result = resolver.getValue(context, list, new Integer(0));
Assert.assertEquals("key", result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests a coercion cannot be performed as the key is not integer.
*/
@Test(expected = IllegalArgumentException.class)
public void testGetValue04() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<String> list = new ArrayList<String>();
list.add("key");
resolver.getValue(context, list, "key");
}
/**
* Tests that the key is out of bounds and null will be returned.
*/
@Test
public void testGetValue05() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<String> list = new ArrayList<String>();
list.add("key");
Object result = resolver.getValue(context, list, new Integer(1));
Assert.assertNull(result);
Assert.assertTrue(context.isPropertyResolved());
result = resolver.getValue(context, list, new Integer(-1));
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 testGetType01() {
ListELResolver resolver = new ListELResolver();
resolver.getType(null, new Object(), new Object());
}
/**
* Tests that a valid property is not resolved if base is not List.
*/
@Test
public void testGetType02() {
doNegativeTest(new Object(), new Object(), MethodUnderTest.GET_TYPE,
true);
}
/**
* Tests that a valid property is resolved.
*/
@Test
public void testGetType03() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<String> list = new ArrayList<String>();
list.add("key");
Class<?> result = resolver.getType(context, list, new Integer(0));
Assert.assertEquals(Object.class, result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that the key is out of bounds and exception will be thrown.
*/
@Test(expected = PropertyNotFoundException.class)
public void testGetType04() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<String> list = new ArrayList<String>();
list.add("key");
resolver.getType(context, list, new Integer(1));
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testSetValue01() {
ListELResolver resolver = new ListELResolver();
resolver.setValue(null, new Object(), new Object(), new Object());
}
/**
* Tests that a valid property is not set if base is not List.
*/
@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() {
ListELResolver resolver = new ListELResolver(true);
ELContext context = new ELContextImpl();
resolver.setValue(context, new ArrayList<Object>(), new Object(),
new Object());
}
/**
* Tests that a valid property is set.
*/
@Test
public void testSetValue04() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<String> list = new ArrayList<String>();
list.add("value");
resolver.setValue(context, list, new Integer(0), "value");
Assert.assertEquals("value",
resolver.getValue(context, list, new Integer(0)));
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that an exception is thrown when the list is not modifiable.
*/
@Test(expected = PropertyNotWritableException.class)
public void testSetValue05() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<Object> list = Collections
.unmodifiableList(new ArrayList<Object>());
resolver.setValue(context, list, new Integer(0), "value");
}
/**
* Tests a coercion cannot be performed as the key is not integer.
*/
@Test(expected = IllegalArgumentException.class)
public void testSetValue06() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<String> list = new ArrayList<String>();
list.add("key");
resolver.setValue(context, list, "key", "value");
}
/**
* Tests that the key is out of bounds and exception will be thrown.
*/
@Test(expected = PropertyNotFoundException.class)
public void testSetValue07() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<String> list = new ArrayList<String>();
list.add("key");
resolver.setValue(context, list, new Integer(1), "value");
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testIsReadOnly01() {
ListELResolver resolver = new ListELResolver();
resolver.isReadOnly(null, new Object(), new Object());
}
/**
* Tests that the propertyResolved is false if base is not List.
*/
@Test
public void testIsReadOnly02() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
boolean result = resolver.isReadOnly(context, new Object(),
new Object());
Assert.assertFalse(result);
Assert.assertFalse(context.isPropertyResolved());
resolver = new ListELResolver(true);
result = resolver.isReadOnly(context, new Object(), new Object());
Assert.assertTrue(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Tests that if the ListELResolver is constructed with readOnly the method
* will return always true, otherwise false.
*/
@Test
public void testIsReadOnly03() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<String> list = new ArrayList<String>();
list.add("key");
boolean result = resolver.isReadOnly(context, list, new Integer(0));
Assert.assertFalse(result);
Assert.assertTrue(context.isPropertyResolved());
resolver = new ListELResolver(true);
result = resolver.isReadOnly(context, list, new Integer(0));
Assert.assertTrue(result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that the readOnly is true always when the map is not modifiable.
*/
@Test
public void testIsReadOnly04() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<String> list = new ArrayList<String>();
list.add("key");
List<String> unmodifiableList = Collections.unmodifiableList(list);
boolean result = resolver.isReadOnly(context, unmodifiableList,
new Integer(0));
Assert.assertTrue(result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that the key is out of bounds and exception will be thrown.
*/
@Test(expected = PropertyNotFoundException.class)
public void testIsReadOnly05() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<String> list = new ArrayList<String>();
list.add("key");
resolver.isReadOnly(context, list, new Integer(1));
}
/**
* Tests that a result is returned even when a coercion cannot be performed.
*/
@Test
public void testIsReadOnly06() {
ListELResolver resolver = new ListELResolver();
ELContext context = new ELContextImpl();
List<String> list = new ArrayList<String>();
list.add("key");
boolean result = resolver.isReadOnly(context, list, "key");
Assert.assertFalse(result);
Assert.assertTrue(context.isPropertyResolved());
resolver = new ListELResolver(true);
result = resolver.isReadOnly(context, list, "key");
Assert.assertTrue(result);
Assert.assertTrue(context.isPropertyResolved());
}
private void doNegativeTest(Object base, Object trigger,
MethodUnderTest method, boolean checkResult) {
ListELResolver resolver = new ListELResolver();
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
}
}