/*
* 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.Enumeration;
import java.util.Iterator;
import java.util.ListResourceBundle;
import java.util.ResourceBundle;
import org.junit.Assert;
import org.junit.Test;
import org.apache.jasper.el.ELContextImpl;
public class TestResourceBundleELResolver {
@Test
public void bug53001() {
ExpressionFactory factory = ExpressionFactory.newInstance();
ELContext context = new ELContextImpl();
ResourceBundle rb = new TesterResourceBundle();
ValueExpression var = factory.createValueExpression(rb,
ResourceBundle.class);
context.getVariableMapper().setVariable("rb", var);
ValueExpression ve = factory.createValueExpression(context,
"${rb.keys}", String.class);
MethodExpression me = factory.createMethodExpression(context,
"${rb.getKeys()}", Enumeration.class, null);
// Ensure we are specification compliant
String result1 = (String) ve.getValue(context);
Assert.assertEquals("???keys???", result1);
// Check that the method expression does return the keys
Object result2 = me.invoke(context, null);
Assert.assertTrue(result2 instanceof Enumeration);
@SuppressWarnings("unchecked")
Enumeration<String> e = (Enumeration<String>) result2;
Assert.assertTrue(e.hasMoreElements());
String element = e.nextElement();
if ("key1".equals(element)) {
Assert.assertEquals("key1", element);
Assert.assertTrue(e.hasMoreElements());
Assert.assertEquals("key2", e.nextElement());
Assert.assertFalse(e.hasMoreElements());
} else {
Assert.assertEquals("key2", element);
Assert.assertTrue(e.hasMoreElements());
Assert.assertEquals("key1", e.nextElement());
Assert.assertFalse(e.hasMoreElements());
}
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testGetValue01() {
ResourceBundleELResolver resolver = new ResourceBundleELResolver();
resolver.getValue(null, new Object(), new Object());
}
/**
* Tests that a valid property is not resolved if base is not
* ResourceBundle.
*/
@Test
public void testGetValue02() {
doNegativeTest(new Object(), new Object(), MethodUnderTest.GET_VALUE,
true);
}
/**
* Tests that a valid property is resolved.
*/
@Test
public void testGetValue03() {
ResourceBundleELResolver resolver = new ResourceBundleELResolver();
ELContext context = new ELContextImpl();
ResourceBundle resourceBundle = new TesterResourceBundle();
Object result = resolver.getValue(context, resourceBundle, "key1");
Assert.assertEquals("value1", result);
Assert.assertTrue(context.isPropertyResolved());
result = resolver.getValue(context, resourceBundle, "unknown-key");
Assert.assertEquals("???unknown-key???", result);
Assert.assertTrue(context.isPropertyResolved());
result = resolver.getValue(context, resourceBundle, null);
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() {
ResourceBundleELResolver resolver = new ResourceBundleELResolver();
resolver.getType(null, new Object(), new Object());
}
/**
* Tests that a valid property is not resolved if base is not
* ResourceBundle.
*/
@Test
public void testGetType02() {
doNegativeTest(new Object(), new Object(), MethodUnderTest.GET_TYPE,
true);
}
/**
* Tests that null will be returned when base is ResourceBundle. Checks that
* the propertyResolved is true.
*/
@Test
public void testGetType03() {
ResourceBundleELResolver resolver = new ResourceBundleELResolver();
ELContext context = new ELContextImpl();
ResourceBundle resourceBundle = new TesterResourceBundle();
Class<?> result = resolver.getType(context, resourceBundle, "key1");
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() {
ResourceBundleELResolver resolver = new ResourceBundleELResolver();
resolver.setValue(null, new Object(), new Object(), new Object());
}
/**
* Tests that a valid property is not set if base is not ResourceBundle.
*/
@Test
public void testSetValue02() {
doNegativeTest(new Object(), new Object(), MethodUnderTest.SET_VALUE,
false);
}
/**
* Tests that an exception is thrown because the resolver is read only.
*/
@Test(expected = PropertyNotWritableException.class)
public void testSetValue03() {
ResourceBundleELResolver resolver = new ResourceBundleELResolver();
ELContext context = new ELContextImpl();
ResourceBundle resourceBundle = new TesterResourceBundle();
resolver.setValue(context, resourceBundle, new Object(), new Object());
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testIsReadOnly01() {
ResourceBundleELResolver resolver = new ResourceBundleELResolver();
resolver.isReadOnly(null, new Object(), new Object());
}
/**
* Tests that the propertyResolved is false and readOnly is false if base is
* not ResourceBundle.
*/
@Test
public void testIsReadOnly02() {
ResourceBundleELResolver resolver = new ResourceBundleELResolver();
ELContext context = new ELContextImpl();
boolean result = resolver.isReadOnly(context, new Object(),
new Object());
Assert.assertFalse(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Tests that the readOnly is true always when the base is ResourceBundle.
*/
@Test
public void testIsReadOnly03() {
ResourceBundleELResolver resolver = new ResourceBundleELResolver();
ELContext context = new ELContextImpl();
ResourceBundle resourceBundle = new TesterResourceBundle();
boolean result = resolver.isReadOnly(context, resourceBundle,
new Object());
Assert.assertTrue(result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a valid FeatureDescriptors are not returned if base is not
* ResourceBundle.
*/
@Test
public void testGetFeatureDescriptors01() {
ResourceBundleELResolver resolver = new ResourceBundleELResolver();
ELContext context = new ELContextImpl();
@SuppressWarnings("unchecked")
Iterator<FeatureDescriptor> result = resolver.getFeatureDescriptors(
context, new Object());
Assert.assertNull(result);
}
/**
* Tests that a valid FeatureDescriptors are returned.
*/
@Test
public void testGetFeatureDescriptors02() {
ResourceBundleELResolver resolver = new ResourceBundleELResolver();
ELContext context = new ELContextImpl();
ResourceBundle resourceBundle = new TesterResourceBundle(
new Object[][] { { "key", "value" } });
@SuppressWarnings("unchecked")
Iterator<FeatureDescriptor> result = resolver.getFeatureDescriptors(
context, resourceBundle);
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(String.class,
featureDescriptor.getValue(ELResolver.TYPE));
Assert.assertEquals(Boolean.TRUE, featureDescriptor
.getValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME));
}
}
private static class TesterResourceBundle extends ListResourceBundle {
public TesterResourceBundle() {
this(new Object[][] { { "key1", "value1" }, { "key2", "value2" } });
}
public TesterResourceBundle(Object[][] contents) {
this.contents = contents;
}
@Override
protected Object[][] getContents() {
return contents;
}
private Object[][] contents;
}
private void doNegativeTest(Object base, Object trigger,
MethodUnderTest method, boolean checkResult) {
ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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
}
}