/*
* 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 org.junit.Assert;
import org.junit.Test;
public class TestBeanNameELResolver {
private static final String BEAN01_NAME = "bean01";
private static final TesterBean BEAN01 = new TesterBean(BEAN01_NAME);
private static final String BEAN02_NAME = "bean02";
private static final TesterBean BEAN02 = new TesterBean(BEAN02_NAME);
private static final String BEAN99_NAME = "bean99";
private static final TesterBean BEAN99 = new TesterBean(BEAN99_NAME);
/**
* Creates the resolver that is used for the test. All the tests use a
* resolver with the same configuration.
*/
private BeanNameELResolver createBeanNameELResolver() {
return createBeanNameELResolver(true);
}
private BeanNameELResolver createBeanNameELResolver(boolean allowCreate) {
TesterBeanNameResolver beanNameResolver = new TesterBeanNameResolver();
beanNameResolver.setBeanValue(BEAN01_NAME, BEAN01);
beanNameResolver.setBeanValue(BEAN02_NAME, BEAN02);
beanNameResolver.setAllowCreate(allowCreate);
BeanNameELResolver beanNameELResolver =
new BeanNameELResolver(beanNameResolver);
return beanNameELResolver;
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected=NullPointerException.class)
public void testGetValue01() {
BeanNameELResolver resolver = createBeanNameELResolver();
resolver.getValue(null, new Object(), new Object());
}
/**
* Tests that a valid bean is resolved.
*/
@Test
public void testGetValue02() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
Object result = resolver.getValue(context, null, BEAN01_NAME);
Assert.assertEquals(BEAN01, result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a valid bean is not resolved if base is non-null.
*/
@Test
public void testGetValue03() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
Object result = resolver.getValue(context, new Object(), BEAN01_NAME);
Assert.assertNull(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Tests that a valid bean is not resolved if property is not a String even
* if it can be coerced to a valid bean name.
*/
@Test
public void testGetValue04() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
Object property = new Object() {
@Override
public String toString() {
return BEAN01_NAME;
}
};
Object result = resolver.getValue(context, null, property);
Assert.assertNull(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Beans that don't exist shouldn't return anything
*/
@Test
public void testGetValue05() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
Object result = resolver.getValue(context, null, BEAN99_NAME);
Assert.assertNull(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Exception during resolution should be wrapped and re-thrown.
*/
@Test
public void testGetValue06() {
doThrowableTest(TesterBeanNameResolver.EXCEPTION_TRIGGER_NAME,
MethodUnderTest.GET_VALUE);
}
/**
* Throwable during resolution should be wrapped and re-thrown.
*/
@Test
public void testGetValue07() {
doThrowableTest(TesterBeanNameResolver.THROWABLE_TRIGGER_NAME,
MethodUnderTest.GET_VALUE);
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected=NullPointerException.class)
public void testSetValue01() {
BeanNameELResolver resolver = createBeanNameELResolver();
resolver.setValue(null, new Object(), new Object(), new Object());
}
/**
* Test replace with create enabled.
*/
@Test
public void testSetValue02() {
doSetValueCreateReplaceTest(true, BEAN01_NAME);
}
/**
* Test replace with create disabled.
*/
@Test
public void testSetValue03() {
doSetValueCreateReplaceTest(false, BEAN01_NAME);
}
/**
* Test create with create enabled.
*/
@Test
public void testSetValue04() {
doSetValueCreateReplaceTest(true, BEAN99_NAME);
}
/**
* Test create with create disabled.
*/
@Test
public void testSetValue05() {
doSetValueCreateReplaceTest(false, BEAN99_NAME);
}
/**
* Test replacing a read-only bean with create enabled.
*/
@Test(expected=PropertyNotWritableException.class)
public void testSetValue06() {
doSetValueCreateReplaceTest(true,
TesterBeanNameResolver.READ_ONLY_NAME);
}
/**
* Test replacing a read-only bean with create disable.
*/
@Test(expected=PropertyNotWritableException.class)
public void testSetValue07() {
doSetValueCreateReplaceTest(false,
TesterBeanNameResolver.READ_ONLY_NAME);
}
/**
* Exception during resolution should be wrapped and re-thrown.
*/
@Test
public void testSetValue08() {
doThrowableTest(TesterBeanNameResolver.EXCEPTION_TRIGGER_NAME,
MethodUnderTest.SET_VALUE);
}
/**
* Throwable during resolution should be wrapped and re-thrown.
*/
@Test
public void testSetValue09() {
doThrowableTest(TesterBeanNameResolver.THROWABLE_TRIGGER_NAME,
MethodUnderTest.SET_VALUE);
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected=NullPointerException.class)
public void testGetType01() {
BeanNameELResolver resolver = createBeanNameELResolver();
resolver.getType(null, new Object(), new Object());
}
/**
* Tests that a valid bean is resolved.
*/
@Test
public void testGetType02() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
Class<?> result = resolver.getType(context, null, BEAN01_NAME);
Assert.assertEquals(BEAN01.getClass(), result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a valid bean is not resolved if base is non-null.
*/
@Test
public void testGetType03() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
Class<?> result = resolver.getType(context, new Object(), BEAN01_NAME);
Assert.assertNull(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Tests that a valid bean is not resolved if property is not a String even
* if it can be coerced to a valid bean name.
*/
@Test
public void testGetType04() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
Object property = new Object() {
@Override
public String toString() {
return BEAN01_NAME;
}
};
Class<?> result = resolver.getType(context, null, property);
Assert.assertNull(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Beans that don't exist shouldn't return anything
*/
@Test
public void testGetType05() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
Class<?> result = resolver.getType(context, null, BEAN99_NAME);
Assert.assertNull(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Exception during resolution should be wrapped and re-thrown.
*/
@Test
public void testGetType06() {
doThrowableTest(TesterBeanNameResolver.EXCEPTION_TRIGGER_NAME,
MethodUnderTest.GET_TYPE);
}
/**
* Throwable during resolution should be wrapped and re-thrown.
*/
@Test
public void testGetType07() {
doThrowableTest(TesterBeanNameResolver.THROWABLE_TRIGGER_NAME,
MethodUnderTest.GET_TYPE);
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected=NullPointerException.class)
public void testIsReadOnly01() {
BeanNameELResolver resolver = createBeanNameELResolver();
resolver.isReadOnly(null, new Object(), new Object());
}
/**
* Tests that a writable bean is reported as writable.
*/
@Test
public void testIsReadOnly02() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
boolean result = resolver.isReadOnly(context, null, BEAN01_NAME);
Assert.assertFalse(result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a read-only bean is reported as not writable.
*/
@Test
public void testIsReadOnly03() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
boolean result = resolver.isReadOnly(context, null,
TesterBeanNameResolver.READ_ONLY_NAME);
Assert.assertTrue(result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a valid bean is not resolved if base is non-null.
*/
@Test
public void testIsReadOnly04() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
resolver.isReadOnly(context, new Object(), BEAN01_NAME);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Tests that a valid bean is not resolved if property is not a String even
* if it can be coerced to a valid bean name.
*/
@Test
public void testIsReadOnly05() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
Object property = new Object() {
@Override
public String toString() {
return BEAN01_NAME;
}
};
resolver.isReadOnly(context, null, property);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Beans that don't exist should not resolve
*/
@Test
public void testIsReadOnly06() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
resolver.isReadOnly(context, null, BEAN99_NAME);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Exception during resolution should be wrapped and re-thrown.
*/
@Test
public void testIsReadOnly07() {
doThrowableTest(TesterBeanNameResolver.EXCEPTION_TRIGGER_NAME,
MethodUnderTest.IS_READ_ONLY);
}
/**
* Throwable during resolution should be wrapped and re-thrown.
*/
@Test
public void testIsReadOnly08() {
doThrowableTest(TesterBeanNameResolver.THROWABLE_TRIGGER_NAME,
MethodUnderTest.IS_READ_ONLY);
}
/**
* Confirm it returns null for 'valid' input.
*/
public void testGetFeatureDescriptors01() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
Object result = resolver.getFeatureDescriptors(context, null);
Assert.assertNull(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Confirm it returns null for invalid input.
*/
public void testGetFeatureDescriptors02() {
BeanNameELResolver resolver = createBeanNameELResolver();
Object result = resolver.getFeatureDescriptors(null, new Object());
Assert.assertNull(result);
}
/**
* Confirm it returns String.class for 'valid' input.
*/
public void testGetCommonPropertyType01() {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
Object result = resolver.getCommonPropertyType(context, null);
Assert.assertNull(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Confirm it returns String.class for invalid input.
*/
public void testGetCommonPropertyType02() {
BeanNameELResolver resolver = createBeanNameELResolver();
Object result = resolver.getCommonPropertyType(null, new Object());
Assert.assertNull(result);
}
private void doThrowableTest(String trigger, MethodUnderTest method) {
BeanNameELResolver resolver = createBeanNameELResolver();
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
ELException elException = null;
try {
switch (method) {
case GET_VALUE: {
resolver.getValue(context, null, trigger);
break;
}
case SET_VALUE: {
resolver.setValue(context, null, trigger, new Object());
break;
}
case GET_TYPE: {
resolver.getType(context, null, trigger);
break;
}
case IS_READ_ONLY: {
resolver.isReadOnly(context, null, trigger);
break;
}
default: {
// Should never happen
Assert.fail("Missing case for method");
}
}
} catch (ELException e) {
elException = e;
}
Assert.assertFalse(context.isPropertyResolved());
Assert.assertNotNull(elException);
Throwable cause = elException.getCause();
Assert.assertNotNull(cause);
}
/**
* Tests adding/replacing beans beans
*/
private void doSetValueCreateReplaceTest(boolean canCreate,
String beanName) {
BeanNameELResolver resolver = createBeanNameELResolver(canCreate);
ELContext context =
new StandardELContext(ELManager.getExpressionFactory());
// Get bean one to be sure it has been replaced when testing replace
Object bean = resolver.getValue(context, null, BEAN01_NAME);
Assert.assertTrue(context.isPropertyResolved());
Assert.assertEquals(BEAN01, bean);
// Reset context
context.setPropertyResolved(false);
// Replace BEAN01
resolver.setValue(context, null, beanName, BEAN99);
if (canCreate || BEAN01_NAME.equals(beanName)) {
Assert.assertTrue(context.isPropertyResolved());
// Obtain BEAN01 again
context.setPropertyResolved(false);
bean = resolver.getValue(context, null, beanName);
Assert.assertTrue(context.isPropertyResolved());
Assert.assertEquals(BEAN99, bean);
} else {
Assert.assertFalse(context.isPropertyResolved());
// Obtain BEAN01 again
context.setPropertyResolved(false);
bean = resolver.getValue(context, null, BEAN01_NAME);
Assert.assertTrue(context.isPropertyResolved());
Assert.assertEquals(BEAN01, bean);
}
}
private static enum MethodUnderTest {
GET_VALUE,
SET_VALUE,
GET_TYPE,
IS_READ_ONLY
}
}