/*
* 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 TestStaticFieldELResolver {
private static final String PROPERTY01_NAME = "publicStaticString";
private static final String PROPERTY01_VALUE = "publicStaticStringNewValue";
private static final String PROPERTY02_NAME = "nonExistingString";
private static final String PROPERTY03_NAME = "publicString";
private static final String PROPERTY04_NAME = "privateStaticString";
private static final String PROPERTY05_NAME = "privateString";
private static final String METHOD01_NAME = "<init>";
private static final String METHOD02_NAME = "getPublicStaticString";
private static final String METHOD03_NAME = "setPrivateString";
private static final String METHOD04_NAME = "printPublicStaticString";
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testGetValue01() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
resolver.getValue(null, new Object(), new Object());
}
/**
* Tests that a valid property is resolved.
*/
@Test
public void testGetValue02() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
Object result = resolver.getValue(context, new ELClass(
TesterClass.class), PROPERTY01_NAME);
Assert.assertEquals(PROPERTY01_NAME, result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a valid property is not resolved if base is not ELCLass.
*/
@Test
public void testGetValue03() {
doNegativeTest(new Object(), PROPERTY01_NAME, MethodUnderTest.GET_VALUE);
}
/**
* Tests that non String property is not resolved.
*/
@Test
public void testGetValue04() {
doNegativeTest(new ELClass(TesterClass.class), new Object(),
MethodUnderTest.GET_VALUE);
}
/**
* Property doesn't exist
*/
@Test
public void testGetValue05() {
doThrowableTest(PROPERTY02_NAME, MethodUnderTest.GET_VALUE, true);
}
/**
* Property is not static
*/
@Test
public void testGetValue06() {
doThrowableTest(PROPERTY03_NAME, MethodUnderTest.GET_VALUE, false);
}
/**
* Property is not public
*/
@Test
public void testGetValue07() {
doThrowableTest(PROPERTY04_NAME, MethodUnderTest.GET_VALUE, true);
}
/**
* Property is neither public nor static
*/
@Test
public void testGetValue08() {
doThrowableTest(PROPERTY05_NAME, MethodUnderTest.GET_VALUE, true);
}
/**
* Tests that a valid property of Enum is resolved.
*/
@Test
public void testGetValue09() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
Object result = resolver.getValue(context, new ELClass(
MethodUnderTest.class), MethodUnderTest.GET_TYPE.toString());
Assert.assertEquals(MethodUnderTest.GET_TYPE, 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() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
resolver.setValue(null, new Object(), new Object(), new Object());
}
/**
* Tests that cannot write to a static field.
*/
@Test(expected = PropertyNotWritableException.class)
public void testSetValue02() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
resolver.setValue(context, new ELClass(TesterClass.class),
PROPERTY01_NAME, PROPERTY01_VALUE);
}
/**
* Tests that the operation is not invoked if base is not ELCLass.
*/
@Test
public void testSetValue03() {
doNegativeTest(new Object(), PROPERTY01_NAME, MethodUnderTest.SET_VALUE);
}
/**
* Tests that the operation is no invoked when the property is not String.
*/
@Test
public void testSetValue04() {
doNegativeTest(new ELClass(TesterClass.class), new Object(),
MethodUnderTest.SET_VALUE);
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testIsReadOnly01() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
resolver.isReadOnly(null, new Object(), new Object());
}
/**
* Tests that the propertyResolved is true when base is ELCLass and the
* property is String.
*/
@Test
public void testIsReadOnly02() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
boolean result = resolver.isReadOnly(context, new ELClass(
TesterClass.class), PROPERTY01_NAME);
Assert.assertTrue(result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that the propertyResolved is false if base is not ELCLass.
*/
@Test
public void testIsReadOnly03() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
boolean result = resolver.isReadOnly(context, new Object(),
PROPERTY01_NAME);
Assert.assertTrue(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Tests that the propertyResolved is false when the property is not String.
*/
@Test
public void testIsReadOnly04() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
boolean result = resolver.isReadOnly(context, new ELClass(
TesterClass.class), new Object());
Assert.assertTrue(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testGetType01() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
resolver.getType(null, new Object(), new Object());
}
/**
* Tests that a valid property is resolved.
*/
@Test
public void testGetType02() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
Class<?> result = resolver.getType(context, new ELClass(
TesterClass.class), PROPERTY01_NAME);
Assert.assertEquals(PROPERTY01_NAME.getClass(), result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a valid property is not resolved if base is not ELCLass.
*/
@Test
public void testGetType03() {
doNegativeTest(new Object(), PROPERTY01_NAME, MethodUnderTest.GET_TYPE);
}
/**
* Tests that non String property is not resolved.
*/
@Test
public void testGetType04() {
doNegativeTest(new ELClass(TesterClass.class), new Object(),
MethodUnderTest.GET_TYPE);
}
/**
* Property doesn't exist
*/
@Test
public void testGetType05() {
doThrowableTest(PROPERTY02_NAME, MethodUnderTest.GET_TYPE, true);
}
/**
* Property is not static
*/
@Test
public void testGetType06() {
doThrowableTest(PROPERTY03_NAME, MethodUnderTest.GET_TYPE, false);
}
/**
* Property is not public
*/
@Test
public void testGetType07() {
doThrowableTest(PROPERTY04_NAME, MethodUnderTest.GET_TYPE, true);
}
/**
* Property is neither public nor static
*/
@Test
public void testGetType08() {
doThrowableTest(PROPERTY05_NAME, MethodUnderTest.GET_TYPE, true);
}
/**
* Tests that a valid property of Enum is resolved.
*/
@Test
public void testGetType09() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
Class<?> result = resolver.getType(context, new ELClass(
MethodUnderTest.class), MethodUnderTest.GET_TYPE.toString());
Assert.assertEquals(MethodUnderTest.GET_TYPE.getClass(), result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testInvoke01() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
resolver.invoke(null, new Object(), new Object(), new Class<?>[] {},
new Object[] {});
}
/**
* Tests a constructor invocation.
*/
@Test
public void testInvoke02() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
Object result = resolver.invoke(context,
new ELClass(TesterClass.class), METHOD01_NAME, null, null);
Assert.assertEquals(TesterClass.class, result.getClass());
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests a method invocation.
*/
@Test
public void testInvoke03() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
Object result = resolver.invoke(context,
new ELClass(TesterClass.class), METHOD02_NAME,
new Class<?>[] {}, new Object[] {});
Assert.assertEquals(PROPERTY01_NAME, result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a valid method is not resolved if base is not ELCLass.
*/
@Test
public void testInvoke04() {
doNegativeTest(new Object(), METHOD02_NAME, MethodUnderTest.INVOKE);
}
/**
* Tests that non String method name is not resolved.
*/
@Test
public void testInvoke05() {
doNegativeTest(new ELClass(TesterClass.class), new Object(),
MethodUnderTest.INVOKE);
}
/**
* Tests that a private constructor invocation will fail.
*/
@Test
public void testInvoke06() {
doThrowableTest(METHOD01_NAME, MethodUnderTest.INVOKE, false);
}
/**
* Tests that a non static method invocation will fail.
*/
@Test
public void testInvoke07() {
doThrowableTest(METHOD03_NAME, MethodUnderTest.INVOKE, false);
}
/**
* Tests a void method invocation.
*/
@Test
public void testInvoke08() {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
Object result = resolver.invoke(context,
new ELClass(TesterClass.class), METHOD04_NAME,
new Class<?>[] {}, new Object[] {});
Assert.assertNull(result);
Assert.assertTrue(context.isPropertyResolved());
}
private void doNegativeTest(Object elClass, Object trigger,
MethodUnderTest method) {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
Object result = null;
switch (method) {
case GET_VALUE: {
result = resolver.getValue(context, elClass, trigger);
break;
}
case SET_VALUE: {
resolver.setValue(context, elClass, trigger, PROPERTY01_VALUE);
result = resolver.getValue(context, elClass, trigger);
break;
}
case GET_TYPE: {
result = resolver.getType(context, elClass, trigger);
break;
}
case INVOKE: {
result = resolver.invoke(context, elClass, trigger,
new Class<?>[] { String.class }, new Object[] { "test" });
break;
}
default: {
// Should never happen
Assert.fail("Missing case for method");
}
}
Assert.assertNull(result);
Assert.assertFalse(context.isPropertyResolved());
}
private void doThrowableTest(String trigger, MethodUnderTest method,
boolean checkCause) {
StaticFieldELResolver resolver = new StaticFieldELResolver();
ELContext context = new StandardELContext(
ELManager.getExpressionFactory());
ELException exception = null;
try {
switch (method) {
case GET_VALUE: {
resolver.getValue(context, new ELClass(TesterClass.class),
trigger);
break;
}
case GET_TYPE: {
resolver.getType(context, new ELClass(TesterClass.class),
trigger);
break;
}
case INVOKE: {
resolver.invoke(context, new ELClass(TesterClass.class),
trigger, new Class<?>[] { String.class },
new Object[] { "test" });
break;
}
default: {
// Should never happen
Assert.fail("Missing case for method");
}
}
} catch (PropertyNotFoundException | MethodNotFoundException e) {
exception = e;
}
Assert.assertTrue(context.isPropertyResolved());
Assert.assertNotNull(exception);
if (checkCause) {
// Can't be null due to assertion above
Throwable cause = exception.getCause();
Assert.assertNotNull(cause);
}
}
private static enum MethodUnderTest {
GET_VALUE, SET_VALUE, GET_TYPE, INVOKE
}
}