/*
* 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 org.junit.Assert;
import org.junit.Test;
public class TestArrayELResolver {
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testGetType01() {
ArrayELResolver resolver = new ArrayELResolver();
resolver.getType(null, new Object(), new Object());
}
/**
* Tests that a valid property is not resolved if base is not an array.
*/
@Test
public void testGetType02() {
doNegativeTest(new Object(), new Object(), MethodUnderTest.GET_TYPE, true);
}
/**
* Tests that a valid property is resolved.
*/
@Test
public void testGetType03() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
Class<?> result = resolver.getType(context, base, Integer.valueOf(0));
Assert.assertEquals(base.getClass().getComponentType(), 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() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
resolver.getType(context, base, Integer.valueOf(1));
}
/**
* Tests that a result is returned even when a coercion cannot be performed.
*/
@Test
public void testGetType05() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
Class<?> result = resolver.getType(context, base, "index");
Assert.assertEquals(base.getClass().getComponentType(), result);
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a null result is returned when the base is null.
*/
@Test
public void testGetType06() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
Class<?> result = resolver.getType(context, null, "index");
Assert.assertNull(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testGetValue01() {
ArrayELResolver resolver = new ArrayELResolver();
resolver.getValue(null, new Object(), new Object());
}
/**
* Tests that a valid property is not resolved if base is not an array.
*/
@Test
public void testGetValue02() {
doNegativeTest(new Object(), new Object(), MethodUnderTest.GET_VALUE, true);
}
/**
* Tests that a valid property is resolved.
*/
@Test
public void testGetValue03() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
Object result = resolver.getValue(context, base, Integer.valueOf(0));
Assert.assertEquals("element", result);
Assert.assertTrue(context.isPropertyResolved());
}
@Test
public void testGetValueCoercion01() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
Object result = resolver.getValue(context, base, Character.valueOf((char) 0));
Assert.assertEquals("element", result);
Assert.assertTrue(context.isPropertyResolved());
}
@Test
public void testGetValueCoercion02a() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
Object result = resolver.getValue(context, base, Boolean.FALSE);
Assert.assertEquals("element", result);
Assert.assertTrue(context.isPropertyResolved());
}
@Test
public void testGetValueCoercion02b() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
Object result = resolver.getValue(context, base, Boolean.TRUE);
Assert.assertNull(result);
Assert.assertTrue(context.isPropertyResolved());
}
@Test
public void testGetValueCoercion03() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
Object result = resolver.getValue(context, base, "0");
Assert.assertEquals("element", result);
Assert.assertTrue(context.isPropertyResolved());
}
@Test(expected = IllegalArgumentException.class)
public void testGetValueCoercion04() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
resolver.getValue(context, base, new Object());
}
@Test(expected = IllegalArgumentException.class)
public void testGetValueCoercion05() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
resolver.getValue(context, base, null);
}
/**
* Tests a coercion cannot be performed as the key is not integer.
*/
@Test(expected = IllegalArgumentException.class)
public void testGetValueCoercion06() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
resolver.getValue(context, base, "key");
}
/**
* Tests that if the key is out of bounds null will be returned.
*/
@Test
public void testGetValue05() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
Object result = resolver.getValue(context, base, Integer.valueOf(1));
Assert.assertNull(result);
Assert.assertTrue(context.isPropertyResolved());
result = resolver.getValue(context, base, Integer.valueOf(-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 testSetValue01() {
ArrayELResolver resolver = new ArrayELResolver();
resolver.setValue(null, new Object(), new Object(), new Object());
}
/**
* Tests that a valid property is not set if base is not an array.
*/
@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() {
ArrayELResolver resolver = new ArrayELResolver(true);
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
resolver.setValue(context, new String[] {}, new Object(), new Object());
}
/**
* Tests that a valid property is set.
*/
@Test
public void testSetValue04() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
resolver.setValue(context, base, Integer.valueOf(0), "new-element");
Assert.assertEquals("new-element", resolver.getValue(context, base, Integer.valueOf(0)));
Assert.assertTrue(context.isPropertyResolved());
resolver.setValue(context, base, Integer.valueOf(0), null);
Assert.assertEquals(null, resolver.getValue(context, base, Integer.valueOf(0)));
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests a coercion cannot be performed as the key is not integer.
*/
@Test(expected = IllegalArgumentException.class)
public void testSetValue05() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
resolver.setValue(context, base, "key", "new-element");
}
/**
* Tests that the key is out of bounds and exception will be thrown.
*/
@Test(expected = PropertyNotFoundException.class)
public void testSetValue06() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
resolver.setValue(context, base, Integer.valueOf(1), "new-element");
}
/**
* Tests that an exception will be thrown if the value is not from the corresponding type.
*/
@Test(expected = ClassCastException.class)
public void testSetValue07() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
resolver.setValue(context, base, Integer.valueOf(0), Integer.valueOf(1));
}
/**
* Tests setting arrays of primitives. https://bz.apache.org/bugzilla/show_bug.cgi?id=55691
*/
@Test
public void testSetValue08() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
int[] base = new int[] { 1, 2, 3 };
resolver.setValue(context, base, Integer.valueOf(1), Integer.valueOf(4));
Assert.assertEquals(Integer.valueOf(base[1]), Integer.valueOf(4));
}
/*
* Null base should be a NO-OP rather than an exception
*/
@Test
public void testSetValue09() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
resolver.setValue(context, null, Integer.valueOf(1), Integer.valueOf(4));
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Tests that a null context results in an NPE as per EL Javadoc.
*/
@Test(expected = NullPointerException.class)
public void testIsReadOnly01() {
ArrayELResolver resolver = new ArrayELResolver();
resolver.isReadOnly(null, new Object(), new Object());
}
/**
* Tests that the propertyResolved is false if base is not an array.
*/
@Test
public void testIsReadOnly02() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
boolean result = resolver.isReadOnly(context, new Object(), new Object());
Assert.assertFalse(result);
Assert.assertFalse(context.isPropertyResolved());
resolver = new ArrayELResolver(true);
result = resolver.isReadOnly(context, new Object(), new Object());
Assert.assertTrue(result);
Assert.assertFalse(context.isPropertyResolved());
}
/**
* Tests that if the ArrayELResolver is constructed with readOnly the method will return always true, otherwise
* false.
*/
@Test
public void testIsReadOnly03() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
boolean result = resolver.isReadOnly(context, base, Integer.valueOf(0));
Assert.assertFalse(result);
Assert.assertTrue(context.isPropertyResolved());
resolver = new ArrayELResolver(true);
result = resolver.isReadOnly(context, base, Integer.valueOf(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 testIsReadOnly04() {
doTestIsReadOutOfBounds(1);
}
@Test(expected = PropertyNotFoundException.class)
public void testIsReadOnly05() {
doTestIsReadOutOfBounds(-1);
}
private void doTestIsReadOutOfBounds(int index) {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
resolver.isReadOnly(context, base, Integer.valueOf(index));
Assert.assertTrue(context.isPropertyResolved());
}
/**
* Tests that a result is returned even when a coercion cannot be performed.
*/
@Test
public void testIsReadOnly06() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
String[] base = new String[] { "element" };
boolean result = resolver.isReadOnly(context, base, "key");
Assert.assertFalse(result);
Assert.assertTrue(context.isPropertyResolved());
resolver = new ArrayELResolver(true);
result = resolver.isReadOnly(context, base, "key");
Assert.assertTrue(result);
Assert.assertTrue(context.isPropertyResolved());
}
@Test
public void testIsReadOnly07() {
ArrayELResolver resolver = new ArrayELResolver();
ELContext context = new StandardELContext(ELManager.getExpressionFactory());
boolean result = resolver.isReadOnly(context, null, null);
Assert.assertFalse(result);
Assert.assertFalse(context.isPropertyResolved());
resolver = new ArrayELResolver(true);
result = resolver.isReadOnly(context, null, null);
Assert.assertTrue(result);
Assert.assertFalse(context.isPropertyResolved());
}
private void doNegativeTest(Object base, Object trigger, MethodUnderTest method, boolean checkResult) {
ArrayELResolver resolver = new ArrayELResolver();
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
}
@Test
public void testGetCommonPropertyType01() {
// null base, null response
ArrayELResolver resolver = new ArrayELResolver();
Assert.assertNull(resolver.getCommonPropertyType(null, null));
}
@Test
public void testGetCommonPropertyType02() {
// non-array base, null response
ArrayELResolver resolver = new ArrayELResolver();
Assert.assertNull(resolver.getCommonPropertyType(null, new Object()));
}
@Test
public void testGetCommonPropertyType03() {
// array base, Integer response
ArrayELResolver resolver = new ArrayELResolver();
Class<?> clazz = resolver.getCommonPropertyType(null, new Object[] {});
Assert.assertNotNull(clazz);
Assert.assertEquals(clazz, Integer.class);
}
}