| /* |
| * 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; |
| |
| 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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<String> list = new ArrayList<>(); |
| list.add("key"); |
| Object result = resolver.getValue(context, list, Integer.valueOf(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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<String> list = new ArrayList<>(); |
| 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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<String> list = new ArrayList<>(); |
| list.add("key"); |
| Object result = resolver.getValue(context, list, Integer.valueOf(1)); |
| |
| Assert.assertNull(result); |
| Assert.assertTrue(context.isPropertyResolved()); |
| |
| result = resolver.getValue(context, list, 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 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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<String> list = new ArrayList<>(); |
| list.add("key"); |
| Class<?> result = resolver.getType(context, list, Integer.valueOf(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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<String> list = new ArrayList<>(); |
| list.add("key"); |
| resolver.getType(context, list, Integer.valueOf(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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| resolver.setValue(context, new ArrayList<>(), new Object(), |
| new Object()); |
| } |
| |
| /** |
| * Tests that a valid property is set. |
| */ |
| @Test |
| public void testSetValue04() { |
| ListELResolver resolver = new ListELResolver(); |
| ELContext context = new StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<String> list = new ArrayList<>(); |
| list.add("value"); |
| resolver.setValue(context, list, Integer.valueOf(0), "value"); |
| |
| Assert.assertEquals("value", |
| resolver.getValue(context, list, Integer.valueOf(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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<Object> list = Collections.unmodifiableList(new ArrayList<>()); |
| resolver.setValue(context, list, Integer.valueOf(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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<String> list = new ArrayList<>(); |
| 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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<String> list = new ArrayList<>(); |
| list.add("key"); |
| resolver.setValue(context, list, Integer.valueOf(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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| 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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<String> list = new ArrayList<>(); |
| list.add("key"); |
| boolean result = resolver.isReadOnly(context, list, Integer.valueOf(0)); |
| |
| Assert.assertFalse(result); |
| Assert.assertTrue(context.isPropertyResolved()); |
| |
| resolver = new ListELResolver(true); |
| |
| result = resolver.isReadOnly(context, list, Integer.valueOf(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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<String> list = new ArrayList<>(); |
| list.add("key"); |
| List<String> unmodifiableList = Collections.unmodifiableList(list); |
| boolean result = resolver.isReadOnly(context, unmodifiableList, |
| 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 testIsReadOnly05() { |
| ListELResolver resolver = new ListELResolver(); |
| ELContext context = new StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<String> list = new ArrayList<>(); |
| list.add("key"); |
| resolver.isReadOnly(context, list, Integer.valueOf(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 StandardELContext( |
| ELManager.getExpressionFactory()); |
| |
| List<String> list = new ArrayList<>(); |
| 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 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 static enum MethodUnderTest { |
| GET_VALUE, SET_VALUE, GET_TYPE |
| } |
| |
| } |