| /* |
| * 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.beans.PropertyDescriptor; |
| import java.util.Iterator; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import org.apache.jasper.el.ELContextImpl; |
| |
| public class TestBeanELResolver { |
| |
| private static final String METHOD01_NAME = "toString"; |
| private static final String METHOD02_NAME = "<init>"; |
| private static final String METHOD03_NAME = "nonExistingMethod"; |
| private static final String BEAN_NAME = "test"; |
| private static final String PROPERTY01_NAME = "valueA"; |
| private static final String PROPERTY02_NAME = "valueB"; |
| private static final String PROPERTY03_NAME = "name"; |
| private static final String PROPERTY_VALUE = "test1"; |
| |
| @Test |
| public void testBug53421() { |
| ExpressionFactory factory = ExpressionFactory.newInstance(); |
| ELContext context = new ELContextImpl(factory); |
| |
| Bean bean = new Bean(); |
| |
| ValueExpression varBean = |
| factory.createValueExpression(bean, Bean.class); |
| context.getVariableMapper().setVariable("bean", varBean); |
| |
| |
| ValueExpression ve = factory.createValueExpression( |
| context, "${bean.valueA}", String.class); |
| Exception e = null; |
| try { |
| ve.getValue(context); |
| } catch (PropertyNotFoundException pnfe) { |
| e = pnfe; |
| } |
| Assert.assertTrue("Wrong exception type", |
| e instanceof PropertyNotFoundException); |
| String type = Bean.class.getName(); |
| String msg = e.getMessage(); |
| Assert.assertTrue("No reference to type [" + type + |
| "] where property cannot be found in [" + msg + "]", |
| msg.contains(type)); |
| } |
| |
| /** |
| * Tests that a null context results in an NPE as per EL Javadoc. |
| */ |
| @Test(expected = NullPointerException.class) |
| public void testGetType01() { |
| BeanELResolver resolver = new BeanELResolver(); |
| resolver.getType(null, new Object(), new Object()); |
| } |
| |
| /** |
| * Tests that a valid property is not resolved if base is null. |
| */ |
| @Test |
| public void testGetType02() { |
| doNegativeTest(null, new Object(), MethodUnderTest.GET_TYPE, true); |
| } |
| |
| /** |
| * Tests that a valid property is resolved. |
| */ |
| @Test |
| public void testGetType03() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| Class<?> result = resolver.getType(context, new Bean(), PROPERTY01_NAME); |
| |
| Assert.assertEquals(String.class, result); |
| Assert.assertTrue(context.isPropertyResolved()); |
| } |
| |
| /** |
| * Tests that an exception will be thrown when the property does not exist. |
| */ |
| @Test(expected = PropertyNotFoundException.class) |
| public void testGetType04() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.getType(context, new Bean(), PROPERTY02_NAME); |
| } |
| |
| /** |
| * Tests that an exception will be thrown when a coercion cannot be |
| * performed. |
| */ |
| @Test(expected = PropertyNotFoundException.class) |
| public void testGetType05() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.getType(context, new Bean(), new Object()); |
| } |
| |
| /** |
| * Tests that a null context results in an NPE as per EL Javadoc. |
| */ |
| @Test(expected = NullPointerException.class) |
| public void testGetValue01() { |
| BeanELResolver resolver = new BeanELResolver(); |
| resolver.getValue(null, new Object(), new Object()); |
| } |
| |
| /** |
| * Tests that a valid property is not resolved if base is null. |
| */ |
| @Test |
| public void testGetValue02() { |
| doNegativeTest(null, new Object(), MethodUnderTest.GET_VALUE, true); |
| } |
| |
| /** |
| * Tests that a valid property is resolved. |
| */ |
| @Test |
| public void testGetValue03() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| Object result = resolver.getValue(context, new TesterBean(BEAN_NAME), PROPERTY03_NAME); |
| |
| Assert.assertEquals(BEAN_NAME, result); |
| Assert.assertTrue(context.isPropertyResolved()); |
| } |
| |
| /** |
| * Tests that an exception will be thrown when the property does not exist. |
| */ |
| @Test(expected = PropertyNotFoundException.class) |
| public void testGetValue04() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.getValue(context, new Bean(), PROPERTY02_NAME); |
| } |
| |
| /** |
| * Tests that an exception will be thrown when a coercion cannot be |
| * performed. |
| */ |
| @Test(expected = PropertyNotFoundException.class) |
| public void testGetValue05() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.getValue(context, new Bean(), new Object()); |
| } |
| |
| /** |
| * Tests that an exception will be thrown when the property is not readable. |
| */ |
| @Test(expected = PropertyNotFoundException.class) |
| public void testGetValue06() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.getValue(context, new Bean(), PROPERTY01_NAME); |
| } |
| |
| /** |
| * Tests that getter method throws exception which should be propagated. |
| */ |
| @Test(expected = ELException.class) |
| public void testGetValue07() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.getValue(context, new TesterBean(BEAN_NAME), PROPERTY01_NAME); |
| } |
| |
| /** |
| * Tests that a null context results in an NPE as per EL Javadoc. |
| */ |
| @Test(expected = NullPointerException.class) |
| public void testSetValue01() { |
| BeanELResolver resolver = new BeanELResolver(); |
| resolver.setValue(null, new Object(), new Object(), new Object()); |
| } |
| |
| /** |
| * Tests that a valid property is not resolved if base is null. |
| */ |
| @Test |
| public void testSetValue02() { |
| doNegativeTest(null, new Object(), MethodUnderTest.SET_VALUE, true); |
| } |
| |
| /** |
| * Tests that an exception is thrown when readOnly is true. |
| */ |
| @Test(expected = PropertyNotWritableException.class) |
| public void testSetValue03() { |
| BeanELResolver resolver = new BeanELResolver(true); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.setValue(context, new Bean(), new Object(), new Object()); |
| } |
| |
| /** |
| * Tests that a valid property is resolved. |
| */ |
| @Test |
| public void testSetValue04() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| TesterBean bean = new TesterBean(BEAN_NAME); |
| resolver.setValue(context, bean, PROPERTY03_NAME, PROPERTY_VALUE); |
| |
| Assert.assertEquals(PROPERTY_VALUE, resolver.getValue(context, bean, PROPERTY03_NAME)); |
| Assert.assertTrue(context.isPropertyResolved()); |
| } |
| |
| /** |
| * Tests that an exception will be thrown when a coercion cannot be |
| * performed. |
| */ |
| @Test(expected = PropertyNotFoundException.class) |
| public void testSetValue05() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.setValue(context, new Bean(), new Object(), PROPERTY_VALUE); |
| } |
| |
| /** |
| * Tests that an exception will be thrown when the property does not exist. |
| */ |
| @Test(expected = PropertyNotFoundException.class) |
| public void testSetValue06() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.setValue(context, new Bean(), PROPERTY02_NAME, PROPERTY_VALUE); |
| } |
| |
| /** |
| * Tests that an exception will be thrown when the property does not have |
| * setter method. |
| */ |
| @Test(expected = PropertyNotWritableException.class) |
| public void testSetValue07() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.setValue(context, new TesterBean(BEAN_NAME), PROPERTY01_NAME, PROPERTY_VALUE); |
| } |
| |
| /** |
| * Tests that a null context results in an NPE as per EL Javadoc. |
| */ |
| @Test(expected = NullPointerException.class) |
| public void testIsReadOnly01() { |
| BeanELResolver resolver = new BeanELResolver(); |
| resolver.isReadOnly(null, new Object(), new Object()); |
| } |
| |
| /** |
| * Tests that the propertyResolved is false if base is null. |
| */ |
| @Test |
| public void testIsReadOnly02() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.isReadOnly(context, null, new Object()); |
| |
| Assert.assertFalse(context.isPropertyResolved()); |
| |
| resolver = new BeanELResolver(true); |
| |
| resolver.isReadOnly(context, null, new Object()); |
| |
| Assert.assertFalse(context.isPropertyResolved()); |
| } |
| |
| /** |
| * Tests that if the BeanELResolver is constructed with readOnly the method |
| * will return always true. |
| */ |
| @Test |
| public void testIsReadOnly03() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| boolean result = resolver.isReadOnly(context, new TesterBean(BEAN_NAME), PROPERTY03_NAME); |
| |
| Assert.assertFalse(result); |
| Assert.assertTrue(context.isPropertyResolved()); |
| |
| resolver = new BeanELResolver(true); |
| |
| result = resolver.isReadOnly(context, new TesterBean(BEAN_NAME), PROPERTY03_NAME); |
| |
| Assert.assertTrue(result); |
| Assert.assertTrue(context.isPropertyResolved()); |
| } |
| |
| /** |
| * Tests that an exception is thrown when a coercion cannot be performed. |
| */ |
| @Test(expected = PropertyNotFoundException.class) |
| public void testIsReadOnly04() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.isReadOnly(context, new TesterBean(BEAN_NAME), new Integer(0)); |
| } |
| |
| /** |
| * Tests that an exception will be thrown when the property does not exist. |
| */ |
| @Test(expected = PropertyNotFoundException.class) |
| public void testIsReadOnly05() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.isReadOnly(context, new Bean(), PROPERTY02_NAME); |
| } |
| |
| /** |
| * Tests that true will be returned when the property does not have setter |
| * method. |
| */ |
| @Test |
| public void testIsReadOnly06() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| boolean result = resolver.isReadOnly(context, new TesterBean(BEAN_NAME), PROPERTY01_NAME); |
| |
| Assert.assertTrue(result); |
| Assert.assertTrue(context.isPropertyResolved()); |
| } |
| |
| /** |
| * Tests that a valid FeatureDescriptors are not returned if base is not |
| * Map. |
| */ |
| @Test |
| public void testGetFeatureDescriptors01() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| Iterator<FeatureDescriptor> result = resolver.getFeatureDescriptors(context, null); |
| |
| Assert.assertNull(result); |
| } |
| |
| /** |
| * Tests that a valid FeatureDescriptors are returned. |
| */ |
| @Test |
| public void testGetFeatureDescriptors02() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| Iterator<FeatureDescriptor> result = resolver.getFeatureDescriptors(context, new Bean()); |
| |
| while (result.hasNext()) { |
| PropertyDescriptor featureDescriptor = (PropertyDescriptor) result.next(); |
| Assert.assertEquals(featureDescriptor.getPropertyType(), |
| featureDescriptor.getValue(ELResolver.TYPE)); |
| Assert.assertEquals(Boolean.TRUE, |
| featureDescriptor.getValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME)); |
| } |
| } |
| |
| /** |
| * Tests that a null context results in an NPE as per EL Javadoc. |
| */ |
| @Test(expected = NullPointerException.class) |
| public void testInvoke01() { |
| BeanELResolver resolver = new BeanELResolver(); |
| resolver.invoke(null, new Object(), new Object(), new Class<?>[0], new Object[0]); |
| } |
| |
| /** |
| * Tests that a valid property is not resolved if base is null. |
| */ |
| @Test |
| public void testInvoke02() { |
| doNegativeTest(null, new Object(), MethodUnderTest.INVOKE, true); |
| } |
| |
| /** |
| * Tests a method invocation. |
| */ |
| @Test |
| public void testInvoke03() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| Object result = resolver.invoke(context, new TesterBean(BEAN_NAME), METHOD01_NAME, |
| new Class<?>[] {}, new Object[] {}); |
| |
| Assert.assertEquals(BEAN_NAME, result); |
| Assert.assertTrue(context.isPropertyResolved()); |
| } |
| |
| /** |
| * Tests that the method name cannot be coerced to String. |
| */ |
| @Test |
| public void testInvoke04() { |
| doNegativeTest(new Bean(), null, MethodUnderTest.INVOKE, true); |
| } |
| |
| /** |
| * Tests that a call to <init> as a method name will throw an exception. |
| */ |
| @Test(expected = MethodNotFoundException.class) |
| public void testInvoke05() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.invoke(context, new TesterBean(BEAN_NAME), METHOD02_NAME, new Class<?>[] {}, |
| new Object[] {}); |
| } |
| |
| /** |
| * Tests that a call to a non existing method will throw an exception. |
| */ |
| @Test(expected = MethodNotFoundException.class) |
| public void testInvoke06() { |
| BeanELResolver resolver = new BeanELResolver(); |
| ELContext context = new StandardELContext(ELManager.getExpressionFactory()); |
| |
| resolver.invoke(context, new TesterBean(BEAN_NAME), METHOD03_NAME, new Class<?>[] {}, |
| new Object[] {}); |
| } |
| |
| private static class Bean { |
| |
| @SuppressWarnings("unused") |
| public void setValueA(String valueA) { |
| // NOOP |
| } |
| } |
| |
| private void doNegativeTest(Object base, Object trigger, MethodUnderTest method, |
| boolean checkResult) { |
| BeanELResolver resolver = new BeanELResolver(); |
| 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; |
| } |
| case INVOKE: { |
| result = resolver.invoke(context, base, trigger, new Class<?>[0], new Object[0]); |
| 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, INVOKE |
| } |
| |
| } |