616 lines
17 KiB
Java
616 lines
17 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package javax.el;
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import org.junit.Assert;
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import org.junit.Test;
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public class TestBeanNameELResolver {
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private static final String BEAN01_NAME = "bean01";
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private static final TesterBean BEAN01 = new TesterBean(BEAN01_NAME);
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private static final String BEAN02_NAME = "bean02";
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private static final TesterBean BEAN02 = new TesterBean(BEAN02_NAME);
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private static final String BEAN99_NAME = "bean99";
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private static final TesterBean BEAN99 = new TesterBean(BEAN99_NAME);
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/**
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* Creates the resolver that is used for the test. All the tests use a
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* resolver with the same configuration.
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*/
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private BeanNameELResolver createBeanNameELResolver() {
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return createBeanNameELResolver(true);
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}
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private BeanNameELResolver createBeanNameELResolver(boolean allowCreate) {
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TesterBeanNameResolver beanNameResolver = new TesterBeanNameResolver();
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beanNameResolver.setBeanValue(BEAN01_NAME, BEAN01);
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beanNameResolver.setBeanValue(BEAN02_NAME, BEAN02);
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beanNameResolver.setAllowCreate(allowCreate);
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BeanNameELResolver beanNameELResolver =
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new BeanNameELResolver(beanNameResolver);
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return beanNameELResolver;
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}
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/**
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* Tests that a null context results in an NPE as per EL Javadoc.
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*/
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@Test(expected=NullPointerException.class)
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public void testGetValue01() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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resolver.getValue(null, new Object(), new Object());
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}
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/**
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* Tests that a valid bean is resolved.
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*/
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@Test
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public void testGetValue02() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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Object result = resolver.getValue(context, null, BEAN01_NAME);
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Assert.assertEquals(BEAN01, result);
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Assert.assertTrue(context.isPropertyResolved());
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}
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/**
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* Tests that a valid bean is not resolved if base is non-null.
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*/
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@Test
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public void testGetValue03() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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Object result = resolver.getValue(context, new Object(), BEAN01_NAME);
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Assert.assertNull(result);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Tests that a valid bean is not resolved if property is not a String even
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* if it can be coerced to a valid bean name.
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*/
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@Test
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public void testGetValue04() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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Object property = new Object() {
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@Override
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public String toString() {
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return BEAN01_NAME;
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}
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};
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Object result = resolver.getValue(context, null, property);
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Assert.assertNull(result);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Beans that don't exist shouldn't return anything
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*/
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@Test
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public void testGetValue05() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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Object result = resolver.getValue(context, null, BEAN99_NAME);
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Assert.assertNull(result);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Exception during resolution should be wrapped and re-thrown.
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*/
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@Test
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public void testGetValue06() {
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doThrowableTest(TesterBeanNameResolver.EXCEPTION_TRIGGER_NAME,
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MethodUnderTest.GET_VALUE);
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}
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/**
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* Throwable during resolution should be wrapped and re-thrown.
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*/
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@Test
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public void testGetValue07() {
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doThrowableTest(TesterBeanNameResolver.THROWABLE_TRIGGER_NAME,
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MethodUnderTest.GET_VALUE);
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}
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/**
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* Tests that a null context results in an NPE as per EL Javadoc.
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*/
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@Test(expected=NullPointerException.class)
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public void testSetValue01() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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resolver.setValue(null, new Object(), new Object(), new Object());
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}
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/**
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* Test replace with create enabled.
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*/
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@Test
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public void testSetValue02() {
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doSetValueCreateReplaceTest(true, BEAN01_NAME);
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}
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/**
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* Test replace with create disabled.
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*/
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@Test
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public void testSetValue03() {
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doSetValueCreateReplaceTest(false, BEAN01_NAME);
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}
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/**
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* Test create with create enabled.
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*/
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@Test
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public void testSetValue04() {
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doSetValueCreateReplaceTest(true, BEAN99_NAME);
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}
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/**
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* Test create with create disabled.
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*/
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@Test
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public void testSetValue05() {
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doSetValueCreateReplaceTest(false, BEAN99_NAME);
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}
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/**
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* Test replacing a read-only bean with create enabled.
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*/
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@Test(expected=PropertyNotWritableException.class)
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public void testSetValue06() {
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doSetValueCreateReplaceTest(true,
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TesterBeanNameResolver.READ_ONLY_NAME);
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}
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/**
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* Test replacing a read-only bean with create disable.
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*/
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@Test(expected=PropertyNotWritableException.class)
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public void testSetValue07() {
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doSetValueCreateReplaceTest(false,
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TesterBeanNameResolver.READ_ONLY_NAME);
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}
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/**
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* Exception during resolution should be wrapped and re-thrown.
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*/
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@Test
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public void testSetValue08() {
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doThrowableTest(TesterBeanNameResolver.EXCEPTION_TRIGGER_NAME,
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MethodUnderTest.SET_VALUE);
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}
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/**
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* Throwable during resolution should be wrapped and re-thrown.
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*/
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@Test
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public void testSetValue09() {
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doThrowableTest(TesterBeanNameResolver.THROWABLE_TRIGGER_NAME,
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MethodUnderTest.SET_VALUE);
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}
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/**
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* Tests that a null context results in an NPE as per EL Javadoc.
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*/
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@Test(expected=NullPointerException.class)
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public void testGetType01() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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resolver.getType(null, new Object(), new Object());
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}
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/**
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* Tests that a valid bean is resolved.
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*/
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@Test
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public void testGetType02() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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Class<?> result = resolver.getType(context, null, BEAN01_NAME);
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Assert.assertEquals(BEAN01.getClass(), result);
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Assert.assertTrue(context.isPropertyResolved());
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}
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/**
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* Tests that a valid bean is not resolved if base is non-null.
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*/
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@Test
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public void testGetType03() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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Class<?> result = resolver.getType(context, new Object(), BEAN01_NAME);
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Assert.assertNull(result);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Tests that a valid bean is not resolved if property is not a String even
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* if it can be coerced to a valid bean name.
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*/
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@Test
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public void testGetType04() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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Object property = new Object() {
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@Override
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public String toString() {
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return BEAN01_NAME;
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}
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};
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Class<?> result = resolver.getType(context, null, property);
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Assert.assertNull(result);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Beans that don't exist shouldn't return anything
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*/
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@Test
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public void testGetType05() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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Class<?> result = resolver.getType(context, null, BEAN99_NAME);
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Assert.assertNull(result);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Exception during resolution should be wrapped and re-thrown.
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*/
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@Test
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public void testGetType06() {
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doThrowableTest(TesterBeanNameResolver.EXCEPTION_TRIGGER_NAME,
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MethodUnderTest.GET_TYPE);
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}
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/**
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* Throwable during resolution should be wrapped and re-thrown.
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*/
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@Test
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public void testGetType07() {
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doThrowableTest(TesterBeanNameResolver.THROWABLE_TRIGGER_NAME,
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MethodUnderTest.GET_TYPE);
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}
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/**
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* Tests that a null context results in an NPE as per EL Javadoc.
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*/
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@Test(expected=NullPointerException.class)
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public void testIsReadOnly01() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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resolver.isReadOnly(null, new Object(), new Object());
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}
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/**
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* Tests that a writable bean is reported as writable.
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*/
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@Test
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public void testIsReadOnly02() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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boolean result = resolver.isReadOnly(context, null, BEAN01_NAME);
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Assert.assertFalse(result);
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Assert.assertTrue(context.isPropertyResolved());
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}
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/**
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* Tests that a read-only bean is reported as not writable.
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*/
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@Test
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public void testIsReadOnly03() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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boolean result = resolver.isReadOnly(context, null,
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TesterBeanNameResolver.READ_ONLY_NAME);
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Assert.assertTrue(result);
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Assert.assertTrue(context.isPropertyResolved());
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}
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/**
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* Tests that a valid bean is not resolved if base is non-null.
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*/
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@Test
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public void testIsReadOnly04() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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resolver.isReadOnly(context, new Object(), BEAN01_NAME);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Tests that a valid bean is not resolved if property is not a String even
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* if it can be coerced to a valid bean name.
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*/
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@Test
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public void testIsReadOnly05() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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Object property = new Object() {
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@Override
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public String toString() {
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return BEAN01_NAME;
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}
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};
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resolver.isReadOnly(context, null, property);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Beans that don't exist should not resolve
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*/
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@Test
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public void testIsReadOnly06() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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resolver.isReadOnly(context, null, BEAN99_NAME);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Exception during resolution should be wrapped and re-thrown.
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*/
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@Test
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public void testIsReadOnly07() {
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doThrowableTest(TesterBeanNameResolver.EXCEPTION_TRIGGER_NAME,
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MethodUnderTest.IS_READ_ONLY);
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}
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/**
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* Throwable during resolution should be wrapped and re-thrown.
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*/
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@Test
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public void testIsReadOnly08() {
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doThrowableTest(TesterBeanNameResolver.THROWABLE_TRIGGER_NAME,
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MethodUnderTest.IS_READ_ONLY);
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}
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/**
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* Confirm it returns null for 'valid' input.
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*/
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public void testGetFeatureDescriptors01() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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Object result = resolver.getFeatureDescriptors(context, null);
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Assert.assertNull(result);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Confirm it returns null for invalid input.
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*/
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public void testGetFeatureDescriptors02() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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Object result = resolver.getFeatureDescriptors(null, new Object());
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Assert.assertNull(result);
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}
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/**
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* Confirm it returns String.class for 'valid' input.
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*/
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public void testGetCommonPropertyType01() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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Object result = resolver.getCommonPropertyType(context, null);
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Assert.assertNull(result);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Confirm it returns String.class for invalid input.
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*/
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public void testGetCommonPropertyType02() {
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BeanNameELResolver resolver = createBeanNameELResolver();
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Object result = resolver.getCommonPropertyType(null, new Object());
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Assert.assertNull(result);
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}
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private void doThrowableTest(String trigger, MethodUnderTest method) {
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BeanNameELResolver resolver = createBeanNameELResolver();
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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ELException elException = null;
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try {
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switch (method) {
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case GET_VALUE: {
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resolver.getValue(context, null, trigger);
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break;
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}
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case SET_VALUE: {
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resolver.setValue(context, null, trigger, new Object());
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break;
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}
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case GET_TYPE: {
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resolver.getType(context, null, trigger);
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break;
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}
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case IS_READ_ONLY: {
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resolver.isReadOnly(context, null, trigger);
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break;
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}
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default: {
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// Should never happen
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Assert.fail("Missing case for method");
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}
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}
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} catch (ELException e) {
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elException = e;
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}
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Assert.assertFalse(context.isPropertyResolved());
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Assert.assertNotNull(elException);
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Throwable cause = elException.getCause();
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Assert.assertNotNull(cause);
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}
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/**
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* Tests adding/replacing beans beans
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*/
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private void doSetValueCreateReplaceTest(boolean canCreate,
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String beanName) {
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BeanNameELResolver resolver = createBeanNameELResolver(canCreate);
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ELContext context =
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new StandardELContext(ELManager.getExpressionFactory());
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// Get bean one to be sure it has been replaced when testing replace
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Object bean = resolver.getValue(context, null, BEAN01_NAME);
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Assert.assertTrue(context.isPropertyResolved());
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Assert.assertEquals(BEAN01, bean);
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// Reset context
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context.setPropertyResolved(false);
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// Replace BEAN01
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resolver.setValue(context, null, beanName, BEAN99);
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if (canCreate || BEAN01_NAME.equals(beanName)) {
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Assert.assertTrue(context.isPropertyResolved());
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// Obtain BEAN01 again
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context.setPropertyResolved(false);
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bean = resolver.getValue(context, null, beanName);
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Assert.assertTrue(context.isPropertyResolved());
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Assert.assertEquals(BEAN99, bean);
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} else {
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Assert.assertFalse(context.isPropertyResolved());
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// Obtain BEAN01 again
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context.setPropertyResolved(false);
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bean = resolver.getValue(context, null, BEAN01_NAME);
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Assert.assertTrue(context.isPropertyResolved());
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Assert.assertEquals(BEAN01, bean);
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}
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}
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private enum MethodUnderTest {
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GET_VALUE,
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SET_VALUE,
|
|
GET_TYPE,
|
|
IS_READ_ONLY
|
|
}
|
|
}
|