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327
test/javax/el/TestResourceBundleELResolver.java
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327
test/javax/el/TestResourceBundleELResolver.java
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/*
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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 java.beans.FeatureDescriptor;
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import java.util.Enumeration;
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import java.util.Iterator;
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import java.util.ListResourceBundle;
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import java.util.ResourceBundle;
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import org.junit.Assert;
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import org.junit.Test;
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import org.apache.jasper.el.ELContextImpl;
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public class TestResourceBundleELResolver {
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@Test
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public void bug53001() {
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ExpressionFactory factory = ExpressionFactory.newInstance();
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ELContext context = new ELContextImpl(factory);
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ResourceBundle rb = new TesterResourceBundle();
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ValueExpression var = factory.createValueExpression(rb,
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ResourceBundle.class);
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context.getVariableMapper().setVariable("rb", var);
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ValueExpression ve = factory.createValueExpression(context,
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"${rb.keys}", String.class);
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MethodExpression me = factory.createMethodExpression(context,
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"${rb.getKeys()}", Enumeration.class, null);
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// Ensure we are specification compliant
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String result1 = (String) ve.getValue(context);
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Assert.assertEquals("???keys???", result1);
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// Check that the method expression does return the keys
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Object result2 = me.invoke(context, null);
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Assert.assertTrue(result2 instanceof Enumeration);
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@SuppressWarnings("unchecked")
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Enumeration<String> e = (Enumeration<String>) result2;
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Assert.assertTrue(e.hasMoreElements());
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String element = e.nextElement();
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if ("key1".equals(element)) {
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Assert.assertEquals("key1", element);
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Assert.assertTrue(e.hasMoreElements());
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Assert.assertEquals("key2", e.nextElement());
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Assert.assertFalse(e.hasMoreElements());
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} else {
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Assert.assertEquals("key2", element);
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Assert.assertTrue(e.hasMoreElements());
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Assert.assertEquals("key1", e.nextElement());
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Assert.assertFalse(e.hasMoreElements());
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}
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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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ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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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 property is not resolved if base is not
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* ResourceBundle.
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*/
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@Test
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public void testGetValue02() {
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doNegativeTest(new Object(), new Object(), MethodUnderTest.GET_VALUE,
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true);
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}
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/**
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* Tests that a valid property is resolved.
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*/
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@Test
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public void testGetValue03() {
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ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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ResourceBundle resourceBundle = new TesterResourceBundle();
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Object result = resolver.getValue(context, resourceBundle, "key1");
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Assert.assertEquals("value1", result);
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Assert.assertTrue(context.isPropertyResolved());
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result = resolver.getValue(context, resourceBundle, "unknown-key");
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Assert.assertEquals("???unknown-key???", result);
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Assert.assertTrue(context.isPropertyResolved());
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result = resolver.getValue(context, resourceBundle, null);
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Assert.assertNull(result);
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Assert.assertTrue(context.isPropertyResolved());
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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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ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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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 property is not resolved if base is not
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* ResourceBundle.
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*/
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@Test
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public void testGetType02() {
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doNegativeTest(new Object(), new Object(), MethodUnderTest.GET_TYPE,
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true);
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}
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/**
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* Tests that null will be returned when base is ResourceBundle. Checks that
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* the propertyResolved is true.
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*/
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@Test
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public void testGetType03() {
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ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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ResourceBundle resourceBundle = new TesterResourceBundle();
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Class<?> result = resolver.getType(context, resourceBundle, "key1");
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Assert.assertNull(result);
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Assert.assertTrue(context.isPropertyResolved());
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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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ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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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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* Tests that a valid property is not set if base is not ResourceBundle.
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*/
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@Test
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public void testSetValue02() {
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doNegativeTest(new Object(), new Object(), MethodUnderTest.SET_VALUE,
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false);
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}
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/**
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* Tests that an exception is thrown because the resolver is read only.
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*/
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@Test(expected = PropertyNotWritableException.class)
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public void testSetValue03() {
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ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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ResourceBundle resourceBundle = new TesterResourceBundle();
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resolver.setValue(context, resourceBundle, new Object(), new Object());
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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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ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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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 the propertyResolved is false and readOnly is false if base is
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* not ResourceBundle.
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*/
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@Test
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public void testIsReadOnly02() {
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ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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boolean result = resolver.isReadOnly(context, new Object(),
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new Object());
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Assert.assertFalse(result);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Tests that the readOnly is true always when the base is ResourceBundle.
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*/
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@Test
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public void testIsReadOnly03() {
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ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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ResourceBundle resourceBundle = new TesterResourceBundle();
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boolean result = resolver.isReadOnly(context, resourceBundle,
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new Object());
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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 FeatureDescriptors are not returned if base is not
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* ResourceBundle.
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*/
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@Test
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public void testGetFeatureDescriptors01() {
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ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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Iterator<FeatureDescriptor> result = resolver.getFeatureDescriptors(
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context, new Object());
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Assert.assertNull(result);
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}
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/**
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* Tests that a valid FeatureDescriptors are returned.
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*/
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@Test
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public void testGetFeatureDescriptors02() {
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ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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ResourceBundle resourceBundle = new TesterResourceBundle(
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new Object[][] { { "key", "value" } });
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Iterator<FeatureDescriptor> result = resolver.getFeatureDescriptors(
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context, resourceBundle);
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while (result.hasNext()) {
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FeatureDescriptor featureDescriptor = result.next();
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Assert.assertEquals("key", featureDescriptor.getDisplayName());
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Assert.assertEquals("key", featureDescriptor.getName());
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Assert.assertEquals("", featureDescriptor.getShortDescription());
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Assert.assertFalse(featureDescriptor.isExpert());
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Assert.assertFalse(featureDescriptor.isHidden());
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Assert.assertTrue(featureDescriptor.isPreferred());
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Assert.assertEquals(String.class,
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featureDescriptor.getValue(ELResolver.TYPE));
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Assert.assertEquals(Boolean.TRUE, featureDescriptor
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.getValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME));
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}
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}
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private static class TesterResourceBundle extends ListResourceBundle {
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public TesterResourceBundle() {
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this(new Object[][] { { "key1", "value1" }, { "key2", "value2" } });
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}
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public TesterResourceBundle(Object[][] contents) {
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this.contents = contents;
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}
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@Override
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protected Object[][] getContents() {
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return contents;
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}
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private Object[][] contents;
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}
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private void doNegativeTest(Object base, Object trigger,
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MethodUnderTest method, boolean checkResult) {
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ResourceBundleELResolver resolver = new ResourceBundleELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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Object result = null;
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switch (method) {
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case GET_VALUE: {
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result = resolver.getValue(context, base, trigger);
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break;
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}
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case SET_VALUE: {
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resolver.setValue(context, base, trigger, new Object());
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break;
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}
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case GET_TYPE: {
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result = resolver.getType(context, base, 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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if (checkResult) {
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Assert.assertNull(result);
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}
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Assert.assertFalse(context.isPropertyResolved());
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}
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private enum MethodUnderTest {
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GET_VALUE, SET_VALUE, GET_TYPE
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}
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}
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