319 lines
10 KiB
Java
319 lines
10 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 java.beans.FeatureDescriptor;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map;
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import org.junit.Assert;
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import org.junit.Test;
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public class TestMapELResolver {
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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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MapELResolver mapELResolver = new MapELResolver();
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mapELResolver.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 Map.
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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 a valid property is resolved.
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*/
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@Test
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public void testGetType03() {
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MapELResolver mapELResolver = new MapELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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Class<?> result = mapELResolver.getType(context, new HashMap<>(),
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"test");
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Assert.assertEquals(Object.class, 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 testGetValue01() {
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MapELResolver mapELResolver = new MapELResolver();
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mapELResolver.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 Map.
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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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MapELResolver mapELResolver = new MapELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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Map<String, String> map = new HashMap<>();
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map.put("key", "value");
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Object result = mapELResolver.getValue(context, map, "key");
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Assert.assertEquals("value", result);
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Assert.assertTrue(context.isPropertyResolved());
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result = mapELResolver.getValue(context, map, "unknown-key");
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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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MapELResolver mapELResolver = new MapELResolver();
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mapELResolver.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 Map.
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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 when readOnly is true.
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*/
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@Test(expected = PropertyNotWritableException.class)
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public void testSetValue03() {
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MapELResolver mapELResolver = new MapELResolver(true);
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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mapELResolver.setValue(context, new HashMap<>(), new Object(),
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new Object());
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}
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/**
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* Tests that a valid property is set.
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*/
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@Test
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public void testSetValue04() {
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MapELResolver mapELResolver = new MapELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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Map<String, String> map = new HashMap<>();
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mapELResolver.setValue(context, map, "key", "value");
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Assert.assertEquals("value",
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mapELResolver.getValue(context, map, "key"));
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Assert.assertTrue(context.isPropertyResolved());
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}
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/**
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* Tests that an exception is thrown when the map is not modifiable.
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*/
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@Test(expected = PropertyNotWritableException.class)
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public void testSetValue05() {
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MapELResolver mapELResolver = new MapELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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Map<Object, Object> map = Collections.unmodifiableMap(new HashMap<>());
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mapELResolver.setValue(context, map, "key", "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 testIsReadOnly01() {
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MapELResolver mapELResolver = new MapELResolver();
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mapELResolver.isReadOnly(null, new Object(), new Object());
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}
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/**
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* Tests that the propertyResolved is false if base is not Map.
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*/
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@Test
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public void testIsReadOnly02() {
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MapELResolver mapELResolver = new MapELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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boolean result = mapELResolver.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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mapELResolver = new MapELResolver(true);
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result = mapELResolver.isReadOnly(context, new Object(), new Object());
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Assert.assertTrue(result);
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Assert.assertFalse(context.isPropertyResolved());
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}
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/**
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* Tests that if the MapELResolver is constructed with readOnly the method
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* will return always true, otherwise false.
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*/
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@Test
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public void testIsReadOnly03() {
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MapELResolver mapELResolver = new MapELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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boolean result = mapELResolver.isReadOnly(context, new HashMap<>(),
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new Object());
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Assert.assertFalse(result);
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Assert.assertTrue(context.isPropertyResolved());
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mapELResolver = new MapELResolver(true);
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result = mapELResolver.isReadOnly(context, new HashMap<>(),
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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 the readOnly is true always when the map is not modifiable.
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*/
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@Test
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public void testIsReadOnly04() {
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MapELResolver mapELResolver = new MapELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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Map<Object, Object> map = Collections.unmodifiableMap(new HashMap<>());
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boolean result = mapELResolver.isReadOnly(context, map, 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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* Map.
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*/
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@Test
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public void testGetFeatureDescriptors01() {
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MapELResolver mapELResolver = new MapELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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Iterator<FeatureDescriptor> result = mapELResolver
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.getFeatureDescriptors(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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MapELResolver mapELResolver = new MapELResolver();
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ELContext context = new StandardELContext(
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ELManager.getExpressionFactory());
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Map<String, String> map = new HashMap<>();
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map.put("key", "value");
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Iterator<FeatureDescriptor> result = mapELResolver
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.getFeatureDescriptors(context, map);
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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("key".getClass(),
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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 void doNegativeTest(Object base, Object trigger,
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MethodUnderTest method, boolean checkResult) {
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MapELResolver resolver = new MapELResolver();
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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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