1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.myfaces.view.jsp;
20
21 import java.io.IOException;
22
23 import javax.faces.component.UIViewRoot;
24 import javax.faces.context.FacesContext;
25
26 import org.apache.myfaces.test.base.AbstractJsfTestCase;
27
28 /**
29 * Test class for JspViewDeclarationLanguage.
30 *
31 * @author Jakob Korherr (latest modification by $Author: jakobk $)
32 * @version $Revision: 936293 $ $Date: 2010-04-21 08:12:35 -0500 (Wed, 21 Apr 2010) $
33 */
34 public class JspViewDeclarationLanguageTest extends AbstractJsfTestCase
35 {
36
37 private TrackingJspViewDeclarationLanguage jspVdl;
38
39 public JspViewDeclarationLanguageTest(String name)
40 {
41 super(name);
42 }
43
44 @Override
45 protected void setUp() throws Exception
46 {
47 super.setUp();
48
49 jspVdl = new TrackingJspViewDeclarationLanguage();
50 }
51
52 @Override
53 protected void tearDown() throws Exception
54 {
55 jspVdl = null;
56
57 super.tearDown();
58 }
59
60 /**
61 * Tests if renderView() implicitly calls buildView() if there was no call
62 * to buildView() for the given UIViewRoot yet. This is needed in order to
63 * support legacy ViewHandlers which return null on getViewDeclarationLanguage()
64 * and thus vdl.buildView() was not called yet when renderView() is invoked.
65 */
66 public void testBuildViewCalledBeforeViewRendered()
67 {
68 try
69 {
70 jspVdl.renderView(facesContext, facesContext.getViewRoot());
71 }
72 catch (Exception e)
73 {
74 // we're not testing the real behavior here, so Exceptions may occur
75 }
76
77 // assert that buildView() was implicitly called once (by renderView())
78 assertEquals(1, jspVdl._buildViewCalled);
79 }
80
81 /**
82 * Tests if buildView() is not called twice if it has already been called
83 * before renderView() is invoked.
84 * This test is related to testBuildViewCalledBeforeViewRendered.
85 */
86 public void testBuildViewNotCalledTwiceInRenderView()
87 {
88 try
89 {
90 jspVdl.buildView(facesContext, facesContext.getViewRoot());
91 }
92 catch (Exception e)
93 {
94 // we're not testing the real behavior here, so Exceptions may occur
95 }
96 try
97 {
98 jspVdl.renderView(facesContext, facesContext.getViewRoot());
99 }
100 catch (Exception e)
101 {
102 // we're not testing the real behavior here, so Exceptions may occur
103 }
104
105 // assert that buildView() was only called once
106 assertEquals(1, jspVdl._buildViewCalled);
107 }
108
109 /**
110 * Tests if the direct/implicit calls to builView() work correctly
111 * for different views.
112 * This test is related to testBuildViewCalledBeforeViewRendered
113 * and testBuildViewNotCalledTwiceInRenderView.
114 */
115 public void testBuildViewRenderViewContractForDifferentViews()
116 {
117 UIViewRoot firstView = facesContext.getViewRoot();
118 UIViewRoot secondView = new UIViewRoot();
119
120 try
121 {
122 jspVdl.buildView(facesContext, firstView);
123 }
124 catch (Exception e)
125 {
126 // we're not testing the real behavior here, so Exceptions may occur
127 }
128 try
129 {
130 jspVdl.renderView(facesContext, firstView);
131 }
132 catch (Exception e)
133 {
134 // we're not testing the real behavior here, so Exceptions may occur
135 }
136 try
137 {
138 jspVdl.renderView(facesContext, secondView);
139 }
140 catch (Exception e)
141 {
142 // we're not testing the real behavior here, so Exceptions may occur
143 }
144
145 // assert that buildView() was called twice:
146 // the first time directly by jspVdl.buildView() for firstView
147 // the second time implicitly by jspVdl.renderView() for secondView
148 assertEquals(2, jspVdl._buildViewCalled);
149 }
150
151
152 /**
153 * Extends JspViewDeclarationLanguage to count the calls to buildView().
154 *
155 * @author Jakob Korherr
156 */
157 private class TrackingJspViewDeclarationLanguage extends JspViewDeclarationLanguage
158 {
159
160 private int _buildViewCalled = 0;
161
162 @Override
163 public void buildView(FacesContext context, UIViewRoot view)
164 throws IOException
165 {
166 _buildViewCalled++;
167
168 super.buildView(context, view);
169 }
170
171 }
172
173 }