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1   /*
2    * Copyright (c) 2002-2025 Gargoyle Software Inc.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    * https://www.apache.org/licenses/LICENSE-2.0
8    *
9    * Unless required by applicable law or agreed to in writing, software
10   * distributed under the License is distributed on an "AS IS" BASIS,
11   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12   * See the License for the specific language governing permissions and
13   * limitations under the License.
14   */
15  package org.htmlunit.javascript.host.event;
16  
17  import org.htmlunit.WebDriverTestCase;
18  import org.htmlunit.junit.annotation.Alerts;
19  import org.junit.jupiter.api.Test;
20  
21  /**
22   * Tests for {@link BeforeUnloadEvent}.
23   *
24   * @author Frank Danek
25   * @author Ronald Brill
26   */
27  public class BeforeUnloadEventTest extends WebDriverTestCase {
28  
29      private static final String DUMP_EVENT_FUNCTION = "  function dump(event) {\n"
30          + "    if (event) {\n"
31          + "      log(event);\n"
32          + "      log(event.type);\n"
33          + "      log(event.bubbles);\n"
34          + "      log(event.cancelable);\n"
35          + "      log(event.composed);\n"
36          + "      log(event.returnValue);\n"
37          + "    } else {\n"
38          + "      log('no event');\n"
39          + "    }\n"
40          + "  }\n";
41  
42      /**
43       * @throws Exception if the test fails
44       */
45      @Test
46      @Alerts("TypeError")
47      public void create_ctor() throws Exception {
48          final String html = DOCTYPE_HTML
49              + "<html><head><script>\n"
50              + LOG_TITLE_FUNCTION
51              + "  function test() {\n"
52              + "    try {\n"
53              + "      var event = new BeforeUnloadEvent('beforeunload');\n"
54              + "    } catch(e) { logEx(e) }\n"
55              + "  }\n"
56              + "</script></head><body onload='test()'>\n"
57              + "</body></html>";
58  
59          loadPageVerifyTitle2(html);
60      }
61  
62      /**
63       * @throws Exception if the test fails
64       */
65      @Test
66      @Alerts({"[object BeforeUnloadEvent]", "", "false", "false", "false", ""})
67      public void create_createEvent() throws Exception {
68          final String html = DOCTYPE_HTML
69              + "<html><head><script>\n"
70              + LOG_TITLE_FUNCTION
71              + "  function test() {\n"
72              + "    try {\n"
73              + "      var event = document.createEvent('BeforeUnloadEvent');\n"
74              + "      dump(event);\n"
75              + "    } catch(e) { logEx(e); }\n"
76              + "  }\n"
77              + DUMP_EVENT_FUNCTION
78              + "</script></head><body onload='test()'>\n"
79              + "</body></html>";
80  
81          loadPageVerifyTitle2(html);
82      }
83  
84      /**
85       * @throws Exception if the test fails
86       */
87      @Test
88      @Alerts({"[object BeforeUnloadEvent]", "beforeunload", "true", "false", "false", ""})
89      public void initEvent() throws Exception {
90          final String html = DOCTYPE_HTML
91              + "<html><head><script>\n"
92              + LOG_TITLE_FUNCTION
93              + "  function test() {\n"
94              + "    try {\n"
95              + "      var event = document.createEvent('BeforeUnloadEvent');\n"
96              + "      event.initEvent('beforeunload', true, false);\n"
97              + "      dump(event);\n"
98              + "    } catch(e) { logEx(e) }\n"
99              + "  }\n"
100             + DUMP_EVENT_FUNCTION
101             + "</script></head><body onload='test()'>\n"
102             + "</body></html>";
103 
104         loadPageVerifyTitle2(html);
105     }
106 
107     /**
108      * @throws Exception if the test fails
109      */
110     @Test
111     @Alerts({"[object BeforeUnloadEvent]", "beforeunload", "true", "false", "false", ""})
112     public void dispatchEvent() throws Exception {
113         final String html = DOCTYPE_HTML
114             + "<html><head><script>\n"
115             + LOG_TITLE_FUNCTION
116             + "  function test() {\n"
117             + "    try {\n"
118             + "      var event = document.createEvent('BeforeUnloadEvent');\n"
119             + "      event.initEvent('beforeunload', true, false);\n"
120             + "      dispatchEvent(event);\n"
121             + "    } catch(e) { logEx(e); }\n"
122             + "  }\n"
123             + DUMP_EVENT_FUNCTION
124             + "  window.onbeforeunload  = dump;\n"
125             + "</script></head><body onload='test()'>\n"
126             + "</body></html>";
127 
128         loadPageVerifyTitle2(html);
129     }
130 
131     /**
132      * @throws Exception if the test fails
133      */
134     @Test
135     @Alerts({"[object Event]", "beforeunload", "true", "false", "false", "true"})
136     public void dispatchEvent_event() throws Exception {
137         final String html = DOCTYPE_HTML
138             + "<html><head><script>\n"
139             + LOG_TITLE_FUNCTION
140             + "  function test() {\n"
141             + "    try {\n"
142             + "      var event = document.createEvent('Event');\n"
143             + "      event.initEvent('beforeunload', true, false);\n"
144             + "      dispatchEvent(event);\n"
145             + "    } catch(e) { logEx(e); }\n"
146             + "  }\n"
147             + DUMP_EVENT_FUNCTION
148             + "  window.onbeforeunload = dump;\n"
149             + "</script></head><body onload='test()'>\n"
150             + "</body></html>";
151 
152         loadPageVerifyTitle2(html);
153     }
154 
155     /**
156      * @throws Exception if the test fails
157      */
158     @Test
159     @Alerts("supported")
160     public void onBeforeUnload_supported() throws Exception {
161         final String html = DOCTYPE_HTML
162             + "<html><head><script>\n"
163             + LOG_TITLE_FUNCTION
164             + "  function test() {\n"
165             + "    if ('onbeforeunload' in window) { log('supported') }\n"
166             + "  }\n"
167             + "</script></head><body onload='test()'>\n"
168             + "</body></html>";
169 
170         loadPageVerifyTitle2(html);
171     }
172 }