View Javadoc
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.canvas;
16  
17  import org.htmlunit.WebDriverTestCase;
18  import org.htmlunit.junit.BrowserRunner;
19  import org.htmlunit.junit.annotation.Alerts;
20  import org.junit.Test;
21  import org.junit.runner.RunWith;
22  
23  /**
24   * Unit tests for {@link IntersectionObserver}.
25   *
26   * @author Ahmed Ashour
27   * @author Ronald Brill
28   */
29  @RunWith(BrowserRunner.class)
30  public class IntersectionObserverTest extends WebDriverTestCase {
31  
32      /**
33       * @throws Exception if the test fails
34       */
35      @Test
36      @Alerts("true")
37      public void inWindow() throws Exception {
38          final String html = DOCTYPE_HTML
39              + "<html>\n"
40              + "<head>\n"
41              + "  <script>\n"
42              + LOG_TITLE_FUNCTION
43              + "    function test() {\n"
44              + "      log('IntersectionObserver' in window);\n"
45              + "    }\n"
46              + "  </script>\n"
47              + "</head>\n"
48              + "<body onload='test()'>\n"
49              + "</body>\n"
50              + "</html>";
51  
52          loadPageVerifyTitle2(html);
53      }
54  
55      /**
56       * @throws Exception if an error occurs
57       */
58      @Test
59      @Alerts({"function", "function", "function", "function"})
60      public void functions() throws Exception {
61          final String html = DOCTYPE_HTML
62              + "<html><head><script>\n"
63              + LOG_TITLE_FUNCTION
64              + "function test() {\n"
65              + "  if (window.IntersectionObserver) {\n"
66              + "    var callback = function (entries, observer) {};\n"
67              + "    var observer = new IntersectionObserver(callback);\n"
68              + "    log(typeof observer.observe);\n"
69              + "    log(typeof observer.unobserve);\n"
70              + "    log(typeof observer.disconnect);\n"
71              + "    log(typeof observer.takeRecords);\n"
72              + "  } else { log('no IntersectionObserver'); }\n"
73              + "}\n"
74              + "</script>\n"
75              + "</head>\n"
76              + "<body onload='test()'></body>\n"
77              + "</html>";
78  
79          loadPageVerifyTitle2(html);
80      }
81  }