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