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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.css;
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   * Tests for {@link MediaQueryList}.
25   *
26   * @author Ahmed Ashour
27   * @author Ronald Brill
28   */
29  @RunWith(BrowserRunner.class)
30  public class MediaQueryListTest extends WebDriverTestCase {
31  
32      /**
33       * @throws Exception if the test fails
34       */
35      @Test
36      @Alerts("true")
37      public void matches() throws Exception {
38          final String html = DOCTYPE_HTML
39              + "<html><head>\n"
40              + "<script>\n"
41              + LOG_TITLE_FUNCTION
42              + "  function test() {\n"
43              + "    if (window.matchMedia) {\n"
44              + "      log(window.matchMedia('(min-width: 400px)').matches);\n"
45              + "    }\n"
46              + "  }\n"
47              + "</script></head><body onload='test()'>\n"
48              + "</body></html>";
49  
50          loadPageVerifyTitle2(html);
51      }
52  
53      /**
54       * @throws Exception if the test fails
55       */
56      @Test
57      @Alerts({"added", "removed"})
58      public void listener() throws Exception {
59          final String html = DOCTYPE_HTML
60              + "<html><head>\n"
61              + "<script>\n"
62              + LOG_TITLE_FUNCTION
63              + "  function listener(mql) {\n"
64              + "    log(mql);\n"
65              + "  }\n"
66  
67              + "  function test() {\n"
68              + "    if (window.matchMedia) {\n"
69              + "      var mql = window.matchMedia('(min-width: 400px)');\n"
70              + "      mql.addListener(listener);\n"
71              + "      log('added');\n"
72              + "      mql.removeListener(listener);\n"
73              + "      log('removed');\n"
74              + "    }\n"
75              + "  }\n"
76              + "</script></head><body onload='test()'>\n"
77              + "</body></html>";
78  
79          loadPageVerifyTitle2(html);
80      }
81  }