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+<html>
+<!-- https://bugzilla.mozilla.org/show_bug.cgi?id=495388 -->
+<head>
+  <title>test HTMLTableAccessible::IsProbablyForLayout implementation</title>
+  <link rel="stylesheet" type="text/css"
+        href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+
+  <script type="application/javascript"
+          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+
+  <script type="application/javascript"
+          src="../common.js"></script>
+  <script type="application/javascript"
+          src="../attributes.js"></script>
+
+  <script type="application/javascript">
+    function doTest()
+    {
+      // Attribute we're looking for
+      var attr = {
+        "layout-guess": "true"
+      };
+
+      // table with role of grid
+      testAbsentAttrs("table1", attr);
+      // table with role of grid and datatable="0"
+      testAbsentAttrs("table1.1", attr);
+
+      // table with landmark role
+      testAbsentAttrs("table2", attr);
+
+      // table with summary
+      testAbsentAttrs("table3", attr);
+
+      // table with caption
+      testAbsentAttrs("table4", attr);
+
+      // layout table with empty caption
+      testAttrs("table4.2", attr, true);
+
+      // table with thead element
+      testAbsentAttrs("table5", attr);
+
+      // table with tfoot element
+      testAbsentAttrs("table5.1", attr);
+
+      // table with colgroup or col elements
+      testAbsentAttrs("table5.2", attr);
+      testAbsentAttrs("table5.3", attr);
+
+      // table with th element
+      testAbsentAttrs("table6", attr);
+
+      // table with headers attribute
+      testAbsentAttrs("table6.2", attr);
+
+      // table with scope attribute
+      testAbsentAttrs("table6.2.2", attr);
+
+      // table with abbr attribute
+      testAbsentAttrs("table6.2.3", attr);
+
+      // table with abbr element
+      testAbsentAttrs("table6.3", attr);
+
+      // table with abbr element having empty text node
+      testAbsentAttrs("table6.4", attr);
+
+      // table with abbr element and non-empty text node 
+      testAttrs("table6.5", attr, true);
+
+      // layout table with nested table
+      testAttrs("table9", attr, true);
+
+      // layout table with 1 column
+      testAttrs("table10", attr, true);
+
+      // layout table with 1 row
+      testAttrs("table11", attr, true);
+
+      // table with 5 columns
+      testAbsentAttrs("table12", attr);
+
+      // table with a bordered cell
+      testAbsentAttrs("table13", attr);
+
+      // table with alternating row background colors
+      testAbsentAttrs("table14", attr);
+
+      // table with 3 columns and 21 rows
+      testAbsentAttrs("table15", attr);
+
+      // layout table that has a 100% width
+      testAttrs("table16", attr, true);
+
+      // layout table that has a 95% width in pixels
+      testAttrs("table17", attr, true);
+
+      // layout table with less than 10 columns
+      testAttrs("table18", attr, true);
+
+      // layout table with embedded iframe
+      testAttrs("table19", attr, true);
+
+      // tree grid, no layout table
+      testAbsentAttrs("table20", attr);
+
+      // layout table containing nested data table (having data structures)
+      testAttrs("table21", attr, true);
+      testAttrs("table21.2", attr, true);
+      testAttrs("table21.3", attr, true);
+      testAttrs("table21.4", attr, true);
+      testAttrs("table21.5", attr, true);
+      testAttrs("table21.6", attr, true);
+
+      // layout table having datatable="0" attribute and containing data table structure (tfoot element)
+      testAttrs("table22", attr, true);
+
+      SimpleTest.finish();
+    }
+
+    SimpleTest.waitForExplicitFinish();
+    addA11yLoadEvent(doTest);
+  </script>
+</head>
+<body>
+
+  <a target="_blank"
+     href="https://bugzilla.mozilla.org/show_bug.cgi?id=495388"
+     title="Don't treat tables that have a landmark role as layout table">
+    Mozilla Bug 495388
+  </a>
+  <a target="_blank"
+     href="https://bugzilla.mozilla.org/show_bug.cgi?id=690222"
+     title="Data table elements used to determine layout-guess attribute shouldn't be picked from nested tables">
+    Mozilla Bug 690222
+  </a>
+  <a target="_blank"
+     href="https://bugzilla.mozilla.org/show_bug.cgi?id=696975"
+     title="Extend the list of legitimate data table structures">
+    Mozilla Bug 696975
+  </a>
+
+  <p id="display"></p>
+  <div id="content" style="display: none"></div>
+  <pre id="test">
+  </pre>
+
+  <!-- Table with role of grid -->
+  <table id="table1" role="grid">
+    <tr>
+      <th>Sender</th>
+      <th>Subject</th>
+      <th>Date</th>
+    </tr>
+    <tr>
+      <td>Marco</td>
+      <td>Test</td>
+      <td>June 12</td>
+    </tr>
+    <tr>
+      <td>David</td>
+      <td>Another test</td>
+      <td>June 12</td>
+    </tr>
+    <tr>
+      <td>Alex</td>
+      <td>Third test</td>
+      <td>June 12</td>
+    </tr>
+  </table>
+   <!-- table with role of grid and datatable="0"-->
+  <table id="table1.1" role="grid" datatable="0">
+    <tr>
+      <td>Cell1</td><td>cell2</td>
+    </tr>
+  </table>
+
+  <!-- table with landmark role -->
+  <table id="table2" role="main">
+    <tr>
+      <th>Sender</th>
+      <th>Subject</th>
+      <th>Date</th>
+    </tr>
+    <tr>
+      <td>Marco</td>
+      <td>Test</td>
+      <td>June 12</td>
+    </tr>
+    <tr>
+      <td>David</td>
+      <td>Another test</td>
+      <td>June 12</td>
+    </tr>
+    <tr>
+      <td>Alex</td>
+      <td>Third test</td>
+      <td>June 12</td>
+    </tr>
+  </table>
+
+  <!-- table with summary -->
+  <table id="table3" summary="This is a table">
+    <tr>
+      <td>Cell1</td><td>cell2</td>
+    </tr>
+  </table>
+
+  <!-- table with caption -->
+  <table id="table4">
+    <caption>This is a table</caption>
+    <tr>
+      <td>Cell1</td><td>cell2</td>
+    </tr>
+  </table>
+
+  <!-- layout table with empty caption -->
+  <table id="table4.2">
+    <caption> </caption>
+    <tr>
+      <td>Cell1</td><td>cell2</td>
+    </tr>
+  </table>
+
+  <!-- table with thead element -->
+  <table id="table5">
+    <thead>
+      <tr>
+        <td>Cell1</td><td>cell2</td>
+      </tr>
+    </thead>
+  </table>
+
+  <!-- table with tfoot element -->
+  <table id="table5.1">
+    <tfoot>
+      <tr>
+        <td>Cell1</td><td>cell2</td>
+      </tr>
+    </tfoot>
+  </table>
+
+  <!-- table with colgroup and col elements -->
+  <table id="table5.2">
+    <colgroup width="20"></colgroup>
+    <tr>
+      <td>Cell1</td><td>cell2</td>
+    </tr>
+  </table>
+  <table id="table5.3">
+    <col width="20">
+    <tr>
+      <td>Cell1</td><td>cell2</td>
+    </tr>
+  </table>
+
+  <!-- table with th element -->
+  <table id="table6">
+    <tr>
+      <th>Cell1</th><th>cell2</th>
+    </tr>
+  </table>
+
+  <!-- table with headers attribute -->
+  <table id="table6.2">
+    <tr>
+      <td headers="a">table6.2 cell</td>
+    </tr>
+  </table>
+
+  <!-- table with scope attribute -->
+  <table id="table6.2.2">
+    <tr>
+      <td scope="a">table6.2.2 cell</td>
+    </tr>
+  </table>
+
+  <!-- table with abbr attribute -->
+  <table id="table6.2.3">
+    <tr>
+      <td abbr="table6.2.3">table6.2.3 cell1</td>
+    </tr>
+  </table>
+
+  <!-- table with abbr element -->
+  <table id="table6.3">
+    <tr>
+      <td>table6.3 cell1</td>
+      <td><abbr>table6.3 cell2</abbr></td>
+    </tr>
+  </table>
+
+  <!-- table with abbr element having empty text node -->
+  <table id="table6.4">
+    <tr>
+      <td>
+        <abbr>abbr</abbr>
+      </td>
+    </tr>
+  </table>
+
+  <!-- table with abbr element and non-empty text node -->
+  <table id="table6.5">
+    <tr>
+      <td>
+        This is a really long text (<abbr>tiarlt</abbr>) inside layout table 
+      </td>
+    </tr>
+  </table>
+
+  <!-- layout table with nested table -->
+  <table id="table9">
+    <tr>
+      <td><table><tr><td>Cell</td></tr></table></td>
+    </tr>
+  </table>
+
+  <!-- layout table with 1 column -->
+  <table id="table10">
+    <tr><td>Row1</td></tr>
+    <tr><td>Row2</td></tr>
+  </table>
+
+  <!-- layout table with 1 row and purposely many columns -->
+  <table id="table11">
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td><td>Col4</td><td>Col5</td></tr>
+  </table>
+
+  <!-- table with 5 columns -->
+  <table id="table12">
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td><td>Col4</td><td>Col5</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td><td>Col4</td><td>Col5</td></tr>
+  </table>
+
+  <!-- table with a bordered cell -->
+  <table id="table13" border="1" width="100%" bordercolor="#0000FF">
+    <tr>
+      <td bordercolor="#000000"> </td>
+      <td bordercolor="#000000"> </td>
+      <td bordercolor="#000000"> </td>
+    </tr>
+    <tr>
+      <td bordercolor="#000000"> </td>
+      <td bordercolor="#000000"> </td>
+      <td bordercolor="#000000"> </td>
+    </tr>
+  </table> 
+
+  <!-- table with alternating row background colors -->
+  <table id="table14" width="100%">
+    <tr style="background-color: #0000FF;">
+      <td> </td>
+      <td> </td>
+      <td> </td>
+    </tr>
+    <tr style="background-color: #00FF00;">
+      <td> </td>
+      <td> </td>
+      <td> </td>
+    </tr>
+  </table> 
+
+  <!-- table with 3 columns and 21 rows -->
+  <table id="table15" border="0">
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+  </table>
+
+  <!-- layout table that has a 100% width -->
+  <table id="table16" width="100%">
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+  </table>
+
+  <!-- layout table that has a 95% width in pixels -->
+  <table id="table17" width="98%">
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+    <tr><td>Col1</td><td>Col2</td><td>Col3</td></tr>
+  </table>
+
+  <!-- layout table with less than 10 columns -->
+  <table id="table18">
+    <tr>
+      <td>Marco</td>
+      <td>Test</td>
+      <td>June 12</td>
+    </tr>
+    <tr>
+      <td>David</td>
+      <td>Another test</td>
+      <td>June 12</td>
+    </tr>
+    <tr>
+      <td>Alex</td>
+      <td>Third test</td>
+      <td>June 12</td>
+    </tr>
+  </table>
+
+  <!-- layout table with embedded iframe -->
+  <table id="table19">
+    <tr><td><iframe id="frame"></iframe></td><td> </td><td> </td></tr>
+    <tr><td> </td><td> </td><td> </td></tr>
+    <tr><td> </td><td> </td><td> </td></tr>
+    <tr><td> </td><td> </td><td> </td></tr>
+  </table>
+
+  <!-- tree grid, no layout table -->
+  <table id="table20" role="treegrid">
+    <tr role="treeitem"><td>Cell1</td><td>Cell2</td></tr>
+  </table>
+
+  <!-- layout table with nested data table containing data table elements -->
+  <table id="table21">
+    <tr>
+      <td>
+        <table>
+          <caption>table</caption>
+          <tr><td>Cell</td></tr>
+        </table>
+      </td>
+    </tr>
+  </table>
+  <table id="table21.2">
+    <tr>
+      <td>
+        <table>
+          <colgroup width="20"></colgroup>
+          <tr><th>Cell</th></tr>
+        </table>
+      </td>
+    </tr>
+  </table>
+  <table id="table21.3">
+    <tr>
+      <td>
+        <table>
+          <col width="20"></col>
+          <tr><th>Cell</th></tr>
+        </table>
+      </td>
+    </tr>
+  </table>
+  <table id="table21.4">
+    <tr>
+      <td>
+        <table>
+          <tr><th>Cell</th></tr>
+        </table>
+      </td>
+    </tr>
+  </table>
+  <table id="table21.5">
+    <tr>
+      <td>
+        <table>
+          <thead>
+            <tr><td>Cell</td></tr>
+          </thead>
+        </table>
+      </td>
+    </tr>
+  </table>
+  <table id="table21.6">
+    <tr>
+      <td>
+        <table>
+          <tfoot>
+            <tr><td>Cell</td></tr>
+          </tfoot>
+        </table>
+      </td>
+    </tr>
+  </table>
+
+  <!-- layout table with datatable="0" and tfoot element-->
+  <table id="table22" datatable="0">
+    <tfoot>
+      <tr>
+        <td>Cell1</td><td>cell2</td>
+      </tr>
+    </tfoot>
+  </table>
+
+</body>
+</html>