test_menulist_null_value.xhtml

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<?xml version="1.0"?>

<?xml-stylesheet href="chrome://global/skin" type="text/css"?>

<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>

<window title="Menulist value property"

  onload="setTimeout(runTests, 0);"

  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">

  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"></script>

<menulist id="list">

  <menupopup>

    <menuitem id="i0" label="Zero" value="0"/>

    <menuitem id="i1" label="One" value="item1"/>

    <menuitem id="i2" label="Two" value="item2"/>

    <menuitem id="ifalse" label="False" value="false"/>

    <menuitem id="iempty" label="Empty" value=""/>

  </menupopup>

</menulist>

<script class="testbody" type="application/javascript">

<![CDATA[

SimpleTest.waitForExplicitFinish();

function runTests()

  var list = document.getElementById("list");

  list.value = "item2";

  is(list.value, "item2", "Check list value after setting value");

  is(list.getAttribute("label"), "Two", "Check list label after setting value");

  list.selectedItem = null;

  is(list.value, "", "Check list value after setting selectedItem to null");

  is(list.getAttribute("label"), null, "Check list label after setting selectedItem to null");

  // select something again to make sure the label is not already empty

  list.selectedIndex = 1;

  is(list.value, "item1", "Check list value after setting selectedIndex");

  is(list.getAttribute("label"), "One", "Check list label after setting selectedIndex");

  // check that an item can have the "false" value

  list.value = false;

  is(list.value, "false", "Check list value after setting it to false");

  is(list.getAttribute("label"), "False", "Check list labem after setting value to false");

  // check that an item can have the "0" value

  list.value = 0;

  is(list.value, "0", "Check list value after setting it to 0");

  is(list.getAttribute("label"), "Zero", "Check list label after setting value to 0");

  // check that an item can have the empty string value.

  list.value = "";

  is(list.value, "", "Check list value after setting it to an empty string");

  is(list.getAttribute("label"), "Empty", "Check list label after setting value to an empty string");

  // select something again to make sure the label is not already empty

  list.selectedIndex = 1;

  // set the value to null and test it (bug 408940)

  list.value = null;

  is(list.value, "", "Check list value after setting value to null");

  is(list.getAttribute("label"), null, "Check list label after setting value to null");

  // select something again to make sure the label is not already empty

  list.selectedIndex = 1;

  // set the value to undefined and test it (bug 408940)

  list.value = undefined;

  is(list.value, "", "Check list value after setting value to undefined");

  is(list.getAttribute("label"), null, "Check list label after setting value to undefined");

  // select something again to make sure the label is not already empty

  list.selectedIndex = 1;

  // set the value to something that does not exist in any menuitem of the list

  // and make sure the previous label is removed

  list.value = "this does not exist";

  is(list.value, "this does not exist", "Check the list value after setting it to something not associated witn an existing menuitem");

  is(list.getAttribute("label"), null, "Check that the list label is empty after selecting a nonexistent item");

  SimpleTest.finish();

]]>

</script>

<body xmlns="http://www.w3.org/1999/xhtml">

<p id="display">

</p>

<div id="content" style="display: none">

</div>

<pre id="test">

</pre>

</body>

</window>