gecko-dev/layout/xul/test/test_windowminmaxsize.xul

<?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="Window Minimum and Maximum Size Tests" onload="nextTest()"
        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">

  <script type="application/javascript" 
          src="chrome://mochikit/content/MochiKit/packed.js"/>
  <script type="application/javascript"
          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
  <script type="application/javascript"
          src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"/>

<panel id="panel" onpopupshown="doPanelTest(this)" onpopuphidden="nextPopupTest(this)"
       align="start" pack="start" style="-moz-appearance: none; margin: 0; border: 0; padding: 0;">
  <resizer id="popupresizer" dir="bottomright" flex="1" width="60" height="60"
           style="-moz-appearance: none; margin: 0; border: 0; padding: 0;"/>
</panel>

<script>
<![CDATA[

SimpleTest.waitForExplicitFinish();

var gTestId = -1;

var prefix = "data:application/vnd.mozilla.xul+xml,<?xml-stylesheet href='chrome://global/skin' type='text/css'?><window " +
             "xmlns='http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul' " +
             "align='start' pack='start' style='-moz-appearance: none; margin: 0; padding: 0; border: 0; ";
var suffix = "><resizer dir='bottomright' flex='1' width='150' height='150' style='-moz-appearance: none; margin: 0; border: 0; padding: 0;'/></window>";
var titledpanel = "<panel noautohide='true' titlebar='normal' minwidth='120' minheight='140'/><label value='Test'/>";

// width and height in the tests below specify the expected size of the window.
// note, win8 has a minimum inner window size of around 122 pixels. Don't go below this on min-width tests.
var tests = [
  { testname: "unconstrained",
    style: "", attrs: "",
    width: 150, height: 150 },
  { testname: "constraint min style",
    style: "min-width: 180px; min-height: 210px;", attrs: "",
    width: 180, height: 210 },
  { testname: "constraint max style",
    style: "max-width: 125px; max-height: 140px;", attrs: "",
    width: 125, height: 140 },
  { testname: "constraint min attributes",
    style: "", attrs: "minwidth='240' minheight='220'",
    width: 240, height: 220 },
  { testname: "constraint min attributes with width and height set",
    style: "", attrs: "width='190' height='220' minwidth='215' minheight='235'",
    width: 215, height: 235 },
  { testname: "constraint max attributes",
    style: "", attrs: "maxwidth='125' maxheight='95'",
    width: 125, height: 95 },
  // this gets the inner width as <window minwidth='210'> makes the box 210 pixels wide
  { testname: "constraint min width attribute only",
    style: "", attrs: "minwidth='210'",
    width: 210, height: 150 },
  { testname: "constraint max width attribute only",
    style: "", attrs: "maxwidth='128'",
    width: 128, height: 150 },
  { testname: "constraint max width attribute with minheight",
    style: "", attrs: "maxwidth='195' width='230' height='120' minheight='180'",
    width: 195, height: 180 },
  { testname: "constraint minwidth, minheight, maxwidth and maxheight set",
    style: "", attrs: "minwidth='120' maxwidth='480' minheight='110' maxheight='470'",
    width: 150, height: 150, last: true }
];

var popupTests = [
  { testname: "popup unconstrained",
    width: 60, height: 60
  },
  { testname: "popup with minimum size",
    minwidth: 150, minheight: 180,
    width: 150, height: 180
  },
  { testname: "popup with maximum size",
    maxwidth: 50, maxheight: 45,
    width: 50, height: 45,
  },
  { testname: "popup with minimum and size",
    minwidth: 80, minheight: 70, maxwidth: 250, maxheight: 220,
    width: 80, height: 70, last: true
  }
];

function nextTest()
{
  // Run through each of the tests above by opening a simple window with
  // the attributes or style defined for that test. The comparisons will be
  // done by windowOpened. gTestId holds the index into the tests array.
  if (++gTestId >= tests.length) {
    // Now do the popup tests
    gTestId = -1;
    SimpleTest.waitForFocus(function () { nextPopupTest(document.getElementById("panel")) } );
  }
  else {
    tests[gTestId].window = window.open(prefix + tests[gTestId].style + "' " + tests[gTestId].attrs + suffix, "_blank", "chrome,resizable=yes");
    SimpleTest.waitForFocus(windowOpened, tests[gTestId].window);
  }
}

function windowOpened(otherWindow)
{
  // Check the width and the width plus one due to bug 696746.
  ok(otherWindow.innerWidth == tests[gTestId].width ||
     otherWindow.innerWidth == tests[gTestId].width + 1,
    tests[gTestId].testname + " width of " + otherWindow.innerWidth + " matches " + tests[gTestId].width);
  is(otherWindow.innerHeight, tests[gTestId].height, tests[gTestId].testname + " height");

  // On the last test, try moving the resizer to a size larger than the maximum
  // and smaller than the minimum. This test is only done on Mac as the other
  // platforms use native resizing.
  if ('last' in tests[gTestId] && (navigator.platform.indexOf("Mac") == 0)) {
    var resizer = otherWindow.document.documentElement.firstChild;
    synthesizeMouse(resizer, 4, 4, { type:"mousedown" }, otherWindow);
    synthesizeMouse(resizer, 800, 800, { type:"mousemove" }, otherWindow);
    is(otherWindow.innerWidth, 480, "Width after maximum resize");
    is(otherWindow.innerHeight, 470, "Height after maximum resize");

    synthesizeMouse(resizer, -100, -100, { type:"mousemove" }, otherWindow);
    is(otherWindow.innerWidth, 120, "Width after minimum resize");
    is(otherWindow.innerHeight, 110, "Height after minimum resize");

    synthesizeMouse(resizer, 4, 4, { type:"mouseup" }, otherWindow);

    // Change the minimum and maximum size and try resizing the window again.
    otherWindow.document.documentElement.minWidth = 140;
    otherWindow.document.documentElement.minHeight = 130;
    otherWindow.document.documentElement.maxWidth = 380;
    otherWindow.document.documentElement.maxHeight = 360;

    synthesizeMouse(resizer, 4, 4, { type:"mousedown" }, otherWindow);
    synthesizeMouse(resizer, 800, 800, { type:"mousemove" }, otherWindow);
    is(otherWindow.innerWidth, 380, "Width after changed maximum resize");
    is(otherWindow.innerHeight, 360, "Height after changed maximum resize");

    synthesizeMouse(resizer, -100, -100, { type:"mousemove" }, otherWindow);
    is(otherWindow.innerWidth, 140, "Width after changed minimum resize");
    is(otherWindow.innerHeight, 130, "Height after changed minimum resize");

    synthesizeMouse(resizer, 4, 4, { type:"mouseup" }, otherWindow);
  }

  otherWindow.close();
  nextTest();
}

function doPanelTest(panel)
{
  var rect = panel.getBoundingClientRect();
  is(rect.width, popupTests[gTestId].width, popupTests[gTestId].testname + " width");
  is(rect.height, popupTests[gTestId].height, popupTests[gTestId].testname + " height");

  if ('last' in popupTests[gTestId]) {
    var resizer = document.getElementById("popupresizer");
    synthesizeMouse(resizer, 4, 4, { type:"mousedown" });
    synthesizeMouse(resizer, 800, 800, { type:"mousemove" });

    rect = panel.getBoundingClientRect();
    is(rect.width, 250, "Popup width after maximum resize");
    is(rect.height, 220, "Popup height after maximum resize");

    synthesizeMouse(resizer, -100, -100, { type:"mousemove" });

    rect = panel.getBoundingClientRect();
    is(rect.width, 80, "Popup width after minimum resize");
    is(rect.height, 70, "Popup height after minimum resize");

    synthesizeMouse(resizer, 4, 4, { type:"mouseup" });
  }

  panel.hidePopup();
}

function nextPopupTest(panel)
{
  if (++gTestId >= popupTests.length) {
    // Next, check a panel that has a titlebar to ensure that it is accounted for
    // properly in the size.
    var titledPanelWindow = window.open(prefix + "'>" + titledpanel + "</window>", "_blank", "chrome,resizable=yes");
    SimpleTest.waitForFocus(titledPanelWindowOpened, titledPanelWindow);
  }
  else {
    function setattr(attr) {
      if (attr in popupTests[gTestId])
        panel.setAttribute(attr, popupTests[gTestId][attr]);
      else
        panel.removeAttribute(attr);
    }
    setattr("minwidth");
    setattr("minheight");
    setattr("maxwidth");
    setattr("maxheight");

    // Remove the flexibility as it causes the resizer to not shrink down
    // when resizing.
    if ("last" in popupTests[gTestId])
      document.getElementById("popupresizer").removeAttribute("flex");

    panel.openPopup();
  }
}

function titledPanelWindowOpened(panelwindow)
{
  var panel = panelwindow.document.documentElement.firstChild;
  panel.openPopup();
  panel.addEventListener("popupshown", function() doTitledPanelTest(panel), false);
  panel.addEventListener("popuphidden", function() done(panelwindow), false);
}

function doTitledPanelTest(panel)
{
  var rect = panel.getBoundingClientRect();
  is(rect.width, 120, "panel with titlebar width");
  is(rect.height, 140, "panel with titlebar height");
  panel.hidePopup();
}

function done(panelwindow)
{
  panelwindow.close();
  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>