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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /html/rendering/pixel-length-attributes.html - WPT Dashboard Interop Dashboard
<!doctype html>
<meta charset=utf-8>
<!-- Creating iframes is slow in browsers -->
<meta name=timeout content=long>
<title>Test handling of attributes that map to pixel length properties</title>
<link rel="help"
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<body>
<div id="container" style="display: none">
<img id="defaultImg">
<object id="defaultObject"></object>
<input type="image" id="defaultInput"></input>
</div>
<script>
/*
* This test tests
* for various elements and various values.
*/
/*
* Array of input/output pairs. The input is the string to use as the
* attribute value. The output is the string expected as the computed style
* for the relevant CSS property.
*/
const valid_values = [
[ "200", "200px" ],
[ "1007", "1007px" ],
[ " 00523 ", "523px" ],
[ "200.", "200px" ],
[ "200.25", "200px" ],
[ "200.7", "200px" ],
[ "0", "0px" ],
[ "-0", "0px" ],
[ "+0", "0px" ],
[ "+200", "200px" ],
[ "200in", "200px" ],
[ "200.25in", "200px" ],
[ " +200in ", "200px" ],
[ "200%", "200px" ],
[ "200.%", "200px" ],
[ "200.25%", "200px" ],
];
/*
* Array of invalid values. These should lead to the default value of the
* relevant CSS property.
*/
const invalid_values = [
"-200",
"-200px",
" -200",
"+-200",
"-+200",
];
/*
* Array of tests. Each test consists of the following information:
*
* 1) A function to call to create the element to test. This returns a
* 3-element array: The element to set the attribute on, the element to
* compute style on, and a cleanup function to call when done.
* 2) The name of the attribute to set.
* 3) The name of the computed style property to get.
* 4) An element that can be used to determine the fallback style value for
* invalid values.
*/
const tests = [
[ createIframe, "marginwidth", "marginLeft", document.body ],
[ createIframe, "marginwidth", "marginRight", document.body ],
[ createIframe, "marginheight", "marginTop", document.body ],
[ createIframe, "marginheight", "marginBottom", document.body ],
[ createFrame, "marginwidth", "marginLeft", document.body ],
[ createFrame, "marginwidth", "marginRight", document.body ],
[ createFrame, "marginheight", "marginTop", document.body ],
[ createFrame, "marginheight", "marginBottom", document.body ],
[ createBody, "marginwidth", "marginLeft", document.body ],
[ createBody, "marginwidth", "marginRight", document.body ],
[ createBody, "leftmargin", "marginLeft", document.body ],
[ createBody, "rightmargin", "marginRight", document.body ],
[ createBody, "marginheight", "marginTop", document.body ],
[ createBody, "marginheight", "marginBottom", document.body ],
[ createBody, "topmargin", "marginTop", document.body ],
[ createBody, "bottommargin", "marginBottom", document.body ],
[ newElem("img"), "border", "borderTopWidth", defaultImg ],
[ newElem("img"), "border", "borderRightWidth", defaultImg ],
[ newElem("img"), "border", "borderBottomWidth", defaultImg ],
[ newElem("img"), "border", "borderLeftWidth", defaultImg ],
[ newElem("object"), "border", "borderTopWidth", defaultObject ],
[ newElem("object"), "border", "borderRightWidth", defaultObject ],
[ newElem("object"), "border", "borderBottomWidth", defaultObject ],
[ newElem("object"), "border", "borderLeftWidth", defaultObject ],
[ newImageInput, "border", "borderTopWidth", defaultInput ],
[ newImageInput, "border", "borderRightWidth", defaultInput ],
[ newImageInput, "border", "borderBottomWidth", defaultInput ],
[ newImageInput, "border", "borderLeftWidth", defaultInput ],
];
function newElem(name) {
return () => {
var elem = document.createElement(name);
document.getElementById("container").appendChild(elem);
return [ elem, elem, () => elem.remove() ];
}
}
function newImageInput() {
var elem = document.createElement("input");
elem.type = "image";
document.getElementById("container").appendChild(elem);
return [ elem, elem, () => elem.remove() ];
}
function createIframe() {
let ifr = document.createElement("iframe");
document.body.appendChild(ifr);
return [ ifr, ifr.contentDocument.body, () => ifr.remove() ];
}
function createBody() {
let ifr = document.createElement("iframe");
document.body.appendChild(ifr);
return [ ifr.contentDocument.body, ifr.contentDocument.body, () => ifr.remove() ];
}
function createFrame() {
// We need to create a separate iframe to put our frameset into.
let ifr = document.createElement("iframe");
document.body.appendChild(ifr);
let doc = ifr.contentDocument;
let root = doc.documentElement;
while (root.firstChild) {
root.firstChild.remove();
}
let frameset = doc.createElement("frameset");
frameset.setAttribute("rows", "*");
frameset.setAttribute("cols", "*");
let frame = doc.createElement("frame");
frameset.appendChild(frame);
root.appendChild(frameset);
return [ frame, frame.contentDocument.body, () => ifr.remove() ];
}
function style(element) {
return element.ownerDocument.defaultView.getComputedStyle(element);
}
for (let [setup, attr, prop, default_elem] of tests) {
for (let [value, result] of valid_values) {
let [ attr_elem, prop_elem, cleanup ] = setup();
test(function() {
this.add_cleanup(cleanup);
attr_elem.setAttribute(attr, value);
assert_equals(attr_elem.getAttribute(attr), value);
assert_equals(style(prop_elem)[prop], result);
}, `<${attr_elem.localName} ${attr}="${value}"> mapping to ${prop}`);
}
let defaultVal = style(default_elem)[prop];
for (let value of invalid_values) {
let [ attr_elem, prop_elem, cleanup ] = setup();
test(function() {
this.add_cleanup(cleanup);
attr_elem.setAttribute(attr, value);
assert_equals(attr_elem.getAttribute(attr), value);
assert_equals(style(prop_elem)[prop], defaultVal);
}, `<${attr_elem.localName} ${attr}="${value}"> mapping to ${prop}`);
}
}
</script>
</body>