mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
217 lines
8.0 KiB
HTML
217 lines
8.0 KiB
HTML
<!DOCTYPE HTML>
|
|
<html>
|
|
<!--
|
|
https://bugzilla.mozilla.org/show_bug.cgi?id=696253
|
|
-->
|
|
<head>
|
|
<meta charset="utf-8">
|
|
<title>Test behavior of 'align-self:auto' (Bug 696253)</title>
|
|
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
|
|
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
|
|
<style type="text/css">
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=696253">Mozilla Bug 696253</a>
|
|
<div id="display">
|
|
<div id="myDiv"></div>
|
|
</div>
|
|
<pre id="test">
|
|
<script type="application/javascript">
|
|
"use strict";
|
|
|
|
/**
|
|
* Test behavior of 'align-self:auto' (Bug 696253)
|
|
* ===============================================
|
|
*
|
|
* The value "align-self: auto" is special. It's the initial value for
|
|
* "align-self", and it's supposed to compute to the parent's "align-items" value.
|
|
*
|
|
* However, to allow its style-struct to be shared by default, we internally
|
|
* make it compute to a special "auto" enumerated value, and then we resolve that
|
|
* to the correct value by examining the parent's style struct whenever we actually
|
|
* need to use it.
|
|
*
|
|
* This test makes sure that optimization isn't detectable to content.
|
|
*
|
|
* One special case of this is inheritance -- e.g.:
|
|
*
|
|
* <html style="align-items: baseline">
|
|
* <body style="align-self: auto; align-items: center">
|
|
* <div style="align-self: inherit">
|
|
*
|
|
* In that example, the child div's "inherit" should get the _computed_ value
|
|
* of "align-self" on the body. That, in turn, is "auto", so it should compute to
|
|
* its parent's "align-items" value, which is "baseline". So we need to end up
|
|
* with a computed "align-self" value of "baseline" on the child.
|
|
*
|
|
* (NOTE: if we instead allowed the child div to directly inherit the value "auto"
|
|
* from its parent, then we'd get different & incorrect behavior. The div would
|
|
* resolve that inherited "auto" value to its own parent's "align-items" value,
|
|
* which is "center" -- not "baseline".)
|
|
*
|
|
* This mochitest tests that situation and a few other similar tricky situations.
|
|
*/
|
|
|
|
/*
|
|
* Utility function for getting computed style of "align-self":
|
|
*/
|
|
function getComputedAlignSelf(elem) {
|
|
return window.getComputedStyle(elem, "").MozAlignSelf;
|
|
}
|
|
|
|
/*
|
|
* Tests that are useful regardless of whether we have a parent node:
|
|
*/
|
|
function testGeneralNode(elem) {
|
|
// Test initial computed style
|
|
// (Initial value should be 'auto', which should compute to 'stretch')
|
|
is(getComputedAlignSelf(elem), "stretch",
|
|
"initial computed value of 'align-self' should be 'stretch', " +
|
|
"if we haven't explicitly set any style on the parent");
|
|
|
|
// Test value after setting align-self explicitly to "auto"
|
|
elem.style.MozAlignSelf = "auto";
|
|
is(getComputedAlignSelf(elem), "stretch",
|
|
"computed value of 'align-self: auto' should be 'stretch', " +
|
|
"if we haven't explicitly set any style on the parent");
|
|
elem.style.MozAlignSelf = ""; // clean up
|
|
|
|
// Test value after setting align-self explicitly to "inherit"
|
|
elem.style.MozAlignSelf = "inherit";
|
|
is(getComputedAlignSelf(elem), "stretch",
|
|
"computed value of 'align-self: inherit' should be 'stretch', " +
|
|
"if we haven't explicitly set any style on the parent");
|
|
elem.style.MozAlignSelf = ""; // clean up
|
|
}
|
|
|
|
/*
|
|
* Tests that depend on us having a parent node:
|
|
*/
|
|
function testNodeThatHasParent(elem) {
|
|
// Sanity-check that we actually do have a styleable parent:
|
|
ok(elem.parentNode && elem.parentNode.style,
|
|
"bug in test -- expecting caller to pass us a node with a parent");
|
|
|
|
// Test initial computed style when "align-items" has been set on our parent.
|
|
// (elem's initial "align-self" value should be "auto", which should compute
|
|
// to its parent's "align-items" value, which in this case is "center".)
|
|
elem.parentNode.style.MozAlignItems = "center";
|
|
is(getComputedAlignSelf(elem), "center",
|
|
"initial computed value of 'align-self' should match parent's " +
|
|
"specified 'align-items' value");
|
|
|
|
// ...and now test computed style after setting "align-self" explicitly to
|
|
// "auto" (with parent "align-items" still at "center")
|
|
elem.style.MozAlignSelf = "auto";
|
|
is(getComputedAlignSelf(elem), "center",
|
|
"computed value of 'align-self: auto' should match parent's " +
|
|
"specified 'align-items' value");
|
|
|
|
elem.style.MozAlignSelf = ""; // clean up
|
|
elem.parentNode.style.MozAlignItems = ""; // clean up
|
|
|
|
// Finally: test computed style after setting "align-self" to "inherit"
|
|
// and leaving parent at its initial value (which should be "auto", which
|
|
// should compute to "stretch")
|
|
elem.style.MozAlignSelf = "inherit";
|
|
is(getComputedAlignSelf(elem), "stretch",
|
|
"computed value of 'align-self: inherit' should take parent's " +
|
|
"computed 'align-self' value (which should be 'stretch', " +
|
|
"if we haven't explicitly set any other style");
|
|
elem.style.MozAlignSelf = ""; // clean up
|
|
}
|
|
|
|
/*
|
|
* Tests that depend on us having a grandparent node:
|
|
*/
|
|
function testNodeThatHasGrandparent(elem) {
|
|
// Sanity-check that we actually do have a styleable grandparent:
|
|
ok(elem.parentNode && elem.parentNode.parentNode &&
|
|
elem.parentNode.parentNode.style,
|
|
"bug in test -- should be getting a node with a grandparent");
|
|
|
|
// Test computed "align-self" after we set "align-self" to "inherit" on our elem
|
|
// and to "auto" on its parent, and "align-items" to "baseline" on its
|
|
// grandparent. The parent's "auto" value should resolve to "baseline", and
|
|
// that's what our elem should inherit.
|
|
|
|
elem.style.MozAlignSelf = "inherit";
|
|
elem.parentNode.style.MozAlignSelf = "auto";
|
|
elem.parentNode.parentNode.style.MozAlignItems = "baseline";
|
|
|
|
is(getComputedAlignSelf(elem), "baseline",
|
|
"computed value of 'align-self:inherit' on node when parent has " +
|
|
"'align-self:auto' and grandparent has 'align-items:baseline'")
|
|
|
|
// clean up:
|
|
elem.style.MozAlignSelf = "";
|
|
elem.parentNode.style.MozAlignSelf = "";
|
|
elem.parentNode.parentNode.style.MozAlignItems = "";
|
|
|
|
// Test computed "align-self" after we set it to "auto" on our node, set
|
|
// "align-items" to "inherit" on its parent, and "align-items" to "baseline"
|
|
// on its grandparent. The parent's "inherit" should compute to "baseline",
|
|
// and our elem's "auto" value should resolve to that.
|
|
elem.style.MozAlignSelf = "auto";
|
|
elem.parentNode.style.MozAlignItems = "inherit";
|
|
elem.parentNode.parentNode.style.MozAlignItems = "baseline";
|
|
is(getComputedAlignSelf(elem), "baseline",
|
|
"computed value of 'align-self:auto on node when parent has " +
|
|
"'align-items:inherit' and grandparent has 'align-items:baseline'")
|
|
|
|
// clean up:
|
|
elem.style.MozAlignSelf = "";
|
|
elem.parentNode.style.MozAlignItems = "";
|
|
elem.parentNode.parentNode.style.MozAlignItems = "";
|
|
}
|
|
|
|
/*
|
|
* Main test function
|
|
*/
|
|
function main() {
|
|
// Test the root node
|
|
// ==================
|
|
// (It's special because it has no parent style context.)
|
|
|
|
var rootNode = document.documentElement;
|
|
|
|
// Sanity-check that we actually have the root node, as far as CSS is concerned.
|
|
// (Note: rootNode.parentNode is a HTMLDocument object -- not an element that
|
|
// we inherit style from.)
|
|
ok(!rootNode.parentNode.style,
|
|
"expecting root node to have no node to inherit style from");
|
|
|
|
testGeneralNode(rootNode);
|
|
|
|
// Test the body node
|
|
// ==================
|
|
// (It's special because it has no grandparent style context.)
|
|
|
|
var body = document.getElementsByTagName("body")[0];
|
|
is(body.parentNode, document.documentElement,
|
|
"expecting body element's parent to be the root node");
|
|
|
|
testGeneralNode(body);
|
|
testNodeThatHasParent(body);
|
|
|
|
// Test the <div id="display"> node
|
|
// ================================
|
|
// (It has both a parent and a grandparent style context.)
|
|
|
|
var displayNode = document.getElementById("display");
|
|
is(displayNode.parentNode.parentNode, document.documentElement,
|
|
"expecting 'display' node's grandparent to be the root node");
|
|
|
|
testGeneralNode(displayNode);
|
|
testNodeThatHasParent(displayNode);
|
|
testNodeThatHasGrandparent(displayNode);
|
|
}
|
|
|
|
main();
|
|
|
|
</script>
|
|
</pre>
|
|
</body>
|
|
</html>
|