Dactyloidae/layout/style/test/test_nesting_flattening_recovery.html

149 lines
4.8 KiB
HTML

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Test CSS Nesting Flattening Recovery Paths</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
</head>
<body>
<div id="recBase" class="rec-base"><span id="recBaseChild"></span></div>
<div id="recMalformed" class="rec-malformed"></div>
<div id="recGroup" class="rec-group"></div>
<div id="recTail" class="rec-tail"></div>
<pre id="standalone-log"></pre>
<script>
"use strict";
function propOf(win, element, property) {
return win.getComputedStyle(element).getPropertyValue(property);
}
function appendTestSheet() {
var style = document.createElement("style");
style.textContent =
".rec-base {\n" +
" color: rgb(1, 2, 3);\n" +
" |* {\n" +
" color: rgb(4, 5, 6);\n" +
" }\n" +
" background-color: rgb(7, 8, 9);\n" +
"}\n" +
"\n" +
".rec-malformed {\n" +
" color: rgb(20, 21, 22);\n" +
" : {\n" +
" color: rgb(23, 24, 25);\n" +
" }\n" +
" border-top-style: solid;\n" +
" border-top-color: rgb(26, 27, 28);\n" +
"}\n" +
"\n" +
".rec-group {\n" +
" color: rgb(32, 33, 34);\n" +
" @counter-style rec-counter {\n" +
" system: fixed;\n" +
" symbols: a;\n" +
" }\n" +
" background-color: rgb(35, 36, 37);\n" +
"}\n" +
"\n" +
".rec-tail {\n" +
" color: rgb(50, 51, 52);\n" +
"}\n";
document.head.appendChild(style);
return style;
}
function runChecks(style, report) {
var recBase = document.getElementById("recBase");
var recBaseChild = document.getElementById("recBaseChild");
var recMalformed = document.getElementById("recMalformed");
var recGroup = document.getElementById("recGroup");
var recTail = document.getElementById("recTail");
report(propOf(window, recBase, "color") === "rgb(1, 2, 3)",
"unsupported nested selector should not wipe earlier declarations",
propOf(window, recBase, "color"),
"rgb(1, 2, 3)");
report(propOf(window, recBase, "background-color") === "rgb(7, 8, 9)",
"unsupported nested selector should not wipe later declarations",
propOf(window, recBase, "background-color"),
"rgb(7, 8, 9)");
report(propOf(window, recBaseChild, "color") === "rgb(1, 2, 3)",
"unsupported nested selector should not restyle descendants unexpectedly",
propOf(window, recBaseChild, "color"),
"rgb(1, 2, 3)");
report(propOf(window, recMalformed, "color") === "rgb(20, 21, 22)",
"malformed nested selector should keep declaration before it",
propOf(window, recMalformed, "color"),
"rgb(20, 21, 22)");
report(propOf(window, recMalformed, "border-top-color") === "rgb(26, 27, 28)",
"malformed nested selector should keep declaration after it",
propOf(window, recMalformed, "border-top-color"),
"rgb(26, 27, 28)");
report(propOf(window, recGroup, "color") === "rgb(32, 33, 34)",
"nested unsupported at-rule should keep declaration before it",
propOf(window, recGroup, "color"),
"rgb(32, 33, 34)");
report(propOf(window, recGroup, "background-color") === "rgb(35, 36, 37)",
"nested unsupported at-rule should keep declaration after it",
propOf(window, recGroup, "background-color"),
"rgb(35, 36, 37)");
report(propOf(window, recTail, "color") === "rgb(50, 51, 52)",
"rules after recovery scenarios should still parse",
propOf(window, recTail, "color"),
"rgb(50, 51, 52)");
report(style.sheet.cssRules.length >= 4,
"stylesheet should remain parseable after recovery scenarios",
String(style.sheet.cssRules.length),
">= 4");
}
function runStandalone() {
var log = document.getElementById("standalone-log");
var lines = [
"Standalone mode.",
"This page only demonstrates nesting if layout.css.nesting.enabled is already true in the browser.",
""
];
var style = appendTestSheet();
runChecks(style, function(pass, message, actual, expected) {
lines.push((pass ? "PASS" : "FAIL") + ": " + message);
if (!pass) {
lines.push(" expected: " + expected);
lines.push(" actual: " + actual);
}
});
log.textContent = lines.join("\n");
}
function runMochitest() {
SimpleTest.waitForExplicitFinish();
SpecialPowers.pushPrefEnv({
set: [["layout.css.nesting.enabled", true]]
}, function() {
var style = appendTestSheet();
runChecks(style, function(pass, message, actual, expected) {
ok(pass, message + " (expected: " + expected + ", actual: " + actual + ")");
});
SimpleTest.finish();
});
}
if (typeof SimpleTest !== "undefined" && typeof SpecialPowers !== "undefined") {
runMochitest();
} else {
runStandalone();
}
</script>
</body>
</html>