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<!DOCTYPE html>
<title>CSSOM: CSSPageRule tests</title>
<link rel="help" href="https://drafts.csswg.org/cssom/#the-csspagerule-interface" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
@page {}
</style>
<script>
const sheet = document.styleSheets[0];
const rule = sheet.cssRules[0];
test(() => {
assert_true(!!rule);
assert_equals(rule.type, CSSRule.PAGE_RULE);
}, "Sanity checks");
test(() => {
assert_equals(rule.selectorText, "");
}, "Page selector is initially the empty string");
test(() => {
rule.selectorText = ":left";
assert_equals(rule.selectorText, ":left");
}, "Set selectorText to :left pseudo page");
test(() => {
rule.selectorText = "named";
assert_equals(rule.selectorText, "named");
}, "Set selectorText to named page");
test(() => {
rule.selectorText = "named:first";
assert_equals(rule.selectorText, "named:first");
}, "Set selectorText to named page with :first pseudo page");
test(() => {
assert_equals(rule.parentStyleSheet, sheet);
sheet.deleteRule(0);
assert_equals(rule.parentStyleSheet, null);
rule.selectorText = "pagename";
}, "Set selectorText to named page after rule was removed");
</script>
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