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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title> CSS Scroll Snap 2 Test: scroll-start-* computed values</title>
<link rel="help" href="https://drafts.csswg.org/css-scroll-snap-2/#scroll-start">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/computed-testcommon.js"></script>
</head>
<body>
<div id="target"></div>
<script>
test_computed_value("scroll-start", "start");
test_computed_value("scroll-start", "start start", "start");
test_computed_value("scroll-start", "100px");
test_computed_value("scroll-start", "50%");
test_computed_value("scroll-start", "center");
test_computed_value("scroll-start", "100px 200px");
test_computed_value("scroll-start", "50% 100px");
test_computed_value("scroll-start", "start 50%");
test_computed_value("scroll-start", "center start", "center");
test_computed_value("scroll-start", "end center");
test_computed_value("scroll-start", "top end");
test_computed_value("scroll-start", "bottom top");
test_computed_value("scroll-start", "left bottom");
test_computed_value("scroll-start", "right left");
test_computed_value("scroll-start", "auto right");
test_computed_value("scroll-start", "calc(1px)", "1px")
test_computed_value("scroll-start", "calc(1px) start", "1px")
test_computed_value("scroll-start-block", "100px");
test_computed_value("scroll-start-block", "50%");
test_computed_value("scroll-start-block", "start");
test_computed_value("scroll-start-block", "center");
test_computed_value("scroll-start-block", "end");
test_computed_value("scroll-start-block", "top");
test_computed_value("scroll-start-block", "bottom");
test_computed_value("scroll-start-block", "left");
test_computed_value("scroll-start-block", "right");
test_computed_value("scroll-start-block", "auto");
test_computed_value("scroll-start-block", "calc(-1px)", "0px");
test_computed_value("scroll-start-inline", "100px");
test_computed_value("scroll-start-inline", "50%");
test_computed_value("scroll-start-inline", "start");
test_computed_value("scroll-start-inline", "center");
test_computed_value("scroll-start-inline", "end");
test_computed_value("scroll-start-inline", "top");
test_computed_value("scroll-start-inline", "bottom");
test_computed_value("scroll-start-inline", "left");
test_computed_value("scroll-start-inline", "right");
test_computed_value("scroll-start-inline", "auto");
test_computed_value("scroll-start-inline", "calc(-1px)", "0px");
test_computed_value("scroll-start-x", "100px");
test_computed_value("scroll-start-x", "50%");
test_computed_value("scroll-start-x", "start");
test_computed_value("scroll-start-x", "center");
test_computed_value("scroll-start-x", "end");
test_computed_value("scroll-start-x", "top");
test_computed_value("scroll-start-x", "bottom");
test_computed_value("scroll-start-x", "left");
test_computed_value("scroll-start-x", "right");
test_computed_value("scroll-start-x", "auto");
test_computed_value("scroll-start-x", "calc(-1px)", "0px");
test_computed_value("scroll-start-y", "100px");
test_computed_value("scroll-start-y", "50%");
test_computed_value("scroll-start-y", "start");
test_computed_value("scroll-start-y", "center");
test_computed_value("scroll-start-y", "end");
test_computed_value("scroll-start-y", "top");
test_computed_value("scroll-start-y", "bottom");
test_computed_value("scroll-start-y", "left");
test_computed_value("scroll-start-y", "right");
test_computed_value("scroll-start-y", "auto");
test_computed_value("scroll-start-y", "calc(-1px)", "0px");
target.style = "";
// Test logical-physical mapping.
test((t) => {
t.add_cleanup(() => { target.style = ""; });
target.style.scrollStartBlock = "100px";
assert_equals(getComputedStyle(target).scrollStartX, "auto");
assert_equals(getComputedStyle(target).scrollStartY, "100px");
}, "scroll-start-block maps to scroll-start-y in horizontal writing mode.");
test((t) => {
t.add_cleanup(() => { target.style = ""; });
target.style.scrollStartInline = "200px";
assert_equals(getComputedStyle(target).scrollStartX, "200px");
assert_equals(getComputedStyle(target).scrollStartY, "auto");
}, "scroll-start-inline maps to scroll-start-x in horizontal writing mode.");
test((t) => {
t.add_cleanup(() => { target.style = ""; });
target.style.scrollStartX = "100px";
assert_equals(getComputedStyle(target).scrollStartBlock, "auto");
assert_equals(getComputedStyle(target).scrollStartInline, "100px");
}, "scroll-start-x maps to scroll-start-inline in horizontal writing mode.");
test((t) => {
t.add_cleanup(() => { target.style = ""; });
target.style.scrollStartY = "200px";
assert_equals(getComputedStyle(target).scrollStartBlock, "200px");
assert_equals(getComputedStyle(target).scrollStartInline, "auto");
}, "scroll-start-y maps to scroll-start-block in horizontal writing mode.");
test((t) => {
t.add_cleanup(() => { target.style = ""; });
target.style.scrollStartBlock = "100px";
target.style.writingMode = "vertical-lr";
assert_equals(getComputedStyle(target).scrollStartX, "100px");
assert_equals(getComputedStyle(target).scrollStartY, "auto");
}, "scroll-start-block maps to scroll-start-x in vertical writing mode.");
test((t) => {
t.add_cleanup(() => { target.style = ""; });
target.style.scrollStartInline = "200px";
target.style.writingMode = "vertical-lr";
assert_equals(getComputedStyle(target).scrollStartX, "auto");
assert_equals(getComputedStyle(target).scrollStartY, "200px");
}, "scroll-start-inline maps to scroll-start-y in vertical writing mode.");
test((t) => {
t.add_cleanup(() => { target.style = ""; });
target.style.scrollStartX = "100px";
target.style.writingMode = "vertical-lr";
assert_equals(getComputedStyle(target).scrollStartBlock, "100px");
assert_equals(getComputedStyle(target).scrollStartInline, "auto");
}, "scroll-start-x maps to scroll-start-block in vertical writing mode.");
test((t) => {
t.add_cleanup(() => { target.style = ""; });
target.style.scrollStartY = "200px";
target.style.writingMode = "vertical-lr";
assert_equals(getComputedStyle(target).scrollStartBlock, "auto");
assert_equals(getComputedStyle(target).scrollStartInline, "200px");
}, "scroll-start-y maps to scroll-start-inline in vertical writing mode.");
</script>
</body>
</html>
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