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Test Info:

<!DOCTYPE html>
<meta charset=utf-8>
<title>DOMRect's handling of NaN in top/bottom/left/right</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
"use strict";
for (const i of [1, 2, 3, 4]) {
for (const comp of ["x", "y"]) {
test(() => {
const args = [{ x: 0, y: 0 }, { x: 0, y: 0 }, { x: 0, y: 0 }, { x: 0, y: 0 }];
args[i - 1][comp] = NaN;
const quad = new DOMQuad(...args);
const bounds = quad.getBounds();
if (comp === "x") {
assert_equals(bounds.x, NaN, "x coordinate");
assert_equals(bounds.y, 0, "y coordinate");
assert_equals(bounds.width, NaN, "width");
assert_equals(bounds.height, 0, "height");
} else {
assert_equals(bounds.x, 0, "x coordinate");
assert_equals(bounds.y, NaN, "y coordinate");
assert_equals(bounds.width, 0, "width");
assert_equals(bounds.height, NaN, "height");
}
}, `Setting DOMQuad's p${i}.${comp} to NaN`);
}
}
</script>