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<!DOCTYPE html>
<link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api-1">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/utils.js"></script>
<div id="target"></div>
<script>
animation_test({
syntax: "<length>",
inherits: false,
initialValue: "0px"
}, {
keyframes: ["100px", "200px"],
expected: "150px"
}, 'Animating a custom property of type <length>');
animation_test({
syntax: "<length>",
inherits: false,
initialValue: "100px"
}, {
keyframes: "200px",
expected: "150px"
}, 'Animating a custom property of type <length> with a single keyframe');
animation_test({
syntax: "<length>",
inherits: false,
initialValue: "100px"
}, {
composite: "add",
keyframes: ["200px", "300px"],
expected: "350px"
}, 'Animating a custom property of type <length> with additivity');
animation_test({
syntax: "<length>",
inherits: false,
initialValue: "100px"
}, {
composite: "add",
keyframes: "300px",
expected: "250px"
}, 'Animating a custom property of type <length> with a single keyframe and additivity');
animation_test({
syntax: "<length>",
inherits: false,
initialValue: "100px"
}, {
iterationComposite: "accumulate",
keyframes: ["0px", "100px"],
expected: "250px"
}, 'Animating a custom property of type <length> with iterationComposite');
</script>
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