<!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-percentage>+",
  inherits: false,
  initialValue: "0px"
}, {
  keyframes: ["100px 150%", "200% 250px"],
  expected: "calc(100% + 50px) calc(75% + 125px)"
}, 'Animating a custom property of type <length-percentage>+');

animation_test({
  syntax: "<length-percentage>+",
  inherits: false,
  initialValue: "100px 150%"
}, {
  keyframes: "200% 250px",
  expected: "calc(100% + 50px) calc(75% + 125px)"
}, 'Animating a custom property of type <length-percentage>+ with a single keyframe');

animation_test({
  syntax: "<length-percentage>+",
  inherits: false,
  initialValue: "50px 100%"
}, {
  composite: "add",
  keyframes: ["150% 200px", "250% 300px"],
  expected: "calc(200% + 50px) calc(100% + 250px)"
}, 'Animating a custom property of type <length-percentage>+ with additivity');

animation_test({
  syntax: "<length-percentage>+",
  inherits: false,
  initialValue: "50px 100%"
}, {
  composite: "add",
  keyframes: "150% 200px",
  expected: "calc(75% + 50px) calc(100% + 100px)"
}, 'Animating a custom property of type <length-percentage>+ with a single keyframe and additivity');

animation_test({
  syntax: "<length-percentage>+",
  inherits: false,
  initialValue: "0px 0px"
}, {
  iterationComposite: "accumulate",
  keyframes: ["0px 50%", "100% 100px"],
  expected: "250% calc(25% + 50px)"
}, 'Animating a custom property of type <length-percentage>+ with iterationComposite');

discrete_animation_test("<length-percentage>+", '10px 20%', '30px', 'Animating a custom property of type <length-percentage>+ with different lengths is discrete');

</script>
