1 files changed, 27 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-properties-values-api/animation/custom-property-animation-non-inherited-used-by-standard-property.html b/testing/web-platform/tests/css/css-properties-values-api/animation/custom-property-animation-non-inherited-used-by-standard-property.html
new file mode 100644
index 0000000000..11d3f6740d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-properties-values-api/animation/custom-property-animation-non-inherited-used-by-standard-property.html
@@ -0,0 +1,27 @@
+<!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>
+
+test(() => {
+  CSS.registerProperty({
+    name: "--my-length",
+    syntax: "<length>",
+    inherits: false,
+    initialValue: "0px"
+  });
+
+  target.style.marginLeft = "var(--my-length)";
+
+  const duration = 1000;
+  const animation = target.animate({ "--my-length": "100px" }, duration);
+  animation.pause();
+  animation.currentTime = duration / 4;
+
+  assert_equals(getComputedStyle(target).marginLeft, "25px");
+}, "Animating a non-inherited CSS variable is reflected on a standard property using that variable as a value");
+
+</script>
+\ No newline at end of file