1 files changed, 59 insertions, 0 deletions
diff --git a/testing/web-platform/tests/svg/animations/animate-insert-begin.html b/testing/web-platform/tests/svg/animations/animate-insert-begin.html
new file mode 100644
index 0000000000..5155391a91
--- /dev/null
+++ b/testing/web-platform/tests/svg/animations/animate-insert-begin.html
@@ -0,0 +1,59 @@
+<!doctype html>
+<html>
+<meta charset="utf-8">
+<title>Test behavior of dynamically inserting animate with begin attribute</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/SVGAnimationTestCase-testharness.js"></script>
+
+<svg>
+</svg>
+
+<script>
+var rootSVGElement = document.querySelector("svg");
+var epsilon = 1.0;
+
+// Setup test document
+var rect = createSVGElement("rect");
+rect.setAttribute("id", "rect");
+rect.setAttribute("x", "0");
+rect.setAttribute("y", "45");
+rect.setAttribute("width", "10");
+rect.setAttribute("height", "10");
+rect.setAttribute("fill", "green");
+
+var animate = createSVGElement("animate");
+animate.setAttribute("id", "animation");
+animate.setAttribute("attributeName", "x");
+animate.setAttribute("begin", "0");
+animate.setAttribute("from", "0");
+animate.setAttribute("to", "90");
+animate.setAttribute("dur", "3s");
+animate.setAttribute("fill", "freeze");
+rect.appendChild(animate);
+rootSVGElement.appendChild(rect);
+
+// Setup animation test
+function sample1() {
+    assert_approx_equals(rect.x.animVal.value, 0, epsilon);
+    assert_equals(rect.x.baseVal.value, 0);
+}
+
+function sample2() {
+    assert_approx_equals(rect.x.animVal.value, 90, epsilon);
+    assert_equals(rect.x.baseVal.value, 0);
+}
+
+smil_async_test((t) => {
+    const expectedValues = [
+        // [animationId, time, sampleCallback]
+        ["animation", 0.0, sample1],
+        ["animation", 3.0, sample2],
+    ];
+
+    runAnimationTest(t, expectedValues);
+});
+
+window.animationStartsImmediately = true;
+
+</script>
+\ No newline at end of file