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diff --git a/testing/web-platform/tests/svg/animations/svgstring-animation-1.html b/testing/web-platform/tests/svg/animations/svgstring-animation-1.html
new file mode 100644
index 0000000000..259dfbd27a
--- /dev/null
+++ b/testing/web-platform/tests/svg/animations/svgstring-animation-1.html
@@ -0,0 +1,66 @@
+<!doctype html>
+<html>
+<title>Test animVal support for SVGAnimatedString animations.</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 aElement = createSVGElement("a");
+aElement.setAttribute("target", "base");
+
+var textElement = createSVGElement("text");
+textElement.setAttribute("id", "text");
+textElement.setAttribute("y", "50");
+textElement.textContent = "Test";
+aElement.appendChild(textElement);
+rootSVGElement.appendChild(aElement);
+
+var animate = createSVGElement("animate");
+animate.setAttribute("id", "animation");
+animate.setAttribute("attributeName", "target");
+animate.setAttribute("begin", "0s");
+animate.setAttribute("dur", "4s");
+animate.setAttribute("values", "a;b");
+aElement.appendChild(animate);
+
+// Setup animation test
+function sample1() {
+    assert_equals(aElement.target.animVal, "base");
+    assert_equals(aElement.target.baseVal, "base");
+}
+
+function sample2() {
+    assert_equals(aElement.target.animVal, "a");
+    assert_equals(aElement.target.baseVal, "base");
+}
+
+function sample3() {
+    assert_equals(aElement.target.animVal, "b");
+    assert_equals(aElement.target.baseVal, "base");
+}
+
+smil_async_test((t) => {
+    const expectedValues = [
+        // [animationId, time, sampleCallback]
+        ["animation", 0.0,   sample1],
+        ["animation", 0.001, sample2],
+        ["animation", 1.999, sample2],
+        ["animation", 2.001, sample3],
+        ["animation", 3.999, sample3],
+        ["animation", 4.001, sample1]
+    ];
+
+    runAnimationTest(t, expectedValues);
+});
+
+window.animationStartsImmediately = true;
+
+</script>