1 files changed, 39 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/forms/the-selectlist-element/selectlist-form-state-restore.tentative.html b/testing/web-platform/tests/html/semantics/forms/the-selectlist-element/selectlist-form-state-restore.tentative.html
new file mode 100644
index 0000000000..f98494a950
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/forms/the-selectlist-element/selectlist-form-state-restore.tentative.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html lang="en">
+<title>HTMLSelectListElement Test: form state restore</title>
+<link rel="author" title="Ionel Popescu" href="mailto:iopopesc@microsoft.com">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<input id="emptyOnFirstVisit">
+<form action="support/back.html" id="form0">
+<selectlist id="selectlist0">
+  <option>one</option>
+  <option>two</option>
+  <option>three</option>
+</selectlist>
+</form>
+
+<script>
+async_test(t => {
+  window.onload = () => t.step_timeout(() => {
+    let state = document.getElementById('emptyOnFirstVisit');
+    let selectList = document.getElementById("selectlist0");
+
+    if (!state.value) {
+      // First visit.
+      t.step_timeout(() => {
+        state.value = 'visited';
+        assert_equals(selectList.value, "one");
+        selectList.value = "two";
+        // The form is submitted in a timeout to make sure that a new back/forward list item is created.
+        document.getElementById('form0').submit();
+      }, 0);
+    } else {
+      // Went back to this page again, and the form state should be restored.
+      assert_equals(selectList.value, "two");
+      t.done();
+    }
+  }, 1);
+}, "Test restoring state after form submission");
+</script>