1 files changed, 26 insertions, 0 deletions
diff --git a/testing/web-platform/tests/dom/nodes/insertion-removing-steps/Node-appendChild-script-and-button-from-div.tentative.html b/testing/web-platform/tests/dom/nodes/insertion-removing-steps/Node-appendChild-script-and-button-from-div.tentative.html
new file mode 100644
index 0000000000..91f09ae500
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/insertion-removing-steps/Node-appendChild-script-and-button-from-div.tentative.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Node.appendChild: inserting script and button from a div</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<form id="form"></form>
+<script>
+let button = null;
+let buttonForm = null;
+test(() => {
+  const form = document.getElementById("form");
+  const script = document.createElement("script");
+  script.textContent = `
+    buttonForm = button.form;
+  `;
+  button = document.createElement("button");
+  const div = document.createElement("div");
+  div.appendChild(script);
+  div.appendChild(button);
+  assert_equals(buttonForm, null);
+  form.appendChild(div);
+  assert_equals(buttonForm, form);
+}, "Script inserted before a form-associated button can observe the button's " +
+   "form, because by the time the script executes, the DOM insertion that " +
+   "associates the button with the form is already done");
+</script>