1 files changed, 50 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/forms/form-submission-0/form-double-submit-3.html b/testing/web-platform/tests/html/semantics/forms/form-submission-0/form-double-submit-3.html
new file mode 100644
index 0000000000..fbb6a42577
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/forms/form-submission-0/form-double-submit-3.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<link rel="author" href="mailto:masonf@chromium.org">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#form-submission-algorithm">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<!-- <button> should have the same double-submit protection that
+     <input type=submit> has.
+  -->
+
+
+
+
+<label for=frame1 style="display:block">This frame should stay blank</label>
+<iframe name=frame1 id=frame1></iframe>
+<label for=frame2 style="display:block">This frame should navigate (to 404)</label>
+<iframe name=frame2 id=frame2></iframe>
+<form id="form1" target="frame1" action="nonexistent.html">
+  <input type=hidden name=navigated value=1>
+  <button id=submitbutton>submit</button>
+</form>
+
+<script>
+let frame1 = document.getElementById('frame1');
+let frame2 = document.getElementById('frame2');
+let form1 = document.getElementById('form1');
+let submitbutton = document.getElementById('submitbutton');
+
+async_test(t => {
+  window.addEventListener('load', () => {
+    frame1.addEventListener('load', t.step_func_done(() => {
+      assert_unreached("Frame1 should not get navigated by this test.");
+    }));
+    frame2.addEventListener('load', t.step_func_done(() => {
+      let params = (new URL(frame2.contentWindow.location)).searchParams;
+      let wasNavigated = !!params.get("navigated");
+      assert_true(wasNavigated)
+    }));
+    form1.addEventListener('click', t.step_func(() => {
+      form1.submit();
+      form1.target='frame2';
+
+    }));
+    submitbutton.click();
+  });
+}, '<button> should have the same double-submit protection as <input type=submit>');
+
+</script>