1 files changed, 47 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/PopStateEvent.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/PopStateEvent.html
new file mode 100644
index 0000000000..9ee7576249
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/PopStateEvent.html
@@ -0,0 +1,47 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Synthetic popstate events</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  assert_throws_js(
+    TypeError,
+    () => PopStateEvent(''),
+    "Calling PopStateEvent constructor without 'new' must throw"
+  );
+}, "PopStateEvent constructor called as normal function");
+
+test(function () {
+  assert_false('initPopStateEvent' in PopStateEvent.prototype,
+               'There should be no PopStateEvent#initPopStateEvent');
+}, 'initPopStateEvent');
+
+test(function () {
+  var popStateEvent = new PopStateEvent("popstate");
+  assert_equals(popStateEvent.state, null, "the PopStateEvent.state");
+}, "Initial value of PopStateEvent.state must be null");
+
+test(function () {
+  var popStateEvent = new PopStateEvent("popstate");
+  assert_false(popStateEvent.hasUAVisualTransition, "the PopStateEvent.hasUAVisualTransition");
+}, "Initial value of PopStateEvent.hasUAVisualTransition must be false");
+
+test(function () {
+  var state = history.state;
+  var data;
+  var hasUAVisualTransition = false;
+  window.addEventListener('popstate', function (e) {
+    data = e.state;
+    hasUAVisualTransition = e.hasUAVisualTransition;
+  });
+  window.dispatchEvent(new PopStateEvent('popstate', {
+    'state': {testdata:true},
+    'hasUAVisualTransition': true
+  }));
+  assert_true(data.testdata,'state data was corrupted');
+  assert_equals(history.state, state, "history.state was NOT set by dispatching the event");
+  assert_true(hasUAVisualTransition, 'hasUAVisualTransition not set correctly');
+}, 'Dispatching a synthetic PopStateEvent');
+</script>