1 files changed, 53 insertions, 0 deletions
diff --git a/testing/web-platform/tests/navigation-api/state/same-document-away-and-back-navigation-api.html b/testing/web-platform/tests/navigation-api/state/same-document-away-and-back-navigation-api.html
new file mode 100644
index 0000000000..220908e4c4
--- /dev/null
+++ b/testing/web-platform/tests/navigation-api/state/same-document-away-and-back-navigation-api.html
@@ -0,0 +1,53 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+async_test(t => {
+  // Wait for after the load event so that the navigation doesn't get converted
+  // into a replace navigation.
+  window.onload = () => t.step_timeout(async () => {
+    let entry0 = navigation.currentEntry;
+
+    let navState = { statevar: "state" };
+    await navigation.navigate("#1", { state: navState }).committed;
+    let entry1 = navigation.currentEntry;
+
+    navState.startvar2 = "otherstate";
+    await navigation.navigate("#2", { state: navState }).committed;
+    let entry2 = navigation.currentEntry;
+
+    t.step_func(() => {
+      assert_equals(navigation.entries().length, 3);
+      assert_equals(entry0, navigation.entries()[0]);
+      assert_equals(entry1, navigation.entries()[1]);
+      assert_equals(entry2, navigation.entries()[2]);
+
+      assert_equals(entry0.getState(), undefined);
+
+      let state1 = entry1.getState();
+      assert_not_equals(state1, undefined);
+      assert_not_equals(state1, navState);
+      assert_equals(state1.statevar, "state");
+      assert_equals(state1.startvar2, undefined);
+
+      let state2 = entry2.getState();
+      assert_not_equals(state2, undefined);
+      assert_not_equals(state2, navState);
+      assert_equals(state2.statevar, "state");
+      assert_equals(state2.startvar2, "otherstate");
+
+      navigation.back();
+      window.onpopstate = t.step_func_done(() => {
+        assert_equals(navigation.entries().length, 3);
+        let back_entry = navigation.currentEntry;
+        assert_equals(back_entry, navigation.entries()[1]);
+        let back_state = back_entry.getState();
+        assert_not_equals(back_state, state1);
+        assert_not_equals(back_state, state2);
+        assert_equals(back_state.statevar, "state");
+        assert_equals(back_state.startvar2, undefined);
+      });
+    })();
+  }, 0);
+}, "entry.getState() behavior after navigating away using the navigation API, then back");
+</script>