1 files changed, 25 insertions, 0 deletions
diff --git a/testing/web-platform/tests/navigation-api/navigation-methods/return-value/back-intercept.html b/testing/web-platform/tests/navigation-api/navigation-methods/return-value/back-intercept.html
new file mode 100644
index 0000000000..2654045c2b
--- /dev/null
+++ b/testing/web-platform/tests/navigation-api/navigation-methods/return-value/back-intercept.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/helpers.js"></script>
+
+<script>
+promise_test(async t => {
+  // Wait for after the load event so that the navigation doesn't get converted
+  // into a replace navigation.
+  await new Promise(resolve => window.onload = () => t.step_timeout(resolve, 0));
+
+  location.href = "#1";
+
+  assert_equals(navigation.entries().length, 2);
+  const [entry0, entry1] = navigation.entries();
+  assert_equals((new URL(entry0.url)).hash, "");
+  assert_equals((new URL(entry1.url)).hash, "#1");
+
+  navigation.onnavigate = e => e.intercept({ handler: () => Promise.resolve({ abc: "def" }) });
+
+  const result = navigation.back();
+  await assertBothFulfill(t, result, entry0);
+  assert_equals(navigation.currentEntry, entry0);
+}, "back() and intercept() with a fulfilled promise");
+</script>