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-rw-r--r--testing/web-platform/tests/navigation-api/scroll-behavior/after-transition-reload.html41
1 files changed, 41 insertions, 0 deletions
diff --git a/testing/web-platform/tests/navigation-api/scroll-behavior/after-transition-reload.html b/testing/web-platform/tests/navigation-api/scroll-behavior/after-transition-reload.html
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+++ b/testing/web-platform/tests/navigation-api/scroll-behavior/after-transition-reload.html
@@ -0,0 +1,41 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<div id="buffer" style="height: 1000px; width: 1000px;"></div>
+<div id="frag"></div>
+<div style="height: 1000px; width: 1000px;"></div>
+<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));
+ assert_equals(window.scrollY, 0);
+ await navigation.navigate("#frag").finished;
+ // Scroll down 10px from #frag
+ window.scrollBy(0, 10);
+ let scrollY_frag_plus_10 = window.scrollY;
+
+ let intercept_resolve;
+ let navigate_event;
+ navigation.onnavigate = e => {
+ navigate_event = e;
+ e.intercept({ handler: () => new Promise(r => intercept_resolve = r),
+ scroll: "after-transition" });
+ };
+ let reload_promises = navigation.reload();
+ await reload_promises.committed;
+
+ // removing the <div id="buffer"> should scroll up 1000px.
+ assert_equals(window.scrollY, scrollY_frag_plus_10);
+ buffer.remove();
+ let scrollY_after_buffer_remove = window.scrollY;
+ assert_equals(scrollY_after_buffer_remove, scrollY_frag_plus_10 - 1000);
+
+ // Finishing should scroll to #frag, which is 10px up from the current location
+ intercept_resolve();
+ await reload_promises.finished;
+ assert_equals(window.scrollY, scrollY_after_buffer_remove - 10);
+}, "scroll: after-transition should work on a reload navigation");
+</script>
+</body>