1 files changed, 71 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-navigation-cross-origin.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-navigation-cross-origin.html
new file mode 100644
index 0000000000..87a337b2da
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-navigation-cross-origin.html
@@ -0,0 +1,71 @@
+<!DOCTYPE html>
+<meta name=timeout content=long>
+<title>Correct behaviour of scroll restoration mode is cross origin history traversal</title>
+
+<style>
+  iframe {
+    height: 300px;
+    width: 300px;
+  }
+</style>
+
+<body>
+  <iframe></iframe>
+</body>
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script type="text/javascript">
+  'use strict';
+
+  // The test does the following navigation steps for iframe
+  // 1. load blank1
+  // 2. load blank2
+  // 3. go back to blank1
+  async_test(function(t) {
+    var iframe = document.querySelector('iframe');
+    var baseURL = location.href.substring(0, location.href.lastIndexOf('/'));
+
+    var steps = [
+      function() {
+        iframe.src = 'resources/blank1.html';
+      },
+      function() {
+        assert_equals(iframe.contentWindow.location.href, baseURL + '/resources/blank1.html', 'should be on first blank page');
+        iframe.contentWindow.history.scrollRestoration = 'manual';
+        assert_equals(iframe.contentWindow.history.scrollRestoration, 'manual');
+        iframe.contentWindow.scrollTo(500, 500);
+        assert_equals(iframe.contentWindow.scrollX, 500, 'scripted scrolling should take effect');
+        assert_equals(iframe.contentWindow.scrollY, 500, 'scripted scrolling should take effect');
+        setTimeout(next, 0);
+      },
+      function() {
+        // navigate to new page
+        iframe.src = 'resources/blank2.html';
+      },
+      function() {
+        assert_equals(iframe.contentWindow.location.href, baseURL + '/resources/blank2.html', 'should be on second blank page');
+        assert_equals(iframe.contentWindow.history.scrollRestoration, 'auto', 'new page loads should set scrollRestoration to "auto"');
+        setTimeout(next, 0);
+      }, function() {
+        iframe.contentWindow.history.back();
+      }, function() {
+        // coming back scrollRestoration should be restored to 'manual' and respected
+        assert_equals(iframe.contentWindow.location.href, baseURL + '/resources/blank1.html', 'should be back on first blank page');
+        assert_equals(iframe.contentWindow.history.scrollRestoration, 'manual', 'navigating back should retain scrollRestoration value');
+        assert_equals(iframe.contentWindow.scrollX, 0, 'horizontal scroll offset should not be restored');
+        assert_equals(iframe.contentWindow.scrollY, 0, 'vertical scroll offset should not be restored');
+        t.done();
+      }
+    ];
+
+    var stepCount = 0;
+    var next = t.step_func(function() {
+      steps[stepCount++]();
+    });
+
+    iframe.onload = next;
+    next();
+  }, 'Navigating to new page should reset to "auto" and navigating back should restore and respect scroll restoration mode');
+
+</script>
+\ No newline at end of file