1 files changed, 66 insertions, 0 deletions
diff --git a/testing/web-platform/tests/portals/history/resources/portal-manipulate-history.html b/testing/web-platform/tests/portals/history/resources/portal-manipulate-history.html
new file mode 100644
index 0000000000..3e25f0e6f2
--- /dev/null
+++ b/testing/web-platform/tests/portals/history/resources/portal-manipulate-history.html
@@ -0,0 +1,66 @@
+<!DOCTYPE html>
+<script src="portal-harness.js"></script>
+<body>
+<script>
+  function testHistoryPushStateInPortal() {
+    assert(history.length == 1, 'Initial history length');
+    assert(!history.state, 'Initial history state');
+
+    history.pushState('teststate', null, null);
+
+    assert(history.length == 1, 'History length unchanged');
+    assert(history.state == 'teststate', 'Update state');
+  }
+
+  function testHistoryReplaceStateInPortal() {
+    assert(history.length == 1, 'Initial history length');
+    assert(!history.state, 'Initial history state');
+
+    history.replaceState('teststate', null, null);
+
+    assert(history.length == 1, 'History length unchanged');
+    assert(history.state == 'teststate', 'Update state');
+  }
+
+  function testLocationAssignInPortal() {
+    assert(history.length == 1, 'Initial history length');
+    let initialLocation = location.href;
+    location.assign('#test');
+
+    assert(history.length == 1, 'History length unchanged');
+    assert(location.href != initialLocation, 'Update location');
+  }
+
+  function testLocationReplaceInPortal() {
+    assert(history.length == 1, 'Initial history length');
+    let initialLocation = location.href;
+    location.replace('#test');
+
+    assert(history.length == 1, 'History length unchanged');
+    assert(location.href != initialLocation, 'Update location');
+  }
+
+  function testSetLocationHrefInPortal() {
+    assert(history.length == 1, 'Initial history length');
+    let initialLocation = location.href;
+    location.href = '#test';
+
+    assert(history.length == 1, 'History length unchanged');
+    assert(location.href != initialLocation, 'Update location');
+  }
+
+  function testSyntheticAnchorClickInPortal() {
+    assert(history.length == 1, 'Initial history length');
+    let initialLocation = location.href;
+
+    var anchor = document.createElement('a');
+    anchor.href = '#test';
+    document.body.appendChild(anchor);
+
+    anchor.click();
+
+    assert(history.length == 1, 'History length unchanged');
+    assert(location.href != initialLocation, 'Update location');
+  }
+</script>
+</body>