1 files changed, 86 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-iframe-element/resources/sandbox-top-navigation-helper.sub.js b/testing/web-platform/tests/html/semantics/embedded-content/the-iframe-element/resources/sandbox-top-navigation-helper.sub.js
new file mode 100644
index 0000000000..bec8f6a64a
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/embedded-content/the-iframe-element/resources/sandbox-top-navigation-helper.sub.js
@@ -0,0 +1,86 @@
+// To use this file, use the following imports:
+// // META: script=/common/dispatcher/dispatcher.js
+// // META: script=/common/get-host-info.sub.js
+// // META: script=/common/utils.js
+// // META: script=/resources/testdriver.js
+// // META: script=/resources/testdriver-vendor.js
+// // META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// // META: script=./resources/sandbox-top-navigation-helper.sub.js
+
+// Helper file that provides various functions to test top-level navigation
+// with various frame and sandbox flag configurations.
+
+async function createNestedIframe(parent, origin, frame_sandbox, header_sandbox)
+{
+  let headers = [];
+  if (header_sandbox) {
+    headers.push([
+      "Content-Security-Policy",
+      "sandbox allow-scripts " + header_sandbox
+    ]);
+  }
+  let iframe_attributes = {};
+  if (frame_sandbox) {
+    iframe_attributes.sandbox = "allow-scripts " + frame_sandbox;
+  }
+  return parent.addIframe({
+    origin: origin,
+    scripts: [
+      '/resources/testdriver.js',
+      '/resources/testdriver-vendor.js',
+    ],
+    headers: headers,
+  }, iframe_attributes);
+}
+
+async function navigateFrameTo(frame, origin) {
+  return frame.navigateToNew({
+    origin: origin,
+    scripts: [
+      '/resources/testdriver.js',
+      '/resources/testdriver-vendor.js',
+    ],
+  });
+}
+
+async function attemptTopNavigation(iframe, should_succeed) {
+  let did_succeed;
+  try {
+    await iframe.executeScript(() => {
+      window.top.location.href =
+          'http://{{hosts[alt][www2]}}:{{ports[http][0]}}';
+    });
+    did_succeed = true;
+  } catch (e) {
+    did_succeed = false;
+  }
+
+  assert_equals(did_succeed, should_succeed,
+      should_succeed ?
+          "The navigation should succeed." :
+          "The navigation should fail.");
+}
+
+async function setupTest() {
+  const rcHelper = new RemoteContextHelper();
+  return rcHelper.addWindow(/*config=*/ null, /*options=*/ {});
+}
+
+async function activate(iframe) {
+  return iframe.executeScript(async () => {
+    let b = document.createElement("button");
+    document.body.appendChild(b);
+
+    // Since test_driver.bless() does not play nicely with the remote context
+    // helper, this is a workaround to trigger user activation in the iframe.
+    // This adds a button to the iframe and then simulates hitting the 'tab' key
+    // twice. Once to focus on the button, and once to trigger user activation
+    // in the iframe (user activation is given to the frame that has focus when
+    // the tab key is pressed, not the frame that ends up getting focus). Note
+    // that this will result in both the parent and this frame getting user
+    // activation. Note that this currently only works for iframes nested 1
+    // level deep.
+    test_driver.set_test_context(window.top);
+    return test_driver.send_keys(document.body, "\uE004\uE004");
+  });
+}