1 files changed, 164 insertions, 0 deletions
diff --git a/accessible/tests/browser/fission/browser_nested_iframe.js b/accessible/tests/browser/fission/browser_nested_iframe.js
new file mode 100644
index 0000000000..d6600a2d5e
--- /dev/null
+++ b/accessible/tests/browser/fission/browser_nested_iframe.js
@@ -0,0 +1,164 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+const NESTED_IFRAME_DOC_BODY_ID = "nested-iframe-body";
+const NESTED_IFRAME_ID = "nested-iframe";
+// eslint-disable-next-line @microsoft/sdl/no-insecure-url
+const nestedURL = new URL(`http://example.com/document-builder.sjs`);
+nestedURL.searchParams.append(
+  "html",
+  `<html>
+      <head>
+        <meta charset="utf-8"/>
+        <title>Accessibility Nested Iframe Frame Test</title>
+      </head>
+      <body id="${NESTED_IFRAME_DOC_BODY_ID}">
+        <table id="table">
+          <tr>
+            <td>cell1</td>
+            <td>cell2</td>
+          </tr>
+        </table>
+        <ul id="ul">
+          <li id="li">item1</li>
+        </ul>
+      </body>
+    </html>`
+);
+
+function getOsPid(browsingContext) {
+  return browsingContext.currentWindowGlobal.osPid;
+}
+
+addAccessibleTask(
+  `<iframe id="${NESTED_IFRAME_ID}" src="${nestedURL.href}"/>`,
+  async function (browser, iframeDocAcc, contentDocAcc) {
+    ok(iframeDocAcc, "IFRAME document accessible is present");
+    let nestedDocAcc = findAccessibleChildByID(
+      iframeDocAcc,
+      NESTED_IFRAME_DOC_BODY_ID
+    );
+    let waitForNestedDocLoad = false;
+    if (nestedDocAcc) {
+      const state = {};
+      nestedDocAcc.getState(state, {});
+      if (state.value & STATE_BUSY) {
+        info("Nested IFRAME document accessible is present but busy");
+        waitForNestedDocLoad = true;
+      } else {
+        ok(true, "Nested IFRAME document accessible is present and ready");
+      }
+    } else {
+      info("Nested IFRAME document accessible is not present yet");
+      waitForNestedDocLoad = true;
+    }
+    if (waitForNestedDocLoad) {
+      info("Waiting for doc load complete on nested iframe document");
+      nestedDocAcc = (
+        await waitForEvent(
+          EVENT_DOCUMENT_LOAD_COMPLETE,
+          NESTED_IFRAME_DOC_BODY_ID
+        )
+      ).accessible;
+    }
+
+    if (gIsRemoteIframe) {
+      isnot(
+        getOsPid(browser.browsingContext),
+        getOsPid(browser.browsingContext.children[0]),
+        `Content and IFRAME documents are in separate processes.`
+      );
+      isnot(
+        getOsPid(browser.browsingContext),
+        getOsPid(browser.browsingContext.children[0].children[0]),
+        `Content and nested IFRAME documents are in separate processes.`
+      );
+      isnot(
+        getOsPid(browser.browsingContext.children[0]),
+        getOsPid(browser.browsingContext.children[0].children[0]),
+        `IFRAME and nested IFRAME documents are in separate processes.`
+      );
+    } else {
+      is(
+        getOsPid(browser.browsingContext),
+        getOsPid(browser.browsingContext.children[0]),
+        `Content and IFRAME documents are in same processes.`
+      );
+      if (gFissionBrowser) {
+        isnot(
+          getOsPid(browser.browsingContext.children[0]),
+          getOsPid(browser.browsingContext.children[0].children[0]),
+          `IFRAME and nested IFRAME documents are in separate processes.`
+        );
+      } else {
+        is(
+          getOsPid(browser.browsingContext),
+          getOsPid(browser.browsingContext.children[0].children[0]),
+          `Content and nested IFRAME documents are in same processes.`
+        );
+      }
+    }
+
+    const tree = {
+      DOCUMENT: [
+        {
+          INTERNAL_FRAME: [
+            {
+              DOCUMENT: [
+                {
+                  INTERNAL_FRAME: [
+                    {
+                      DOCUMENT: [
+                        {
+                          TABLE: [
+                            {
+                              ROW: [
+                                { CELL: [{ TEXT_LEAF: [] }] },
+                                { CELL: [{ TEXT_LEAF: [] }] },
+                              ],
+                            },
+                          ],
+                        },
+                        {
+                          LIST: [
+                            {
+                              LISTITEM: [
+                                { LISTITEM_MARKER: [] },
+                                { TEXT_LEAF: [] },
+                              ],
+                            },
+                          ],
+                        },
+                      ],
+                    },
+                  ],
+                },
+              ],
+            },
+          ],
+        },
+      ],
+    };
+    testAccessibleTree(contentDocAcc, tree);
+
+    const nestedIframeAcc = iframeDocAcc.getChildAt(0);
+    is(
+      nestedIframeAcc.getChildAt(0),
+      nestedDocAcc,
+      "Document for nested IFRAME matches."
+    );
+
+    is(
+      nestedDocAcc.parent,
+      nestedIframeAcc,
+      "Nested IFRAME document's parent matches the nested IFRAME."
+    );
+  },
+  { topLevel: false, iframe: true, remoteIframe: true }
+);