1 files changed, 319 insertions, 0 deletions
diff --git a/docshell/test/browser/browser_isInitialDocument.js b/docshell/test/browser/browser_isInitialDocument.js
new file mode 100644
index 0000000000..03265c8e3e
--- /dev/null
+++ b/docshell/test/browser/browser_isInitialDocument.js
@@ -0,0 +1,319 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tag every new WindowGlobalParent with an expando indicating whether or not
+// they were an initial document when they were created for the duration of this
+// test.
+function wasInitialDocumentObserver(subject) {
+  subject._test_wasInitialDocument = subject.isInitialDocument;
+}
+Services.obs.addObserver(wasInitialDocumentObserver, "window-global-created");
+SimpleTest.registerCleanupFunction(function () {
+  Services.obs.removeObserver(
+    wasInitialDocumentObserver,
+    "window-global-created"
+  );
+});
+
+add_task(async function new_about_blank_tab() {
+  await BrowserTestUtils.withNewTab("about:blank", async browser => {
+    is(
+      browser.browsingContext.currentWindowGlobal.isInitialDocument,
+      false,
+      "After loading an actual, final about:blank in the tab, the field is false"
+    );
+  });
+});
+
+add_task(async function iframe_initial_about_blank() {
+  await BrowserTestUtils.withNewTab(
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example.com/document-builder.sjs?html=com",
+    async browser => {
+      info("Create an iframe without any explicit location");
+      await SpecialPowers.spawn(browser, [], async () => {
+        const iframe = content.document.createElement("iframe");
+        // Add the iframe to the DOM tree in order to be able to have its browsingContext
+        content.document.body.appendChild(iframe);
+        const { browsingContext } = iframe;
+
+        is(
+          iframe.contentDocument.isInitialDocument,
+          true,
+          "The field is true on just-created iframes"
+        );
+        let beforeLoadPromise = SpecialPowers.spawnChrome(
+          [browsingContext],
+          bc => [
+            bc.currentWindowGlobal.isInitialDocument,
+            bc.currentWindowGlobal._test_wasInitialDocument,
+          ]
+        );
+
+        await new Promise(resolve => {
+          iframe.addEventListener("load", resolve, { once: true });
+        });
+        is(
+          iframe.contentDocument.isInitialDocument,
+          false,
+          "The field is false after having loaded the final about:blank document"
+        );
+        let afterLoadPromise = SpecialPowers.spawnChrome(
+          [browsingContext],
+          bc => [
+            bc.currentWindowGlobal.isInitialDocument,
+            bc.currentWindowGlobal._test_wasInitialDocument,
+          ]
+        );
+
+        // Wait to await the parent process promises, so we can't miss the "load" event.
+        let [beforeIsInitial, beforeWasInitial] = await beforeLoadPromise;
+        is(beforeIsInitial, true, "before load is initial in parent");
+        is(beforeWasInitial, true, "before load was initial in parent");
+        let [afterIsInitial, afterWasInitial] = await afterLoadPromise;
+        is(afterIsInitial, false, "after load is not initial in parent");
+        is(afterWasInitial, true, "after load was initial in parent");
+        iframe.remove();
+      });
+
+      info("Create an iframe with a cross origin location");
+      const iframeBC = await SpecialPowers.spawn(browser, [], async () => {
+        const iframe = content.document.createElement("iframe");
+        await new Promise(resolve => {
+          iframe.addEventListener("load", resolve, { once: true });
+          iframe.src =
+            // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+            "http://example.org/document-builder.sjs?html=org-iframe";
+          content.document.body.appendChild(iframe);
+        });
+
+        return iframe.browsingContext;
+      });
+
+      is(
+        iframeBC.currentWindowGlobal.isInitialDocument,
+        false,
+        "The field is true after having loaded the final document"
+      );
+    }
+  );
+});
+
+add_task(async function window_open() {
+  async function testWindowOpen({ browser, args, isCrossOrigin, willLoad }) {
+    info(`Open popup with ${JSON.stringify(args)}`);
+    const onNewTab = BrowserTestUtils.waitForNewTab(
+      gBrowser,
+      args[0] || "about:blank"
+    );
+    await SpecialPowers.spawn(
+      browser,
+      [args, isCrossOrigin, willLoad],
+      async (args, crossOrigin, willLoad) => {
+        const win = content.window.open(...args);
+        is(
+          win.document.isInitialDocument,
+          true,
+          "The field is true right after calling window.open()"
+        );
+        let beforeLoadPromise = SpecialPowers.spawnChrome(
+          [win.browsingContext],
+          bc => [
+            bc.currentWindowGlobal.isInitialDocument,
+            bc.currentWindowGlobal._test_wasInitialDocument,
+          ]
+        );
+
+        // In cross origin, it is harder to watch for new document load, and if
+        // no argument is passed no load will happen.
+        if (!crossOrigin && willLoad) {
+          await new Promise(r =>
+            win.addEventListener("load", r, { once: true })
+          );
+          is(
+            win.document.isInitialDocument,
+            false,
+            "The field becomes false right after the popup document is loaded"
+          );
+        }
+
+        // Perform the await after the load to avoid missing it.
+        let [beforeIsInitial, beforeWasInitial] = await beforeLoadPromise;
+        is(beforeIsInitial, true, "before load is initial in parent");
+        is(beforeWasInitial, true, "before load was initial in parent");
+      }
+    );
+    const newTab = await onNewTab;
+    const windowGlobal =
+      newTab.linkedBrowser.browsingContext.currentWindowGlobal;
+    if (willLoad) {
+      is(
+        windowGlobal.isInitialDocument,
+        false,
+        "The field is false in the parent process after having loaded the final document"
+      );
+    } else {
+      is(
+        windowGlobal.isInitialDocument,
+        true,
+        "The field remains true in the parent process as nothing will be loaded"
+      );
+    }
+    BrowserTestUtils.removeTab(newTab);
+  }
+
+  await BrowserTestUtils.withNewTab(
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example.com/document-builder.sjs?html=com",
+    async browser => {
+      info("Use window.open() with cross-origin document");
+      await testWindowOpen({
+        browser,
+        // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+        args: ["http://example.org/document-builder.sjs?html=org-popup"],
+        isCrossOrigin: true,
+        willLoad: true,
+      });
+
+      info("Use window.open() with same-origin document");
+      await testWindowOpen({
+        browser,
+        // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+        args: ["http://example.com/document-builder.sjs?html=com-popup"],
+        isCrossOrigin: false,
+        willLoad: true,
+      });
+
+      info("Use window.open() with final about:blank document");
+      await testWindowOpen({
+        browser,
+        args: ["about:blank"],
+        isCrossOrigin: false,
+        willLoad: true,
+      });
+
+      info("Use window.open() with no argument");
+      await testWindowOpen({
+        browser,
+        args: [],
+        isCrossOrigin: false,
+        willLoad: false,
+      });
+    }
+  );
+});
+
+add_task(async function document_open() {
+  await BrowserTestUtils.withNewTab(
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example.com/document-builder.sjs?html=com",
+    async browser => {
+      is(browser.browsingContext.currentWindowGlobal.isInitialDocument, false);
+      await SpecialPowers.spawn(browser, [], async () => {
+        const iframe = content.document.createElement("iframe");
+        // Add the iframe to the DOM tree in order to be able to have its browsingContext
+        content.document.body.appendChild(iframe);
+        const { browsingContext } = iframe;
+
+        // Check the state before the call in both parent and content.
+        is(
+          iframe.contentDocument.isInitialDocument,
+          true,
+          "Is an initial document before calling document.open"
+        );
+        let beforeOpenParentPromise = SpecialPowers.spawnChrome(
+          [browsingContext],
+          bc => [
+            bc.currentWindowGlobal.isInitialDocument,
+            bc.currentWindowGlobal._test_wasInitialDocument,
+            bc.currentWindowGlobal.innerWindowId,
+          ]
+        );
+
+        // Run the `document.open` call with reduced permissions.
+        iframe.contentWindow.eval(`
+          document.open();
+          document.write("new document");
+          document.close();
+        `);
+
+        is(
+          iframe.contentDocument.isInitialDocument,
+          false,
+          "Is no longer an initial document after calling document.open"
+        );
+        let [afterIsInitial, afterWasInitial, afterID] =
+          await SpecialPowers.spawnChrome([browsingContext], bc => [
+            bc.currentWindowGlobal.isInitialDocument,
+            bc.currentWindowGlobal._test_wasInitialDocument,
+            bc.currentWindowGlobal.innerWindowId,
+          ]);
+        let [beforeIsInitial, beforeWasInitial, beforeID] =
+          await beforeOpenParentPromise;
+        is(beforeIsInitial, true, "Should be initial before in the parent");
+        is(beforeWasInitial, true, "Was initial before in the parent");
+        is(afterIsInitial, false, "Should not be initial after in the parent");
+        is(afterWasInitial, true, "Was initial after in the parent");
+        is(beforeID, afterID, "Should be the same WindowGlobalParent");
+      });
+    }
+  );
+});
+
+add_task(async function windowless_browser() {
+  info("Create a Windowless browser");
+  const browser = Services.appShell.createWindowlessBrowser(false);
+  const { browsingContext } = browser;
+  is(
+    browsingContext.currentWindowGlobal.isInitialDocument,
+    true,
+    "The field is true for a freshly created WindowlessBrowser"
+  );
+  is(
+    browser.currentURI.spec,
+    "about:blank",
+    "The location is immediately set to about:blank"
+  );
+
+  const principal = Services.scriptSecurityManager.getSystemPrincipal();
+  browser.docShell.createAboutBlankDocumentViewer(principal, principal);
+  is(
+    browsingContext.currentWindowGlobal.isInitialDocument,
+    false,
+    "The field becomes false when creating an artificial blank document"
+  );
+
+  info("Load a final about:blank document in it");
+  const onLocationChange = new Promise(resolve => {
+    let wpl = {
+      QueryInterface: ChromeUtils.generateQI([
+        "nsIWebProgressListener",
+        "nsISupportsWeakReference",
+      ]),
+      onLocationChange() {
+        browsingContext.webProgress.removeProgressListener(
+          wpl,
+          Ci.nsIWebProgress.NOTIFY_ALL
+        );
+        resolve();
+      },
+    };
+    browsingContext.webProgress.addProgressListener(
+      wpl,
+      Ci.nsIWebProgress.NOTIFY_ALL
+    );
+  });
+  browser.loadURI(Services.io.newURI("about:blank"), {
+    triggeringPrincipal: principal,
+  });
+  info("Wait for the location change");
+  await onLocationChange;
+  is(
+    browsingContext.currentWindowGlobal.isInitialDocument,
+    false,
+    "The field is false after the location change event"
+  );
+  browser.close();
+});