1 files changed, 85 insertions, 0 deletions
diff --git a/toolkit/components/windowwatcher/test/browser_new_remote_window_flags.js b/toolkit/components/windowwatcher/test/browser_new_remote_window_flags.js
new file mode 100644
index 0000000000..06a15d123c
--- /dev/null
+++ b/toolkit/components/windowwatcher/test/browser_new_remote_window_flags.js
@@ -0,0 +1,85 @@
+/**
+ * Tests that when a remote browser opens a new window that the
+ * newly opened window is also remote.
+ */
+
+const ANCHOR_PAGE = `data:text/html,<a href="about:blank" target="_blank">Click me!</a>`;
+const SCRIPT_PAGE = `data:text/html,<script>window.open("about:blank", "_blank");</script>`;
+
+// This magic value of 2 means that by default, when content tries
+// to open a new window, it'll actually open in a new window instead
+// of a new tab.
+add_setup(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [["browser.link.open_newwindow", 2]],
+  });
+});
+
+function assertFlags(win) {
+  let docShell = win.docShell;
+  let loadContext = docShell.QueryInterface(Ci.nsILoadContext);
+  let chromeFlags = docShell.treeOwner
+    .QueryInterface(Ci.nsIInterfaceRequestor)
+    .getInterface(Ci.nsIAppWindow).chromeFlags;
+  Assert.ok(
+    loadContext.useRemoteTabs,
+    "Should be using remote tabs on the load context"
+  );
+  Assert.ok(
+    chromeFlags & Ci.nsIWebBrowserChrome.CHROME_REMOTE_WINDOW,
+    "Should have the remoteness chrome flag on the window"
+  );
+}
+
+/**
+ * Content can open a window using a target="_blank" link
+ */
+add_task(async function test_new_remote_window_flags_target_blank() {
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: ANCHOR_PAGE,
+    },
+    async function (browser) {
+      let newWinPromise = BrowserTestUtils.waitForNewWindow();
+      await BrowserTestUtils.synthesizeMouseAtCenter("a", {}, browser);
+      let win = await newWinPromise;
+      assertFlags(win);
+      await BrowserTestUtils.closeWindow(win);
+    }
+  );
+});
+
+/**
+ * Content can open a window using window.open
+ */
+add_task(async function test_new_remote_window_flags_window_open() {
+  let newWinPromise = BrowserTestUtils.waitForNewWindow();
+
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: SCRIPT_PAGE,
+    },
+    async function (browser) {
+      let win = await newWinPromise;
+      assertFlags(win);
+      await BrowserTestUtils.closeWindow(win);
+    }
+  );
+});
+
+/**
+ * Privileged content scripts can also open new windows
+ * using content.open.
+ */
+add_task(async function test_new_remote_window_flags_content_open() {
+  let newWinPromise = BrowserTestUtils.waitForNewWindow();
+  await SpecialPowers.spawn(gBrowser.selectedBrowser, [], async function () {
+    content.open("about:blank", "_blank");
+  });
+
+  let win = await newWinPromise;
+  assertFlags(win);
+  await BrowserTestUtils.closeWindow(win);
+});