1 files changed, 139 insertions, 0 deletions
diff --git a/browser/components/preferences/tests/browser_languages_subdialog.js b/browser/components/preferences/tests/browser_languages_subdialog.js
new file mode 100644
index 0000000000..e85ce44ca3
--- /dev/null
+++ b/browser/components/preferences/tests/browser_languages_subdialog.js
@@ -0,0 +1,139 @@
+add_task(async function () {
+  await openPreferencesViaOpenPreferencesAPI("general", { leaveOpen: true });
+  const contentDocument = gBrowser.contentDocument;
+  let dialogOverlay = content.gSubDialog._preloadDialog._overlay;
+
+  async function languagesSubdialogOpened() {
+    const promiseSubDialogLoaded = promiseLoadSubDialog(
+      "chrome://browser/content/preferences/dialogs/languages.xhtml"
+    );
+    contentDocument.getElementById("chooseLanguage").click();
+    const win = await promiseSubDialogLoaded;
+    dialogOverlay = content.gSubDialog._topDialog._overlay;
+    ok(!BrowserTestUtils.is_hidden(dialogOverlay), "The dialog is visible.");
+    return win;
+  }
+
+  function acceptLanguagesSubdialog(win) {
+    const button = win.document.querySelector("dialog").getButton("accept");
+    button.doCommand();
+  }
+
+  ok(BrowserTestUtils.is_hidden(dialogOverlay), "The dialog is invisible.");
+  let win = await languagesSubdialogOpened();
+  ok(
+    win.document.getElementById("spoofEnglish").hidden,
+    "The 'Request English' checkbox is hidden."
+  );
+  acceptLanguagesSubdialog(win);
+  ok(BrowserTestUtils.is_hidden(dialogOverlay), "The dialog is invisible.");
+
+  await SpecialPowers.pushPrefEnv({
+    set: [["intl.accept_languages", "en-US,en-XX,foo"]],
+  });
+  win = await languagesSubdialogOpened();
+  let activeLanguages = win.document.getElementById("activeLanguages").children;
+  ok(
+    activeLanguages[0].id == "en-us",
+    "The ID for 'en-US' locale code is correctly set."
+  );
+  ok(
+    activeLanguages[0].firstChild.value == "English (United States) [en-us]",
+    "The name for known 'en-US' locale code is correctly resolved."
+  );
+  ok(
+    activeLanguages[1].id == "en-xx",
+    "The ID for 'en-XX' locale code is correctly set."
+  );
+  ok(
+    activeLanguages[1].firstChild.value == "English [en-xx]",
+    "The name for unknown 'en-XX' locale code is resolved using 'en'."
+  );
+  ok(
+    activeLanguages[2].firstChild.value == " [foo]",
+    "The name for unknown 'foo' locale code is empty."
+  );
+  acceptLanguagesSubdialog(win);
+  await SpecialPowers.popPrefEnv();
+
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["privacy.resistFingerprinting", true],
+      ["privacy.spoof_english", 0],
+    ],
+  });
+
+  win = await languagesSubdialogOpened();
+  ok(
+    !win.document.getElementById("spoofEnglish").hidden,
+    "The 'Request English' checkbox isn't hidden."
+  );
+  ok(
+    !win.document.getElementById("spoofEnglish").checked,
+    "The 'Request English' checkbox isn't checked."
+  );
+  is(
+    win.Preferences.get("privacy.spoof_english").value,
+    0,
+    "The privacy.spoof_english pref is set to 0."
+  );
+
+  win.document.getElementById("spoofEnglish").checked = true;
+  win.document.getElementById("spoofEnglish").doCommand();
+  ok(
+    win.document.getElementById("spoofEnglish").checked,
+    "The 'Request English' checkbox is checked."
+  );
+  is(
+    win.Preferences.get("privacy.spoof_english").value,
+    2,
+    "The privacy.spoof_english pref is set to 2."
+  );
+  acceptLanguagesSubdialog(win);
+
+  win = await languagesSubdialogOpened();
+  ok(
+    !win.document.getElementById("spoofEnglish").hidden,
+    "The 'Request English' checkbox isn't hidden."
+  );
+  ok(
+    win.document.getElementById("spoofEnglish").checked,
+    "The 'Request English' checkbox is checked."
+  );
+  is(
+    win.Preferences.get("privacy.spoof_english").value,
+    2,
+    "The privacy.spoof_english pref is set to 2."
+  );
+
+  win.document.getElementById("spoofEnglish").checked = false;
+  win.document.getElementById("spoofEnglish").doCommand();
+  ok(
+    !win.document.getElementById("spoofEnglish").checked,
+    "The 'Request English' checkbox isn't checked."
+  );
+  is(
+    win.Preferences.get("privacy.spoof_english").value,
+    1,
+    "The privacy.spoof_english pref is set to 1."
+  );
+  acceptLanguagesSubdialog(win);
+
+  win = await languagesSubdialogOpened();
+  ok(
+    !win.document.getElementById("spoofEnglish").hidden,
+    "The 'Request English' checkbox isn't hidden."
+  );
+  ok(
+    !win.document.getElementById("spoofEnglish").checked,
+    "The 'Request English' checkbox isn't checked."
+  );
+  is(
+    win.Preferences.get("privacy.spoof_english").value,
+    1,
+    "The privacy.spoof_english pref is set to 1."
+  );
+  acceptLanguagesSubdialog(win);
+
+  gBrowser.removeCurrentTab();
+});