1 files changed, 80 insertions, 0 deletions
diff --git a/browser/components/preferences/tests/browser_keyboardfocus.js b/browser/components/preferences/tests/browser_keyboardfocus.js
new file mode 100644
index 0000000000..bed452b679
--- /dev/null
+++ b/browser/components/preferences/tests/browser_keyboardfocus.js
@@ -0,0 +1,80 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+async function launchPreferences() {
+  let prefs = await openPreferencesViaOpenPreferencesAPI("paneGeneral", {
+    leaveOpen: true,
+  });
+  Assert.equal(prefs.selectedPane, "paneGeneral", "General pane was selected");
+}
+
+add_task(async function () {
+  await launchPreferences();
+  let checkbox = gBrowser.contentDocument.querySelector(
+    "#useFullKeyboardNavigation"
+  );
+  Assert.ok(
+    !Services.prefs.getIntPref("accessibility.tabfocus", undefined),
+    "no pref value should exist"
+  );
+  Assert.ok(
+    !checkbox.checked,
+    "checkbox should be unchecked before clicking on checkbox"
+  );
+
+  checkbox.click();
+
+  Assert.equal(
+    Services.prefs.getIntPref("accessibility.tabfocus"),
+    7,
+    "Prefstore should reflect checkbox's associated numeric value"
+  );
+  Assert.ok(
+    checkbox.checked,
+    "checkbox should be checked after clicking on checkbox"
+  );
+
+  checkbox.click();
+
+  Assert.ok(
+    !checkbox.checked,
+    "checkbox should be unchecked after clicking on checkbox"
+  );
+  Assert.ok(
+    !Services.prefs.getIntPref("accessibility.tabfocus", undefined),
+    "No pref value should exist"
+  );
+
+  BrowserTestUtils.removeTab(gBrowser.selectedTab);
+  SpecialPowers.pushPrefEnv({ set: [["accessibility.tabfocus", 4]] });
+  await launchPreferences();
+  checkbox = gBrowser.contentDocument.querySelector(
+    "#useFullKeyboardNavigation"
+  );
+
+  Assert.ok(
+    !checkbox.checked,
+    "checkbox should stay unchecked after setting non-7 pref value"
+  );
+  Assert.equal(
+    Services.prefs.getIntPref("accessibility.tabfocus", 0),
+    4,
+    "pref should have value in store"
+  );
+
+  BrowserTestUtils.removeTab(gBrowser.selectedTab);
+  SpecialPowers.pushPrefEnv({ set: [["accessibility.tabfocus", 7]] });
+  await launchPreferences();
+  checkbox = gBrowser.contentDocument.querySelector(
+    "#useFullKeyboardNavigation"
+  );
+
+  Assert.equal(
+    Services.prefs.getIntPref("accessibility.tabfocus", 0),
+    7,
+    "Pref value should update after modification"
+  );
+  Assert.ok(checkbox.checked, "checkbox should be checked");
+
+  BrowserTestUtils.removeTab(gBrowser.selectedTab);
+});