1 files changed, 40 insertions, 0 deletions
diff --git a/browser/components/preferences/tests/browser_ensure_prefs_bindings_initted.js b/browser/components/preferences/tests/browser_ensure_prefs_bindings_initted.js
new file mode 100644
index 0000000000..e193181200
--- /dev/null
+++ b/browser/components/preferences/tests/browser_ensure_prefs_bindings_initted.js
@@ -0,0 +1,40 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/*
+ * Check that panes that aren't the default have their bindings initialized
+ * and 'preference' attributes are processed correctly.
+ */
+add_task(async function test_prefs_bindings_initted() {
+  await openPreferencesViaOpenPreferencesAPI("general", { leaveOpen: true });
+  let doc = gBrowser.selectedBrowser.contentDocument;
+  let prefReader = doc.ownerGlobal.Preferences;
+  let prefBasedCheckboxes = Array.from(
+    doc.querySelectorAll("checkbox[preference]")
+  );
+
+  // Then check all the preferences:
+  for (let checkbox of prefBasedCheckboxes) {
+    let pref = checkbox.getAttribute("preference");
+    if (Services.prefs.getPrefType(pref) == Services.prefs.PREF_BOOL) {
+      info(`Waiting for checkbox to match pref ${pref}`);
+      // Ensure the task setting up prefs has run.
+      await BrowserTestUtils.waitForMutationCondition(
+        checkbox,
+        { attributeFilter: ["checked"] },
+        () => checkbox.checked == prefReader.get(pref).value
+      );
+      is(
+        checkbox.checked,
+        prefReader.get(pref).value,
+        `Checkbox value should match preference (${pref}).`
+      );
+      // Ignore all other types. The mapping is normally non-trivial and done
+      // using syncfrompreference handlers in JS.
+    }
+  }
+
+  BrowserTestUtils.removeTab(gBrowser.selectedTab);
+});