1 files changed, 54 insertions, 0 deletions
diff --git a/toolkit/components/aboutconfig/test/browser/browser_locked.js b/toolkit/components/aboutconfig/test/browser/browser_locked.js
new file mode 100644
index 0000000000..fbc62cc4c4
--- /dev/null
+++ b/toolkit/components/aboutconfig/test/browser/browser_locked.js
@@ -0,0 +1,54 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const PREF_STRING_NO_DEFAULT = "test.aboutconfig.a";
+
+add_setup(async function() {
+  await SpecialPowers.pushPrefEnv({
+    set: [[PREF_STRING_NO_DEFAULT, "some value"]],
+  });
+});
+
+add_task(async function test_locked() {
+  registerCleanupFunction(() => {
+    Services.prefs.unlockPref(PREF_STRING_DEFAULT_NOTEMPTY);
+    Services.prefs.unlockPref(PREF_BOOLEAN_DEFAULT_TRUE);
+    Services.prefs.unlockPref(PREF_STRING_NO_DEFAULT);
+  });
+
+  Services.prefs.lockPref(PREF_STRING_DEFAULT_NOTEMPTY);
+  Services.prefs.lockPref(PREF_BOOLEAN_DEFAULT_TRUE);
+  Services.prefs.lockPref(PREF_STRING_NO_DEFAULT);
+
+  await AboutConfigTest.withNewTab(async function() {
+    // Test locked default string pref.
+    let lockedPref = this.getRow(PREF_STRING_DEFAULT_NOTEMPTY);
+    Assert.ok(lockedPref.hasClass("locked"));
+    Assert.equal(lockedPref.value, PREF_STRING_DEFAULT_NOTEMPTY_VALUE);
+    Assert.ok(lockedPref.editColumnButton.classList.contains("button-edit"));
+    Assert.ok(lockedPref.editColumnButton.disabled);
+
+    // Test locked default boolean pref.
+    lockedPref = this.getRow(PREF_BOOLEAN_DEFAULT_TRUE);
+    Assert.ok(lockedPref.hasClass("locked"));
+    Assert.equal(lockedPref.value, "true");
+    Assert.ok(lockedPref.editColumnButton.classList.contains("button-toggle"));
+    Assert.ok(lockedPref.editColumnButton.disabled);
+
+    // Test locked user added pref.
+    lockedPref = this.getRow(PREF_STRING_NO_DEFAULT);
+    Assert.ok(lockedPref.hasClass("locked"));
+    Assert.equal(lockedPref.value, "");
+    Assert.ok(lockedPref.editColumnButton.classList.contains("button-edit"));
+    Assert.ok(lockedPref.editColumnButton.disabled);
+
+    // Test pref not locked.
+    let unlockedPref = this.getRow(PREF_BOOLEAN_USERVALUE_TRUE);
+    Assert.ok(!unlockedPref.hasClass("locked"));
+    Assert.equal(unlockedPref.value, "true");
+    Assert.ok(
+      unlockedPref.editColumnButton.classList.contains("button-toggle")
+    );
+    Assert.ok(!unlockedPref.editColumnButton.disabled);
+  });
+});