1 files changed, 52 insertions, 0 deletions
diff --git a/toolkit/components/aboutconfig/test/browser/browser_basic.js b/toolkit/components/aboutconfig/test/browser/browser_basic.js
new file mode 100644
index 0000000000..014a98df97
--- /dev/null
+++ b/toolkit/components/aboutconfig/test/browser/browser_basic.js
@@ -0,0 +1,52 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_setup(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      [
+        "test.aboutconfig.userValueLikeLocalized",
+        "chrome://test/locale/testing.properties",
+      ],
+    ],
+  });
+});
+
+add_task(async function test_load_title() {
+  await AboutConfigTest.withNewTab(async function () {
+    Assert.equal(this.document.title, "Advanced Preferences");
+  });
+});
+
+add_task(async function test_load_settings() {
+  await AboutConfigTest.withNewTab(async function () {
+    // Test if page contains elements.
+    Assert.equal(this.getRow(PREF_NUMBER_DEFAULT_ZERO).value, 0);
+    Assert.equal(this.getRow(PREF_STRING_DEFAULT_EMPTY).value, "");
+
+    // Test if the modified state is displayed for the right prefs.
+    Assert.ok(
+      !this.getRow(PREF_BOOLEAN_DEFAULT_TRUE).hasClass("has-user-value")
+    );
+    Assert.ok(
+      this.getRow(PREF_BOOLEAN_USERVALUE_TRUE).hasClass("has-user-value")
+    );
+
+    // Test to see if values are localized, sampling from different files. If
+    // any of these are removed or their value changes, just update the value
+    // here or point to a different preference in the same file.
+    Assert.equal(this.getRow("font.language.group").value, "x-western");
+    Assert.equal(this.getRow("intl.ellipsis").value, "\u2026");
+
+    // Test to see if user created value is not empty string when it matches
+    // /^chrome:\/\/.+\/locale\/.+\.properties/.
+    Assert.equal(
+      this.getRow("test.aboutconfig.userValueLikeLocalized").value,
+      "chrome://test/locale/testing.properties"
+    );
+
+    // Test to see if empty string when value matches
+    // /^chrome:\/\/.+\/locale\/.+\.properties/ and an exception is thrown.
+    Assert.equal(this.getRow(PREF_STRING_LOCALIZED_MISSING).value, "");
+  });
+});