1 files changed, 40 insertions, 0 deletions
diff --git a/browser/components/urlbar/tests/unit/test_UrlbarPrefs.js b/browser/components/urlbar/tests/unit/test_UrlbarPrefs.js
new file mode 100644
index 0000000000..b08a5fff2a
--- /dev/null
+++ b/browser/components/urlbar/tests/unit/test_UrlbarPrefs.js
@@ -0,0 +1,40 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(function test() {
+  Assert.throws(
+    () => UrlbarPrefs.get("browser.migration.version"),
+    /Trying to access an unknown pref/,
+    "Should throw when passing an untracked pref"
+  );
+
+  Assert.throws(
+    () => UrlbarPrefs.set("browser.migration.version", 100),
+    /Trying to access an unknown pref/,
+    "Should throw when passing an untracked pref"
+  );
+  Assert.throws(
+    () => UrlbarPrefs.set("maxRichResults", "10"),
+    /Invalid value/,
+    "Should throw when passing an invalid value type"
+  );
+
+  Assert.deepEqual(UrlbarPrefs.get("formatting.enabled"), true);
+  UrlbarPrefs.set("formatting.enabled", false);
+  Assert.deepEqual(UrlbarPrefs.get("formatting.enabled"), false);
+
+  Assert.deepEqual(UrlbarPrefs.get("maxRichResults"), 10);
+  UrlbarPrefs.set("maxRichResults", 6);
+  Assert.deepEqual(UrlbarPrefs.get("maxRichResults"), 6);
+
+  Assert.deepEqual(UrlbarPrefs.get("autoFill.stddevMultiplier"), 0.0);
+  UrlbarPrefs.set("autoFill.stddevMultiplier", 0.01);
+  // Due to rounding errors, floats are slightly imprecise, so we can't
+  // directly compare what we set to what we retrieve.
+  Assert.deepEqual(
+    parseFloat(UrlbarPrefs.get("autoFill.stddevMultiplier").toFixed(2)),
+    0.01
+  );
+});