1 files changed, 36 insertions, 0 deletions
diff --git a/modules/libpref/test/gtest/Basics.cpp b/modules/libpref/test/gtest/Basics.cpp
new file mode 100644
index 0000000000..e3e05c6015
--- /dev/null
+++ b/modules/libpref/test/gtest/Basics.cpp
@@ -0,0 +1,36 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+#include "mozilla/Preferences.h"
+
+using namespace mozilla;
+
+TEST(PrefsBasics, Errors)
+{
+  Preferences::SetBool("foo.bool", true, PrefValueKind::Default);
+  Preferences::SetBool("foo.bool", false, PrefValueKind::User);
+  ASSERT_EQ(Preferences::GetBool("foo.bool", false, PrefValueKind::Default),
+            true);
+  ASSERT_EQ(Preferences::GetBool("foo.bool", true, PrefValueKind::User), false);
+
+  Preferences::SetInt("foo.int", -66, PrefValueKind::Default);
+  Preferences::SetInt("foo.int", -77, PrefValueKind::User);
+  ASSERT_EQ(Preferences::GetInt("foo.int", 1, PrefValueKind::Default), -66);
+  ASSERT_EQ(Preferences::GetInt("foo.int", 1, PrefValueKind::User), -77);
+
+  Preferences::SetUint("foo.uint", 88, PrefValueKind::Default);
+  Preferences::SetUint("foo.uint", 99, PrefValueKind::User);
+  ASSERT_EQ(Preferences::GetUint("foo.uint", 1, PrefValueKind::Default), 88U);
+  ASSERT_EQ(Preferences::GetUint("foo.uint", 1, PrefValueKind::User), 99U);
+
+  Preferences::SetFloat("foo.float", 3.33f, PrefValueKind::Default);
+  Preferences::SetFloat("foo.float", 4.44f, PrefValueKind::User);
+  ASSERT_FLOAT_EQ(
+      Preferences::GetFloat("foo.float", 1.0f, PrefValueKind::Default), 3.33f);
+  ASSERT_FLOAT_EQ(Preferences::GetFloat("foo.float", 1.0f, PrefValueKind::User),
+                  4.44f);
+}