Add LayoutLocale class

third_party/WebKit/Source/platform/LayoutLocaleTest.cpp

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "platform/LayoutLocale.h"
+
+#include "platform/Logging.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+TEST(LayoutLocaleTest, Get)
+{
+    LayoutLocale::clearForTesting();
+
+    EXPECT_EQ(nullptr, LayoutLocale::get(nullAtom));
+
+    EXPECT_EQ(emptyAtom, LayoutLocale::get(emptyAtom)->localeString());
+
+    EXPECT_TRUE(equalIgnoringCase("en-us", LayoutLocale::get("en-us")->localeString()));
+    EXPECT_TRUE(equalIgnoringCase("ja-jp", LayoutLocale::get("ja-jp")->localeString()));
+
+    LayoutLocale::clearForTesting();
+}
+
+TEST(LayoutLocaleTest, GetCaseInsensitive)
+{
+    const LayoutLocale* enUS = LayoutLocale::get("en-us");
+    EXPECT_EQ(enUS, LayoutLocale::get("en-US"));
+}
+
+} // namespace blink