Add a "ToUpper" method

app/l10n_util_unittest.cc

 // Copyright (c) 2006-2008 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 "build/build_config.h"
 
 #include "app/app_paths.h"
 #include "app/l10n_util.h"
 #if !defined(OS_MACOSX)
 #include "app/test/data/resource.h"
@@ skipping 421 matching lines @@
   EXPECT_EQ(l10n_util::LEFT_TO_RIGHT, GetTextDirection("en"));
   // Chinese in China with '-'.
   EXPECT_EQ(l10n_util::LEFT_TO_RIGHT, GetTextDirection("zh-CN"));
   // Filipino : 3-letter code
   EXPECT_EQ(l10n_util::LEFT_TO_RIGHT, GetTextDirection("fil"));
   // Russian
   EXPECT_EQ(l10n_util::LEFT_TO_RIGHT, GetTextDirection("ru"));
   // Japanese that uses multiple scripts
   EXPECT_EQ(l10n_util::LEFT_TO_RIGHT, GetTextDirection("ja"));
 }
+
+// Test upper and lower case string conversion.
+TEST_F(L10nUtilTest, UpperLower) {
+  string16 mixed(ASCIIToUTF16("Text with UPPer & lowER casE."));
+  const string16 expected_lower(ASCIIToUTF16("text with upper & lower case."));
+  const string16 expected_upper(ASCIIToUTF16("TEXT WITH UPPER & LOWER CASE."));
+
+  string16 result = l10n_util::ToLower(mixed);
+  EXPECT_EQ(result, expected_lower);
+
+  result = l10n_util::ToUpper(mixed);
+  EXPECT_EQ(result, expected_upper);
+}
+