Add utility function to determine if a locale is valid syntax; this will...

chrome/common/extensions/extension_l10n_util_unittest.cc

Index: chrome/common/extensions/extension_l10n_util_unittest.cc
===================================================================
--- chrome/common/extensions/extension_l10n_util_unittest.cc	(revision 67716)
+++ chrome/common/extensions/extension_l10n_util_unittest.cc	(working copy)
@@ -225,6 +225,42 @@
   EXPECT_EQ("sr", locales[2]);
 }
 
+TEST(ExtensionL10nUtil, IsValidLocaleSyntax) {
+  // Test valid locales.
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("en"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("fr"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("de"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("pt"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("zh"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("fil"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("haw"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("en-US"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("en_US"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("en_GB"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("pt-BR"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("zh_Hans"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("zh_Hans_CN"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("zh_Hant"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("zh_Hant_TW"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("fr_CA"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("i-klingon"));
+  EXPECT_EQ(true, extension_l10n_util::IsValidLocaleSyntax("es-021"));
+
+  // Test invalid locales.
+  EXPECT_EQ(false, extension_l10n_util::IsValidLocaleSyntax(""));
+  EXPECT_EQ(false, extension_l10n_util::IsValidLocaleSyntax("x"));
+  EXPECT_EQ(false, extension_l10n_util::IsValidLocaleSyntax("enUS"));
+  EXPECT_EQ(false, extension_l10n_util::IsValidLocaleSyntax("zhcn"));
+  EXPECT_EQ(false, extension_l10n_util::IsValidLocaleSyntax("en.US"));
+  EXPECT_EQ(false, extension_l10n_util::IsValidLocaleSyntax("en#US"));
+  EXPECT_EQ(false, extension_l10n_util::IsValidLocaleSyntax("-en-US"));
+  EXPECT_EQ(false, extension_l10n_util::IsValidLocaleSyntax("en-US-"));
+  EXPECT_EQ(false, extension_l10n_util::IsValidLocaleSyntax("Latin"));
+  EXPECT_EQ(false, extension_l10n_util::IsValidLocaleSyntax("German"));
+  EXPECT_EQ(false, extension_l10n_util::IsValidLocaleSyntax("pt--BR"));
+  EXPECT_EQ(false, extension_l10n_util::IsValidLocaleSyntax("sl-macedonia"));
+}
+
 // Caller owns the returned object.
 ExtensionMessageBundle* CreateManifestBundle() {
   linked_ptr<DictionaryValue> catalog(new DictionaryValue);