Introduce IsMemberOfExtension function into ExtensionIMEUtil.

chromeos/ime/extension_ime_util_unittest.cc

 // Copyright 2013 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 "chromeos/ime/extension_ime_util.h"
 
 #include <string>
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace chromeos {
 
 TEST(ExtensionIMEUtilTest, GetInputMethodIDTest) {
   EXPECT_EQ("_ext_ime_ABCDE12345",
             extension_ime_util::GetInputMethodID("ABCDE", "12345"));
 }
 
 TEST(ExtensionIMEUtilTest, IsExtensionIMETest) {
   EXPECT_TRUE(extension_ime_util::IsExtensionIME(
       extension_ime_util::GetInputMethodID("abcde", "12345")));
   EXPECT_FALSE(extension_ime_util::IsExtensionIME(""));
   EXPECT_FALSE(extension_ime_util::IsExtensionIME("mozc"));
 }
 
+TEST(ExtensionIMEUtilTest, IsMemberOfExtension) {
+  const char* extention1 = "abcdefg";
+  const char* extention2 = "hijklmn";
+  const char* engine_id1 = "12345";
+  const char* engine_id2 = "67890";
+
+  const std::string extention_1_engine_1 =
+      extension_ime_util::GetInputMethodID(extention1, engine_id1);
+  const std::string extention_1_engine_2 =
+      extension_ime_util::GetInputMethodID(extention1, engine_id2);
+
+  EXPECT_TRUE(extension_ime_util::IsMemberOfExtension(extention_1_engine_1,
+                                                      extention1));
+  EXPECT_TRUE(extension_ime_util::IsMemberOfExtension(extention_1_engine_2,
+                                                      extention1));
+  EXPECT_FALSE(extension_ime_util::IsMemberOfExtension(extention_1_engine_1,
+                                                       extention2));
+  EXPECT_FALSE(extension_ime_util::IsMemberOfExtension(extention_1_engine_2,
+                                                       extention2));
+}
+
 }  // namespace chromeos