+// OpenTween - Client of Twitter
+// Copyright (c) 2017 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
+// All rights reserved.
+//
+// This file is part of OpenTween.
+//
+// This program is free software; you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 3 of the License, or (at your option)
+// any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+// for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program. If not, see <http://www.gnu.org/licenses/>, or write to
+// the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+// Boston, MA 02110-1301, USA.
+
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace OpenTween
+{
+ public class ExtensionsTest
+ {
+ [Theory]
+ [InlineData("ja", "ja-JP", true)]
+ [InlineData("ja", "ja", true)]
+ [InlineData("ja-JP", "ja-JP", true)]
+ [InlineData("ja-JP", "ja", false)]
+ // 4 階層以上の親を持つカルチャ
+ // 参照: https://msdn.microsoft.com/ja-jp/library/dd997383(v=vs.100).aspx#%E6%96%B0%E3%81%97%E3%81%84%E7%89%B9%E5%AE%9A%E3%82%AB%E3%83%AB%E3%83%81%E3%83%A3
+ [InlineData("zh-Hant", "zh-TW", true)]
+ [InlineData("zh-Hant", "zh-CHT", true)]
+ [InlineData("zh-Hant", "zh-Hant", true)]
+ [InlineData("zh-Hant", "zh", false)]
+ public void Contains_Test(string thisCultureStr, string thatCultureStr, bool expected)
+ {
+ var thisCulture = new CultureInfo(thisCultureStr);
+ var thatCulture = new CultureInfo(thatCultureStr);
+ Assert.Equal(expected, thisCulture.Contains(thatCulture));
+ }
+
+ public void Contains_InvariantCultureTest()
+ {
+ // InvariantCulture は全てのカルチャを内包する
+ Assert.True(CultureInfo.InvariantCulture.Contains(new CultureInfo("ja")));
+ Assert.True(CultureInfo.InvariantCulture.Contains(CultureInfo.InvariantCulture));
+ }
+ }
+}