aspnetcore/test/Microsoft.TestCommon/CultureReplacer.cs

88 lines
3.4 KiB
C#

// Copyright (c) Microsoft Open Technologies, Inc.
// All Rights Reserved
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
// WITHOUT LIMITATION ANY IMPLIED WARRANTIES OR CONDITIONS OF
// TITLE, FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABLITY OR
// NON-INFRINGEMENT.
// See the Apache 2 License for the specific language governing
// permissions and limitations under the License.
using System;
using System.Globalization;
using System.Threading;
namespace Microsoft.TestCommon
{
public class CultureReplacer : IDisposable
{
private const string _defaultCultureName = "en-GB";
private const string _defaultUICultureName = "en-US";
private static readonly CultureInfo _defaultCulture = CultureInfo.GetCultureInfo(_defaultCultureName);
private readonly CultureInfo _originalCulture;
private readonly CultureInfo _originalUICulture;
private readonly long _threadId;
// Culture => Formatting of dates/times/money/etc, defaults to en-GB because en-US is the same as InvariantCulture
// We want to be able to find issues where the InvariantCulture is used, but a specific culture should be.
//
// UICulture => Language
public CultureReplacer(string culture = _defaultCultureName, string uiCulture = _defaultUICultureName)
{
_originalCulture = Thread.CurrentThread.CurrentCulture;
_originalUICulture = Thread.CurrentThread.CurrentUICulture;
_threadId = Thread.CurrentThread.ManagedThreadId;
Thread.CurrentThread.CurrentCulture = CultureInfo.GetCultureInfo(culture);
Thread.CurrentThread.CurrentUICulture = CultureInfo.GetCultureInfo(uiCulture);
}
/// <summary>
/// The name of the culture that is used as the default value for Thread.CurrentCulture when CultureReplacer is used.
/// </summary>
public static string DefaultCultureName
{
get { return _defaultCultureName; }
}
/// <summary>
/// The name of the culture that is used as the default value for Thread.UICurrentCulture when CultureReplacer is used.
/// </summary>
public static string DefaultUICultureName
{
get { return _defaultUICultureName; }
}
/// <summary>
/// The culture that is used as the default value for Thread.CurrentCulture when CultureReplacer is used.
/// </summary>
public static CultureInfo DefaultCulture
{
get { return _defaultCulture; }
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
private void Dispose(bool disposing)
{
if (disposing)
{
Assert.True(Thread.CurrentThread.ManagedThreadId == _threadId, "The current thread is not the same as the thread invoking the constructor. This should never happen.");
Thread.CurrentThread.CurrentCulture = _originalCulture;
Thread.CurrentThread.CurrentUICulture = _originalUICulture;
}
}
}
}