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davidalpert/SpoofCulture.cs

Created June 15, 2016 23:13
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Spoof the current CultureInfo in a unit test.
Raw
SpoofCulture.cs
public class SpoofCulture : IDisposable
{
private readonly CultureInfo _previousCultureInfo;
private readonly Thread _threadToSpoof;
public SpoofCulture(CultureInfo cultureToUse, Thread threadToSpoof = null)
{
_threadToSpoof = threadToSpoof ?? Thread.CurrentThread;
_previousCultureInfo = CultureInfo.CurrentCulture;
_threadToSpoof.CurrentCulture = cultureToUse;
}
public void Dispose()
{
_threadToSpoof.CurrentCulture = _previousCultureInfo;
}
}
Raw
SpoofCultureTests.cs
public class SpoofCultureTests
{
[Test]
public void Can_spoof_the_current_culture_on_the_current_thread()
{
var cultureBeforeSpoofing = CultureInfo.CurrentCulture;
var cultureToSpoof = CultureInfo.GetCultures(CultureTypes.SpecificCultures).First();
if (cultureToSpoof.Equals(cultureBeforeSpoofing))
{
cultureToSpoof = CultureInfo.GetCultures(CultureTypes.SpecificCultures).Skip(1).First();
}
Assert.AreEqual(CultureInfo.CurrentCulture, cultureBeforeSpoofing);
Assert.AreNotEqual(CultureInfo.CurrentCulture, cultureToSpoof);
using (new SpoofCulture(cultureToSpoof))
{
Assert.AreEqual(CultureInfo.CurrentCulture, cultureToSpoof);
Assert.AreNotEqual(CultureInfo.CurrentCulture, cultureBeforeSpoofing);
}
Assert.AreEqual(CultureInfo.CurrentCulture, cultureBeforeSpoofing);
Assert.AreNotEqual(CultureInfo.CurrentCulture, cultureToSpoof);
}
}
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