public static void Ctor(PlatformID id, string versionString)
{
var os = new OperatingSystem(id, new Version(versionString));
Assert.Equal(id, os.Platform);
Assert.Equal(new Version(versionString), os.Version);
Assert.Equal(string.Empty, os.ServicePack);
Assert.NotEmpty(os.VersionString);
Assert.Equal(os.VersionString, os.ToString());
}