public void When_converting_DBNull_to_long()
 {
     foreach (var culture in allCultures)
     {
         NumericConversionsSpecs.When_converting_DBNull_to <long>(culture);
         NumericConversionsSpecs.When_converting_DBNull_to <long>(culture, -1);
     }
 }
 public void When_converting_DBNull_to_numeric()
 {
     foreach (var culture in allCultures)
     {
         NumericConversionsSpecs.When_converting_DBNull_to <TNumeric>(culture);
         NumericConversionsSpecs.When_converting_DBNull_to <TNumeric>(culture, this.ChangedNumericDefault());
     }
 }