public void WhenValueToday_ValidationSucceeds()
{
var validator = new FutureDateAttribute();
var instance = new object();
var datetime = (DateTime?)DateTime.UtcNow;
var context = new ValidationContext(instance, null, null);
ValidationResult result = validator.GetValidationResult(datetime, context);
Assert.Same(ValidationResult.Success, result);
}
public void WhenValueInPast_ValidationFails()
{
var validator = new FutureDateAttribute();
var instance = new object();
var datetime = (DateTime?)DateTime.UtcNow.AddDays(-2);
var context = new ValidationContext(instance, null, null);
context.MemberName = "MyDate";
ValidationResult result = validator.GetValidationResult(datetime, context);
Assert.NotSame(ValidationResult.Success, result);
Assert.NotNull(result.ErrorMessage);
}