public void WhenMinvalueIsNotPresentTheCheckerShouldValidate()
 {
     var datetime = DateTime.Now;
     var result = new DateTimeMinValueCheck("").IsValid(datetime);
     Assert.IsFalse(result);
 }
 public void WhenMinvalueIsNullTheCheckerShouldNotValidate()
 {
     var result = new DateTimeMinValueCheck("").IsValid(null);
     Assert.IsFalse(result);
 }
 public void WhenMinvalueIsPresentTheCheckerShouldNotValidate()
 {
     var result = new DateTimeMinValueCheck("").IsValid(DateTime.MinValue);
     Assert.IsTrue(result);
 }