public void IsSatisfiedBy_NoOperator_False()
{
// Arrange
var alertCriteria = new AlertCriteria();
var spec = new PriceSpecification(alertCriteria);
var message = new AlertEvaluationMessage();
// Act
var result = spec.IsSatisfiedBy(message);
// Assert
result.Should().BeFalse();
}
public void IsSatisfiedBy_LessThanOrEqual_LastPriceEqualLevel_PrevLastPriceGreaterThanLevel_True()
{
// Arrange
var alertCriteria = new AlertCriteria {
Operator = CriteriaOperator.LessThanOrEqualTo, Level = 50
};
var spec = new PriceSpecification(alertCriteria);
var message = new AlertEvaluationMessage {
LastPrice = 50, PreviousLastPrice = 50.1M
};
// Act
var result = spec.IsSatisfiedBy(message);
// Assert
result.Should().BeTrue();
}
public void IsSatisfiedBy_EqualTo_LastPriceLessThanLevel_PrevLastPriceEqualLevel_False()
{
// Arrange
var alertCriteria = new AlertCriteria {
Operator = CriteriaOperator.Equals, Level = 50
};
var spec = new PriceSpecification(alertCriteria);
var message = new AlertEvaluationMessage {
LastPrice = 49, PreviousLastPrice = 50
};
// Act
var result = spec.IsSatisfiedBy(message);
// Assert
result.Should().BeFalse();
}