private ISpecification <AlertEvaluationMessage> CreateCompositeSpecification(
AlertCriteria alertCriteria)
{
CompositeSpecification <AlertEvaluationMessage> specification;
if (alertCriteria.Operator == CriteriaOperator.And)
{
specification = new AndSpecification <AlertEvaluationMessage>();
}
else if (alertCriteria.Operator == CriteriaOperator.Or)
{
specification = new OrSpecification <AlertEvaluationMessage>();
}
else
{
throw new ApplicationException("Operator not supported.");
}
foreach (var c in alertCriteria.ChildrenCriteria)
{
specification.AddChildSpecification(CreateSpecification(c));
}
return(specification);
}
public void ToString_ThreeSimpleChildCriteria_ExpectedStringReturned()
{
var alertCriteria1 = new AlertCriteria {
Type = CriteriaType.Price, Operator = CriteriaOperator.GreaterThan, Level = 50.50M
};
var alertCriteria2 = new AlertCriteria {
Type = CriteriaType.Price, Operator = CriteriaOperator.LessThan, Level = 52.00M
};
var alertCriteria3 = new AlertCriteria {
Type = CriteriaType.Price, Operator = CriteriaOperator.LessThan, Level = 54.00M
};
var rootCriteria = new AlertCriteria
{
Type = CriteriaType.Composite,
Operator = CriteriaOperator.And,
ChildrenCriteria =
{
alertCriteria1,
alertCriteria2,
alertCriteria3
}
};
// Act
var description = rootCriteria.ToString();
// Assert
description.Should().Be($"{alertCriteria1} AND {alertCriteria2} AND {alertCriteria3}");
}
public CriteriaViewModel(
AlertCriteria alertCriteria,
INavigationService navigationService,
ILogger logger) : base(navigationService, logger)
{
_alertCriteria = alertCriteria ?? throw new ArgumentNullException(nameof(alertCriteria));
InitAlertCriteria();
}
public void ToString_CompositeChildCriteria_ExpectedStringReturned()
{
var alertCriteria1 = new AlertCriteria {
Type = CriteriaType.Price, Operator = CriteriaOperator.GreaterThan, Level = 50.50M
};
var alertCriteria2 = new AlertCriteria {
Type = CriteriaType.Price, Operator = CriteriaOperator.LessThan, Level = 52.00M
};
var alertCriteria3 = new AlertCriteria {
Type = CriteriaType.Price, Operator = CriteriaOperator.GreaterThan, Level = 51.50M
};
var alertCriteria4 = new AlertCriteria {
Type = CriteriaType.Price, Operator = CriteriaOperator.LessThan, Level = 53.00M
};
var andCriteria = new AlertCriteria
{
Type = CriteriaType.Composite,
Operator = CriteriaOperator.And,
ChildrenCriteria =
{
alertCriteria1,
alertCriteria2
}
};
var orCriteria = new AlertCriteria
{
Type = CriteriaType.Composite,
Operator = CriteriaOperator.Or,
ChildrenCriteria =
{
alertCriteria3,
alertCriteria4
}
};
var rootCriteria = new AlertCriteria
{
Type = CriteriaType.Composite,
Operator = CriteriaOperator.And,
ChildrenCriteria =
{
andCriteria,
orCriteria
}
};
// Act
var description = rootCriteria.ToString();
// Assert
description.Should().Be($"({andCriteria}) AND ({orCriteria})");
}
public void ToString_DailyPercentageGain_ExpectedStringReturned()
{
// Arrange
var alertCriteria = new AlertCriteria {
Type = CriteriaType.DailyPercentageGainLoss, Operator = CriteriaOperator.Equals, Level = 0.02M
};
// Act
var description = alertCriteria.ToString();
// Assert
description.Should().Be($"{CriteriaType.DailyPercentageGainLoss.ToDisplayString()} {CriteriaOperator.Equals.ToDisplayString()} {0.02M:P2}");
}
public void ToString_Price_ExpectedStringReturned()
{
// Arrange
var alertCriteria = new AlertCriteria {
Type = CriteriaType.Price, Operator = CriteriaOperator.Equals, Level = 50.50M
};
// Act
var description = alertCriteria.ToString();
// Assert
description.Should().Be($"{CriteriaType.Price.ToDisplayString()} {CriteriaOperator.Equals.ToDisplayString()} {50.50M:C}");
}
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();
}
private void AssertCriteria(AlertCriteria expected, AlertCriteria actual)
{
actual.AlertCriteriaId.Should().Be(expected.AlertCriteriaId);
actual.Type.Should().Be(expected.Type);
actual.Operator.Should().Be(expected.Operator);
actual.Level.Should().Be(expected.Level);
actual.ChildrenCriteria.Count.Should().Be(expected.ChildrenCriteria.Count);
foreach (var actualAlertCriteria in actual.ChildrenCriteria)
{
var expectedAlertCriteria =
expected.ChildrenCriteria.Single(c => c.AlertCriteriaId == actualAlertCriteria.AlertCriteriaId);
AssertCriteria(expectedAlertCriteria, actualAlertCriteria);
}
}
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();
}
public void IsSatisfiedBy_LessThanOrEqual_LastPercentGreaterThanLevel_PrevLastPercentEqualLevel_False()
{
// Arrange
var alertCriteria = new AlertCriteria {
Operator = CriteriaOperator.LessThanOrEqualTo, Level = 0.02M
};
var spec = new DailyPercentageGainLossSpecification(alertCriteria);
var message = new AlertEvaluationMessage {
OpenPrice = 1, LastPrice = 1.03M, PreviousLastPrice = 1.02M
};
// Act
var result = spec.IsSatisfiedBy(message);
// Assert
result.Should().BeFalse();
}
public void ToString_And_OneSimpleChildCriteria_ExpectedStringReturned()
{
var alertCriteria1 = new AlertCriteria {
Type = CriteriaType.Price, Operator = CriteriaOperator.Equals, Level = 50.50M
};
var rootCriteria = new AlertCriteria
{
Type = CriteriaType.Composite,
Operator = CriteriaOperator.And,
ChildrenCriteria =
{
alertCriteria1
}
};
// Act
var description = rootCriteria.ToString();
// Assert
description.Should().Be(alertCriteria1.ToString());
}
public DailyPercentageGainLossSpecification(AlertCriteria alertCriteria)
{
_alertCriteria = alertCriteria ?? throw new ArgumentNullException(nameof(alertCriteria));
}
/// <summary> /// Converts the <see cref="sourceValue" /> parameter to the <see cref="destinationType" /> parameter using <see cref="formatProvider" /// /> and <see cref="ignoreCase" /> /// </summary> /// <param name="sourceValue">the <see cref="System.Object"/> to convert from</param> /// <param name="destinationType">the <see cref="System.Type" /> to convert to</param> /// <param name="formatProvider">not used by this TypeConverter.</param> /// <param name="ignoreCase">when set to <c>true</c>, will ignore the case when converting.</param> /// <returns> /// an instance of <see cref="AlertCriteria" />, or <c>null</c> if there is no suitable conversion. /// </returns> public override object ConvertFrom(object sourceValue, global::System.Type destinationType, global::System.IFormatProvider formatProvider, bool ignoreCase) => AlertCriteria.CreateFrom(sourceValue);
private ISpecification <AlertEvaluationMessage> CreatePriceSpecification(
AlertCriteria alertCriteria) =>
new PriceSpecification(alertCriteria);
public ISpecification <AlertEvaluationMessage> CreateSpecification(AlertCriteria alertCriteria)
{
var factoryMethod = _factoryMethods[alertCriteria.Type];
return(factoryMethod.Invoke(alertCriteria));
}
private ISpecification <AlertEvaluationMessage> CreateDailyPercentageGainLossSpecification(
AlertCriteria alertCriteria) =>
new DailyPercentageGainLossSpecification(alertCriteria);
public PriceSpecification(AlertCriteria alertCriteria)
{
_alertCriteria = alertCriteria ?? throw new ArgumentNullException(nameof(alertCriteria));
}
