public RulesEngine <TContentType, TConditionType> Build()
{
IOperatorEvalStrategyFactory operatorEvalStrategyFactory = new OperatorEvalStrategyFactory();
IDeferredEval deferredEval = new DeferredEval(operatorEvalStrategyFactory, this.rulesEngineOptions);
IConditionsEvalEngine <TConditionType> conditionsEvalEngine = new ConditionsEvalEngine <TConditionType>(deferredEval);
return(new RulesEngine <TContentType, TConditionType>(conditionsEvalEngine, this.rulesDataSource, this.rulesEngineOptions));
}
public void GetDeferredEvalFor_GivenStringConditionNodeWithNoConditionSuppliedAndRulesEngineConfiguredToUseDataTypeDefaultWhenMissing_ReturnsFuncThatEvalsFalse()
{
// Arrange
StringConditionNode <ConditionType> conditionNode = new StringConditionNode <ConditionType>(ConditionType.IsoCurrency, Operators.Equal, "EUR");
Mock <IOperatorEvalStrategy> mockOperatorEvalStrategy = new Mock <IOperatorEvalStrategy>();
mockOperatorEvalStrategy.Setup(x => x.Eval(It.IsAny <string>(), It.IsAny <string>()))
.Returns(false);
Mock <IOperatorEvalStrategyFactory> mockOperatorEvalStrategyFactory = new Mock <IOperatorEvalStrategyFactory>();
mockOperatorEvalStrategyFactory.Setup(x => x.GetOperatorEvalStrategy(It.IsAny <Operators>()))
.Returns(mockOperatorEvalStrategy.Object);
IEnumerable <Condition <ConditionType> > conditions = new Condition <ConditionType>[]
{
new Condition <ConditionType>
{
Type = ConditionType.IsoCountryCode,
Value = "PT"
}
};
MatchModes matchMode = MatchModes.Exact;
RulesEngineOptions rulesEngineOptions = RulesEngineOptions.NewWithDefaults();
rulesEngineOptions.MissingConditionBehavior = MissingConditionBehaviors.UseDataTypeDefault;
DeferredEval sut = new DeferredEval(mockOperatorEvalStrategyFactory.Object, rulesEngineOptions);
// Act
Func <IEnumerable <Condition <ConditionType> >, bool> actual = sut.GetDeferredEvalFor(conditionNode, matchMode);
bool actualEvalResult = actual.Invoke(conditions);
// Assert
actualEvalResult.Should().BeFalse();
mockOperatorEvalStrategyFactory.Verify(x => x.GetOperatorEvalStrategy(It.IsAny <Operators>()), Times.Once());
mockOperatorEvalStrategy.Verify(x => x.Eval(It.IsAny <string>(), It.IsAny <string>()), Times.Once());
}
public void GetDeferredEvalFor_GivenUnknownConditionNodeType_ThrowsNotSupportedException()
{
// Arrange
Mock <IValueConditionNode <ConditionType> > mockValueConditionNode = new Mock <IValueConditionNode <ConditionType> >();
Mock <IOperatorEvalStrategyFactory> mockOperatorEvalStrategyFactory = new Mock <IOperatorEvalStrategyFactory>();
MatchModes matchMode = MatchModes.Exact;
RulesEngineOptions rulesEngineOptions = RulesEngineOptions.NewWithDefaults();
DeferredEval sut = new DeferredEval(mockOperatorEvalStrategyFactory.Object, rulesEngineOptions);
// Act
NotSupportedException notSupportedException = Assert.Throws <NotSupportedException>(() => sut.GetDeferredEvalFor(mockValueConditionNode.Object, matchMode));
// Assert
notSupportedException.Should().NotBeNull();
notSupportedException.Message.Should().Be($"Unsupported value condition node: '{mockValueConditionNode.Object.GetType().Name}'.");
}
public void GetDeferredEvalFor_GivenDecimalConditionNode_ReturnsFuncToEvalConditionsCollection()
{
// Arrange
DecimalConditionNode <ConditionType> conditionNode = new DecimalConditionNode <ConditionType>(ConditionType.PluviosityRate, Operators.GreaterThan, 50);
Mock <IOperatorEvalStrategy> mockOperatorEvalStrategy = new Mock <IOperatorEvalStrategy>();
mockOperatorEvalStrategy.Setup(x => x.Eval(It.IsAny <decimal>(), It.IsAny <decimal>()))
.Returns(true);
Mock <IOperatorEvalStrategyFactory> mockOperatorEvalStrategyFactory = new Mock <IOperatorEvalStrategyFactory>();
mockOperatorEvalStrategyFactory.Setup(x => x.GetOperatorEvalStrategy(It.IsAny <Operators>()))
.Returns(mockOperatorEvalStrategy.Object);
IEnumerable <Condition <ConditionType> > conditions = new Condition <ConditionType>[]
{
new Condition <ConditionType>
{
Type = ConditionType.PluviosityRate,
Value = 78
}
};
MatchModes matchMode = MatchModes.Exact;
RulesEngineOptions rulesEngineOptions = RulesEngineOptions.NewWithDefaults();
DeferredEval sut = new DeferredEval(mockOperatorEvalStrategyFactory.Object, rulesEngineOptions);
// Act
Func <IEnumerable <Condition <ConditionType> >, bool> actual = sut.GetDeferredEvalFor(conditionNode, matchMode);
bool actualEvalResult = actual.Invoke(conditions);
// Assert
actualEvalResult.Should().BeTrue();
mockOperatorEvalStrategyFactory.Verify(x => x.GetOperatorEvalStrategy(It.IsAny <Operators>()), Times.Once());
mockOperatorEvalStrategy.Verify(x => x.Eval(It.IsAny <decimal>(), It.IsAny <decimal>()), Times.Once());
}
