public void ConditionalLogic()
{
Order order = this.GetOrder();
Rule rule = new Rule()
{
Operator = System.Linq.Expressions.ExpressionType.AndAlso.ToString("g"),
Rules = new List<Rule>()
{
new Rule(){ MemberName = "Customer.LastName", TargetValue = "Doe", Operator = "Equal"},
new Rule(){
Operator = "Or",
Rules = new List<Rule>(){
new Rule(){ MemberName = "Customer.FirstName", TargetValue = "John", Operator = "Equal"},
new Rule(){ MemberName = "Customer.FirstName", TargetValue = "Jane", Operator = "Equal"}
}
}
}
};
MRE engine = new MRE();
var fakeName = engine.CompileRule<Order>(rule);
bool passes = fakeName(order);
Assert.IsTrue(passes);
order.Customer.FirstName = "Philip";
passes = fakeName(order);
Assert.IsFalse(passes);
}
public void BooleanMethods()
{
Order order = this.GetOrder();
Rule rule = new Rule()
{
Operator = "HasItem",//The Order Object Contains a method named 'HasItem' that returns true/false
Inputs = new List<object>{"Test"}
};
MRE engine = new MRE();
var boolMethod = engine.CompileRule<Order>(rule);
bool passes = boolMethod(order);
Assert.IsTrue(passes);
var item = order.Items.First(x => x.ItemCode == "Test");
item.ItemCode = "Changed";
passes = boolMethod(order);
Assert.IsFalse(passes);
}
public void ChildProperties()
{
Order order = this.GetOrder();
Rule rule = new Rule()
{
MemberName = "Customer.Country.CountryCode",
Operator = System.Linq.Expressions.ExpressionType.Equal.ToString("g"),
TargetValue = "AUS"
};
MRE engine = new MRE();
var compiledRule = engine.CompileRule<Order>(rule);
bool passes = compiledRule(order);
Assert.IsTrue(passes);
order.Customer.Country.CountryCode = "USA";
passes = compiledRule(order);
Assert.IsFalse(passes);
}
public void ChildPropertyBooleanMethods()
{
Order order = this.GetOrder();
Rule rule = new Rule()
{
MemberName = "Customer.FirstName",
Operator = "EndsWith",//Regular method that exists on string.. As a note expression methods are not available
Inputs = new List<object> { "ohn" }
};
MRE engine = new MRE();
var childPropCheck = engine.CompileRule<Order>(rule);
bool passes = childPropCheck(order);
Assert.IsTrue(passes);
order.Customer.FirstName = "jane";
passes = childPropCheck(order);
Assert.IsFalse(passes);
}
public void RegexIsMatch()//Had to add a Regex evaluator to make it feel 'Complete'
{
Order order = this.GetOrder();
Rule rule = new Rule()
{
MemberName = "Customer.FirstName",
Operator = "IsMatch",
TargetValue = @"^[a-zA-Z0-9]*$"
};
MRE engine = new MRE();
var regexCheck = engine.CompileRule<Order>(rule);
bool passes = regexCheck(order);
Assert.IsTrue(passes);
order.Customer.FirstName = "--NoName";
passes = regexCheck(order);
Assert.IsFalse(passes);
}