public void string2()
{
//init variables
string modelname = "1.xml";
changed = false;
RuleEngine.Evidence.Fact f = new RuleEngine.Evidence.Fact("f1", 1, "/root/person/firstname/text()", typeof(string), modelname);
f.Changed += Changed;
f.ModelLookup += ModelLookup;
f.EvidenceLookup += EvidenceLookup;
f.IsEvaluatable = true;
//init model
changed = false;
XmlDocument doc = new XmlDocument();
doc.Load(AppDomain.CurrentDomain.BaseDirectory + @"\..\..\Fact\" + modelname);
model1 = doc.DocumentElement;
f.Evaluate();
Assert.AreEqual(true, changed);
Assert.AreEqual("Joe", (string)f.Value);
//change the model, dont update this xpath expression.
changed = false;
model1["person"]["firstname"].InnerText = "bob";
f.Evaluate();
Assert.AreEqual(true, changed);
Assert.AreEqual("bob", (string)f.Value);
}
private void CreateFact1()
{
f1 = new RuleEngine.Evidence.Fact("f1", 1, 2d, typeof(double));
f1.EvidenceLookup += new EvidenceLookupHandler(EvidenceLookup);
f1.IsEvaluatable = true;
f1.Evaluate();
}
public void string6()
{
string modelname = "1.xml";
changed = false;
RuleEngine.Evidence.Fact f = new RuleEngine.Evidence.Fact("f1", 1, "/root/person/firstname/text()", typeof(string), modelname);
f.Changed += Changed;
f.ModelLookup += ModelLookup;
f.EvidenceLookup += EvidenceLookup;
f.IsEvaluatable = true;
//init model
XmlDocument doc = new XmlDocument();
doc.Load(AppDomain.CurrentDomain.BaseDirectory + @"\..\..\Fact\" + modelname);
model1 = doc.DocumentElement;
f.Evaluate();
//clone
RuleEngine.Evidence.Fact a = (RuleEngine.Evidence.Fact)f.Clone();
a.Changed += Changed;
a.ModelLookup += ModelLookup;
a.EvidenceLookup += EvidenceLookup;
a.IsEvaluatable = true;
model1["person"]["firstname"].InnerText = "Bob";
a.Evaluate();
Assert.True((string)f.Value == "Joe");
Assert.True((string)a.Value == "Bob");
Assert.True(changed == true);
}
private void CreateFact1()
{
f1 = new RuleEngine.Evidence.Fact("f1", 1,2d, typeof(double));
f1.EvidenceLookup += new EvidenceLookupHandler(EvidenceLookup);
f1.IsEvaluatable = true;
f1.Evaluate();
}
private void CreateFact2()
{
f2 = new RuleEngine.Evidence.Fact("f2", 1, 3d, typeof(double));
f2.EvidenceLookup += new EvidenceLookupHandler(EvidenceLookup);
f2.IsEvaluatable = true;
f2.Evaluate();
}
public void string1()
{
//init variables
string modelname = "1.xml";
changed = false;
RuleEngine.Evidence.Fact f = new RuleEngine.Evidence.Fact("f1", 1, "/root/person/firstname/text()", typeof(string), modelname);
f.Changed += Changed;
f.ModelLookup += ModelLookup;
f.EvidenceLookup += EvidenceLookup;
f.IsEvaluatable = true;
f.Evaluate();
//init model
changed = false;
XmlDocument doc = new XmlDocument();
doc.Load(AppDomain.CurrentDomain.BaseDirectory + @"\..\..\Fact\" + modelname);
model1 = doc.DocumentElement;
f.Evaluate();
Assert.Equal(true, changed);
Assert.Equal("Joe", (string)f.Value);
}
public void string7()
{
//init variables
string modelname = "1.xml";
changed = false;
RuleEngine.Evidence.Fact f = new RuleEngine.Evidence.Fact("f1", 1, "Joe", typeof(string));
f.Changed += Changed;
f.ModelLookup += ModelLookup;
f.EvidenceLookup += EvidenceLookup;
f.IsEvaluatable = true;
//init model
XmlDocument doc = new XmlDocument();
doc.Load(AppDomain.CurrentDomain.BaseDirectory + @"\..\..\Fact\" + modelname);
model1 = doc.DocumentElement;
f.Evaluate();
//clone
RuleEngine.Evidence.Fact a = (RuleEngine.Evidence.Fact)f.Clone();
a.Changed += Changed;
a.ModelLookup += ModelLookup;
a.EvidenceLookup += EvidenceLookup;
a.IsEvaluatable = true;
a.Value = "Bob";
a.Evaluate();
f.Evaluate();
Assert.IsTrue((string)f.Value == "Joe");
Assert.IsTrue((string)a.Value == "Bob");
Assert.IsTrue(changed == true);
}
private static void IndividualFactTest()
{
DateTime end;
DateTime start;
TimeSpan diff;
Xml x;
int total;
ROM rom = new ROM();
//set up out facts
Fact F1 = new Fact("F1", 1, new Naked("1", typeof(double)), typeof(double));
Fact F2 = new Fact("F2", 1, new Naked("1", typeof(double)), typeof(double));
Fact F3 = new Fact("F3", 1, new Naked(null, typeof(double)), typeof(double));
rom.AddEvidence(F1);
rom.AddEvidence(F2);
rom.AddEvidence(F3);
//set up our assignments
ActionExpression A1 = new ActionExpression("1", "F1", "2", 2);
ActionExpression A2 = new ActionExpression("2", "F2", "2", 2);
rom.AddEvidence(A1);
rom.AddEvidence(A2);
List<EvidenceSpecifier> list = new List<EvidenceSpecifier>();
list.Add(new EvidenceSpecifier(true, "1"));
list.Add(new EvidenceSpecifier(true, "2"));
//create a rule
Rule R1 = new Rule("R1", "1==1", list, 500, true);
rom.AddEvidence(R1);
rom.Evaluate();
Console.WriteLine("Starting Test:" + DateTime.Now);
total = 1000;
start = DateTime.Now;
for (int counter = 0; counter < total; counter++)
{
//cause rules to evaluate
rom.Evaluate();
}
end = DateTime.Now;
diff = end - start;
Console.WriteLine("Total ms: " + diff.TotalMilliseconds);
Console.WriteLine("milliseconds per rule: " + (diff.TotalMilliseconds / (total * 8d))); //eight rules per run
}
public void TestCloneFunctionality()
{
RuleEngine.ROM rom = new RuleEngine.ROM();
//facts and rules available to these text cases
RuleEngine.Evidence.Fact f1 = new RuleEngine.Evidence.Fact("f1", 1, 2d, typeof(double));
RuleEngine.Evidence.Fact f2 = new RuleEngine.Evidence.Fact("f2", 1, 4d, typeof(double));
RuleEngine.Evidence.Actions.ActionExpression a1 = new RuleEngine.Evidence.Actions.ActionExpression("a1", "f1", "3", 1);
RuleEngine.Evidence.Actions.ActionExpression a2 = new RuleEngine.Evidence.Actions.ActionExpression("a2", "f2", "3", 1);
RuleEngine.Evidence.Actions.ActionExecute a3 = new RuleEngine.Evidence.Actions.ActionExecute("a3", "R2", 1);
System.Collections.Generic.List <RuleEngine.Evidence.EvidenceSpecifier> actionList = new System.Collections.Generic.List <RuleEngine.Evidence.EvidenceSpecifier>();
actionList.Add(new RuleEngine.Evidence.EvidenceSpecifier(true, "a1"));
actionList.Add(new RuleEngine.Evidence.EvidenceSpecifier(true, "a2"));
actionList.Add(new RuleEngine.Evidence.EvidenceSpecifier(true, "a3"));
RuleEngine.Evidence.Rule r2 = new RuleEngine.Evidence.Rule("R2", "f1!=f2", actionList, 1, false);
rom.AddEvidence(f1);
rom.AddEvidence(f2);
rom.AddEvidence(a1);
rom.AddEvidence(a2);
rom.AddEvidence(a3);
rom.AddEvidence(r2);
rom.AddDependentFact("f1", "R2");
rom.AddDependentFact("f2", "R2");
f1.IsEvaluatable = true;
f2.IsEvaluatable = true;
a1.IsEvaluatable = true;
a2.IsEvaluatable = true;
a3.IsEvaluatable = true;
r2.IsEvaluatable = true;
RuleEngine.ROM rom2 = (RuleEngine.ROM)rom.Clone();
rom2.Evaluate();
Assert.AreEqual("3", rom2["f1"].Value.ToString());
Assert.AreEqual("3", rom2["f2"].Value.ToString());
Assert.AreNotEqual(rom["f1"].Value.ToString(), rom2["f1"].Value.ToString());
}
public void string4()
{
//init variables
string modelname1 = "1.xml";
string modelname2 = "2.xml";
changed = false;
RuleEngine.Evidence.Fact b = new RuleEngine.Evidence.Fact("f1", 1, "/root/address", typeof(XmlNode), modelname1);
b.Changed += Changed;
b.ModelLookup += ModelLookup;
b.EvidenceLookup += EvidenceLookup;
b.IsEvaluatable = true;
b.Evaluate();
RuleEngine.Evidence.Fact f = new RuleEngine.Evidence.Fact("f1", 1, "@pobox", typeof(bool), modelname2);
f.Changed += Changed;
f.ModelLookup += ModelLookup;
f.EvidenceLookup += EvidenceLookup;
f.IsEvaluatable = true;
f.Evaluate();
//init model
XmlDocument doc = new XmlDocument();
doc.Load(AppDomain.CurrentDomain.BaseDirectory + @"\..\..\Fact\" + modelname1);
model1 = doc.DocumentElement;
model2 = doc["root"]["person"]["address"];
f.Evaluate();
b.Evaluate();
Assert.Equal(true, changed);
Assert.True(b.Value is XmlNode);
//change the model, update this xpath expression.
changed = false;
f.Value = true;
Assert.Equal(true, changed);
Assert.True(Boolean.Parse(model2.Attributes["pobox"].Value));
Assert.True(Boolean.Parse(model1["person"]["address"].Attributes["pobox"].Value));
}
public void string1()
{
//init variables
string modelname = "1.xml";
changed = false;
RuleEngine.Evidence.Fact f = new RuleEngine.Evidence.Fact("f1", 1, "/root/person/firstname/text()", typeof(string), modelname);
f.Changed += Changed;
f.ModelLookup += ModelLookup;
f.EvidenceLookup += EvidenceLookup;
f.IsEvaluatable = true;
//init model
changed = false;
XmlDocument doc = new XmlDocument();
doc.Load(AppDomain.CurrentDomain.BaseDirectory + @"\..\..\Fact\" + modelname);
model1 = doc.DocumentElement;
f.Evaluate();
Assert.AreEqual(true, changed);
Assert.AreEqual("Joe", (string)f.Value);
}
private void CreateFact2()
{
f2 = new RuleEngine.Evidence.Fact("f2", 1, 3d, typeof(double));
f2.EvidenceLookup += new EvidenceLookupHandler(EvidenceLookup);
f2.IsEvaluatable = true;
f2.Evaluate();
}
public void double1()
{
//init variables
string modelname = "1.xml";
bool changed = false;
XmlNode model1 = null;
XmlNode model2 = null;
RuleEngine.Evidence.Fact f1 = new RuleEngine.Evidence.Fact("f1", 1, 2d, typeof(double));
RuleEngine.Evidence.Fact f2 = new RuleEngine.Evidence.Fact("f2", 1, 4d, typeof(double));
#region delegates
f1.Changed += delegate(object source, ChangedArgs args)
{
changed = true;
};
f1.ModelLookup += delegate(object source, ModelLookupArgs args)
{
if (args.Key == "1.xml")
return model1;
else if (args.Key == "2.xml")
return model2;
else
throw new Exception("Couldnt find model: " + ((ModelLookupArgs)args).Key);
};
f1.EvidenceLookup += delegate(object source, EvidenceLookupArgs args)
{
if (args.Key == "f1")
{
return f1;
}
else if (args.Key == "f2")
{
return f2;
}
else
throw new Exception("Unknown evidence");
};
#endregion
#region delegates
f2.Changed += delegate(object source, ChangedArgs args)
{
changed = true;
};
f2.ModelLookup += delegate(object source, ModelLookupArgs args)
{
if (args.Key == "1.xml")
return model1;
else if (args.Key == "2.xml")
return model2;
else
throw new Exception("Couldnt find model: " + ((ModelLookupArgs)args).Key);
};
f2.EvidenceLookup += delegate(object source, EvidenceLookupArgs args)
{
if (args.Key == "f1")
{
return f1;
}
else if (args.Key == "f2")
{
return f2;
}
else
throw new Exception("Unknown evidence");
};
#endregion
f1.IsEvaluatable = true;
f2.IsEvaluatable = true;
f1.Evaluate();
f2.Evaluate();
RuleEngine.Evidence.Actions.ActionExpression f = new RuleEngine.Evidence.Actions.ActionExpression("a1", "f1", "3", 1);
#region delegates
f.Changed += delegate(object source, ChangedArgs args)
{
changed = true;
};
f.ModelLookup += delegate(object source, ModelLookupArgs args)
{
if (args.Key == "1.xml")
return model1;
else if (args.Key == "2.xml")
return model2;
else
throw new Exception("Couldnt find model: " + ((ModelLookupArgs)args).Key);
};
f.EvidenceLookup += delegate(object source, EvidenceLookupArgs args)
{
if (args.Key == "f1")
{
return f1;
}
else if (args.Key == "f2")
{
return f2;
}
else
throw new Exception("Unknown evidence");
};
#endregion
f.IsEvaluatable = true;
//init model
changed = false;
XmlDocument doc = new XmlDocument();
doc.Load(AppDomain.CurrentDomain.BaseDirectory + @"\..\..\Fact\" + modelname);
model1 = doc.DocumentElement;
f.Evaluate();
Assert.AreEqual(true, changed);
Assert.IsTrue(f1.Value is double);
Assert.AreEqual(3, (double)f1.Value);
}
public void double3()
{
//init variables
string modelname = "1.xml";
bool changed = false;
XmlNode model1 = null;
XmlNode model2 = null;
RuleEngine.Evidence.Fact f1 = new RuleEngine.Evidence.Fact("f1", 1, 2d, typeof(double));
RuleEngine.Evidence.Fact f2 = new RuleEngine.Evidence.Fact("f2", 1, 4d, typeof(double));
#region delegates
f1.Changed += delegate(object source, ChangedArgs args)
{
changed = true;
};
f1.ModelLookup += delegate(object source, ModelLookupArgs args)
{
if (args.Key == "1.xml")
{
return(model1);
}
else if (args.Key == "2.xml")
{
return(model2);
}
else
{
throw new Exception("Couldnt find model: " + ((ModelLookupArgs)args).Key);
}
};
f1.EvidenceLookup += delegate(object source, EvidenceLookupArgs args)
{
if (args.Key == "f1")
{
return(f1);
}
else if (args.Key == "f2")
{
return(f2);
}
else
{
throw new Exception("Unknown evidence");
}
};
#endregion
#region delegates
f2.Changed += delegate(object source, ChangedArgs args)
{
changed = true;
};
f2.ModelLookup += delegate(object source, ModelLookupArgs args)
{
if (args.Key == "1.xml")
{
return(model1);
}
else if (args.Key == "2.xml")
{
return(model2);
}
else
{
throw new Exception("Couldnt find model: " + ((ModelLookupArgs)args).Key);
}
};
f2.EvidenceLookup += delegate(object source, EvidenceLookupArgs args)
{
if (args.Key == "f1")
{
return(f1);
}
else if (args.Key == "f2")
{
return(f2);
}
else
{
throw new Exception("Unknown evidence");
}
};
#endregion
f1.IsEvaluatable = true;
f2.IsEvaluatable = true;
f1.Evaluate();
f2.Evaluate();
RuleEngine.Evidence.Actions.ActionExpression f = new RuleEngine.Evidence.Actions.ActionExpression("a1", "f1", "f2+1", 1);
#region delegates
f.Changed += delegate(object source, ChangedArgs args)
{
changed = true;
};
f.ModelLookup += delegate(object source, ModelLookupArgs args)
{
if (args.Key == "1.xml")
{
return(model1);
}
else if (args.Key == "2.xml")
{
return(model2);
}
else
{
throw new Exception("Couldnt find model: " + ((ModelLookupArgs)args).Key);
}
};
f.EvidenceLookup += delegate(object source, EvidenceLookupArgs args)
{
if (args.Key == "f1")
{
return(f1);
}
else if (args.Key == "f2")
{
return(f2);
}
else
{
throw new Exception("Unknown evidence");
}
};
#endregion
f.IsEvaluatable = true;
//init model
changed = false;
XmlDocument doc = new XmlDocument();
doc.Load(AppDomain.CurrentDomain.BaseDirectory + @"\..\..\Fact\" + modelname);
model1 = doc.DocumentElement;
f.Evaluate();
Assert.Equal(true, changed);
Assert.True(f1.Value is double);
Assert.Equal(5, (double)f1.Value);
}
private static void LoadFacts(ROM rom, XmlDocument document)
{
XmlNodeList facts = document.SelectNodes("RuleEngine/Facts//Fact");
foreach (XmlNode factNode in facts)
{
string id = factNode.Attributes["id"].Value;
string type = factNode.Attributes["type"].Value;
string desc = factNode.Attributes["desc"].Value;
string modelId = factNode.Attributes["modelId"].Value;
Type valueType = null;
//ensure same rule wont be entered twice
if (rom[id]!=null)
throw new Exception("Fact has already been loaded: " + id);
//determine priority
int priority = 500;
if (factNode.Attributes["priority"]!=null)
priority = Int32.Parse(factNode.Attributes["priority"].Value);
IFact fact = null;
if (factNode["xpath"].InnerText != String.Empty)
{
//determine xpath
string xpath = factNode["xpath"].InnerText;
//determine value type
switch (type) //deterrmine the type of value returned by xpath
{
case "double":
valueType = typeof(double);
break;
case "boolean":
valueType = typeof(bool);
break;
case "string":
valueType = typeof(string);
break;
default:
throw new Exception("Invalid type: " + id + " " + type);
}
//determine value
Xml x = new Xml(xpath, valueType, modelId);
//create fact and add it to the rom
fact = new Fact(id, priority, xpath, valueType, modelId);
}
else
{
/*
//determine value type
switch (type) //deterrmine the type of value returned by xpath
{
case "double":
valueType = typeof(double);
break;
case "boolean":
valueType = typeof(bool);
break;
case "string":
valueType = typeof(string);
break;
default:
throw new Exception("Invalid type: " + id + " " + type);
}
//determine value
Naked x = new Naked(value, valueType);
//create fact and add it to the rom
fact = new Fact(id, priority, valueType,);
*/
}
rom.AddEvidence(fact);
}
}
public void TestEvaluateFunctionality()
{
//get a datareader stream from the xml file
XmlReaderSettings xrs = new XmlReaderSettings();
xrs.ConformanceLevel = ConformanceLevel.Document;
xrs.IgnoreComments = true;
xrs.IgnoreProcessingInstructions = true;
xrs.IgnoreWhitespace = true;
Stream s = new StreamReader(AppDomain.CurrentDomain.BaseDirectory + @"\..\..\Expression\ExpressionEvaluator.xml").BaseStream;
XmlReader reader = XmlReader.Create(s, xrs);
//advance the reader to the first test element
string comment = "";
string condition = "";
string result = "";
while (!reader.EOF)
{
Debug.Flush();
if (reader.IsStartElement("Tests"))
{
reader.Read();
continue;
}
if (reader.IsStartElement("Test"))
{
comment = "";
condition = "";
result = "";
reader.Read();
continue;
}
if (reader.IsStartElement())
{
switch (reader.Name)
{
case "Comment":
comment = reader.ReadElementString();
break;
case "Condition":
condition = reader.ReadElementString();
break;
case "Result":
result = reader.ReadElementString();
break;
}
continue;
}
//run the test on test end element
if (reader.Name == "Test" && !reader.IsStartElement())
{
Debug.WriteLine("");
Debug.Write("Test Case: ");
Debug.WriteLine(comment);
Debug.WriteLine(condition);
Debug.WriteLine(result);
//facts and rules available to these text cases
RuleEngine.Evidence.Fact f1 = new RuleEngine.Evidence.Fact("F1", 1, 2d, typeof(double));
RuleEngine.Evidence.Fact f2 = new RuleEngine.Evidence.Fact("F2", 1, 4d, typeof(double));
RuleEngine.Evidence.Fact s1 = new RuleEngine.Evidence.Fact("String", 1, "String", typeof(string));
RuleEngine.Evidence.Fact in1 = new RuleEngine.Evidence.Fact("In", 1, 2d, typeof(double));
RuleEngine.Evidence.Fact out1 = new RuleEngine.Evidence.Fact("Out", 1, null, typeof(double));
f1.IsEvaluatable = true;
f2.IsEvaluatable = true;
s1.IsEvaluatable = true;
RuleEngine.Evidence.ExpressionEvaluator e = new RuleEngine.Evidence.ExpressionEvaluator();
e.Parse(condition);
e.InfixToPostfix();
e.GetEvidence += delegate(object source, EvidenceLookupArgs args)
{
if (args.Key == "F1")
{
return(f1);
}
else if (args.Key == "F2")
{
return(f2);
}
else if (args.Key == "String")
{
return(s1);
}
else if (args.Key == "In")
{
return(in1);
}
else if (args.Key == "Out")
{
return(out1);
}
else
{
throw new Exception("Unknown evidence: " + args.Key);
}
};
RuleEngine.Evidence.ExpressionEvaluator.Symbol r = e.Evaluate();
//throw exception up stack if an error was present
Assert.IsFalse(r.type == RuleEngine.Evidence.ExpressionEvaluator.Type.Invalid && result != "Invalid");
Assert.AreEqual(result, r.value.Value.ToString().ToLower());
reader.Read();
continue;
}
//junk gos here
reader.Read();
}
}
/// <summary>
///
/// </summary>
/// <returns></returns>
//[System.Diagnostics.DebuggerHidden]
public override object Clone()
{
Fact f = (Fact)base.Clone();
return(f);
}
public void string7()
{
//init variables
string modelname = "1.xml";
changed = false;
RuleEngine.Evidence.Fact f = new RuleEngine.Evidence.Fact("f1", 1, "Joe", typeof(string));
f.Changed += Changed;
f.ModelLookup += ModelLookup;
f.EvidenceLookup += EvidenceLookup;
f.IsEvaluatable = true;
//init model
XmlDocument doc = new XmlDocument();
doc.Load(AppDomain.CurrentDomain.BaseDirectory + @"\..\..\Fact\" + modelname);
model1 = doc.DocumentElement;
f.Evaluate();
//clone
RuleEngine.Evidence.Fact a = (RuleEngine.Evidence.Fact)f.Clone();
a.Changed += Changed;
a.ModelLookup += ModelLookup;
a.EvidenceLookup += EvidenceLookup;
a.IsEvaluatable = true;
a.Value = "Bob";
a.Evaluate();
f.Evaluate();
Assert.IsTrue((string)f.Value == "Joe");
Assert.IsTrue((string)a.Value == "Bob");
Assert.IsTrue(changed == true);
}
public void string4()
{
//init variables
string modelname1 = "1.xml";
string modelname2 = "2.xml";
changed = false;
RuleEngine.Evidence.Fact b = new RuleEngine.Evidence.Fact("f1", 1, "/root/address", typeof(XmlNode), modelname1);
b.Changed += Changed;
b.ModelLookup += ModelLookup;
b.EvidenceLookup += EvidenceLookup;
b.IsEvaluatable = true;
b.Evaluate();
RuleEngine.Evidence.Fact f = new RuleEngine.Evidence.Fact("f1", 1, "@pobox", typeof(bool), modelname2);
f.Changed += Changed;
f.ModelLookup += ModelLookup;
f.EvidenceLookup += EvidenceLookup;
f.IsEvaluatable = true;
f.Evaluate();
//init model
XmlDocument doc = new XmlDocument();
doc.Load(AppDomain.CurrentDomain.BaseDirectory + @"\..\..\Fact\" + modelname1);
model1 = doc.DocumentElement;
model2 = doc["root"]["person"]["address"];
f.Evaluate();
b.Evaluate();
Assert.AreEqual(true, changed);
Assert.IsTrue(b.Value is XmlNode);
//change the model, update this xpath expression.
changed = false;
f.Value = true;
Assert.AreEqual(true, changed);
Assert.IsTrue(Boolean.Parse(model2.Attributes["pobox"].Value));
Assert.IsTrue(Boolean.Parse(model1["person"]["address"].Attributes["pobox"].Value));
}
public void TestEvaluateFunctionality()
{
//get a datareader stream from the xml file
XmlReaderSettings xrs = new XmlReaderSettings();
xrs.ConformanceLevel = ConformanceLevel.Document;
xrs.IgnoreComments = true;
xrs.IgnoreProcessingInstructions = true;
xrs.IgnoreWhitespace = true;
Stream s = new StreamReader(AppDomain.CurrentDomain.BaseDirectory + @"\..\..\Expression\ExpressionEvaluator.xml").BaseStream;
XmlReader reader = XmlReader.Create(s, xrs);
//advance the reader to the first test element
string comment="";
string condition="";
string result="";
while (!reader.EOF)
{
Debug.Flush();
if (reader.IsStartElement("Tests"))
{
reader.Read();
continue;
}
if (reader.IsStartElement("Test"))
{
comment = "";
condition = "";
result = "";
reader.Read();
continue;
}
if (reader.IsStartElement())
{
switch (reader.Name)
{
case "Comment":
comment = reader.ReadElementString();
break;
case "Condition":
condition = reader.ReadElementString();
break;
case "Result":
result = reader.ReadElementString();
break;
}
continue;
}
//run the test on test end element
if (reader.Name == "Test" && !reader.IsStartElement())
{
Debug.WriteLine("");
Debug.Write("Test Case: ");
Debug.WriteLine(comment);
Debug.WriteLine(condition);
Debug.WriteLine(result);
//facts and rules available to these text cases
RuleEngine.Evidence.Fact f1 = new RuleEngine.Evidence.Fact("F1", 1, 2d, typeof(double));
RuleEngine.Evidence.Fact f2 = new RuleEngine.Evidence.Fact("F2", 1, 4d, typeof(double));
RuleEngine.Evidence.Fact s1 = new RuleEngine.Evidence.Fact("String", 1, "String", typeof(string));
RuleEngine.Evidence.Fact in1 = new RuleEngine.Evidence.Fact("In", 1, 2d, typeof(double));
RuleEngine.Evidence.Fact out1 = new RuleEngine.Evidence.Fact("Out", 1, null, typeof(double));
f1.IsEvaluatable = true;
f2.IsEvaluatable = true;
s1.IsEvaluatable = true;
RuleEngine.Evidence.ExpressionEvaluator e = new RuleEngine.Evidence.ExpressionEvaluator();
e.Parse(condition);
e.InfixToPostfix();
e.GetEvidence += delegate(object source, EvidenceLookupArgs args)
{
if (args.Key == "F1")
{
return f1;
}
else if (args.Key == "F2")
{
return f2;
}
else if (args.Key == "String")
{
return s1;
}
else if (args.Key == "In")
{
return in1;
}
else if (args.Key == "Out")
{
return out1;
}
else
throw new Exception("Unknown evidence: " + args.Key);
};
RuleEngine.Evidence.ExpressionEvaluator.Symbol r = e.Evaluate();
//throw exception up stack if an error was present
Assert.IsFalse(r.type == RuleEngine.Evidence.ExpressionEvaluator.Type.Invalid && result != "Invalid");
Assert.AreEqual(result, r.value.Value.ToString().ToLower());
reader.Read();
continue;
}
//junk gos here
reader.Read();
}
}
