public void GetRulesForWorlds_GivenWorlds_ExpectRuleSetfor2Worlds()
{
// Arrange...
var jsonWorlds = new List <string>();
jsonWorlds.Add("{'Name':'Bob', 'Age':'40', 'Year': '2040'}");
jsonWorlds.Add("{'Name':'Bob', 'Age':'30', 'Year': '2030'}");
var sut = new DymeInferenceEvaluator(_worldReader, _worldAnalyser);
var expected = new List <IEvaluatable>();
expected.Add(If.When(ItsAFact.That("Year").Is("2040")).Then(ItsAFact.That("Age").Is("40")));
expected.Add(If.When(ItsAFact.That("Year").Is("2030")).Then(ItsAFact.That("Age").Is("30")));
expected.Add(If.When(ItsAFact.That("Year").Is("2040")).Then(ItsAFact.That("Name").Is("Bob")));
expected.Add(If.When(ItsAFact.That("Year").Is("2030")).Then(ItsAFact.That("Name").Is("Bob")));
expected.Add(If.When(ItsAFact.That("Age").Is("40")).Then(ItsAFact.That("Name").Is("Bob")));
expected.Add(If.When(ItsAFact.That("Age").Is("30")).Then(ItsAFact.That("Name").Is("Bob")));
expected.Add(If.When(ItsAFact.That("Age").Is("40")).Then(ItsAFact.That("Year").Is("2040")));
expected.Add(If.When(ItsAFact.That("Age").Is("30")).Then(ItsAFact.That("Year").Is("2030")));
// Act...
var results = sut.GetRulesForWorlds(jsonWorlds, InferenceMethod.Optimistic);
// Assert...
CollectionAssert.AreEquivalent(expected, results);
}
public void CreateRule_GivenWorlds_ExpectSimpleImply()
{
// Arrange...
var world1 = "{'Name':'Bob', 'Age':'40'}";
var sut = new DymeInferenceEvaluator(_worldReader, _worldAnalyser);
var expected = new List <IEvaluatable>();
expected.Add(If
.When(ItsAFact.That("Name").Is("Bob"))
.Then(ItsAFact.That("Age").Is("40"))
);
expected.Add(If
.When(ItsAFact.That("Age").Is("40"))
.Then(ItsAFact.That("Name").Is("Bob"))
);
// Act...
var results = sut.GetRulesForWorlds(new List <string>()
{
world1
}, InferenceMethod.Optimistic);
// Assert...
Assert.AreEqual(expected, results);
}
public void CreateRules_GivenWorlds_ExpectConjunctions()
{
// Arrange...
var jsonWorlds = new List <string>();
jsonWorlds.Add("{'planet':'Earth', 'sky':'blue', 'ground': 'soft', 'cat': 'InCharge'}");
jsonWorlds.Add("{'planet':'Pluto', 'sky':'blue', 'ground': 'soft', 'cat': 'grumpy'}");
var input = new List <Proposition>();
input.Add(ItsAFact.That("sky").Is("blue") as Proposition);
input.Add(ItsAFact.That("ground").Is("soft") as Proposition);
input.Add(ItsAFact.That("cat").Is("InCharge") as Proposition);
var expected = new List <IEvaluatable>();
expected.Add(All.Of(ItsAFact.That("sky").Is("blue")).And(ItsAFact.That("ground").Is("soft")).IsTrue());
var sut = new DymeInferenceEvaluator(_worldReader, _worldAnalyser);
// Act...
var results = sut.AsConjunctionGetAllFactsThatRepeatWhenOtherFactsRepeat(jsonWorlds, input);
// Assert...
CollectionAssert.AreEquivalent(expected, results);
}
public void ImplicationEquals_Given2EqualImplications_ExpectEqual()
{
// Arrange...
var compareItem1 = If.When(ItsAFact.That("sky").Is("blue")).Then(ItsAFact.That("weather").Is("sunny"));
var compareItem2 = If.When(ItsAFact.That("sky").Is("blue")).Then(ItsAFact.That("weather").Is("sunny"));
// Assert...
Assert.AreEqual(compareItem1, compareItem2);
}
public void ConjunctionEquals_Given2EqualConjunctionsCreatedByDifferentMeans_ExpectEqual()
{
// Arrange...
var parser = new EasyRuleDymeRuleConverter();
var compareItem1 = parser.ConvertEasyRuleToDymeRule("(sky) IS (blue) AND (weather) IS (sunny)");
var compareItem2 = All.Of(ItsAFact.That("sky").Is("blue")).And(ItsAFact.That("weather").Is("sunny")).IsTrue();
// Assert...
Assert.AreEqual(compareItem1, compareItem2);
}
public void ImplicationEquals_Given2EqualImplicationsCreatedByDifferentMeans_ExpectEqual()
{
// Arrange...
var parser = new EasyRuleDymeRuleConverter();
var compareItem1 = parser.ConvertEasyRuleToDymeRule("IF (sky) IS (blue) THEN (weather) IS (sunny)");
var compareItem2 = If.When(ItsAFact.That("sky").Is("blue")).Then(ItsAFact.That("weather").Is("sunny"));
// Assert...
Assert.AreEqual(compareItem1, compareItem2);
}
public void EasyRuleDymeParser_GivenDymeRules_ExpectEasyRules()
{
// Arrange...
var sut = new EasyRuleDymeRuleConverter();
var expectEasyRule = "IF (Age) IS (18) THEN (Movie) IS (Visible)";
var inputDymeRule = If.When(ItsAFact.That("Age").Is("18")).Then(ItsAFact.That("Movie").Is("Visible"));
// Act...
var result = sut.ConvertDymeRuleToEasyRule(inputDymeRule);
Assert.AreEqual(expectEasyRule, result);
}
public void ImplicationEquals_GivenEqualImplicationsListDistinctified_Expect1Item()
{
// Arrange...
var parser = new EasyRuleDymeRuleConverter();
var compareItemList = new List <IEvaluatable>();
compareItemList.Add(parser.ConvertEasyRuleToDymeRule("IF (sky) IS (blue) THEN (weather) IS (sunny)"));
compareItemList.Add(If.When(ItsAFact.That("sky").Is("blue")).Then(ItsAFact.That("weather").Is("sunny")));
// Act...
compareItemList = compareItemList.Distinct().ToList();
// Assert...
Assert.AreEqual(1, compareItemList.Count());
}
public void ConvertArgumentsToJunction_Given2Arguments_ExpectJunction()
{
// Arrange...
var arguments = new List <IEvaluatable>();
arguments.Add(ItsAFact.That("sky").Is("blue"));
//var expected = new List<IEvaluatable>();
var expected = All.Of(ItsAFact.That("sky").Is("blue")).IsTrue();
// Act...
var result = ImplicationHelper.ConvertArgumentsToJunction(arguments, Junction.AND);
// Assert...
Assert.AreEqual(expected, result);
}
public void MergeImplications_GivenImplicationsWithSameAntecedent_ExpectMergedImplication2()
{
// Arrange...
var input = new List <IEvaluatable>();
input.Add(If.When(ItsAFact.That("sky").Is("blue")).Then(ItsAFact.That("ground").Is("soft")));
input.Add(If.When(ItsAFact.That("sky").Is("blue")).Then(ItsAFact.That("ground").Is("hard")));
var expected = new List <IEvaluatable>();
expected.Add(If.When(ItsAFact.That("sky").Is("blue")).Then(Any.Of(ItsAFact.That("ground").Is("soft")).Or(ItsAFact.That("ground").Is("hard")).IsTrue()));
// Act...
var results = ImplicationHelper.MergeImplications(input);
// Assert...
CollectionAssert.AreEquivalent(expected, results);
}
public void ConjunctionEquals_Given2EqualConjunctionsWith3ArgumentsCreatedByDifferentMeans_ExpectSimilarHashes()
{
// Arrange...
var parser = new EasyRuleDymeRuleConverter();
var compareItem1 = parser.ConvertEasyRuleToDymeRule("(sky) IS (blue) AND (weather) IS (sunny) AND (water) IS (warm)");
var compareItem2 = All.Of(
ItsAFact.That("sky").Is("blue"))
.And(ItsAFact.That("weather").Is("sunny"))
.And(ItsAFact.That("water").Is("warm"))
.IsTrue();
// Act...
var result1 = compareItem1.GetHashCode();
var result2 = compareItem2.GetHashCode();
// Assert...
Assert.AreEqual(result1, result2);
}
public void EasyRuleDymeParser_GivenBothJunctiveDymeRules_ExpectEasyRules()
{
// Arrange...
var sut = new EasyRuleDymeRuleConverter();
var expectEasyRule = "IF (age) IS (10) OR (genre) IS (cartoon) THEN (movie) IS (visible) AND (there) NOT (violence)";
var inputDymeRule =
If.When(Any.Of
(ItsAFact.That("age").Is("10"))
.Or
(ItsAFact.That("genre").Is("cartoon"))
.IsTrue())
.Then(All.Of
(ItsAFact.That("movie").Is("visible"))
.And
(ItsAFact.That("there").IsNot("violence"))
.IsTrue());
// Act...
var result = sut.ConvertDymeRuleToEasyRule(inputDymeRule);
Assert.AreEqual(expectEasyRule, result);
}
public void PessimisticWorld_GivenWorlds2_ExpectRuleSet()
{
// Arrange...
var jsonWorlds = new List <string>();
jsonWorlds.Add("{'planet':'Earth', 'sky':'blue', 'ground': 'soft', 'cat': 'InCharge'}");
jsonWorlds.Add("{'planet':'Venus', 'sky':'yellow', 'ground': 'hard', 'cat': 'InCharge'}");
jsonWorlds.Add("{'planet':'Mars', 'sky':'red', 'ground': 'soft', 'cat': 'InCharge'}");
jsonWorlds.Add("{'planet':'Pluto', 'sky':'blue', 'ground': 'soft', 'cat': 'InCharge'}");
var sut = new DymeInferenceEvaluator(_worldReader, _worldAnalyser);
var expected = new List <IEvaluatable>();
expected.Add(If.When(ItsAFact.That("sky").Is("blue")).Then(ItsAFact.That("ground").Is("soft")));
// Act...
var results = sut.GetRulesForWorlds(jsonWorlds, InferenceMethod.Pessimistic);
// Assert...
CollectionAssert.AreEquivalent(expected, results);
}
private IEnumerable <IEvaluatable> GetCartesianImplicationsFromWorld <WorldType>(WorldType world)
{
var allFactsFromWorld = _worldAnalyser.GetAttributesAndValues(world).Select(attVal => ItsAFact.That(attVal.Key).Is(attVal.Value));
var factPairs = CreateCartesianPairs(allFactsFromWorld);
var implications = factPairs.Select(factPair => If.When(factPair.Item1).Then(factPair.Item2));
return(implications);
}