public void RespondentSatisfiesTwoTerm()
{
List <FilterInstruction> fl = new List <FilterInstruction>();
FilterInstruction fi = new FilterInstruction()
{
VarName = "AA001",
Oper = Operation.Equals
};
fi.ValuesStr.Add("1");
FilterInstruction fi2 = new FilterInstruction()
{
VarName = "AA002",
Oper = Operation.Equals
};
fi2.ValuesStr.Add("1");
fl.Add(fi);
fl.Add(fi2);
Respondent r = new Respondent();
r.AddResponse("AA001", "1");
r.AddResponse("AA002", "1");
Assert.IsTrue(r.RespondentSatisfiesFilter(fl));
}
public void RespondentFailsNoAnswer()
{
LinkedQuestion q = new LinkedQuestion();
q.PreP = "Ask if AA001=1 and AA002=1.";
List <FilterInstruction> fl = new List <FilterInstruction>();
FilterInstruction fi = new FilterInstruction()
{
VarName = "AA001",
Oper = Operation.Equals
};
fi.ValuesStr.Add("1");
FilterInstruction fi2 = new FilterInstruction()
{
VarName = "AA002",
Oper = Operation.Equals
};
fi.ValuesStr.Add("1");
fl.Add(fi);
fl.Add(fi2);
q.FilterList.Add(fl);
Respondent r = new Respondent();
r.AddResponse("AA001", "1");
Assert.IsFalse(r.RespondentSatisfiesFilter(fl));
}
/// <summary>
/// Returns true if the provided user should be asked the specified question. The user gets the question if their answers satisfy at least one of the question's
/// filter scenarios, or if there are no filter scenarios (an Ask all).
/// </summary>
/// <param name="r"></param>
/// <param name="lq"></param>
/// <returns></returns>
public bool UserGetsQuestion(Respondent r, LinkedQuestion lq)
{
// if there are no filter conditions, it is ask all, so any user gets this question
if (lq.FilterList.Count == 0)
{
return(true);
}
if (lq.FilteredOnRtypeOnly())
{
return(true);
}
// if the VarName was skipped, the user does not get this question
if (r.Responses.Any(x => x.VarName.Equals(lq.VarName.RefVarName) && x.Skipped))
{
return(false);
}
// if the respondent has an answer for this question, include it
if (r.Responses.Any(x => x.VarName.Equals(lq.VarName.RefVarName) && !x.Skipped))
{
return(true);
}
// for each scenario, if it contains any of the respondent's answers, check them and if they are satisfactory, add to set
// if there are none that match, add to set
// if every scenario is not satisfied, skip the question
int failed = 0;
foreach (List <FilterInstruction> list in lq.FilterList)
{
List <FilterInstruction> f = new List <FilterInstruction>();
foreach (Answer a in r.Responses)
{
f.AddRange(list.Where(x => x.VarName.Equals(a.VarName)).ToList());
}
if (f.Count() == 0)
{
failed++;
}
else if (r.RespondentSatisfiesFilter(f))
{
return(true);
}
else
{
failed++;
}
}
// if all filter scenarios failed, user does not get the question, return false
if (failed == lq.FilterList.Count())
{
return(false);
}
else
{
return(true);
}
}