public void DecimalOperatorPowerMinus4IsCreatedAsExpected()
{
// Arrange
var engine = new DecimalEngine(DecimalOperator.TenThousandths, DecimalOperator.TenThousandths);
var p = engine.CreateRandomDecimalProblem();
// Act
// Assert
Assert.AreEqual(0.0001, p.Operator);
}
public void DecimalOperatorPower1IsCreatedAsExpected()
{
// Arrange
var engine = new DecimalEngine(DecimalOperator.Tens, DecimalOperator.Tens);
var p = engine.CreateRandomDecimalProblem();
// Act
// Assert
Assert.AreEqual(10, p.Operator);
}
public void EvaluateReturnsTrueIfAnswerCorrect()
{
// Arrange
var engine = new DecimalEngine();
var p = engine.CreateRandomDecimalProblem();
var expectedAnswer = p.ProblemOperation == Operation.Multiply ? p.Number * p.Operator : p.Number / p.Operator;
// Act
p.Answer = Math.Round(expectedAnswer, p.GetExpectedDecimalPlacesInAnswer());
// Assert
Assert.IsTrue(engine.Evaluate(p));
}
public void EvaluateReturnsFalseIfAnswerNotCorrect()
{
// Arrange
var engine = new DecimalEngine();
var p = engine.CreateRandomDecimalProblem();
var expectedAnswer = p.ProblemOperation == Operation.Multiply ? p.Number * p.Operator : p.Number / p.Operator;
// Act
p.Answer = Math.Round(expectedAnswer + 1, 5); // Just to make it incorrect
// Assert
Assert.IsFalse(engine.Evaluate(p));
}
public IDictionary <string, string> GetDecimalOperators()
{
var decimalOperators = typeof(DecimalOperator).GetEnumValues().Cast <DecimalOperator>();
var operatorDictionary = new Dictionary <string, string>();
foreach (DecimalOperator dop in decimalOperators)
{
string name = dop.ToString();
string value = DecimalEngine.GetDecimalIndexFromDecimalOperatorEnum(dop).ToString();
operatorDictionary.Add(name, value);
}
return(operatorDictionary);
}
public bool SetQuizOperators([FromBody] IEnumerable <int> operators)
{
var session = HttpContext.Current.Session;
session.Clear();
var decimalOperatorRange = new List <DecimalOperator>();
decimalOperatorRange.Add(DecimalEngine.GetDecimalOperatorEnumFromDecimalIndex(operators.Min()));
decimalOperatorRange.Add(DecimalEngine.GetDecimalOperatorEnumFromDecimalIndex(operators.Max()));
session.Add(QuizDecimalOpertorRangeSessionKey, decimalOperatorRange);
return(true);
}
private static DecimalEngine CreateEngineFromSession()
{
var decimalOperatorRange = (IEnumerable <DecimalOperator>)HttpContext.Current.Session[QuizDecimalOpertorRangeSessionKey];
int floorOp;
int ceilingOp;
int firstOp = DecimalEngine.GetDecimalIndexFromDecimalOperatorEnum(decimalOperatorRange.First());
int lastOp = DecimalEngine.GetDecimalIndexFromDecimalOperatorEnum(decimalOperatorRange.Last());
if (firstOp > lastOp)
{
floorOp = lastOp;
ceilingOp = firstOp;
}
else
{
floorOp = firstOp;
ceilingOp = lastOp;
}
return(new DecimalEngine(DecimalEngine.GetDecimalOperatorEnumFromDecimalIndex(floorOp), DecimalEngine.GetDecimalOperatorEnumFromDecimalIndex(ceilingOp)));
}
private IEnumerable <DecimalResult> EvaluateAnswers()
{
var results = new List <DecimalResult>();
// get the problems from session
var answerList = (List <DecimalProblem>)HttpContext.Current.Session[GetSessionKey()];
if (answerList != null && answerList.Count > 0)
{
// create an engine
DecimalEngine engine = CreateEngineFromSession();
foreach (var answer in answerList)
{
results.Add(new DecimalResult(answer, engine));
}
//Save to DB now
SaveResultToDb(results);
}
return(results);
}
