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));
}