public void TestLogarithm()
{
//Arrange
VariableNode variableNode = new VariableNode();
LogarithmFunction logarithmNode = new LogarithmFunction(variableNode);
//Act
double result1 = logarithmNode.Calculate(1);
double result2 = logarithmNode.Calculate(2);
double result4 = logarithmNode.Calculate(4);
//Assert
Assert.AreEqual(0, result1);
Assert.AreEqual(0.6931, Math.Round(result2, 4));
Assert.AreEqual(1.3863, Math.Round(result4, 4));
}
public void SuccessfullyCalculateALogarithmWithOnlyLogarithmSpecified()
{
var function = new LogarithmFunction();
var inputs = function.GetInputs();
Assert.Equal(2, inputs.Length);
inputs[0].Value = 8;
var result = function.Calculate(inputs);
Assert.Collection(result,
i =>
{
Assert.Equal(typeof(double), i.Value.GetType());
Assert.Equal(Math.Log(8, 10), TypeConverter.ToObject <double>(i.Value));
});
}
