public void FailWhenGivenLessThanZero()
{
var function = new NaturalLogarithmFunction();
var inputs = function.GetInputs();
Assert.Throws <ArgumentException>(() =>
{
inputs[0].Value = -1;
});
}
public void SuccessfullySetFunctionInfo()
{
var function = new NaturalLogarithmFunction();
Assert.NotNull(function.FunctionInfo);
Assert.Equal("Natural Logarithm", function.FunctionInfo.Name);
Assert.Equal(new Version("1.0.0"), function.FunctionInfo.Version);
Assert.Equal("Find the natural logarithm of a number.", function.FunctionInfo.Description);
Assert.Collection(function.FunctionInfo.Tags,
i => Assert.Equal("algebra", i),
i => Assert.Equal("natural", i),
i => Assert.Equal("logarithm", i),
i => Assert.Equal("e", i));
}
public void SuccessfullyReturnWithDefaultValues()
{
var function = new NaturalLogarithmFunction();
var inputs = function.GetInputs();
Assert.Single(inputs);
var result = function.Calculate(inputs);
Assert.NotNull(result);
Assert.Collection(result,
i =>
{
Assert.Equal(typeof(double), i.Value.GetType());
Assert.Equal(0, TypeConverter.ToObject <int>(i.Value));
});
}
public void SuccessfullyReturnGivenPositiveValue()
{
var function = new NaturalLogarithmFunction();
var inputs = function.GetInputs();
Assert.Single(inputs);
inputs[0].Value = 27.3;
var result = function.Calculate(inputs);
Assert.NotNull(result);
Assert.Collection(result,
i =>
{
Assert.Equal(typeof(double), i.Value.GetType());
Assert.Equal(3.3068867021909143, TypeConverter.ToObject <double>(i.Value));
});
}
/// <summary>
/// Calculates the natural logarithm for all elements.
/// </summary>
/// <returns></returns>
public InstantVector NaturalLogarithm()
{
return(AddAction(NaturalLogarithmFunction.Create()));
}
