public void Complicated_ShouldCalculate(string input, double expected)
{
RegexMath.Evaluate(input).ShouldBe(expected);
}
public void Factorial_ShouldCalculate()
{
var input = "5!";
RegexMath.Evaluate(input).ShouldBe(120);
}
public void Sqrt_ShouldCalculate(string input, double expected)
{
RoughEqual(expected, out double low, out double high);
RegexMath.Evaluate(input).ShouldBeInRange(low, high);
}