public void CalculateTest()
{
IOneArgumentCalculator calculator = new Cotangent();
double result = calculator.Calculate(1);
Assert.AreEqual(0.64, result, 0.01);
}
public void CalculateTest(double firstValue, double expected)
{
var calculator = new Cotangent();
var actualResult = calculator.Calculate(firstValue);
Assert.AreEqual(expected, actualResult, 0.0001);
}