public void CalculateTest(double firstArgument, double expectedResult)
{
var calculator = new ArcCosineCalculator();
var actualResult = calculator.Calculate(firstArgument);
Assert.AreEqual(expectedResult, actualResult, 0.001);
}
public void ExceptionTest()
{
var calculator = new ArcCosineCalculator();
Assert.Throws <Exception>(() => calculator.Calculate(2));
}