public void CalculateTest(double firstAgrument, double expectedResult)
        {
            var calculator   = new ArcSineGradCalculator();
            var actualResult = calculator.Calculate(firstAgrument);

            Assert.AreEqual(expectedResult, actualResult, 0.001);
        }
        public void ExceptionTest()
        {
            var calculator = new ArcSineGradCalculator();

            Assert.Throws <Exception>(() => calculator.Calculate(2));
        }