public void ShouldSuccessCalculateIntegralViaRightRectMethod(double a, double b, int n, double expectedResult, double eps) { IntegrateOptions options = new IntegrateOptions() { StartX = a, EndX = b, Steps = n, Function = TestFunc }; double actualResult = Integrals.RightRect(options); Assert.IsTrue(Math.Abs(expectedResult - actualResult) <= eps); }