public void CirclesSquareTest()
        {
            double testRadius = 4.564;

            double result = SquareСalculator.CalculateSquare(testRadius);

            Assert.AreEqual(result, Math.Pow(testRadius, 2) * Math.PI);
        }
        public void TrianglesSquareTest()
        {
            double testFirstSide       = 5;
            double testSecondSide      = 9;
            double testThirdSide       = 7;
            double testHalfOfPerimeter = 0.5 * (testFirstSide + testSecondSide + testThirdSide);

            double expectedSquare = Math.Sqrt(testHalfOfPerimeter * (testHalfOfPerimeter - testFirstSide) * (testHalfOfPerimeter - testSecondSide) * (testHalfOfPerimeter - testThirdSide));

            double result = SquareСalculator.CalculateSquare(testFirstSide, testSecondSide, testThirdSide);

            Assert.AreEqual(result, expectedSquare);
        }