public void Check_Array_Sum()
        {
            // arrange (setup)
            var arrayInstance  = new lab_04_array1.Array();
            var expectedOutput = 285;
            // act (run code)
            var actualOutput = arrayInstance.CreateArray(10);

            // assert (see if test pass/fail)
            Assert.AreEqual(expectedOutput, actualOutput);
        }
        public void Check_Array_Sum_Variable_Size()
        {
            // another test different parameters
            // arrange (setup)
            var arrayInstance  = new lab_04_array1.Array();
            var expectedOutput = 2470;
            // act (run code)
            var actualOutput = arrayInstance.CreateArray(20);

            // assert (see if test pass/fail)
            Assert.AreEqual(expectedOutput, actualOutput);
        }