Assignment 2.1 Test Driven Development

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Test driven development

Test driven development is a software development technique that allows you to create software based on a pre-defined specification or set of specifications that you define in advance of writing your code. This way you constrain yourself to a set of features and behaviours that you need to implement and can continuously test your code until the expected behaviour is achieved.

Calculator

Assignment 2.1
In this assignment you have been given a specification to create a calculator program. A senior developer has provided an Interface that describes what methods the calculator is expected to have, and a suite of tests to test these methods. Your task is to implement this interface, and write a calculator class that passes the test suite.

    public interface ICalculator {
        double Add(double firstNumber, double secondNumber);
        double Subtract(double firstNumber, double secondNumber);
        double Multiply(double firstNumber, double secondNumber);
        double Divide(double firstNumber, double secondNumber);
    }

Write your code here

Write your code inside the already defined Calculator class

using System;
using System.Collections.Generic;
using System.Text;
namespace Answer
{
    public class Calculator : ICalculator
    {
        /// <summary>
        /// Adds two numbers together and returns the sum
        /// </summary>
        /// <param name="firstNumber">First Number</param>
        /// <param name="secondNumber">Second Number</param>
        /// <returns>double Sum</returns>
        public double Add(double firstNumber, double secondNumber)
        {
            throw new NotImplementedException();
        }
        /// <summary>
        /// Subtracts two numbers together and returns the result
        /// </summary>
        /// <param name="firstNumber">First Number</param>
        /// <param name="secondNumber">Second Number</param>
        /// <returns>double Result</returns>
        public double Subtract(double firstNumber, double secondNumber)
        {
            throw new NotImplementedException();
        }
        /// <summary>
        /// Multiplies two numbers together and returns the result
        /// </summary>
        /// <param name="firstNumber">First Number</param>
        /// <param name="secondNumber">Second Number</param>
        /// <returns>double Result</returns>
        public double Multiply(double firstNumber, double secondNumber)
        {
            throw new NotImplementedException();
        }
        /// <summary>
        /// Divides two numbers together and returns the result
        /// </summary>
        /// <param name="firstNumber">First Number</param>
        /// <param name="secondNumber">Second Number</param>
        /// <returns>double Result</returns>
        public double Divide(double firstNumber, double secondNumber)
        {
            throw new NotImplementedException();
        }

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