Smth about Unittests

When we need to improve some path of code, I recommend to write UnitTests.

Programming includes 4 stadies:

• Math modeling future decision + flowchart


• Coding each part of decision in a some language


• Compiling all code with Visual Studio/Online


• Testing software product + UserTests

using namespace System;

using namespace System::Text;

using namespace System::Collections::Generic;

using namespace Microsoft::VisualStudio::TestTools::UnitTesting;

Each libraries provides path to success in testing and create a good environment for variables.

Namespace constitude an area, where values and functions will be viewed by user for understanding: ok tests/or not.

int power(int a, int b, int n) {// a^b mod n

            int tmp = a;

            int sum = tmp;

            for (int i = 1; i < b; i++) {

                for (int j = 1; j < a; j++) {

                    sum += tmp;

                    if (sum >= n) {

                        sum -= n;

                    }

                }

                tmp = sum;

            }

            return tmp;

        }

Using breakpoints I can watch in output-window temporary result of finishing fuction. Its help to evoide hard analytics work under final output of full programme.

void TestMethod1()

        {

            string message_in, messagge_out;

            vector<pair<int, int> > cypher;



            cout << "Enter your message: " << endl;

            getline(cin, message_in);



            int x = rand() % (593 - 2) + 1;



            crypt(593, 123, x, message_in, cypher);

            decrypt(593, x, cypher, messagge_out);



            String^ str1 = gcnew String(message_in.c_str());

            String^ str2 = gcnew String(messagge_out.c_str());

            Assert::AreEqual(str1, str2, true);

        }

Writing UnitTests makes reading code more loyal to the reviewer in company. I think, not testers, but developers need to write simple Unittests. Becouse only developers knows some special variables and values in programme.