CE103 Algorithms and Programming I¶

Week-4¶

Introduction to Code Reusability and Automated Testing¶

Download DOC, SLIDE, PPTX

Outline¶

Introduction to Code Reusability and Automated Testing
Shared Library Development
- C
- C++
- C#
- Java
Unit Testing
- C
- C++
- C#
- Java
Continues Integration Platforms

Introduction to Code Reusability and Automated Testing¶

During this course, we will use entry-level shared library development and their tests and test automation. Also, we will see TDD(Test Driven Development) approach.

Selected Development Environment¶

During this course, we will use Windows OS, Eclipse and Visual Studio Community Edition environments for examples.

Example Content¶

Each example will include two function
"Hello <name>" printing function with name sayHelloTo(name) and sum of two variable function for basic, sum = sum(a,b). This sum function will add a to b and return the result to the sum variable.
We will locate them in the library and use them from a console application, also we will create unit tests for testing their functionalities and return variables

Shared Library Development¶

C Programming (Static Library)¶

Visual Studio Community Edition¶

Shared Library Development - (VS C Static Library)-1¶

In this sample, we will create a c-lib-sample project that contains a library, executable, unit tests and unit test runners.
First of all, you install Visual Studio Community Edition from the website
- Visual Studio 2019 Community Edition - Son Ücretsiz Sürümü İndir

Shared Library Development - (VS C Static Library)-2¶

Open visual studio community edition and select create a new project

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Shared Library Development - (VS C Static Library)-3¶

Select create a new project

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Shared Library Development - (VS C Static Library)-4¶

Select C++ static library from the project list

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Shared Library Development - (VS C Static Library)-5¶

Give static library project name

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Shared Library Development - (VS C Static Library)-6¶

Default configuration come with C++ project types and setting

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Shared Library Development - (VS C Static Library)-7¶

In the c-sample-lib.cpp you will sample function

void fncsamplelib(){

}

Shared Library Development - (VS C Static Library)-8¶

Delete pch.h and pch.c files. Also disable use precompiled header settings from configurations and change to "Not Using Precomplied Headers", also you can delete precomplied Header File.

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Shared Library Development - (VS C Static Library)-9¶

Customize library header name and update framework.h to samplelib.h
Insert your functions inside the c-sample-lib.c and update header files also.

// c-sample-lib.cpp : Defines the functions for the static library.
//

#include "samplelib.h"
#include "stdio.h"

/// <summary>
///
/// </summary>
/// <param name="name"></param>
void sayHelloTo(char* name){

    if (name != NULL){
        printf("Hello %s \n",name);
    }
    else {
        printf("Hello There\n");
    }
}

/// <summary>
///
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <returns></returns>
int sum(int a, int b){

    int c = 0;
    c = a + b;
    return c;
}

Shared Library Development - (VS C Static Library)-10¶

Also, update samplelib.h as follows.

#pragma once

#define WIN32_LEAN_AND_MEAN             // Exclude rarely-used stuff from Windows headers

void sayHelloTo(char* name);
int sum(int a, int b);

Shared Library Development - (VS C Static Library)-11¶

If you check the configuration you will see that for C compiler we are using Microsoft Environment and Toolkits

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Shared Library Development - (VS C Static Library)-12¶

Now we can compile our library

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Shared Library Development - (VS C Static Library)-13¶

You can follow operation from the output window

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Shared Library Development - (VS C Static Library)-14¶

In the debug folder, we will see our output

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Shared Library Development - (VS C Static Library)-15¶

Now we will add a console application c-sample-app and use our library

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Shared Library Development - (VS C Static Library)-16¶

select C++ Windows Console Application from list

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Shared Library Development - (VS C Static Library)-17¶

C++ Console Application Selection will generate a C++ console project we can change extension to C to compile our application as C application.

we will convert c-sample-app.c to following code

#include <stdio.h>

/// <summary>
///
/// </summary>
/// <returns></returns>
int main()
{
    printf("Hello World!\n");
}

Shared Library Development - (VS C Static Library)-18¶

after conversion set c-sample-app as startup project and build it

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this will create c-sample-app.exe in the same folder with c-sample-lib.lib library

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if we run the application we will see only "Hello World"

Shared Library Development - (VS C Static Library)-19¶

now we will see two options to add a library as references in our application and use its functions.

Shared Library Development - (VS C Static Library)-20¶

First option

right click references for c-sample-app and add current library as reference

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Shared Library Development - (VS C Static Library)-21¶

Select Add Reference

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Shared Library Development - (VS C Static Library)-22¶

Browse for solution and select c-sample-lib

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Shared Library Development - (VS C Static Library)-23¶

You can check added reference from references section

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Shared Library Development - (VS C Static Library)-24¶

Now we can include required headers from c-sample-lib folder and use it.
We can include required header with relative path as follow or with configuration

#include <stdio.h>
#include "..\c-sample-lib\samplelib.h"
/// <summary>
///
/// </summary>
/// <returns></returns>
int main()
{
    printf("Hello World!\n");
}

Shared Library Development - (VS C Static Library)-25¶

we can build our c-sample-app

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Shared Library Development - (VS C Static Library)-26¶

Also we can only write header name

#include <samplelib.h>

Shared Library Development - (VS C Static Library)-27¶

For this option, we need to configure include directories

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Shared Library Development - (VS C Static Library)-28¶

select c-sample-lib header file location

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browse for folder

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Shared Library Development - (VS C Static Library)-29¶

your full path will be added to your configuration

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Shared Library Development - (VS C Static Library)-30¶

if you add header file paths to your configuration you can use header files by name in your source code

#include <stdio.h>
#include <samplelib.h>
/// <summary>
///
/// </summary>
/// <returns></returns>
int main()
{
    printf("Hello World!\n");
}

Shared Library Development - (VS C Static Library)-31¶

we can compile the following we don't have problems but here we need to configure relative paths for configuration open include library settings and update with relative path

..\c-sample-lib

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Shared Library Development - (VS C Static Library)-32¶

now we have portable source code configuration. we can call our functions and then we can update header and library folder configurations.

#include <stdio.h>
#include <samplelib.h>
/// <summary>
///
/// </summary>
/// <returns></returns>
int main()
{
    int result = 0;
    //printf("Hello World!\n");
    result = sum(5, 4);
    sayHelloTo("Computer");
    printf("Result is %d \n",result);
    printf("Press any key to continue...\n");
    getchar();
    return 0;
}

Shared Library Development - (VS C Static Library)-33¶

when you run you will see the following outputs, which mean we called library functions.

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Shared Library Development - (VS C Static Library)-34¶

A static library is a code-sharing approach if you want to share your source code with your customers then you can share static libraries and header files. In another case you can use a precompiled static library with you or this library can be part of any installation then if there is an installed app and static libraries are placed on the system folder or any different location then you can use configuration files to set library path and included header paths

Shared Library Development - (VS C Static Library)-35¶

Now we can remove the project from c-sample-app references but we will set library file in configuration

Before this copy static library and header files to a folder like that

DebugStaticLibDeployment

Set C/C++ -> General -> Additional Include Directories

There is a bug in configurations and relative path not finding headers so for this reason we will set full path but this is not a good practice for team working

Shared Library Development - (VS C Static Library)-36¶

Not Working Solution

..\c-sample-lib\DebugStaticLibDeployment

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Shared Library Development - (VS C Static Library)-37¶

Working Solution

E:\...\c-lib-sample\c-sample-lib\DebugStaticLibDeployment

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Shared Library Development - (VS C Static Library)-38¶

Now we will set library folder that our static library placed

we will set VC++ Directories -> Library Directories

Here is the same issue if we use relative path it doesn't work we need to set full path for library folder

Shared Library Development - (VS C Static Library)-39¶

Working Solution

E:\...\c-lib-sample\c-sample-lib\DebugStaticLibDeployment

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Shared Library Development - (VS C Static Library)-40¶

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Shared Library Development - (VS C Static Library)-41¶

Not Working

..\c-sample-lib\DebugStaticLibDeployment

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Shared Library Development - (VS C Static Library)-42¶

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Shared Library Development - (VS C Static Library)-43¶

If we set full path for both libraries and headers then we need to set library name for project

Linker->Input->Additional Dependencies

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In this case we will compile c-sample-app and we do not need to compile c-sample-lib because we copied output files to a different location and they are ready to use.

Shared Library Development - (VS C Static Library)-44¶

current source code will be like that nothing changed

#include <stdio.h>
#include <samplelib.h>

/// <summary>
///
/// </summary>
/// <returns></returns>
int main()
{
    int result = 0;
    //printf("Hello World!\n");
    result = sum(5, 4);
    sayHelloTo("Computer");
    printf("Result is %d \n",result);
    printf("Press any key to continue...\n");
    getchar();
    return 0;
}

Shared Library Development - (VS C Static Library)-45¶

and output will be as follow

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Shared Library Development - (VS C Static Library)-46¶

There is a option about portability that we can set for team works

We will remove all library related settings from configurations and we will write them in source code

Clear linker->general->additional library directories

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Shared Library Development - (VS C Static Library)-47¶

Clear C/C++ -> General -> Additional Include Directories

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Shared Library Development - (VS C Static Library)-48¶

Clear Linker->Input->Additional Dependencies

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Shared Library Development - (VS C Static Library)-49¶

Now we can set this configurations in source code as follow

#pragma comment(lib, "..\\DebugStaticLibDeployment\\c-sample-lib.lib")
#include "..\DebugStaticLibDeployment\samplelib.h"

#include <stdio.h>

/// <summary>
///
/// </summary>
/// <returns></returns>
int main()
{
    int result = 0;
    //printf("Hello World!\n");
    result = sum(5, 4);
    sayHelloTo("Computer");
    printf("Result is %d \n",result);
    printf("Press any key to continue...\n");
    getchar();
    return 0;
}

with this configuration if your friends download this code then they can run them with their environment without setting a path.

Shared Library Development¶

C++ Programming (Static Library)¶

Visual Studio Community Edition¶

Shared Library Development - (VS Cpp Static Library)-1¶

All steps are similar with C programming above, but you do not need to delete pch.h
You should take care about compiled source codes
for example if your code is compiled for x86 then your application also should use the x86 configuration else x64 then library should be x64 complied version.

Shared Library Development - (VS Cpp Static Library)-2¶

Source will look like the following

// cpp-sample-app.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#pragma comment(lib, "..\\DebugStaticLibDeployment\\cpp-sample-lib.lib")

#include "..\DebugStaticLibDeployment\samplelib.h"

#include <iostream>

int main()
{
    std::cout << "Hello World!\n";

    int result = 0;
    //printf("Hello World!\n");
    result = sum(5, 4);
    sayHelloTo("Computer");
    printf("Result is %d \n", result);
    printf("Press any key to continue...\n");
    getchar();
    return 0;

}

Shared Library Development¶

C++ Programming (Static Library)¶

Visual Studio Community Edition WSL Option¶

Shared Library Development - (VS Cpp WSL Static Library)-1¶

Install WSL2
- GitHub - ucoruh/ns3-wsl-win10-setup: ns3 windows 10 WSL2 setup and usage
Create a Linux project

Shared Library Development - (VS Cpp WSL Static Library)-2¶

Configure Platform Toolset to WSL

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Shared Library Development - (VS Cpp WSL Static Library)-3¶

Select GCC for Windows Subsystem for Linux

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Shared Library Development - (VS Cpp WSL Static Library)-4¶

Put a breakpoint and run debugger

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Shared Library Development - (VS Cpp WSL Static Library)-5¶

In the debugger for WSL you can use local WSL installation but if you want to run it on Release setting it require a SSH connection.

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Shared Library Development - (VS Cpp WSL Static Library)-6¶

Configure SSH parameters

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Shared Library Development - (VS Cpp WSL Static Library)-7¶

so you have to complete the following steps.
C/C++ Remote Linux Option over SSH
- Enable SSH
  - SSH on Windows Subsystem for Linux (WSL) | Illuminia Studios
- Connect to Remote WSL Environment
  - Bağlan hedef Linux sisteminize Visual Studio | Microsoft Docs

Shared Library Development¶

C# Programming (Dinamik Library)¶

Visual Studio Community Edition¶

Shared Library Development - (VS Csharp Dynamic Library)-1¶

In C# project we will create class library we have several options
for this sample we will select .NET core that we can build cross platform library

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Shared Library Development - (VS Csharp Dynamic Library)-2¶

There is no static library option

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Shared Library Development - (VS Csharp Dynamic Library)-3¶

We will select .Net Core 3.1

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Shared Library Development - (VS Csharp Dynamic Library)-4¶

You will have default empty class library file

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Shared Library Development - (VS Csharp Dynamic Library)-5¶

In the project you can see .NETcore reference

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Shared Library Development - (VS Csharp Dynamic Library)-6¶

We can build empty class library that generate dll for our application

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Shared Library Development - (VS Csharp Dynamic Library)-7¶

Now we will add Console Application but this will also use .NETCore

Shared Library Development - (VS Csharp Dynamic Library)-8¶

Select New Project

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Shared Library Development - (VS Csharp Dynamic Library)-9¶

Set project name

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Shared Library Development - (VS Csharp Dynamic Library)-10¶

Select .NETCore framework

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Shared Library Development - (VS Csharp Dynamic Library)-11¶

You will have the following sample main.cs file

using System;

namespace csharp_sample_app
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
        }
    }
}

Shared Library Development - (VS Csharp Dynamic Library)-12¶

Now we can link projects with adding references open reference section

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Shared Library Development - (VS Csharp Dynamic Library)-13¶

browse for class library project output folder and select output dll file for console application

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Shared Library Development - (VS Csharp Dynamic Library)-14¶

now we can update our library code and use it in console application
copy following sample to sampleLibClass file in the library

Shared Library Development - (VS Csharp Dynamic Library)-15¶

using System;

namespace csharp_sample_lib
{
    public class sampleLibClass
    {
        public static void sayHelloTo(string name)
        {
            if (!String.IsNullOrEmpty(name))
            {
                Console.WriteLine("Hello " + name);
            }
            else
            {
                Console.WriteLine("Hello There");
            }

        }

        public static int sum(int a, int b)
        {
            int c = 0;
            c = a + b;
            return c;
        }
    }
}

Shared Library Development - (VS Csharp Dynamic Library)-16¶

After this operation copy following sample to console application and build app then you can run

using csharp_sample_lib;
using System;

namespace csharp_sample_app
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");

            sampleLibClass.sayHelloTo("Computer");
            int result = sampleLibClass.sum(5, 4);
            Console.WriteLine("Results is" + result);
            Console.WriteLine("Results is {0}", result);
            Console.Read();
        }
    }
}

Shared Library Development - (VS Csharp Dynamic Library)-17¶

You will see following output that mean we called DLL functions

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Shared Library Development - (VS Csharp Dynamic Library)-18¶

Also we can publish this console application with dll for linux environment or others
for linux environment we should install .NETCore

Shared Library Development - (VS Csharp Dynamic Library)-19¶

follow the link below or commands that I shared with you as below for deployment
How to Install Dotnet Core on Ubuntu 20.04 – TecAdmin

Step 1 – Enable Microsoft PPA

 wget https://packages.microsoft.com/config/ubuntu/20.04/packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb

Shared Library Development - (VS Csharp Dynamic Library)-20¶

Step 2 – Installing Dotnet Core SDK

sudo apt update
sudo apt install apt-transport-https
sudo apt install dotnet-sdk-3.1

Shared Library Development - (VS Csharp Dynamic Library)-21¶

Step 3 – Install Dotnet Core Runtime Only

To install .NET Core Runtime on Ubuntu 20.04 LTS system, execute the commands:

sudo apt update

Shared Library Development - (VS Csharp Dynamic Library)-22¶

To install the previous version of .Net core runtime 2.1, type:

sudo apt install dotnet-runtime-2.1

Press “y” for any input prompted by the installer.

Shared Library Development - (VS Csharp Dynamic Library)-23¶

Step 4 – (Optional) Check .NET Core Version

You can use dotnet command line utility to check installed version of .NET Core on your system. To check dotnet version, type:

dotnet --version

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Shared Library Development - (VS Csharp Dynamic Library)-24¶

Now we will publish our application as single executable
Open publish menu

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Shared Library Development - (VS Csharp Dynamic Library)-25¶

Select netcoreapp3.1 and Release for linux-x64

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Shared Library Development - (VS Csharp Dynamic Library)-26¶

Select produce single file

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Shared Library Development - (VS Csharp Dynamic Library)-27¶

After succesfull publish you will have linux binary that you can run with WSL

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Shared Library Development - (VS Csharp Dynamic Library)-28¶

Open WSL and enter the path where this folder located
And run application as follow

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Shared Library Development - (VS Csharp Dynamic Library)-29¶

check dotnet --version and then run application

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you will see similar output

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Shared Library Development - (VS Csharp Dynamic Library)-30¶

In this sample we created single application from settings lets try with shared library located option uncheck the "produce single file" option and publish again.

Then you will have the following outputs

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Shared Library Development - (VS Csharp Dynamic Library)-31¶

If you run csharp-sample-app
you will have the same output

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Shared Library Development¶

Java Programming¶

Eclipse IDE¶

Shared Library Development - (Eclipse Java Jar Library)-1¶

You should download and install eclipse installer and then you should select Eclipse IDE for Java Developers
- Eclipse Installer 2021-09 R | Eclipse Packages

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Shared Library Development - (Eclipse Java Jar Library)-2¶

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Shared Library Development - (Eclipse Java Jar Library)-3¶

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Shared Library Development - (Eclipse Java Jar Library)-4¶

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Shared Library Development - (Eclipse Java Jar Library)-5¶

select create a project

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Shared Library Development - (Eclipse Java Jar Library)-6¶

select java project

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Shared Library Development - (Eclipse Java Jar Library)-7¶

give project name

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Shared Library Development - (Eclipse Java Jar Library)-8¶

select finish

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Shared Library Development - (Eclipse Java Jar Library)-9¶

first we need to add a default package to keep everything organized

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Shared Library Development - (Eclipse Java Jar Library)-10¶

then we can create our class that includes our functions

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Shared Library Development - (Eclipse Java Jar Library)-11¶

give class a name

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Shared Library Development - (Eclipse Java Jar Library)-12¶

you will have following class with main

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Shared Library Development - (Eclipse Java Jar Library)-13¶

We will create sample java library with static functions as below.

package ce103;

import java.io.IOException;

public class JavaSampleLib {

    public static void sayHelloTo(String name) {
        if(name.isBlank() || name.isEmpty())
        {
            System.out.println("Hello "+name);
        }else {
            System.out.println("Hello There");
        }
    }

    public static int sum(int a,int b)
    {
        int c = 0;
        c = a+b;
        return c;
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("Hello World!");

        JavaSampleLib.sayHelloTo("Computer");
        int result = JavaSampleLib.sum(5, 4);
        System.out.println("Results is" + result);
        System.out.printf("Results is %d \n", result);


        try {
            System.in.read();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}

Shared Library Development - (Eclipse Java Jar Library)-14¶

also we can add main method to run our library functions. If we run this file its process main function

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Shared Library Development - (Eclipse Java Jar Library)-15¶

we can see output from console as below

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Shared Library Development - (Eclipse Java Jar Library)-16¶

There is no exe files java runtime environment run class files but we can export this as an executable.

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Shared Library Development - (Eclipse Java Jar Library)-17¶

Select Java->Runnable JAR File

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Shared Library Development - (Eclipse Java Jar Library)-18¶

click next and set output path for jar file

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Shared Library Development - (Eclipse Java Jar Library)-19¶

If our project has several external dependecy then we can extract this required files (jar, so, dll) in seperated folder or we can combine them and generate a single executable jar
Lets pack everthing together, Select launch configuration that has main function

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Shared Library Development - (Eclipse Java Jar Library)-20¶

end of this operation we will have the following jar that we can by click

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Shared Library Development - (Eclipse Java Jar Library)-21¶

When you click application if cannot run then try command line to see problem
enter jar folder and run the following command

java -jar JavaSampleLibExecutable.jar

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In my case eclipse build JDK is newer than that I installed and set for my OS

If we check version we can see problem Java version 1.8.0_231

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Shared Library Development - (Eclipse Java Jar Library)-22¶

We can found installed and builded JDK for our application from Eclipse setting

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Shared Library Development - (Eclipse Java Jar Library)-23¶

select environments

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Shared Library Development - (Eclipse Java Jar Library)-24¶

select installed JRE or JDK

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Shared Library Development - (Eclipse Java Jar Library)-25¶

you can see installed JRE or JDK home

C:\Program Files\Java\jdk-16.0.1

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Shared Library Development - (Eclipse Java Jar Library)-26¶

Open system environment to fix this problem

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Shared Library Development - (Eclipse Java Jar Library)-27¶

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Shared Library Development - (Eclipse Java Jar Library)-28¶

Check user settings first

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Shared Library Development - (Eclipse Java Jar Library)-29¶

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Shared Library Development - (Eclipse Java Jar Library)-30¶

Check system settings

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Shared Library Development - (Eclipse Java Jar Library)-31¶

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Shared Library Development - (Eclipse Java Jar Library)-32¶

we will move up the JDK 16 configuration then command line will run first java

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Shared Library Development - (Eclipse Java Jar Library)-33¶

Also in system setting check JAVA_HOME

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Shared Library Development - (Eclipse Java Jar Library)-34¶

After this settings close current command line and open new one
Write

java --version

if you see java version updated and 16.0.1 then settings are correct

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Shared Library Development - (Eclipse Java Jar Library)-35¶

and now if we enter and run application as follow we will see output

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Shared Library Development - (Eclipse Java Jar Library)-36¶

But when you click this jar its not running as you see so we have options to provide a clickable application there
Launch4j is an option here
- Launch4j - Cross-platform Java executable wrapper

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Shared Library Development - (Eclipse Java Jar Library)-37¶

you can watch this tutorial also
- How to convert jar to exe using Launch4J Full explanation - YouTube

Shared Library Development - (Eclipse Java Jar Library)-38¶

Download and install launch4j and open application

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Shared Library Development - (Eclipse Java Jar Library)-39¶

Configure your application settings similar to below select jar file and exe output path

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Shared Library Development - (Eclipse Java Jar Library)-40¶

We can customize main class if have multiple main class

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Shared Library Development - (Eclipse Java Jar Library)-41¶

select console from setting for this application

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Shared Library Development - (Eclipse Java Jar Library)-42¶

we can provide a single running application, this setting avoid to run multiple instances

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Shared Library Development - (Eclipse Java Jar Library)-43¶

we need to set runtime environment versions

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Shared Library Development - (Eclipse Java Jar Library)-44¶

you can set system parameters before running application

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Shared Library Development - (Eclipse Java Jar Library)-45¶

with splash screen you can show a splash screen image for your application

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Shared Library Development - (Eclipse Java Jar Library)-46¶

File attributes such as version product information is configured from version info tab

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Shared Library Development - (Eclipse Java Jar Library)-47¶

if your application runtime condition has an error then you can show this customized messages also

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Shared Library Development - (Eclipse Java Jar Library)-48¶

with this options save configuration file xml

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Shared Library Development - (Eclipse Java Jar Library)-49¶

and compile settings

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Shared Library Development - (Eclipse Java Jar Library)-50¶

You will see generated output file in log screen

Compiling resources
Linking
Wrapping
WARNING: Sign the executable to minimize antivirus false positives or use launching instead of wrapping.
Successfully created C:\Users\ugur.coruh\Desktop\java-export-sample\JavaSampleLibExecutable.exe

Shared Library Development - (Eclipse Java Jar Library)-51¶

now we can run exe by click

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Shared Library Development - (Eclipse Java Jar Library)-52¶

another option here adding a bat file to run current jar file

Shared Library Development - (Eclipse Java Jar Library)-53¶

JavaSampleLibExecutable.bat

java -jar JavaSampleLibExecutable.jar

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if we click bat file then we will automate command line task for current jar file

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Shared Library Development - (Eclipse Java Jar Library)-54¶

Now return back to our java library and create another console application that use library functions

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Shared Library Development - (Eclipse Java Jar Library)-55¶

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Shared Library Development - (Eclipse Java Jar Library)-56¶

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Shared Library Development - (Eclipse Java Jar Library)-57¶

You can set libraries in this step from but our library should exported for our solution

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Shared Library Development - (Eclipse Java Jar Library)-58¶

Select Add External JARs...

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Shared Library Development - (Eclipse Java Jar Library)-59¶

Open Exported jar folder and select

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Shared Library Development - (Eclipse Java Jar Library)-60¶

Or we can select by Add jar from current workspace

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Shared Library Development - (Eclipse Java Jar Library)-61¶

but in this step I won't add anything I'll add references later

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Shared Library Development - (Eclipse Java Jar Library)-62¶

we will have the following project

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Shared Library Development - (Eclipse Java Jar Library)-63¶

lets create a package

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Shared Library Development - (Eclipse Java Jar Library)-64¶

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Shared Library Development - (Eclipse Java Jar Library)-65¶

and lets create a main class for our application

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Shared Library Development - (Eclipse Java Jar Library)-66¶

check create main function

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Shared Library Development - (Eclipse Java Jar Library)-67¶

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Shared Library Development - (Eclipse Java Jar Library)-68¶

right click to project and add reference

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Shared Library Development - (Eclipse Java Jar Library)-69¶

you can enter same configurations from project properties

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Shared Library Development - (Eclipse Java Jar Library)-70¶

Lets export our library as a JAR file and then add to our classpath

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Shared Library Development - (Eclipse Java Jar Library)-71¶

Select JAR file

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Shared Library Development - (Eclipse Java Jar Library)-72¶

we configured output as

C:\Users\ugur.coruh\Desktop\java-export-sample\JavaSampleLib.jar

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Shared Library Development - (Eclipse Java Jar Library)-73¶

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Shared Library Development - (Eclipse Java Jar Library)-74¶

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Shared Library Development - (Eclipse Java Jar Library)-75¶

In the same export folder now we have JavaSampleLib.jar

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Shared Library Development - (Eclipse Java Jar Library)-76¶

return back to java-sample-app and then add this jar file to our project

Build Path->Add External Archives

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Shared Library Development - (Eclipse Java Jar Library)-77¶

you will see its added to reference libraries

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Shared Library Development - (Eclipse Java Jar Library)-78¶

in our JavaSampleApp.java we can use the following source codes

package ce103;

import java.io.IOException;

public class JavaSampleApp {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        System.out.println("Hello World!");

        JavaSampleLib.sayHelloTo("Computer");
        int result = JavaSampleLib.sum(5, 4);
        System.out.println("Results is" + result);
        System.out.printf("Results is %d \n", result);


        try {
            System.in.read();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}

Shared Library Development - (Eclipse Java Jar Library)-79¶

When we run application we will see similar output

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Shared Library Development - (Eclipse Java Jar Library)-80¶

Lets export this application with its dependent library

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Shared Library Development - (Eclipse Java Jar Library)-81¶

Select runnable jar

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Shared Library Development - (Eclipse Java Jar Library)-82¶

Set Launch configuration and Export destination

C:\Users\ugur.coruh\Desktop\java-export-sample\JavaSampleAppSingle.jar

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Shared Library Development - (Eclipse Java Jar Library)-83¶

In this option we will have single jar file

In the export folder we do not see reference libraries

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and we can run with command line

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Shared Library Development - (Eclipse Java Jar Library)-84¶

only change copy required libraries setting and then give a new name for new jar file and export

C:\Users\ugur.coruh\Desktop\java-export-sample\JavaSampleAppMultiple.jar

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Shared Library Development - (Eclipse Java Jar Library)-85¶

now we have a folder that contains our libraries referenced

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Shared Library Development - (Eclipse Java Jar Library)-86¶

in this file we can find our library

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Shared Library Development - (Eclipse Java Jar Library)-87¶

if we test our application we will see it will work

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if we delete JavaSampleLib.jar and then try running application we will get error

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Application Testing¶

C
C++
C#
Java

Unit Test Development¶

Wikipedia Unit Test Library List for Each Language

https://en.wikipedia.org/wiki/List_of_unit_testing_frameworks

Visual Studio Community Edition¶

C Unit Tests¶

Visual Studio Community Edition - C Unit Tests¶

There is no direct C source testing but with additional frameworks. Visual Studio can test C sources.
You can check the following entry
- https://stackoverflow.com/questions/65820/unit-testing-c-code
Recommended framework is Check
- https://libcheck.github.io/check/web/install.html
- https://github.com/libcheck/check/releases

Visual Studio Community Edition¶

C++ Unit Tests¶

Visual Studio Community Edition - C++ Unit Tests-1¶

C/C++ için birim testleri yazma - Visual Studio (Windows) | Microsoft Docs

Visual Studio Community Edition - C++ Unit Tests-2¶

Use cpp-sample-lib project and add

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Visual Studio Community Edition - C++ Unit Tests-3¶

Select Native Unit Test

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Visual Studio Community Edition - C++ Unit Tests-4¶

Set project path and name

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Visual Studio Community Edition - C++ Unit Tests-5¶

You will have cpp-sample-test project

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Visual Studio Community Edition - C++ Unit Tests-6¶

Add library project from references

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Visual Studio Community Edition - C++ Unit Tests-7¶

Add cpp-sample-lib to cpp-sample-test project

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Visual Studio Community Edition - C++ Unit Tests-8¶

cpp-sample-test.cpp

#include "pch.h"
#include "CppUnitTest.h"
#include "..\cpp-sample-lib\samplelib.h"

using namespace Microsoft::VisualStudio::CppUnitTestFramework;

namespace cppsampletest
{
    TEST_CLASS(cppsampletest)
    {
    public:

        TEST_METHOD(TestSumCorrect)
        {
            Assert::AreEqual(9, sum(4, 5));
        }

        TEST_METHOD(TestSumInCorrect)
        {
            Assert::AreEqual(10, sum(4, 5));
        }
    };
}

Visual Studio Community Edition - C++ Unit Tests-9¶

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Visual Studio Community Edition¶

C# Unit Tests¶

MSTest + .Net
Fine Code Coverage
NUnit + .NetCore

Visual Studio Community Edition (C# Unit Test + MSTestV2+.Net)-1¶

Install extension fine code coverage

https://marketplace.visualstudio.com/items?itemName=FortuneNgwenya.FineCodeCoverage

Visual Studio Community Edition (C# Unit Test + MSTestV2+.Net)-2¶

Create a .Net Framework Library

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Visual Studio Community Edition (C# Unit Test + MSTestV2+.Net)-3¶

Set project framework and path

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Visual Studio Community Edition (C# Unit Test + MSTestV2+.Net)-4¶

Create library functions

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Visual Studio Community Edition (C# Unit Test + MSTestV2+.Net)-5¶

using System;
using System.Collections.Generic;
using System.Text;

namespace cs_lib_sample
{
    public class SampleLibClass
    {
        public static string sayHelloTo(string name)
        {
            string result = String.Empty;

            if (!String.IsNullOrEmpty(name))
            {
                result = "Hello " + name;
            }
            else
            {
                result = "Hello There";
            }

            Console.WriteLine(result);

            return result;
        }

        public static int sum(int a, int b)
        {
            int c = 0;
            c = a + b;
            return c;
        }

        public int multiply(int a, int b)
        {
            return a * b;
        }
    }
}

Visual Studio Community Edition (C# Unit Test + MSTestV2+.Net)-6¶

Right click and then create unit test project

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Visual Studio Community Edition (C# Unit Test + MSTestV2+.Net)-7¶

Press OK

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Visual Studio Community Edition (C# Unit Test + MSTestV2+.Net)-8¶

Enter test code

using Microsoft.VisualStudio.TestTools.UnitTesting;
using cs_lib_sample;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace cs_lib_sample.Tests
{
    [TestClass()]
    public class SampleLibClassTests
    {

        [TestMethod()]
        public void testSayHelloTo()
        {


            Assert.AreEqual("Hello Computer", SampleLibClass.sayHelloTo("Computer"), "Regular say hello should work");
        }
        [TestMethod()]
        public void testSayHelloToWrong()
        {
            Assert.AreEqual("Hello All", SampleLibClass.sayHelloTo("Computer"), "Regular say hello won't work");
        }


        [TestMethod()]
        public void testSumCorrect()
        {
            Assert.AreEqual(9, SampleLibClass.sum(4, 5), "Regular sum should work");
        }

        [TestMethod()]
        public void testSumWrong()
        {
            Assert.AreEqual(10, SampleLibClass.sum(4, 5), "Regular sum shouldn't work");
        }

        [TestMethod()]
        public void testMultiply()
        {
            SampleLibClass sampleLib = new SampleLibClass();

            Assert.AreEqual(20, sampleLib.multiply(4, 5), "Regular multiplication should work");
        }


    }
}

Visual Studio Community Edition (C# Unit Test + MSTestV2+.Net)-9¶

Run tests

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Visual Studio Community Edition (C# Unit Test + MSTestV2+.Net)-10¶

you will code coverage and entered or passed branches

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Visual Studio Community Edition¶

C# Unit Test + NUnit + .NETCore¶

Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-1¶

Use cshar-sample-lib for this example
Create and add a unit test project to solution

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-2¶

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-3¶

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-4¶

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-5¶

Add project reference

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-6¶

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-7¶

SampleLibraryTestClasss in NUnit Project

using csharp_sample_lib;
using NUnit.Framework;

namespace csharp_sample_lib_test
{
    public class SampleLibraryTestClass
    {
        sampleLibClass sampleLib;

        [SetUp]
        public void Setup()
        {
            sampleLib = new sampleLibClass();
        }

        [Test]
        public void testSayHelloTo()
        {
            Assert.AreEqual("Hello Computer", sampleLibClass.sayHelloTo("Computer"), "Regular say hello should work");
        }

        [Test]
        public void testSayHelloToWrong()
        {
            Assert.AreEqual("Hello All", sampleLibClass.sayHelloTo("Computer"), "Regular say hello won't work");
        }


        [Test]
        public void testSumCorrect()
        {
            Assert.AreEqual(9, sampleLibClass.sum(4, 5), "Regular sum should work");
        }

        [Test]
        public void testSumWrong()
        {
            Assert.AreEqual(10, sampleLibClass.sum(4, 5), "Regular sum shouldn't work");
        }

        [Test]
        public void testMultiply()
        {
            Assert.AreEqual(20, sampleLib.multiply(4, 5), "Regular multiplication should work");
        }
    }
}

Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-8¶

Sample class library

using System;

namespace csharp_sample_lib
{
    public class sampleLibClass
    {
        public static string sayHelloTo(string name)
        {
            string result = String.Empty;

            if (!String.IsNullOrEmpty(name))
            {
                result = "Hello " + name;
            }
            else
            {
                result = "Hello There";
            }

            Console.WriteLine(result);

            return result;
        }

        public static int sum(int a, int b)
        {
            int c = 0;
            c = a + b;
            return c;
        }

        public int multiply(int a, int b)
        {
            return a * b;
        }
    }
}

Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-9¶

Open test explorer and run tests

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-10¶

or you can run from project

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-11¶

Also we can create unit test from library class,
Right click the sampleLibClass and select create unit tests but this option do not provide nunit tests.

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-12¶

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-13¶

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-14¶

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-15¶

using Microsoft.VisualStudio.TestTools.UnitTesting;
using csharp_sample_lib;
using System;
using System.Collections.Generic;
using System.Text;

namespace csharp_sample_lib.Tests
{
    [TestClass()]
    public class sampleLibClassTests
    {
        [TestMethod()]
        public void sayHelloToTest()
        {
            Assert.Fail();
        }

        [TestMethod()]
        public void sumTest()
        {
            Assert.Fail();
        }

        [TestMethod()]
        public void multiplyTest()
        {
            Assert.Fail();
        }
    }
}

Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-16¶

We will not commit this changes and continue from nunit test project, the fine code
Coverage also work for nunit test but not provide inline highlighting
If we run tests we will have the following outputs

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Visual Studio Community Edition (C# Unit Test+NUnit+.NETCore)-17¶

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Inline code highlight is part of enterprise visual studio edition
- Analyzing code coverage in Visual Studio - DEV Community

Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)¶

Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-1¶

TL;DR¶

Additional information you can use OpenCover + Nunit Runner + Report Generator together to setup a code coverage report but it has complex batch running process. After a few try I decided to use fine code coverage but here is the usage not tested well.
First unit test runner tool doesn't support .Net Core

c# - The NUnit 3 driver encountered an error while executing reflected code (NUnit.Engine.NUnitEngineException) - Stack Overflow

Follow the instructions on the link
- CMD OpenCover · sukhoi1/Useful-Notes Wiki · GitHub
Install OpenCover, ReportGenerator, Nunit,Runners packages then use the package installation folder to get tools that you need

Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-2¶

Here is a sample for open cover, select package and copy path

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-3¶

Goto path and tools

C:\Users\ugur.coruh\.nuget\packages\opencover\4.7.1221

You need to setup some batch similar with following

run-test-coverage.bat

set pathA=C:\Users\ugur.coruh\.nuget\packages\opencover\4.7.1221\tools
set pathB=C:\Users\ugur.coruh\.nuget\packages\nunit.consolerunner\3.12.0\tools
set pathC=C:\Users\ugur.coruh\.nuget\packages\reportgenerator\4.8.13\tools\netcoreapp3.0
set dllpath=C:\Users\ugur.coruh\Desktop\csharp-sample-lib\csharp-sample-lib-test\bin\Debug\netcoreapp3.1

"%pathA%\OpenCover.Console.exe" ^
-targetargs:"%dllpath%\csharp-sample-lib-test.dll" ^
-filter:"+[csharp-sample-lib*]* -[*test]*" ^
-target:"%pathB%\nunit3-console.exe" ^
-output:"%dllpath%\coverReport.xml" ^
-skipautoprops -register:user && "%pathC%\ReportGenerator.exe" -reports:"%dllpath%\coverReport.xml" -targetdir:""%dllpath%\coverage"
pause

Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-4¶

but nunit3-console.exe gives error

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-5¶

For this compatibility issues I prefer to use fine code coverage extension.
OpenCover related studies
- Code coverage of manual or automated tests with OpenCover for .NET applications – Automation Rhapsody
- Code coverage of .NET Core unit tests with OpenCover – Automation Rhapsody
Sample OpenCover report
- Summary - Coverage Report

Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-6¶

Download and Setup OpenCover, NUnit Console, Report Generator without Package Manager¶

You can also download the tools from github project pages and install on your operating system,

Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-7¶

OpenCover¶

Releases · OpenCover/opencover · GitHub

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-8¶

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-9¶

Select advanced and then install for all users

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-10¶

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-11¶

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-12¶

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-13¶

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-14¶

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-15¶

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-16¶

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-17¶

ReportGenerator¶

Release ReportGenerator_4.8.13 · danielpalme/ReportGenerator · GitHub

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-18¶

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-19¶

NUnit Console¶

Downloads

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-20¶

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-21¶

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-22¶

Download setup

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-23¶

Install setup

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Visual Studio Community Edition (C# Unit Test+OpenCover + Nunit Runner + Report)-24¶

NUnit + MSTest Batch Report Generation (Not Tested)¶

Java Unit Tests¶

Eclipse IDE (JUnit4 , JUnit5)¶

Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

In this sample we will create two example for similar library

Please check the following links

JUnit 5 tutorial - Learn how to write unit tests

JUnit 5

JUnit 5 User Guide

https://www.eclemma.org/

JUnit Hello World Example - Examples Java Code Geeks - 2021

https://yasinmemic.medium.com/java-ile-unit-test-yazmak-birim-test-ca15cf0d024b

Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

In normal java application we can right click the project java-sample-lib and add Junit case

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4, JUnit5) + Java Unit Test¶

and you will have the following test class

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Eclipse IDE (JUnit4, JUnit5) + Java Unit Test¶

Now we will create tests that check our function flowchart and return values

We need to cover all code branches that we coded

I have updated JavaSampleLib.java as follows to check outputs

JavaSampleLib.java

package ce103;

public class JavaSampleLib {

    public static String sayHelloTo(String name) {

        String output = "";

        if(!name.isBlank() && !name.isEmpty()){
            output = "Hello "+name;
        }else {
            output = "Hello There";
        }

        System.out.println(output);

        return output;
    }

    public static int sum(int a,int b)
    {
        int c = 0;
        c = a+b;
        return c;
    }

    public int multiply(int a, int b) {
        return a * b;
    }

//    public static void main(String[] args) {
//        // TODO Auto-generated method stub
//        System.out.println("Hello World!");
//
//        JavaSampleLib.sayHelloTo("Computer");
//        int result = JavaSampleLib.sum(5, 4);
//        System.out.println("Results is" + result);
//        System.out.printf("Results is %d \n", result);
//
//
//        try {
//            System.in.read();
//        } catch (IOException e) {
//            // TODO Auto-generated catch block
//            e.printStackTrace();
//        }
//
//    }

}

Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

and JavaSampleLibTest.java

package ce103;

import static org.junit.jupiter.api.Assertions.*;

import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.RepeatedTest;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;

class JavaSampleLibTest {

    JavaSampleLib sampleLib;

    @BeforeAll
    static void setUpBeforeClass() throws Exception {
    }

    @AfterAll
    static void tearDownAfterClass() throws Exception {
    }

    @BeforeEach
    void setUp() throws Exception {
        sampleLib = new JavaSampleLib();
    }

    @AfterEach
    void tearDown() throws Exception {
    }

    @Test
    @DisplayName("Simple Say Hello should work")
    void testSayHelloTo() {
        assertEquals("Hello Computer", JavaSampleLib.sayHelloTo("Computer"), "Regular say hello should work");
    }

    @Test
    @DisplayName("Simple Say Hello shouldn' work")
    void testSayHelloToWrong() {
        assertEquals("Hello All", JavaSampleLib.sayHelloTo("Computer"), "Regular say hello won't work");
    }


    @Test
    @DisplayName("Simple sum should work")
    void testSumCorrect() {
        assertEquals(9, JavaSampleLib.sum(4, 5), "Regular sum should work");
    }

    @Test
    @DisplayName("Simple sum shouldn't work")
    void testSumWrong() {
        assertEquals(10, JavaSampleLib.sum(4, 5), "Regular sum shouldn't work");
    }

    @Test
    @DisplayName("Simple multiplication should work")
    void testMultiply() {
        assertEquals(20, sampleLib.multiply(4, 5), "Regular multiplication should work");
    }

    @RepeatedTest(5)
    @DisplayName("Ensure correct handling of zero")
    void testMultiplyWithZero() {
        assertEquals(0, sampleLib.multiply(0, 5), "Multiple with zero should be zero");
        assertEquals(0, sampleLib.multiply(5, 0), "Multiple with zero should be zero");
    }

    public static int[][] data() {
        return new int[][] { { 1, 2, 2 }, { 5, 3, 15 }, { 121, 4, 484 },{ 2, 2, 2 } };
    }

    @ParameterizedTest
    @MethodSource(value = "data")
    void testWithStringParameter(int[] data) {
        JavaSampleLib tester = new JavaSampleLib();
        int m1 = data[0];
        int m2 = data[1];
        int expected = data[2];
        assertEquals(expected, tester.multiply(m1, m2));
    }

}

Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

if we run tests

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

we will see all results there

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

also we can see the code coverage of tests

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

when we open our source code (just close and open again another case highlighting will not work) you will see tested part of your codes

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

Maven Java Application + JUnit¶

Lets create Maven project with tests

Create a maven project

File -> New -> Maven Project

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

Lets convert our sample java-sample-lib directories to standard folder structure for test and app division

Maven – Introduction to the Standard Directory Layout

Also for intro you can use this

JUnit Hello World Example - Examples Java Code Geeks - 2021

Eclipse
Maven
Java
JUnit 4.12 (pulled by Maven automatically)

Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

Lets give new sample java-sample-lib-mvnbut in this time we will create a maven project

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

pom.xml file

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.ce103</groupId>
  <artifactId>java-sample-lib-ext</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>Java Sample Lib</name>
  <description>Java Sample with Unit Test</description>
</project>

Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

we will add JUnit 5 for our project

<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.ce103</groupId>
    <artifactId>java-sample-lib-ext</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>Java Sample Lib</name>
    <description>Java Sample with Unit Test</description>

    <dependencies>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-params</artifactId>
            <version>5.7.1</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>

Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

it will automatically download libraries

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

Create java sample library in ce103 package, first create java package

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

In this package create library class

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

copy content from other library

package ce103;

public class JavaSampleLib {

public static String sayHelloTo(String name) {

        String output = "";

        if(!name.isBlank() && !name.isEmpty()){
            output = "Hello "+name;
        }else {
            output = "Hello There";
        }

        System.out.println(output);

        return output;
    }

    public static int sum(int a,int b)
    {
        int c = 0;
        c = a+b;
        return c;
    }

    public int multiply(int a, int b) {
        return a * b;
    }


}

Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

Now lets create tests inf src/test/java

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4 , JUnit5) + Java Unit Test¶

create a JUnit Case

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Eclipse IDE (JUnit4, JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4, JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4, JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4, JUnit5) + Java Unit Test¶

you will simple template

package ce103;

import static org.junit.jupiter.api.Assertions.*;

import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

class JavaSampleLibTest {

    @BeforeAll
    static void setUpBeforeClass() throws Exception {
    }

    @AfterAll
    static void tearDownAfterClass() throws Exception {
    }

    @BeforeEach
    void setUp() throws Exception {
    }

    @AfterEach
    void tearDown() throws Exception {
    }

    @Test
    void testSayHelloTo() {
        fail("Not yet implemented");
    }

    @Test
    void testSum() {
        fail("Not yet implemented");
    }

    @Test
    void testMultiply() {
        fail("Not yet implemented");
    }

}

Eclipse IDE (JUnit4, JUnit5) + Java Unit Test¶

now lets copy tests from other projects

Convert source codes to java codes...

Eclipse IDE (JUnit4, JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4, JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4, JUnit5) + Java Unit Test¶

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Eclipse IDE (JUnit4, JUnit5) + Java Unit Test¶

That's a part of java unit testing...

TDD (Test Driven Development)¶

Test Driven Development (TDD)
- https://en.wikipedia.org/wiki/Test-driven_development
Acceptance Test Driven Development (ATDD)
- https://en.wikipedia.org/wiki/Acceptance_test-driven_development
Also check out
- https://en.wikipedia.org/wiki/Kent_Beck
Extreme Programming
- https://en.wikipedia.org/wiki/Extreme_programming
Software Design Patterns
- https://en.wikipedia.org/wiki/Software_design_pattern

Test and Deployment Automation Management¶

There are several Continues-Integration services online as follow; - Travis-CI - Appveyor - Jenkins - CircleCI - GitLab - Pantheon - GitHub - Bitrise - Flosum - Buddy - Semaphore

Test and Deployment Automation Management¶

Github provides Github Actions for Releases and Tests
Jenkins has on promise solutions private development

Test and Deployment Automation Management¶

GitHub Actions provide several actions and marketspace
- https://github.com/marketplace/actions/build-c-project

Also, we Can Provide Our Custom Actions

name: hello-world
on: push
jobs:
  my-job:
    runs-on: ubuntu-latest
    steps:
      - name: my-step
        run: echo "Hello World!"

Test and Deployment Automation Management¶

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Test and Deployment Automation Management¶

https://github.com/ucoruh/project-cleaner/blob/main/.github/workflows/dotnet-desktop.yml

This action build c# application and generates setup manually.

Also there is a nice web example
- https://dev.to/geromegrignon/github-actions-full-ci-cd-javascript-workflow-39om

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References¶

GitHub - MicrosoftDocs/cpp-docs: C++ Documentation

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Last update: October 3, 2022