Test Driven Development in Ruby Using Linux System

Test-Driven Development (TDD) is a powerful methodology that emphasizes writing tests before implementing code, ensuring a more robust and error-resistant software development process. In this blog post, we’ll explore how to implement TDD in Ruby on a Kali Linux system, providing step-by-step guidance for setting up your environment and writing effective tests.

Prerequisites:

Install Ruby*:* Ensure that Ruby is installed on your Kali Linux system. You can use the following command to install Ruby:

sudo apt-get install ruby-full
Create a new Ruby project: Set up a new directory for your Ruby project. Navigate to the project directory in the terminal.

mkdir game

cd game

For Simple Test:

Create a ruby file named “game.rb”.

touch game.rb
Open file using Vim.

vim game.rb

Paste this code then,

 class RockPaperScissors
  def play(player1, player2)
    if (player1 == "rock" && player2 == "scissors" || 
        player1 == "scissors" && player2 == "paper" ||
        player1 == "paper" && player2 == "rock")
        'Player 1 Wins'
    elsif(player1 == player2)
        'Tie'
    else
        'Player 2 Wins'
    end
  end
 end

 Ctrl+C

 :wq!

Create test file named “game_test.rb”
```
 touch game_test.rb
```
Open test file
```
 vim game_test.rb
```

Paste this code

 require_relative 'game.rb'
 require 'minitest/autorun'
 describe "RockPaperScissors" do
  it "returns 'Player 1 Wins' when rock vs scissors" do
    # Assemble
    # Action
    result = RockPaperScissors.new.play("rock", "scissors")
    # Assert
    assert_equal('Player 1 Wins', result)
  end
  it "returns 'Player 1 Wins' when scissors vs paper" do
    result = RockPaperScissors.new.play("scissors", "paper")
    assert_equal('Player 1 Wins', result)
  end
  it "returns 'Player 1 Wins' when paper vs rock" do
    result = RockPaperScissors.new.play("paper", "rock")
    assert_equal('Player 1 Wins', result)
  end
  it "returns 'Player 2 Wins' when scissors vs rock" do
    result = RockPaperScissors.new.play("scissors", "rock")
    assert_equal('Player 2 Wins', result)
  end
  it "returns 'Player 2 Wins' when paper vs scissors" do
    result = RockPaperScissors.new.play("paper", "scissors")
    assert_equal('Player 2 Wins', result)
  end
  it "returns 'Player 2 Wins' when rock vs paper" do
    result = RockPaperScissors.new.play("rock", "paper")
    assert_equal('Player 2 Wins', result)
  end
  it "returns 'Tie' when scissors vs scissors" do
    result = RockPaperScissors.new.play("scissors", "scissors")
    assert_equal('Tie', result)
  end
  it "returns 'Tie' when paper vs paper" do
    result = RockPaperScissors.new.play("paper", "paper")
    assert_equal('Tie', result)
  end
  it "returns 'Tie' when rock vs rock" do
    result = RockPaperScissors.new.play("rock", "rock")
    assert_equal('Tie', result)
  end
 end

 Ctrl+C

 :wq!

Run the game_test.rb file
```
 ruby game_test.rb
```

Conclusion: Test-Driven Development with Minitest in Ruby on a Kali Linux system provides a lightweight yet effective approach to writing reliable code. By following the steps outlined in this guide, you can establish a TDD workflow for your Ruby projects using Minitest. Happy testing and coding!

Test Driven Development in Ruby Using Linux System

Table of contents

Prerequisites: