https://github.com/albertllousas/tennis-kata-in-haskell

Tennis kata, haskell, TDD, state monad, 30 lines ...
https://github.com/albertllousas/tennis-kata-in-haskell

Last synced: about 2 months ago
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Tennis kata, haskell, TDD, state monad, 30 lines ...

• Host: GitHub
• URL: https://github.com/albertllousas/tennis-kata-in-haskell
• Owner: albertllousas
• License: bsd-3-clause
• Created: 2022-07-23T04:57:26.000Z (almost 3 years ago)
• Default Branch: master
• Last Pushed: 2024-05-13T10:18:29.000Z (about 1 year ago)
• Last Synced: 2025-01-30T22:48:25.225Z (3 months ago)
• Language: Haskell
• Size: 10.7 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: ChangeLog.md
  • License: LICENSE

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README

        
# tennis-kata-using-state-monad

Cool [Tennis kata](https://codingdojo.org/kata/Tennis/) to use the State Monad and practice TDD.

## Description

This Kata is about implementing a simple tennis game. The scoring system is rather simple:

1. Each player can have either of these points in one game “love” “15” “30” “40”

2. If you have 40 and you win the point you win the game, however there are special rules.

3. If both have 40 the players are “deuce”.

4. If the game is in deuce, the winner of a point will have advantage

5. If the player with advantage wins the ball he wins the game

6. If the player without advantage wins they are back at deuce.

## Tests

```shell

> stack test

Tennis

  acceptance

    Play a full game

  game rules

    If a player wins a point, it's current score is increased

    if a player have 40 and they win the point, then they win the game

    If both have 40 the players are “deuce”

    If the game is in deuce, the winner of a point will have advantage

    If the player with advantage wins the ball they win the game

    If the player without advantage wins they are back at deuce.

Finished in 0.0017 seconds

```