Rock Paper Scissors

Nada program

src/rock_paper_scissors.py

from nada_dsl import *

def nada_main():
    player_1 = Party(name="Player_1") 
    player_2 = Party(name="Player_2")

    # Possible play choices
    # 0 - Rock
    # 1 - Paper
    # 2 - Scissors 
    choice_player_1 = SecretInteger(Input(name="choice_player_1", party=player_1))
    choice_player_2 = SecretInteger(Input(name="choice_player_2", party=player_2))

    # modular arithmetic, cyclical RPS logic
    result = (choice_player_1 - choice_player_2) % Integer(3)

    # Which player won?
    # 0 - Tie
    # 1 - Player 1 won
    # 2 - Player 2 won
    winner = (
        (result > Integer(0)).if_else(
            (result > Integer(1)).if_else(Integer(2), Integer(1)),
            Integer(0)
        )
    )

    out = Output(winner, "winning_player_number", player_1)

    return [out]

View on GitHub

Test - Tie

tests/rock_paper_scissors_tie.yaml

---
program: rock_paper_scissors
inputs:
  choice_player_1: 1 # player 1 plays paper
  choice_player_2: 1 # player 2 plays paper
expected_outputs:
  winning_player_number: 0 # neither player wins - it's a tie

View on GitHub

Test - Rock wins

tests/rock_paper_scissors_rock.yaml

---
program: rock_paper_scissors
inputs:
  choice_player_1: 0 # player 1 plays "rock"
  choice_player_2: 2 # player 2 plays "scissors"
expected_outputs:
  winning_player_number: 1 # player 1 wins; rock beats scissors

View on GitHub

Test - Paper wins

tests/rock_paper_scissors_paper.yaml

---
program: rock_paper_scissors
inputs:
  choice_player_1: 0 # player 1 plays rock
  choice_player_2: 1 # player 2 plays paper
expected_outputs:
  winning_player_number: 2 # player 2 wins; paper beats rock

View on GitHub

Test - Scissors wins

tests/rock_paper_scissors_scissors.yaml

---
program: rock_paper_scissors
inputs:
  choice_player_1: 2 # player 1 plays scissors
  choice_player_2: 1 # player 2 plays paper
expected_outputs:
  winning_player_number: 1 # player 1 wins; scissors beats paper

View on GitHub

Run and test the rock_paper_scissors program

1. Open "Nada by Example"

2. Run the program with inputs from the test file

nada run rock_paper_scissors_tie

3. Test the program with inputs from the test file against the expected_outputs from the test file

nada test rock_paper_scissors_tie