Pet Park

Goal

The goal of this exercise is to develop a pet park smart contract. The basic structure of this contract has been laid out for you in contracts/PetPark.sol. We can have 5 kinds of animals in our pet park

• Fish (AnimalType: 1)
• Cat (AnimalType: 2)
• Dog (AnimalType: 3)
• Rabbit (AnimalType: 4)
• Parrot (AnimalType: 5)

Complete this contract with following specifications for each function

• add

  • Takes Animal Type and Count. Gives shelter to animals in our park.
  • Only contract owner (address deploying the contract) should have access to this functionality.
  • Emit event Added with parameters Animal Type and Animal Count.

• borrow

  • Takes Age, Gender and Animal Type.
  • Can borrow only one animal at a time. Use function giveBackAnimal to borrow another animal.
  • Men can borrow only Dog and Fish.
  • Women can borrow every kind, but women aged under 40 are not allowed to borrow a Cat.
  • Throw an error if an address has called this function before using other values for Gender and Age.
  • Emit event Borrowed with parameter Animal Type.

• giveBackAnimal

  • Throw an error if user hasn't borrowed before.
  • Emit event Returned with parameter Animal Type.

Evaluation

• Create a fork of this repo

• Create a new branch with your name. You can use the following command

  git checkout -b my-name
  

• Install all dependencies

  npm install
  

• Make changes to the contract/PetPark.sol file. The tests in test/PetPark.spec.js should run successfully.

• Run Tests

  npm test
  

• Create a pull request from your forked repo to main branch of original repo to run the github workflow.

Note

• The error strings (mentioned in revert statement) must be same as the ones mentioned in tests.
• Use modifier where appropriate.