NFTMarket Contract

Overview

The NFTMarket contract allows users to list NFTs for sale at any specified ERC20 price and enables the purchase of NFTs using ERC20 tokens.

Features

• List NFTs for sale with a customizable ERC20 price.
• Purchase specified NFTs using ERC20 tokens.

Testing Requirements

Listing NFTs

• Success Case: Test successful listing of an NFT and assert the listing event.
• Failure Cases: Test various failure scenarios for listing, asserting the relevant error messages and events.

Purchasing NFTs

• Success Case: Test successful purchase of an NFT and assert the purchase event.
• Self-purchase: Test the scenario where a user attempts to purchase their own NFT.
• Duplicate Purchase: Test the case where an NFT is purchased multiple times and assert the appropriate error messages.
• Incorrect Payment Amounts: Test scenarios where the payment amount is either too high or too low, asserting the relevant error messages and events.

Fuzz Testing

• Randomly list NFTs for sale with prices ranging from 0.01 to 10,000 tokens.
• Randomly use any address to attempt to purchase NFTs.

(TODO) Immutability Testing

• Ensure that the NFTMarket contract cannot hold any ERC20 tokens regardless of the buy/sell activities.

Conclusion

This contract provides a robust framework for listing and purchasing NFTs while incorporating comprehensive testing to ensure reliability and correctness.