Solidity-Ebay Clone with Unit Testing

1. There are 2 structures in the project Auction and offer
2. Seller can create an auction for any item with minimum expected amount
3. Buyers can bid on any items available. Price in bidding should be grater than the minimum value set by a seller.
4. Best offer will be selected by seller and item will be owned by whoever offered best price. All the other participants will receive their ethers back after the buyer is confirmed
5. You can see all the auctions and offers by a particular user.
6. Unit tests are added for all the functions.