{
  "tcID":"INT-SOL-106",
  "tcName":"ERC721.approve2.toZero",
  "deploy":{
    "ERC721Mock":{
      "file":"contracts/mocks/ERC721Mock.sol",
      "constructorParams":[]
    }
  },
  "test":[
    {
      "tx":{
        "from":"env.sender",
        "type":"LEGACY",
        "to":"randomMinter",
        "value":"1000000000000000000",
        "gas":100000,
        "data":""
      },
      "expected":{
        "status":true
      }
    },
    {
      "tx":{
        "from":"env.sender",
        "type":"LEGACY",
        "to":"randomOwner",
        "value":"1000000000000000000",
        "gas":100000,
        "data":""
      },
      "expected":{
        "status":true
      }
    },
    {
      "send":{
        "from":"randomMinter",
        "to":"ERC721Mock",
        "gas":100000,
        "method":"mint",
        "params":["randomOwner", "1"]
      },
      "expected":{
        "status":true
      }
    },
    {
      "send":{
        "from":"randomMinter",
        "to":"ERC721Mock",
        "gas":100000,
        "method":"mint",
        "params":["randomOwner", "2"]
      },
      "expected":{
        "status":true
      }
    },
    {
      "send":{
        "from":"randomOwner",
        "to":"ERC721Mock",
        "gas":100000,
        "method":"approve",
        "params":["randomApproved", "1"]
      },
      "expected":{
        "status":true
      }
    },
    {
      "send":{
        "from":"randomOwner",
        "to":"ERC721Mock",
        "gas":100000,
        "method":"approve",
        "params":["0x0000000000000000000000000000000000000000", "1"]
      },
      "expected":{
        "status":true,
        "events":{
          "Approval": {
            "owner":"randomOwner",
            "approved":"0x0000000000000000000000000000000000000000",
            "tokenId":"1"
          }
        }
      }
    },
    {
      "call":{
        "from":"env.sender",
        "to":"ERC721Mock",
        "method":"getApproved",
        "params":["1"]
      },
      "expected":{
        "status":true,
        "returns":"0x0000000000000000000000000000000000000000"
      }
    }
  ]
}