Function: respondToChallenge(address _validator, string _ipfsResponse)

This facilitates responding to a challenge.

Inputs

• _validator

  • Control: Fully controlled by the caller.

  • Constraints: Checked that the validator is registered.

  • Impact: The validator that gave the challenge.

• _ipfsResponse

  • Control: Fully controlled by the caller.

  • Constraints: None.

  • Impact: The IPFS of the response.

Branches and code coverage

Intended branches

• Assumed that the _validator actually challenged the caller with the specific ipfsChallenge. Currently not explicitly checked.

  Test coverage

• Assumed that the challenge was given for this contract's specific competition. Currently not explicitly checked.

  Test coverage

• Set the ipfsResponse of the modelerChallenges mapping for the modeler.

  Test coverage

• Assure that the _validator has been registered.

  Test coverage

Negative behavior

• Should not reuse a response that has already been used. Currently not checked.

  Negative test

• Should not allow overriding a response to a challenge. Currently not checked.

  Negative test

• Should not allow calling this while the contract is paused.

  Negative test

• Should not allow a msg.sender that has not registered as a modeler to respond to a challenge.

  Negative test