Function: exerciseTokenOption(uint256 _tokensToExercise)

This function is used to exercise the token option by grantee.

Inputs

• _tokensToExercise

  • Control: Arbitrary.

  • Constraints: Nonzero and less than exercisable tokens.

  • Impact: Amount of tokens to exercise.

Branches and code coverage

Intended branches

• Calculate the payment amount matching the tokens to exercise.

  Test coverage

• Transfer the payment amount from the grantee to authority.

  Test coverage

• Increase the exercised tokens.

  Test coverage

Negative behavior

• Revert if the caller is not the grantee.

  Negative test

• Revert if the allocation is already terminated and has reached the short stop time.

  Negative test

• Revert if the tokens to exercise is zero.

  Negative test

• Revert if the tokens to exercise is more than the exercisable tokens.

  Negative test

• Revert if grantee does not have enough balance to pay.

  Negative test