Divide by zero allows operations with Infinity #2
Description
Dividing by zero displays the Infinity symbol, which is arguably correct. However, the user can then select an operation (e.g. minus ("-") ) and the calculator allows the user to perform operations with Infinity. This may be undesired. One possible solution is to clear out the state if the user attempts to do this by adding a check on the currentOperand in the CHOOSE_OPERATION action to clear the state if currentOperand is Infinity
For example, add on line 46:
if (state.currentOperand == Number.POSITIVE_INFINITY) return {};
STEPS TO REPRODUCE
Press 3
Press ÷
Press 0
Press =
Press +
Press 9
Press =
EXPECTED RESULT
The calculator displays 9, waiting for an operation to be done with that number
ACTUAL RESULT
The calculator displays Infinity symbol because Infinity plus 9 is Infinity