expMonth function
Generate a random integer between 1 and 12, or a random integer between the current month and 12 if future is true.
Args: future (bool): If true, the expiration month will be in the future.
Returns: A string
Implementation
String expMonth({
bool? future,
}) {
int value = integer(max: 12);
if (future != null && future) {
final month = DateTime.now().month + 1;
value = floating(min: month >= 12 ? 0 : month, max: 12).ceil();
}
return value.toString();
}