This asserter validates if the given data is of type integer.
You can use the integer asserter as To::beInteger() or To::beInt().
In order to refine the validation, the following functions are available:
This function checks if the given integer is greater or equals than a minimum.
You can use this function as To::beInteger()->withMin($min).
This function checks if the given integer is lower or equals than a maximum.
You can use this function as To::beString()->withMax($max).