We have a function randomValue template function in unit and performance tests (test/unit_tests/unit_test_helper.h and test/performance_tests/performance_test_helper.h) which has a body:

    template <typename data>
    data randomValue( data minimum, int maximum )
    {
        if( maximum <= 0 ) {
            return 0;
        }
        else {
            data value = static_cast<data>(rand() % maximum);

            if( value < minimum )
                value = minimum;

            return value;
        }
    }

This function leads to misunderstand because maximum value is actually a limit which cannot be reached. There are multiple possible solutions to this problem:

1. Change rand() % maximum to rand() % (maximum + 1). After this we have to change all calls of this function.
2. Change maximum variable name to something more understandable
3. Add new functions which can use a full range of values for specific type of variables. For example:

bool randomBool();
uint8_t randomUint8_t();

Then we would cover almost all cases for initial function usage.