Software Requirements Specification: DetailedSpeedSetter

Introduction

The DetailedSpeedSetter main class is given a current speed measured in mi/hr and an optional speed limit in km/hr, informs the dashboard if the vehicle is exceeding the speed limit, and displays the equivalent current speed in km/hr.

Existing Components

The Text class contains functions that can be used to convert from a String to a number.

The Dashboard class contains a function that can be used to display the current speed. It also contains a function named setSpeeding() that is passed a boolean indicating whether or not the Dashboard should inform the driver that she/he is exceeding the speed limit.

Requirements of New Components

The system must satisfy the following physical requirements: Definition

PR-1 The main class must be named DetailedSpeedSetter

PR-2 The main class must include a correct implementation of the following function:

    /**
     * Determines whether the given speed exceeds the given limit
     *
     * @param speed      The speed in km/hr
     * @param limit      The speed limit in km/hr
     * @return           true if speed exceeds limit and false otherwise
     */
    public static boolean isSpeeding(double speed, double limit)
    {


    }

The system must satisfy the following operational requirements: Definition

OR-1 Command-line argument 0 must contain a String representation of the current speed in mi/hr.

OR-2 Command-line argument 1, if it exists, must contain a String representation of the speed limit in km/hr.

OR-3 If there is only one command-line argument, the system must use the default speed limit of 40.0 km/hr.

OR-4 If the user-provided speed limit in km/hr is smaller than the smallest allowable speed limit (which is 20 km/hr), the system must use the smallest allowable speed limit.

OR-5 The main class must use the Converter class for all conversions of units.

OR-6 The main class must determine whether the current speed exceeds the speed limit using the isSpeeding() function described above.

OR-7 The main class must call the setSpeeding() function in the Dashboard class to indicate whether or not the Dashboard should inform the driver that she/he is exceeding the speed limit.

OR-8 The main class must pass the setSpeed() function in the Dashboard class the current speed in km/hr.