/oop-prototype-car

Welcome to the Prototype Body Shop. Let's build a car! [javascript, oop, testing]

Primary LanguageJavaScriptOtherNOASSERTION

Prototype Body Shop

The idea of this lab is to get you comfortable with Object Oriented Programming (OOP) and introduce you to Test Driven Development (TDD) in JavaScript. By the end you should be comfortable working with objects and writing prototypes.

All of the tests have been written for you, so all you'll need to do is run them. No need to create any Car objects, because the tests will do that for you.

If any of the tests errors are unclear, take a look at what the test is running within test/carTest.js

Getting Started

  • Fork and clone this repository
  • Run yarn install to install dependencies
  • yarn start - run main.js
  • yarn test - run test suite
  • yarn run lint:js - lint JS

Requirements

We need a prototype for a car. Can you help us with your sweet JavaScript skills?

Listen to the green old man

But don't worry we'll go step by step.

Phase I

Under the given file carFn.js, run all the functions of a Car object on main.js. The requirements to satisfy are listed below:

  • Create an object of Car that has the following properties:
    • make
    • model
    • year
    • color
    • seats
    • previousOwners
      • should be initialized to an empty array, [].
    • owner
      • should be initialized to manufacturer.
    • running
      • should be initialized to false.
  • Object Car must also has these following functions as properties
    • sell(newOwner)
      • We should able to sell a car to someone, which should update the owner and previousOwners array.
      • This takes 1 string parameter for the new owner's name.
      • The old owner should be pushed to the end of the previousOwners array.
      • The new owner should be set to the parameter passed in.
    • paint(newColor)
      • We should be able to paint the car a new color
      • This takes 1 string parameter for the new color's name
      • This should update the color of the car to the new color.

Phase II

Under the given file Car.js, convert the previous implementation of object into Class literal notation. Nothing else should be added to the class implementation at this point.

Make sure to update the main.js file accordingly.

Phase III

Create a test to check whether you've passed the previous requirements. Implement and test the following methods:

feel free to test beyond the suggestions below

Normal cases:

  • var c1 = new Car('Honda', 'Vuzel', 2017, 'red', 7)

    • Should expect all properties are set as per initial state
      • e.g. c1.make === 'Honda', etc
    • Should expect c1.owner === 'manufacturer'
    • Should expect c1.running === false

  • c1.sell('prima')

    • Should expect c1.owner to 'prima'
    • Should expect c1.previousOwners to ['manufacturer']

  • c1.paint('blue')

    • Should expect c1.color to 'blue'

Abnormal cases:

  • var c2 = new Car()

    • Should return === "car can't be instantiated, required parameters are not given"

  • c1.sell(0)

    • Should return === 'car can only be sold to a real person with name, please input a string'

  • c1.paint(false)

    • Should return === 'car can only be painted with real color, please input a string'

Run all the tests by running yarn test

Phase IV

Continue to write more tests, try to create the assertion first at carTest.js before writing the implementation code on Car.js

  • Car.start()

    • Should change the running value of the car to true.

  • Car.off()

    • Should change the running value to false.

  • Car.driveTo(destination)

    • Should console.log "driving to <destination>", but only if the car is running.
    • Should return true if it is successful and false if it is not.

  • Car.park()

    • Only if the car is not running, you should console.log parked!!.
    • Should return true if it is successful and false if it is not.

  • Must have the following constructor parameters:

    • make
    • model
    • year
    • color
    • seats

  • By default, a new Car should have the following values initialized in the constructor:

    • previousOwners
      • should be initialized to an empty array, [].
    • owner
      • should be initialized to manufacturer.
    • running
      • should be initialized to false.

  • We should be able to do the following with our car:

    • Car.sell(newOwner)
      • We should able to sell a car to someone, which should update the owner and previousOwners array.
      • This takes 1 string parameter for the new owner's name.
      • The old owner should be pushed to the end of the previousOwners array.
      • The new owner should be set to the parameter passed in.
    • Car.paint(newColor)
      • We should be able to paint the car a new color
      • This takes 1 string parameter for the new color's name
      • This should update the color of the car to the new color.

Phase V

Implement and test the following methods:

  • Car.start()
    • Should change the running value of the car to true.
  • Car.off()
    • Should change the running value to false.
  • Car.driveTo(destination)
    • Should console.log "driving to <destination>", but only if the car is running.
    • Should return true if it is successful and false if it is not.
  • Car.park()
    • Only if the car is not running, you should console.log parked!!.
    • Should return true if it is successful and false if it is not.

Phase VI

Add the following property as a parameter to the constructor:

  • passengers
    • Should be optional and default to an empty array if not specified.

Implement the following methods:

  • Car.pickUp(name)
    • Should take a name and console.log that you are "driving to pick up <name>", but only if the car is running AND there are enough seats available.
    • Should also update the passengers array to include the new passenger.
    • Should also return true on success and false on failure.
    • The newly picked up passenger should be pushed to the end of the array.
  • Car.dropOff(name)
    • Should take a name and remove them from the passengers array, but only if they are in the array.
    • Should also only drop them off if the car is on.
    • Should also output "driving to drop off <name>" and return true on success and false on failure.
  • Car.passengerCount()
    • Should return the number (integer) of passengers currently in the car.

NOTE: When deciding if there are enough seats available, remember that the driver takes up 1 seat, but is NOT counted as a passenger in passengerCount(). You can assume the driver is the owner.

Licensing

  1. All content is licensed under a CC-BY-NC-SA 4.0 license.
  2. All software code is licensed under GNU GPLv3. For commercial use or alternative licensing, please contact legal@ga.co.