asimonia / ex_orchard

Pear and Oak Tree Orchard Simulator

Setup

These commands are a helpful quick start. You may choose to ignore them completely and create your own directory structure. If you choose to use this recommendation, just copy the commands below and paste. It doesn't matter what directory you are currently in.

mkdir -p ~/workspace/exercises/mjd/orchard && cd $_

Instructions

Use Jasmine to write your unit tests before you begin writing any implementation code.

Unit Tests

1. There should be a Plant function defined.
2. There should be a Tree function defined.
3. There should be a function named increaseHeight on the prototype of Plant.
4. There should be a function named decreaseHeight on the prototype of Plant.
5. There should be a height property on Plant.
6. There should be a function named grow on the prototype of Tree.
7. There should be a function named trim on the prototype of Tree.
8. When you invoke the trim method on Tree, the height of the Tree should be reduced by the integer value that is passed as an argument (e.g. PearTree.trim(2))
9. When you invoke the trim method on Tree, the values of the branches property should be decreased by one.
10. When you invoke the grow method on Tree, the height of the Tree should be increased by the integer value that is passed as an argument (e.g. PearTree.grow(2))

Requirements & Behavior

Reference: Checkout the setInterval and clearInterval functions in JavaScript

1. Create a Plant function.

2. Create a Tree function.

3. Plant should be the prototype of Tree.

4. Plant should have a property of height.

5. The Plant prototype should have two methods on it: increaseHeight and decreaseHeight. Each method should accept an integer value as input.

   Plant.prototype.increaseHeight = function (growth) {
   
   }

6. increaseHeight should increase the value of the height property by the amount passed in as an argument.

7. decreaseHeight should decrease the value of the height property by the amount passed in as an argument.

8. Tree should have a property of branches.

9. The Tree prototype should have two methods on it: grow and trim.

10. The grow method should accept an integer value as input.

    Tree.prototype.grow = function (amount) {
    
    }

11. The grow method should increase the height of the tree.

12. The trim method should accept an integer value as input.

13. The trim method should decrease the height of the tree.

14. When the trim method is called, the number of branches should decrease by one.

15. Each time the height of a tree increases by 10, the value of branch should increase by one.

16. Create a PearTree instance of Tree. var PearTree = new Tree();

17. Create an OakTree instance of Tree.

18. Every second, increase the height the pear tree by some integer value and increase the height the oak tree by some integer value that is larger than what you used for the pear tree.

19. Also output the current height of each tree and how many branches it has to the DOM.

    Pear tree is now 23cm tall and has 2 branches

    Oak tree is now 57cm tall and has 4 branches

20. Every tenth time the trees are grown, invoke the trim method. Pass one value to the method for the pear tree, and a larger value to the method on the oak tree.

21. Stop growing the trees after they have grown 30 times.