Hooked up frontend to backend for OnBuy and OnSell

[sophiajmoore]

Overview

When you create and join a commons, clicking on the “Buy cow” and “Sell cow” makes your total wealth increase/decrease according to the cow price, and makes the number of cows increase/decrease by 1. We edited PlayPage.js to hookup the buy and sell endpoints, and edited Play Page Tests as well.

Note that you are automatically given 1 cow to start (the CommonsController.java file has been changed to implement this). We decided to include this feature so that the user has actions to do when they spawn in!

Issues Addressed

Addresses issues #14 and #15.

Details

IMG_8394.MOV

Testing Plan

1. Create a commons with starting balance 50 and price of cow 10.
2. Join the commons.
3. The Number of Cows under Your Farm Stats should be 1, Market Cow price 10, and Total Wealth is 50.
4. When "Buy Cow" is clicked under Manage Cows, Total Wealth decreases by 10, and Number of Cows increases by 1 . Clicking it past 0 does not make Total Wealth Negative.
5. When "Sell Cow" is clicked under Manage Cows, Total Wealth increases by 10, and Number of Cows decreases by 1. Clicking it when you have 0 cows does not add to Total Wealth.

[codecov]

Codecov Report

Merging #65 (2f96ad3) into main (bac325e) will increase coverage by 0.33%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main      #65      +/-   ##
============================================
+ Coverage     82.18%   82.52%   +0.33%     
  Complexity       82       82              
============================================
  Files            52       52              
  Lines           466      475       +9     
  Branches         14       14              
============================================
+ Hits            383      392       +9     
  Misses           83       83              

Impacted Files	Coverage Δ
frontend/src/main/pages/PlayPage.js	100.00% <100.00%> (ø)
...156/happiercows/controllers/CommonsController.java	100.00% <100.00%> (ø)

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[johnsonlin2001]

LGTM - Buy and Sell functionalities working as expected.