Better specs for happy_discount
Better test for happy_discount
Remove unnecessary expect
Fix test based on previous update
Revert "Remove unnecessary expect"

This reverts commit fda0b0d5ab6f0b20b3008bcc682e9921fd7f07fe.
Final fix!
Fixed the following tests:
Bar initializes with a name (added instance var)
Bar cannot change its name (attr_reader vs attr_accessor)
Bar initializes with an empty menu (added @menu_items = [] to initialize method)
Bar can add menu items (added method that pushes Item to @menu_items)
Bar can retrieve its menu items (Added Item attr_accessors)
Bar has a default happy hour discount of 0 (Added happy_discount setter that defaults to 0)
Bar can set its happy hour discount (already solved with above fix)
Currently failing on the test 'Bar only returns a discount when it's happy hour'