##Tests

Running the Specs.

Part 1: Define a Class

Define class and attribute for Room, Apartment and Building

Part 2: Work with a Collection

Release 1:

Pretend we have Apartment with monthly rent and number of rooms. We need to find:

1. Apartment#total_sqft - total sqft of current apartment.
2. Apartment#price_per_sqft - price per sqft of current apartment.
3. Apartment#room_count - total number of rooms in apartment.
4. Apartment#bedroom_count - number of bedroom in apartment

Release 2:

Now we have Building with many Apartments. We need to find:

1. Building#total_room_count - total count rooms in building.
2. Building#total_monthly_revenue - total monthly revenue for current building.
3. Building#apartments_by_rent - sort apartments by rent.
4. Building#find_apartments_by_bedroom_count - find an apartment with a given amount of bedrooms.
5. Building#total_sqft - total sqft of all apartments in the current building.