Denver Public Library (DPL)

Preparation

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Iteration 1

Use TDD to create a Book class that responds to the following interaction pattern. For the publication_year method, assume that the year is always the last four characters of the publication date.

pry(main)> require './lib/book'
#=> true

pry(main)> book = Book.new({author_first_name: "Harper", author_last_name: "Lee", title: "To Kill a Mockingbird", publication_date: "July 11, 1960"})
#=> #<Book:0x00007fcc021fad08...>

pry(main)> book.title
#=> "To Kill a Mockingbird"

pry(main)> book.author
#=> "Harper Lee"

pry(main)> book.publication_year
#=> "1960"

Iteration 2

Use TDD to create an Author class that responds to the following interaction pattern.

The write method must take two Strings as arguments and return an instance of Book.

pry(main)> require './lib/book'
#=> true

pry(main)> require './lib/author'
#=> true

pry(main)> charlotte_bronte = Author.new({first_name: "Charlotte", last_name: "Bronte"})
#=> #<Author:0x00007fb898081850...>

pry(main)> charlotte_bronte.name
#=> "Charlotte Bronte"

pry(main)> charlotte_bronte.books
#=> []

pry(main)> jane_eyre = charlotte_bronte.write("Jane Eyre", "October 16, 1847")
#=> #<Book:0x00007fb896e22538...>

pry(main)> jane_eyre.class
#=> Book

pry(main)> jane_eyre.title
#=> "Jane Eyre"

pry(main)> villette = charlotte_bronte.write("Villette", "1853")
#=> #<Book:0x00007fb8980aaca0...>

pry(main)> charlotte_bronte.books
#=> [#<Book:0x00007fb896e22538...>, #<Book:0x00007fb8980aaca0...>]

Iteration 3

Use TDD to implement the following features:

Create a Library class. Each library has a name as well as a way to read that data.
Each library has a list of books and authors as well as a way to read that data
Each library can add_author which will store the author to the library's list of authors as well as storing any books that author has written to the library's list of books
Each library can tell us the publication_time_frame_for an author which takes an Author object as an argument and returns a hash with two key/value pairs:

:start which points to the publication year of the Author's first book.
:end which points to the publication year of the Author's last book.

Method Name	Return Value (type)
`name`	`String`
`books`	`Array` of `Book` objects
`authors`	`Array` of `Author` objects
`add_author(author)`	`authors` (`Array` of `Author` objects)
`publication_time_frame_for(author)`	`Hash` with two key/value pairs: `:start` which points to the publication year of the `Author`'s first book and `:end` which points to the publication year of the `Author`'s last book.

Iteration 4

Use TDD to implement the following features on the Library class:

Checking out a book and the ability to return a list of all books currently checked out
Returning a book. Calling this method means that a book is no longer checked out.
Finding the book that has been checked out the most times from this library

exasperlnc / denver_public_library_2301