"RUBY"

Define a class called BookInStock which represents a book with an ISBN number (variable name => isbn), and price of the book as a floating-point number (variable name => price), as attributes.

Your first step is to create your getters and setters.

Your second step is to create a constructor should accept the ISBN number (a string, since in real life ISBN numbers can begin with zero and can include hyphens) as the first argument and price as second argument.

Run rspec in the terminal window to test. Once everything is passing, upload your screenshot to this question.

Note: You should see "5 examples, 0 failures".

code given:

# Ruby Basics Part 3

class BookInStock # YOUR CODE HERE attr_reader :isbn, :price end

spec file

require 'rubybasics3.rb'

RSpec.configure do |config| config.filter_run_excluding :disabled => true end

describe "BookInStock" do it "should be defined" do expect { BookInStock }.not_to raise_error end

describe 'getters and setters' do before(:each) { @book = BookInStock.new('isbn1', 33.8) } it 'should set ISBN [10 points]' , points: 10 do expect(@book.isbn).to eq('isbn1') end it 'should set price [10 points]' , points: 10 do expect(@book.price).to eq(33.8) end it 'should be able to change ISBN [10 points]' , points: 10 do @book.isbn = 'isbn2' expect(@book.isbn).to eq('isbn2') end it 'should be able to change price [10 points]' , points: 10 do @book.price = 300.0 expect(@book.price).to eq(300.0) end end describe 'constructor', :disabled => true do it 'should reject invalid ISBN number [10 points]' , points: 10 do expect { BookInStock.new('', 25.00) }.to raise_error(ArgumentError) end it 'should reject zero price [10 points]' , points: 10 do expect { BookInStock.new('isbn1', 0) }.to raise_error(ArgumentError) end it 'should reject negative price [10 points]' , points: 10 do expect { BookInStock.new('isbn1', -5.0) }.to raise_error(ArgumentError) end end describe "#price_as_string", :disabled => true do it "should be defined" do expect(BookInStock.new('isbn1', 10)).to respond_to(:price_as_string) end it 'should display 33.95 as "$33.95" [10 points]' , points: 10 do expect(BookInStock.new('isbn11', 33.95).price_as_string).to eq('$33.95') end it "should display 1.1 as $1.10 [10 points]" , points: 10 do expect(BookInStock.new('isbn11', 1.1).price_as_string).to eq('$1.10') end it "should display 20 as $20.00 [10 points]" , points: 10 do expect(BookInStock.new('isbn11', 20).price_as_string).to eq('$20.00') end end end