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require 'ruby_intro.rb'
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' 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" 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