Merge branches 'AddUnitTests' and 'AddUnitTests' of https://github.co…

…m/GeekyHacks/OOPSchoolLibrary into AddUnitTests

spec/rental_spec.rb

@@ -1,20 +1,17 @@
 require './rental'
+require './book'
+require './person'
 
 describe Rental do
-  let(:book) { double('Book', rentals: []) }
-  let(:person) { double('Person', rentals: []) }
+  let(:book) { Book.new('Book Title', 'Author') }
+  let(:person) { Person.new(25, 'John Doe') }
 
   subject(:rental) { described_class.new('2023-10-26', book, person) }
 
   it { is_expected.to have_attributes(date: '2023-10-26', book: book, person: person) }
 
   it 'associates the rental with the book and person' do
-    expect(book.rentals).to be_empty
-    expect(person.rentals).to be_empty
-
-    rental
-
-    expect(book.rentals).to contain_exactly(rental)
-    expect(person.rentals).to contain_exactly(rental)
+    expect(book.rentals).to include(rental)
+    expect(person.rentals).to include(rental)
   end
 end