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aldesantis/review_spec.rb

Created June 2, 2016 13:19
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review_spec.rb
RSpec.describe Review do
let(:book) { Book.create! }
subject { Review.new(book: book) }
it "increments the book's reviews_count when saving" do
expect {
subject.save!
}.to change(book, :reviews_count).by(1)
end
it "decrements the book's reviews_count when destroying" do
subject.save!
expect {
subject.destroy!
}.to change(book, :reviews_count).by(-1)
end
it "moves the entry when changing book" do
book2 = Book.create!
subject.save!
expect {
subject.update! book: book2
}.to change(book, :reviews_count).by(-1) && change(book2, :reviews_count).by(1)
end
end
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