spec/alexandria/book_spec.rb in alexandria-book-collection-manager-0.7.0 vs spec/alexandria/book_spec.rb in alexandria-book-collection-manager-0.7.1

@@ -29,6 +29,29 @@
     expect(same_book).to eq book
     different_book = an_artist_of_the_floating_world
     different_book.isbn = '9780571147999'
     expect(different_book).not_to eq book
   end
+
+  describe '#rating' do
+    let(:book) { an_artist_of_the_floating_world }
+    it 'returns 0 by default' do
+      expect(book.rating).to eq 0
+    end
+  end
+
+  describe '#rating=' do
+    let(:book) { an_artist_of_the_floating_world }
+    it 'assigns rating' do
+      book.rating = 5
+      expect(book.rating).to eq 5
+    end
+
+    it 'does not allow higher rating than 5 to be assigned' do
+      expect { book.rating = 6 }.to raise_error
+    end
+
+    it 'does not allow lower rating than 0 to be assigned' do
+      expect { book.rating = -1 }.to raise_error
+    end
+  end
 end