spec/lib/abstractivator/cons_spec.rb in abstractivator-0.8.0 vs spec/lib/abstractivator/cons_spec.rb in abstractivator-0.10.0

@@ -43,6 +43,13 @@
       expect(list_to_enum(empty_list).to_a).to eql []
       expect(list_to_enum(cons(1, cons(2, cons(3, empty_list)))).to_a).to eql [1, 2, 3]
     end
   end
 
-end
\ No newline at end of file
+  describe '#empty?' do
+    it 'determines whether or not the list is empty' do
+      expect(enum_to_list([1]).empty?).to be false
+      expect(empty_list.empty?).to be true
+    end
+  end
+
+end