diff --git a/test/test_tar_file_creator.rb b/test/test_tar_file_creator.rb
index 2c83605..e77b16e 100644
--- a/test/test_tar_file_creator.rb
+++ b/test/test_tar_file_creator.rb
@@ -6,13 +6,6 @@
 class TarFileCreatorTest < Minitest::Test
   include TarFileCreator
 
-  def add_data_file
-    File.write(
-      File.join(@data_dir_path, "something.txt"),
-      "Something to be preserved"
-    )
-  end
-
   def setup
     @test_dir_path = File.join(__dir__, "tar_test")
     @data_dir_path = File.join(@test_dir_path, "test")