test/deprecated_test.rb in iostreams-1.5.1 vs test/deprecated_test.rb in iostreams-1.6.0

@@ -1,6 +1,8 @@
 require_relative "test_helper"
 
+IOStreams.include(IOStreams::Deprecated)
+
 # Test deprecated api
 class DeprecatedTest < Minitest::Test
   describe IOStreams do
     let :source_file_name do
       File.join(__dir__, "files", "text.txt")