test: add missing tmpdir

kenhys · kenhys · commit c78301a48dd7 · 2021-03-09T16:14:50.000+09:00
Signed-off-by: Kentaro Hayashi &lt;kenhys@gmail.com&gt;
diff --git a/test/plugin/test_in_tail.rb b/test/plugin/test_in_tail.rb
@@ -6,6 +6,7 @@
 require 'net/http'
 require 'flexmock/test_unit'
 require 'timecop'
+require 'tmpdir'
 require 'securerandom'
 
 class TailInputTest < Test::Unit::TestCase
