pack.rb in ffi-tk-2018.02.20

- old
+ new

@@ -1,5 +1,6 @@
+# frozen_string_literal: true
 require_relative '../../helper'
 
 Tk.init
 
 describe Tk::Pack do
@@ -13,8 +14,8 @@
     }
   end
 
   it 'forgets the packing' do
     Tk::Pack.forget(@button)
-    lambda{ Tk::Pack.info(@button) }.should.raise
+    -> { Tk::Pack.info(@button) }.should.raise
   end
-end
\ No newline at end of file
+end