- require ruby 1.9.2 (for grok)

- use 'it' instead of 'context'

spec/test_utils.rb

@@ -2,6 +2,14 @@ require "insist"
 require "logstash/agent"
 require "logstash/event"
 
+if RUBY_VERSION < "1.9.2"
+  $stderr.puts "Ruby 1.9.2 or later is required. (You are running: " + RUBY_VERSION + ")"
+  $stderr.puts "Options for fixing this: "
+  $stderr.puts "  * If doing 'ruby bin/logstash ...' add --1.9 flag to 'ruby'"
+  $stderr.puts "  * If doing 'java -jar ... ' add -Djruby.compat.version=RUBY1_9 to java flags"
+  raise LoadError
+end
+
 module LogStash
   module RSpec
     if ENV["DEBUG"] 
@@ -34,7 +42,7 @@ module LogStash
             filter.filter(subject)
           end
         end
-        context("after processing", &block)
+        it("when processed", &block)
       end
     end # def sample
   end # module RSpec