test: follow fixed time

Fluent::EventTime#to_i returns seconds, not nano-seconds.

GitHub: #1

Signed-off-by: Kentaro Hayashi <[email protected]>

Author: kenhys

test/plugin/test_time_collector.rb

@@ -9,7 +9,7 @@ def test_time_now
       stub(Fluent::EventTime).now { Fluent::EventTime.new(1e9) }
       collector.run
       time_seconds = collector.cmetrics[:time_seconds]
-      assert_equal(1.0, time_seconds.val)
+      assert_equal(1_000_000_000, time_seconds.val)
     end
   end
 end