Improve enqueued_job at specs from #2350

Author: JonRowe

spec/rspec/rails/matchers/active_job_spec.rb

@@ -225,10 +225,10 @@ def self.name; "LoggingJob"; end
       }.to have_enqueued_job.at(time)
     end
 
-    skip_freeze_time = method_defined?(:freeze_time) ? false : "#freeze_time is undefined"
-    it "works with time offsets", skip: skip_freeze_time do
-      freeze_time do
-        time = Time.current
+    it "works with time offsets" do
+      # note that Time.current does not replicate Rails behavior for 5 seconds from now.
+      time = Time.current.change(usec: 0)
+      travel_to time do
         expect { hello_job.set(wait: 5).perform_later }.to have_enqueued_job.at(time + 5)
       end
     end