Dry up next_time_from. Move cron_parser_spec to appropriate location.

lib/gitlab/ci/cron_parser.rb

@@ -11,11 +11,7 @@ module Gitlab
 
       def next_time_from(time)
         cron_line = try_parse_cron(@cron, @cron_time_zone)
-        if cron_line.present?
-          cron_line.next_time(time).in_time_zone(Time.zone)
-        else
-          nil
-        end
+        cron_line.next_time(time).in_time_zone(Time.zone) if cron_line.present?
       end
 
       def validation

spec/lib/ci/cron_parser_spec.rb → spec/lib/gitlab/ci/cron_parser_spec.rb

 require 'spec_helper'
 
-module Ci
-  describe CronParser, lib: true do
+describe Gitlab::Ci::CronParser do
   shared_examples_for "returns time in the future" do
     it { is_expected.to be > Time.now }
   end
@@ -102,5 +101,4 @@ module Ci
       expect(is_valid_cron_time_zone).to eq(false)
     end
   end
-  end
 end