Return false for test envs on Gitlab.dev_or_com? call

The behavior was moved to ApplicationSetting#should_check_namespace_plan? in order to it keep being tested on test environments without needing a explicit stub

ee/app/models/ee/application_setting.rb

@@ -107,7 +107,7 @@ module EE
     end
 
     def should_check_namespace_plan?
-      check_namespace_plan? && ::Gitlab.dev_env_or_com?
+      check_namespace_plan? && (Rails.env.test? || ::Gitlab.dev_env_or_com?)
     end
 
     def elasticsearch_indexing

ee/spec/models/application_setting_spec.rb

@@ -85,6 +85,14 @@ describe ApplicationSetting do
     before do
       stub_application_setting(check_namespace_plan: check_namespace_plan_column)
       allow(::Gitlab).to receive(:dev_env_or_com?) { gl_com }
+
+      # This stub was added in order to force a fallback to Gitlab.dev_env_or_com?
+      # call testing.
+      # Gitlab.dev_env_or_com? responds to `false` on test envs
+      # and we want to make sure we're still testing
+      # should_check_namespace_plan? method through the test-suite (see
+      # https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/18461#note_69322821).
+      allow(Rails).to receive_message_chain(:env, :test?).and_return(false)
     end
 
     subject { setting.should_check_namespace_plan? }

lib/gitlab.rb

@@ -35,6 +35,6 @@ module Gitlab
   end
 
   def self.dev_env_or_com?
-    Rails.env.test? || Rails.env.development? || org? || com?
+    Rails.env.development? || org? || com?
   end
 end