build: add test stage

.gitlab-ci.yml

@@ -2,6 +2,7 @@ image: "ruby:2.7"
 
 stages:
   - release
+  - test
 
 before_script:
   - sudo apt-get update -qq
@@ -10,6 +11,10 @@ before_script:
   - gem install bundler --no-document
   - bundle install --jobs $(nproc)  "${FLAGS[@]}"
 
+rspec:
+  script:
+    - bundle exec rspec
+
 rubocop:
   script:
     - bundle exec rubocop

.rubocop.yml

+inherit_gem:
+  rubocop-shopify: rubocop.yml
+
+Style/GlobalVars:
+  Enabled: false
+Style/FrozenStringLiteralComment:
+  Enabled: false
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