add test code

ci/.gitlab-ci.yml

@@ -15,6 +15,7 @@ variables:
 
 stages:
 - build
+- test
 - push
 - artifacts
 - release
@@ -26,6 +27,16 @@ stages:
       when: never
     - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
 
+test_code:
+  stage: test
+  image: golang:latest
+  <<: *rules
+  script:
+    - cd app
+    - CGO_ENABLED=0 GOOS=linux GO111MODULE=auto go test
+  tags:
+   - docker
+
 build_main:
   stage: build
   image: golang:latest