Add testing to gitlab CI

.gitlab-ci.yml

@@ -27,13 +27,13 @@ build:
     paths:
     - build/libs
 
-#test:
-#  stage: test
-#  script: gradle check
-#  cache:
-#    key: "$CI_COMMIT_REF_NAME"
-#    policy: pull
-#    paths:
-#      - build
-#      - .gradle
+test:
+  stage: test
+  script: gradle check
+  cache:
+    key: "$CI_COMMIT_REF_NAME"
+    policy: pull
+    paths:
+      - build
+      - .gradle