Testing stage in pipeline

.gitlab-ci.yml

@@ -6,8 +6,14 @@ before_script:
 
 stages:
   - build
+  - test
 
 backend_build:
   stage: build
   script:
     - npm build
+
+backend_test:
+  stage: test
+  script:
+    - npm test

__tests__/example.test.js

@@ -7,3 +7,7 @@ describe("number adding", () => {
     })
   })
 })
+
+describe("server", () => {
+  it("should work", () => {})
+})

package.json

@@ -6,7 +6,9 @@
   "scripts": {
     "build": "webpack src/app.js -o public/js/app.js",
     "start": "http-server -c-1 -p 12345 public",
-    "test": "jest"
+    "test": "jest",
+    "test-changed": "jest --only-changed",
+    "test-coverage": "jest --coverage"
   },
   "dependencies": {
     "http-server": "^0.11.1",