Update .gitlab-ci.yml file

.gitlab-ci.yml

 stages:
   - lint
-  # -test
+  - test
   # -build
   # - deploy
 
@@ -25,4 +25,18 @@ lint:
     - echo "Linting Python code.."
     - flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
     - flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-    - echo "Done running the Python Lint stage"
+    - echo "Done running the Python Lint stage"
\ No newline at end of file
+
+test:
+  stage: test
+  image: python:3.10
+  before_script:
+    - pip install --upgrade pip
+    - pip install pytest
+    - echo "Running Tests"
+    - echo "PYTHONPATH:" ${PYTHONPATH}
+    - echo "PWD=$(pwd)"
+  script:
+    - echo "Running PyTests"
+  after_script:
+    - echo "Tests completed succesfully"