Revert "Merge branch 'dev' into 'main'"

This reverts merge request !1

.gitlab-ci.yml

-variables:
-  example: this is an example variable
-
-stages:
-  - stage1
-  - stage2
-
-build:
-  stage: stage1
-  script:
-    - echo "We are currently in stage 1"
-    - echo "These are the contents of test.py"
-    - cat test.py
-    - echo $example
-
-test:
-  stage: stage2
-  script:
-    - echo "We are currently in stage 2"
-    - echo "running python script"
-    - python3 test.py
\ No newline at end of file

sum.py

-def sum(a,b):
-    return a+b
\ No newline at end of file

test.py

-import unittest
-from sum import sum
-class TestCalculations (unittest.TestCase):
-    def test_sum(self):
-        self.assertEqual(sum(8,2), 10,'sum is wrong')
-        self.assertEqual(sum(4,3), 7,'sum is wrong')
-        self.assertEqual(sum(-2,1), -1,'sum is wrong')
-        self.assertEqual(sum(4,5), 9,'sum is wrong')
-        self.assertEqual(sum(0,0), 0,'sum is wrong')
-        print("all test cases passed")
-if __name__ =='__main__':
-    unittest.main()
\ No newline at end of file