Traceability matrix in Testing Fundamentals - Test Execution Trace

Test Overview

This test verifies that all requirements have corresponding test cases by checking the traceability matrix completeness.

Test Code - unittest

Testing Fundamentals

import unittest

class TraceabilityMatrixTest(unittest.TestCase):
    def setUp(self):
        # Sample requirements and test cases mapping
        self.requirements = ['REQ-1', 'REQ-2', 'REQ-3']
        self.test_cases = {
            'REQ-1': ['TC-1', 'TC-2'],
            'REQ-2': ['TC-3'],
            'REQ-3': ['TC-4']
        }

    def test_all_requirements_have_tests(self):
        for req in self.requirements:
            with self.subTest(requirement=req):
                self.assertIn(req, self.test_cases, f"Requirement {req} missing in test cases")
                self.assertTrue(len(self.test_cases[req]) > 0, f"No test cases linked to {req}")

if __name__ == '__main__':
    unittest.main()

Execution Trace - 6 Steps

Step	Action	System State	Assertion	Result
1	Test starts	Test runner initialized with TraceabilityMatrixTest	-	PASS
2	setUp method runs to prepare requirements and test cases data	Requirements list and test cases dictionary loaded	-	PASS
3	Test method test_all_requirements_have_tests begins checking REQ-1	Checking if REQ-1 is in test_cases and has linked test cases	assertIn('REQ-1', test_cases) and len(test_cases['REQ-1']) > 0	PASS
4	Test method checks REQ-2	Checking if REQ-2 is in test_cases and has linked test cases	assertIn('REQ-2', test_cases) and len(test_cases['REQ-2']) > 0	PASS
5	Test method checks REQ-3	Checking if REQ-3 is in test_cases and has linked test cases	assertIn('REQ-3', test_cases) and len(test_cases['REQ-3']) > 0	PASS
6	All requirements verified with linked test cases	Test completes successfully	-	PASS

Failure Scenario

Failing Condition: A requirement is missing from the test cases dictionary or has no linked test cases

Execution Trace Quiz - 3 Questions

What does the test verify about each requirement?

A Requirements are sorted alphabetically

B Each test case has multiple requirements

C Each requirement has at least one linked test case

D Test cases are executed in order

Key Result

Using a traceability matrix test ensures every requirement is covered by at least one test case, preventing gaps in testing coverage.