Risk analysis for testing in Testing Fundamentals - Test Execution Trace

Test Overview

This test simulates a risk analysis process for a software feature. It verifies that high-risk areas are identified and prioritized for testing to reduce potential failures.

Test Code - PyTest

Testing Fundamentals

def risk_analysis(features):
    # Assign risk scores based on impact and likelihood
    risk_scores = {}
    for feature, data in features.items():
        impact = data.get('impact', 0)
        likelihood = data.get('likelihood', 0)
        risk_scores[feature] = impact * likelihood
    # Sort features by risk descending
    prioritized = sorted(risk_scores.items(), key=lambda x: x[1], reverse=True)
    return prioritized


def test_risk_analysis():
    features = {
        'login': {'impact': 9, 'likelihood': 8},
        'search': {'impact': 6, 'likelihood': 5},
        'profile_update': {'impact': 7, 'likelihood': 3},
        'notifications': {'impact': 4, 'likelihood': 2}
    }
    result = risk_analysis(features)
    expected_first = ('login', 72)  # 9*8
    assert result[0] == expected_first, f"Expected highest risk feature to be {expected_first}, got {result[0]}"
    assert result[-1][0] == 'notifications', "Expected lowest risk feature to be 'notifications'"

Execution Trace - 7 Steps

Step	Action	System State	Assertion	Result
1	Test starts	Test environment ready, risk_analysis function and test_risk_analysis defined	-	PASS
2	test_risk_analysis() is called	Features dictionary with impact and likelihood values passed to risk_analysis	-	PASS
3	risk_analysis calculates risk scores for each feature	Risk scores computed: login=72, search=30, profile_update=21, notifications=8	-	PASS
4	risk_analysis sorts features by risk descending	Sorted list: [('login', 72), ('search', 30), ('profile_update', 21), ('notifications', 8)]	-	PASS
5	test_risk_analysis asserts highest risk feature is 'login' with score 72	First item in result is ('login', 72)	assert result[0] == ('login', 72)	PASS
6	test_risk_analysis asserts lowest risk feature is 'notifications'	Last item in result is ('notifications', 8)	assert result[-1][0] == 'notifications'	PASS
7	Test ends successfully	All assertions passed, risk analysis prioritization verified	-	PASS

Failure Scenario

Failing Condition: If risk scores are calculated incorrectly or sorting fails

Execution Trace Quiz - 3 Questions

What does the test verify about the 'login' feature?

A It has the lowest risk score

B It is not included in the risk analysis

C It has the highest risk score

D It has the same risk score as 'search'

Key Result

Performing risk analysis helps testers focus on the most critical features first, improving test efficiency and reducing chances of major failures.