Identifying performance bottlenecks in Testing Fundamentals - Test Execution Trace

Test Overview

This test checks if the application responds within an acceptable time limit when loading the homepage. It verifies that the page load time is under 2 seconds to identify any performance bottlenecks.

Test Code - unittest

Testing Fundamentals

import time
import unittest

class PerformanceTest(unittest.TestCase):
    def test_homepage_load_time(self):
        start_time = time.time()
        # Simulate loading homepage
        load_homepage()  # Assume this function loads the homepage
        end_time = time.time()
        load_duration = end_time - start_time
        self.assertLess(load_duration, 2.0, f"Homepage load took too long: {load_duration} seconds")

def load_homepage():
    # Simulated delay representing page load
    time.sleep(1.5)  # 1.5 seconds load time

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

Execution Trace - 6 Steps

Step	Action	System State	Assertion	Result
1	Test starts	Test runner initialized, ready to execute test_homepage_load_time	-	PASS
2	Records start time	Current time noted before homepage load	-	PASS
3	Calls load_homepage function to simulate page loading	Simulated homepage loading with 1.5 seconds delay	-	PASS
4	Records end time after homepage load	Current time noted after homepage load	-	PASS
5	Calculates load duration and asserts it is less than 2 seconds	Load duration calculated as approximately 1.5 seconds	Assert load_duration < 2.0 seconds	PASS
6	Test ends with PASS	Homepage load time is within acceptable limit	-	PASS

Failure Scenario

Failing Condition: Homepage load time exceeds 2 seconds

Execution Trace Quiz - 3 Questions

What does the test measure to identify performance bottlenecks?

A The color scheme of the homepage

B The time taken to load the homepage

C The number of clicks on the homepage

D The size of images on the homepage

Key Result

Measuring response times with assertions helps catch slow parts early, so you can fix performance bottlenecks before users notice.